Mock up of the software. Fully generated with Gemini 3.8 as a proof of concept.

vendor/imgui/.editorconfig

@@ -0,0 +1,28 @@
+# See http://editorconfig.org to read about the EditorConfig format.
+# - In theory automatically supported by VS2017+ and most common IDE or text editors.
+# - In practice VS2019-VS2022 stills don't trim trailing whitespaces correctly :(
+#   - Suggest installing this to trim whitespaces:
+#      GitHub https://github.com/madskristensen/TrailingWhitespace
+#      VS2019 https://marketplace.visualstudio.com/items?itemName=MadsKristensen.TrailingWhitespaceVisualizer
+#      VS2022 https://marketplace.visualstudio.com/items?itemName=MadsKristensen.TrailingWhitespace64
+#     (in spite of its name doesn't only visualize but also trims)
+#   - Alternative for older VS2010 to VS2015: https://marketplace.visualstudio.com/items?itemName=EditorConfigTeam.EditorConfig
+
+# top-most EditorConfig file
+root = true
+
+# Default settings:
+# Use 4 spaces as indentation
+[*]
+indent_style = space
+indent_size = 4
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[imstb_*]
+indent_size = 3
+trim_trailing_whitespace = false
+
+[Makefile]
+indent_style = tab
+indent_size = 4

vendor/imgui/.gitattributes

@@ -0,0 +1,30 @@
+* text=auto
+
+*.c text
+*.cpp text
+*.h text
+*.m text
+*.mm text
+*.md text
+*.txt text
+*.html text
+*.bat text
+*.frag text
+*.vert text
+*.mkb text
+*.icf text
+
+*.sln text eol=crlf
+*.vcxproj text eol=crlf
+*.vcxproj.filters text eol=crlf
+*.natvis text eol=crlf
+
+Makefile text eol=lf
+*.sh text eol=lf
+*.pbxproj text eol=lf
+*.storyboard text eol=lf
+*.plist text eol=lf
+
+*.png binary
+*.ttf binary
+*.lib binary

vendor/imgui/.gitignore

@@ -0,0 +1,87 @@
+## Misc artifacts
+.DS_Store
+.claude
+.vscode
+
+## Dear ImGui artifacts
+imgui.ini
+imgui*.ini
+
+## General build artifacts
+*.o
+*.so*
+*.a
+*.obj
+*.exe
+examples/*/Debug/*
+examples/*/Release/*
+examples/*/x64/*
+examples/*.tmp
+
+## Visual Studio artifacts
+.vs
+ipch
+*.opensdf
+*.log
+*.pdb
+*.ilk
+*.user
+*.sdf
+*.suo
+*.VC.db
+*.VC.VC.opendb
+
+## Getting files created in JSON/Schemas/Catalog/ from a VS2022 update
+JSON/
+
+## Commonly used CMake directories & CMake CPM cache
+build*/
+.cache
+
+## Xcode & macOS artifacts
+project.xcworkspace
+xcuserdata
+examples/*/*.dSYM
+
+## Emscripten artifacts
+examples/*.o.tmp
+examples/*.out.js
+examples/*.out.wasm
+examples/example_glfw_opengl3/web/*
+examples/example_glfw_wgpu/web/*
+examples/example_glfw_wgpu/external/*
+examples/example_sdl2_opengl3/web/*
+examples/example_sdl2_wgpu/web/*
+examples/example_sdl3_opengl3/web/*
+examples/example_sdl3_wgpu/web/*
+
+## JetBrains IDE artifacts
+.idea
+cmake-build-*
+
+## QNX artifacts
+*.pinfo
+*.dep
+*.gcno
+
+## Unix executables from our example Makefiles
+examples/example_apple_metal/example_apple_metal
+examples/example_apple_opengl2/example_apple_opengl2
+examples/example_apple_opengl3/example_apple_opengl3
+examples/example_glfw_metal/example_glfw_metal
+examples/example_glfw_opengl2/example_glfw_opengl2
+examples/example_glfw_opengl3/example_glfw_opengl3
+examples/example_glfw_vulkan/example_glfw_vulkan
+examples/example_glut_opengl2/example_glut_opengl2
+examples/example_null/example_null
+examples/example_sdl2_metal/example_sdl2_metal
+examples/example_sdl2_opengl2/example_sdl2_opengl2
+examples/example_sdl2_opengl3/example_sdl2_opengl3
+examples/example_sdl2_sdlrenderer2/example_sdl2_sdlrenderer2
+examples/example_sdl2_vulkan/example_sdl2_vulkan
+examples/example_sdl3_metal/example_sdl3_metal
+examples/example_sdl3_metal4/example_sdl3_metal4
+examples/example_sdl3_opengl3/example_sdl3_opengl3
+examples/example_sdl3_sdlgpu3/example_sdl3_sdlgpu3
+examples/example_sdl3_sdlrenderer3/example_sdl3_sdlrenderer3
+examples/example_sdl3_vulkan/example_sdl3_vulkan

vendor/imgui/LICENSE.txt

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014-2026 Omar Cornut
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/imgui/imconfig.h

@@ -0,0 +1,153 @@
+//-----------------------------------------------------------------------------
+// DEAR IMGUI COMPILE-TIME OPTIONS
+// Runtime options (clipboard callbacks, enabling various features, etc.) can generally be set via the ImGuiIO structure.
+// You can use ImGui::SetAllocatorFunctions() before calling ImGui::CreateContext() to rewire memory allocation functions.
+//-----------------------------------------------------------------------------
+// A) You may edit imconfig.h (and not overwrite it when updating Dear ImGui, or maintain a patch/rebased branch with your modifications to it)
+// B) or '#define IMGUI_USER_CONFIG "my_imgui_config.h"' in your project and then add directives in your own file without touching this template.
+//-----------------------------------------------------------------------------
+// You need to make sure that configuration settings are defined consistently _everywhere_ Dear ImGui is used, which include the imgui*.cpp
+// files but also _any_ of your code that uses Dear ImGui. This is because some compile-time options have an affect on data structures.
+// Defining those options in imconfig.h will ensure every compilation unit gets to see the same data structure layouts.
+// Call IMGUI_CHECKVERSION() from your .cpp file to verify that the data structures your files are using are matching the ones imgui.cpp is using.
+//-----------------------------------------------------------------------------
+
+#pragma once
+
+//---- Define assertion handler. Defaults to calling assert().
+// - If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so it can be used as a single statement.
+// - Compiling with NDEBUG will usually strip out assert() to nothing, which is NOT recommended because we use asserts to notify of programmer mistakes.
+//#define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
+//#define IM_ASSERT(_EXPR)  ((void)(_EXPR))     // Disable asserts
+
+//---- Define attributes of all API symbols declarations, e.g. for DLL under Windows
+// Using Dear ImGui via a shared library is not recommended, because of function call overhead and because we don't guarantee backward nor forward ABI compatibility.
+// - Windows DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() + SetAllocatorFunctions()
+//   for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for more details.
+//#define IMGUI_API __declspec(dllexport)                   // MSVC Windows: DLL export
+//#define IMGUI_API __declspec(dllimport)                   // MSVC Windows: DLL import
+//#define IMGUI_API __attribute__((visibility("default")))  // GCC/Clang: override visibility when set is hidden
+
+//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to clean your code of obsolete function/names.
+//#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+
+//---- Disable all of Dear ImGui or don't implement standard windows/tools.
+// It is very strongly recommended to NOT disable the demo windows and debug tool during development. They are extremely useful in day to day work. Please read comments in imgui_demo.cpp.
+//#define IMGUI_DISABLE                                     // Disable everything: all headers and source files will be empty.
+//#define IMGUI_DISABLE_DEMO_WINDOWS                        // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty.
+//#define IMGUI_DISABLE_DEBUG_TOOLS                         // Disable metrics/debugger and other debug tools: ShowMetricsWindow(), ShowDebugLogWindow() and ShowIDStackToolWindow() will be empty.
+
+//---- Don't implement some functions to reduce linkage requirements.
+//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS   // [Win32] Don't implement default clipboard handler. Won't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc. (user32.lib/.a, kernel32.lib/.a)
+//#define IMGUI_ENABLE_WIN32_DEFAULT_IME_FUNCTIONS          // [Win32] [Default with Visual Studio] Implement default IME handler (require imm32.lib/.a, auto-link for Visual Studio, -limm32 on command-line for MinGW)
+//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // [Win32] [Default with non-Visual Studio compilers] Don't implement default IME handler (won't require imm32.lib/.a)
+//#define IMGUI_DISABLE_WIN32_FUNCTIONS                     // [Win32] Won't use and link with any Win32 function (clipboard, IME).
+//#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS      // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices', this is why this is not the default).
+//#define IMGUI_DISABLE_TIME_FUNCTIONS                      // Don't setup default platform_io.Platform_SessionDate value using time(), localtime_r().
+//#define IMGUI_DISABLE_DEFAULT_SHELL_FUNCTIONS             // Don't implement default platform_io.Platform_OpenInShellFn() handler (Win32: ShellExecute(), require shell32.lib/.a, Mac/Linux: use system("")).
+//#define IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS            // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself (e.g. if you don't want to link with vsnprintf)
+//#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS              // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
+//#define IMGUI_DISABLE_FILE_FUNCTIONS                      // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle at all (replace them with dummies)
+//#define IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS              // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle so you can implement them yourself if you don't want to link with fopen/fclose/fread/fwrite. This will also disable the LogToTTY() function.
+//#define IMGUI_DISABLE_DEFAULT_ALLOCATORS                  // Don't implement default allocators calling malloc()/free() to avoid linking with them. You will need to call ImGui::SetAllocatorFunctions().
+//#define IMGUI_DISABLE_DEFAULT_FONT                        // Disable default embedded fonts (ProggyClean + ProggyForever). Remove ~9 KB + ~14 KB from output binary. AddFontDefaultXXX() functions will assert.
+//#define IMGUI_DISABLE_DEFAULT_FONT_BITMAP                 // Disable default embedded bitmap font (ProggyClean). Remove ~9 KB from output binary. AddFontDefaultBitmap() will assert.
+//#define IMGUI_DISABLE_DEFAULT_FONT_VECTOR                 // Disable default embedded vector font (ProggyForever), Remove ~14 KB from output binary. AddFontDefaultVector() will assert.
+//#define IMGUI_DISABLE_SSE                                 // Disable use of SSE intrinsics even if available
+
+//---- Enable Test Engine / Automation features.
+//#define IMGUI_ENABLE_TEST_ENGINE                          // Enable imgui_test_engine hooks. Generally set automatically by include "imgui_te_imconfig.h", see Test Engine for details.
+
+//---- Include imgui_user.h at the end of imgui.h as a convenience
+// May be convenient for some users to only explicitly include vanilla imgui.h and have extra stuff included.
+//#define IMGUI_INCLUDE_IMGUI_USER_H
+//#define IMGUI_USER_H_FILENAME         "my_folder/my_imgui_user.h"
+
+//---- Pack vertex colors as BGRA8 instead of RGBA8 (to avoid converting from one to another). Need dedicated backend support.
+//#define IMGUI_USE_BGRA_PACKED_COLOR
+
+//---- Use legacy CRC32-adler tables (used before 1.91.6), in order to preserve old .ini data that you cannot afford to invalidate.
+//#define IMGUI_USE_LEGACY_CRC32_ADLER
+
+//---- Use 32-bit for ImWchar (default is 16-bit) to support Unicode planes 1-16. (e.g. point beyond 0xFFFF like emoticons, dingbats, symbols, shapes, ancient languages, etc...)
+//#define IMGUI_USE_WCHAR32
+
+//---- Avoid multiple STB libraries implementations, or redefine path/filenames to prioritize another version
+// By default the embedded implementations are declared static and not available outside of Dear ImGui sources files.
+//#define IMGUI_STB_TRUETYPE_FILENAME   "my_folder/stb_truetype.h"
+//#define IMGUI_STB_RECT_PACK_FILENAME  "my_folder/stb_rect_pack.h"
+//#define IMGUI_STB_SPRINTF_FILENAME    "my_folder/stb_sprintf.h"    // only used if IMGUI_USE_STB_SPRINTF is defined.
+//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
+//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
+//#define IMGUI_DISABLE_STB_SPRINTF_IMPLEMENTATION                   // only disabled if IMGUI_USE_STB_SPRINTF is defined.
+
+//---- Use stb_sprintf.h for a faster implementation of vsnprintf instead of the one from libc (unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined)
+// Compatibility checks of arguments and formats done by clang and GCC will be disabled in order to support the extra formats provided by stb_sprintf.h.
+//#define IMGUI_USE_STB_SPRINTF
+
+//---- Use FreeType to build and rasterize the font atlas (instead of stb_truetype which is embedded by default in Dear ImGui)
+// Requires FreeType headers to be available in the include path. Requires program to be compiled with 'misc/freetype/imgui_freetype.cpp' (in this repository) + the FreeType library (not provided).
+// Note that imgui_freetype.cpp may be used _without_ this define, if you manually call ImFontAtlas::SetFontLoader(). The define is simply a convenience.
+// On Windows you may use vcpkg with 'vcpkg install freetype --triplet=x64-windows' + 'vcpkg integrate install'.
+//#define IMGUI_ENABLE_FREETYPE
+
+//---- Use FreeType + plutosvg or lunasvg to render OpenType SVG fonts (SVGinOT)
+// Only works in combination with IMGUI_ENABLE_FREETYPE.
+// - plutosvg is currently easier to install, as e.g. it is part of vcpkg. It will support more fonts and may load them faster. See misc/freetype/README for instructions.
+// - Both require headers to be available in the include path + program to be linked with the library code (not provided).
+// - (note: lunasvg implementation is based on Freetype's rsvg-port.c which is licensed under CeCILL-C Free Software License Agreement)
+//#define IMGUI_ENABLE_FREETYPE_PLUTOSVG
+//#define IMGUI_ENABLE_FREETYPE_LUNASVG
+
+//---- Use stb_truetype to build and rasterize the font atlas (default)
+// The only purpose of this define is if you want force compilation of the stb_truetype backend ALONG with the FreeType backend.
+//#define IMGUI_ENABLE_STB_TRUETYPE
+
+//---- Define constructor and implicit cast operators to convert back<>forth between your math types and ImVec2/ImVec4.
+// This will be inlined as part of ImVec2 and ImVec4 class declarations.
+/*
+#define IM_VEC2_CLASS_EXTRA                                                     \
+        IM_NODEBUGSTEP constexpr inline ImVec2(const MyVec2& f) : x(f.x), y(f.y) {}    \
+        IM_NODEBUGSTEP inline operator MyVec2() const { return MyVec2(x,y); }
+
+#define IM_VEC4_CLASS_EXTRA                                                                     \
+        IM_NODEBUGSTEP constexpr inline ImVec4(const MyVec4& f) : x(f.x), y(f.y), z(f.z), w(f.w) {}    \
+        IM_NODEBUGSTEP inline operator MyVec4() const { return MyVec4(x,y,z,w); }
+*/
+//---- ...Or use Dear ImGui's own basic math operators in every file including imgui.h:
+//#ifndef IMGUI_DEFINE_MATH_OPERATORS
+//#define IMGUI_DEFINE_MATH_OPERATORS
+//#endif
+//---- ...Or manually '#define IMGUI_DEFINE_MATH_OPERATORS' before '#include "imgui.h"' to use from one file.
+
+//---- Use 32-bit vertex indices (default is 16-bit) is one way to allow large meshes with more than 64K vertices.
+// Your renderer backend will need to support it (most example renderer backends support both 16/32-bit indices).
+// Another way to allow large meshes while keeping 16-bit indices is to handle ImDrawCmd::VtxOffset in your renderer.
+// Read about ImGuiBackendFlags_RendererHasVtxOffset for details.
+//#define ImDrawIdx unsigned int
+
+//---- Override ImDrawCallback signature (will need to modify renderer backends accordingly)
+//struct ImDrawList;
+//struct ImDrawCmd;
+//typedef void (*MyImDrawCallback)(const ImDrawList* draw_list, const ImDrawCmd* cmd, void* my_renderer_user_data);
+//#define ImDrawCallback MyImDrawCallback
+
+//---- Debug Tools: Macro to break in Debugger (we provide a default implementation of this in the codebase)
+// (use 'Metrics->Tools->Item Picker' to pick widgets with the mouse and break into them for easy debugging.)
+//#define IM_DEBUG_BREAK  IM_ASSERT(0)
+//#define IM_DEBUG_BREAK  __debugbreak()
+
+//---- Debug Tools: Enable highlight ID conflicts _before_ hovering items. When io.ConfigDebugHighlightIdConflicts is set.
+// (THIS WILL SLOW DOWN DEAR IMGUI. Only use occasionally and disable after use)
+//#define IMGUI_DEBUG_HIGHLIGHT_ALL_ID_CONFLICTS
+
+//---- Debug Tools: Enable slower asserts
+//#define IMGUI_DEBUG_PARANOID
+
+//---- Tip: You can add extra functions within the ImGui:: namespace from anywhere (e.g. your own sources/header files)
+/*
+namespace ImGui
+{
+    void MyFunction(const char* name, MyMatrix44* mtx);
+}
+*/

vendor/imgui/imstb_rectpack.h

@@ -0,0 +1,627 @@
+// [DEAR IMGUI]
+// This is a slightly modified version of stb_rect_pack.h 1.01.
+// Grep for [DEAR IMGUI] to find the changes.
+// 
+// stb_rect_pack.h - v1.01 - public domain - rectangle packing
+// Sean Barrett 2014
+//
+// Useful for e.g. packing rectangular textures into an atlas.
+// Does not do rotation.
+//
+// Before #including,
+//
+//    #define STB_RECT_PACK_IMPLEMENTATION
+//
+// in the file that you want to have the implementation.
+//
+// Not necessarily the awesomest packing method, but better than
+// the totally naive one in stb_truetype (which is primarily what
+// this is meant to replace).
+//
+// Has only had a few tests run, may have issues.
+//
+// More docs to come.
+//
+// No memory allocations; uses qsort() and assert() from stdlib.
+// Can override those by defining STBRP_SORT and STBRP_ASSERT.
+//
+// This library currently uses the Skyline Bottom-Left algorithm.
+//
+// Please note: better rectangle packers are welcome! Please
+// implement them to the same API, but with a different init
+// function.
+//
+// Credits
+//
+//  Library
+//    Sean Barrett
+//  Minor features
+//    Martins Mozeiko
+//    github:IntellectualKitty
+//
+//  Bugfixes / warning fixes
+//    Jeremy Jaussaud
+//    Fabian Giesen
+//
+// Version history:
+//
+//     1.01  (2021-07-11)  always use large rect mode, expose STBRP__MAXVAL in public section
+//     1.00  (2019-02-25)  avoid small space waste; gracefully fail too-wide rectangles
+//     0.99  (2019-02-07)  warning fixes
+//     0.11  (2017-03-03)  return packing success/fail result
+//     0.10  (2016-10-25)  remove cast-away-const to avoid warnings
+//     0.09  (2016-08-27)  fix compiler warnings
+//     0.08  (2015-09-13)  really fix bug with empty rects (w=0 or h=0)
+//     0.07  (2015-09-13)  fix bug with empty rects (w=0 or h=0)
+//     0.06  (2015-04-15)  added STBRP_SORT to allow replacing qsort
+//     0.05:  added STBRP_ASSERT to allow replacing assert
+//     0.04:  fixed minor bug in STBRP_LARGE_RECTS support
+//     0.01:  initial release
+//
+// LICENSE
+//
+//   See end of file for license information.
+
+//////////////////////////////////////////////////////////////////////////////
+//
+//       INCLUDE SECTION
+//
+
+#ifndef STB_INCLUDE_STB_RECT_PACK_H
+#define STB_INCLUDE_STB_RECT_PACK_H
+
+#define STB_RECT_PACK_VERSION  1
+
+#ifdef STBRP_STATIC
+#define STBRP_DEF static
+#else
+#define STBRP_DEF extern
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct stbrp_context stbrp_context;
+typedef struct stbrp_node    stbrp_node;
+typedef struct stbrp_rect    stbrp_rect;
+
+typedef int            stbrp_coord;
+
+#define STBRP__MAXVAL  0x7fffffff
+// Mostly for internal use, but this is the maximum supported coordinate value.
+
+STBRP_DEF int stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects);
+// Assign packed locations to rectangles. The rectangles are of type
+// 'stbrp_rect' defined below, stored in the array 'rects', and there
+// are 'num_rects' many of them.
+//
+// Rectangles which are successfully packed have the 'was_packed' flag
+// set to a non-zero value and 'x' and 'y' store the minimum location
+// on each axis (i.e. bottom-left in cartesian coordinates, top-left
+// if you imagine y increasing downwards). Rectangles which do not fit
+// have the 'was_packed' flag set to 0.
+//
+// You should not try to access the 'rects' array from another thread
+// while this function is running, as the function temporarily reorders
+// the array while it executes.
+//
+// To pack into another rectangle, you need to call stbrp_init_target
+// again. To continue packing into the same rectangle, you can call
+// this function again. Calling this multiple times with multiple rect
+// arrays will probably produce worse packing results than calling it
+// a single time with the full rectangle array, but the option is
+// available.
+//
+// The function returns 1 if all of the rectangles were successfully
+// packed and 0 otherwise.
+
+struct stbrp_rect
+{
+   // reserved for your use:
+   int            id;
+
+   // input:
+   stbrp_coord    w, h;
+
+   // output:
+   stbrp_coord    x, y;
+   int            was_packed;  // non-zero if valid packing
+
+}; // 16 bytes, nominally
+
+
+STBRP_DEF void stbrp_init_target (stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes);
+// Initialize a rectangle packer to:
+//    pack a rectangle that is 'width' by 'height' in dimensions
+//    using temporary storage provided by the array 'nodes', which is 'num_nodes' long
+//
+// You must call this function every time you start packing into a new target.
+//
+// There is no "shutdown" function. The 'nodes' memory must stay valid for
+// the following stbrp_pack_rects() call (or calls), but can be freed after
+// the call (or calls) finish.
+//
+// Note: to guarantee best results, either:
+//       1. make sure 'num_nodes' >= 'width'
+//   or  2. call stbrp_allow_out_of_mem() defined below with 'allow_out_of_mem = 1'
+//
+// If you don't do either of the above things, widths will be quantized to multiples
+// of small integers to guarantee the algorithm doesn't run out of temporary storage.
+//
+// If you do #2, then the non-quantized algorithm will be used, but the algorithm
+// may run out of temporary storage and be unable to pack some rectangles.
+
+STBRP_DEF void stbrp_setup_allow_out_of_mem (stbrp_context *context, int allow_out_of_mem);
+// Optionally call this function after init but before doing any packing to
+// change the handling of the out-of-temp-memory scenario, described above.
+// If you call init again, this will be reset to the default (false).
+
+
+STBRP_DEF void stbrp_setup_heuristic (stbrp_context *context, int heuristic);
+// Optionally select which packing heuristic the library should use. Different
+// heuristics will produce better/worse results for different data sets.
+// If you call init again, this will be reset to the default.
+
+enum
+{
+   STBRP_HEURISTIC_Skyline_default=0,
+   STBRP_HEURISTIC_Skyline_BL_sortHeight = STBRP_HEURISTIC_Skyline_default,
+   STBRP_HEURISTIC_Skyline_BF_sortHeight
+};
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// the details of the following structures don't matter to you, but they must
+// be visible so you can handle the memory allocations for them
+
+struct stbrp_node
+{
+   stbrp_coord  x,y;
+   stbrp_node  *next;
+};
+
+struct stbrp_context
+{
+   int width;
+   int height;
+   int align;
+   int init_mode;
+   int heuristic;
+   int num_nodes;
+   stbrp_node *active_head;
+   stbrp_node *free_head;
+   stbrp_node extra[2]; // we allocate two extra nodes so optimal user-node-count is 'width' not 'width+2'
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+//////////////////////////////////////////////////////////////////////////////
+//
+//     IMPLEMENTATION SECTION
+//
+
+#ifdef STB_RECT_PACK_IMPLEMENTATION
+#ifndef STBRP_SORT
+#include <stdlib.h>
+#define STBRP_SORT qsort
+#endif
+
+#ifndef STBRP_ASSERT
+#include <assert.h>
+#define STBRP_ASSERT assert
+#endif
+
+#ifdef _MSC_VER
+#define STBRP__NOTUSED(v)  (void)(v)
+#define STBRP__CDECL       __cdecl
+#else
+#define STBRP__NOTUSED(v)  (void)sizeof(v)
+#define STBRP__CDECL
+#endif
+
+enum
+{
+   STBRP__INIT_skyline = 1
+};
+
+STBRP_DEF void stbrp_setup_heuristic(stbrp_context *context, int heuristic)
+{
+   switch (context->init_mode) {
+      case STBRP__INIT_skyline:
+         STBRP_ASSERT(heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight || heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight);
+         context->heuristic = heuristic;
+         break;
+      default:
+         STBRP_ASSERT(0);
+   }
+}
+
+STBRP_DEF void stbrp_setup_allow_out_of_mem(stbrp_context *context, int allow_out_of_mem)
+{
+   if (allow_out_of_mem)
+      // if it's ok to run out of memory, then don't bother aligning them;
+      // this gives better packing, but may fail due to OOM (even though
+      // the rectangles easily fit). @TODO a smarter approach would be to only
+      // quantize once we've hit OOM, then we could get rid of this parameter.
+      context->align = 1;
+   else {
+      // if it's not ok to run out of memory, then quantize the widths
+      // so that num_nodes is always enough nodes.
+      //
+      // I.e. num_nodes * align >= width
+      //                  align >= width / num_nodes
+      //                  align = ceil(width/num_nodes)
+
+      context->align = (context->width + context->num_nodes-1) / context->num_nodes;
+   }
+}
+
+STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes)
+{
+   int i;
+
+   for (i=0; i < num_nodes-1; ++i)
+      nodes[i].next = &nodes[i+1];
+   nodes[i].next = NULL;
+   context->init_mode = STBRP__INIT_skyline;
+   context->heuristic = STBRP_HEURISTIC_Skyline_default;
+   context->free_head = &nodes[0];
+   context->active_head = &context->extra[0];
+   context->width = width;
+   context->height = height;
+   context->num_nodes = num_nodes;
+   stbrp_setup_allow_out_of_mem(context, 0);
+
+   // node 0 is the full width, node 1 is the sentinel (lets us not store width explicitly)
+   context->extra[0].x = 0;
+   context->extra[0].y = 0;
+   context->extra[0].next = &context->extra[1];
+   context->extra[1].x = (stbrp_coord) width;
+   context->extra[1].y = (1<<30);
+   context->extra[1].next = NULL;
+}
+
+// find minimum y position if it starts at x1
+static int stbrp__skyline_find_min_y(stbrp_context *c, stbrp_node *first, int x0, int width, int *pwaste)
+{
+   stbrp_node *node = first;
+   int x1 = x0 + width;
+   int min_y, visited_width, waste_area;
+
+   STBRP__NOTUSED(c);
+
+   STBRP_ASSERT(first->x <= x0);
+
+   #if 0
+   // skip in case we're past the node
+   while (node->next->x <= x0)
+      ++node;
+   #else
+   STBRP_ASSERT(node->next->x > x0); // we ended up handling this in the caller for efficiency
+   #endif
+
+   STBRP_ASSERT(node->x <= x0);
+
+   min_y = 0;
+   waste_area = 0;
+   visited_width = 0;
+   while (node->x < x1) {
+      if (node->y > min_y) {
+         // raise min_y higher.
+         // we've accounted for all waste up to min_y,
+         // but we'll now add more waste for everything we've visited
+         waste_area += visited_width * (node->y - min_y);
+         min_y = node->y;
+         // the first time through, visited_width might be reduced
+         if (node->x < x0)
+            visited_width += node->next->x - x0;
+         else
+            visited_width += node->next->x - node->x;
+      } else {
+         // add waste area
+         int under_width = node->next->x - node->x;
+         if (under_width + visited_width > width)
+            under_width = width - visited_width;
+         waste_area += under_width * (min_y - node->y);
+         visited_width += under_width;
+      }
+      node = node->next;
+   }
+
+   *pwaste = waste_area;
+   return min_y;
+}
+
+typedef struct
+{
+   int x,y;
+   stbrp_node **prev_link;
+} stbrp__findresult;
+
+static stbrp__findresult stbrp__skyline_find_best_pos(stbrp_context *c, int width, int height)
+{
+   int best_waste = (1<<30), best_x, best_y = (1 << 30);
+   stbrp__findresult fr;
+   stbrp_node **prev, *node, *tail, **best = NULL;
+
+   // align to multiple of c->align
+   width = (width + c->align - 1);
+   width -= width % c->align;
+   STBRP_ASSERT(width % c->align == 0);
+
+   // if it can't possibly fit, bail immediately
+   if (width > c->width || height > c->height) {
+      fr.prev_link = NULL;
+      fr.x = fr.y = 0;
+      return fr;
+   }
+
+   node = c->active_head;
+   prev = &c->active_head;
+   while (node->x + width <= c->width) {
+      int y,waste;
+      y = stbrp__skyline_find_min_y(c, node, node->x, width, &waste);
+      if (c->heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight) { // actually just want to test BL
+         // bottom left
+         if (y < best_y) {
+            best_y = y;
+            best = prev;
+         }
+      } else {
+         // best-fit
+         if (y + height <= c->height) {
+            // can only use it if it first vertically
+            if (y < best_y || (y == best_y && waste < best_waste)) {
+               best_y = y;
+               best_waste = waste;
+               best = prev;
+            }
+         }
+      }
+      prev = &node->next;
+      node = node->next;
+   }
+
+   best_x = (best == NULL) ? 0 : (*best)->x;
+
+   // if doing best-fit (BF), we also have to try aligning right edge to each node position
+   //
+   // e.g, if fitting
+   //
+   //     ____________________
+   //    |____________________|
+   //
+   //            into
+   //
+   //   |                         |
+   //   |             ____________|
+   //   |____________|
+   //
+   // then right-aligned reduces waste, but bottom-left BL is always chooses left-aligned
+   //
+   // This makes BF take about 2x the time
+
+   if (c->heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight) {
+      tail = c->active_head;
+      node = c->active_head;
+      prev = &c->active_head;
+      // find first node that's admissible
+      while (tail->x < width)
+         tail = tail->next;
+      while (tail) {
+         int xpos = tail->x - width;
+         int y,waste;
+         STBRP_ASSERT(xpos >= 0);
+         // find the left position that matches this
+         while (node->next->x <= xpos) {
+            prev = &node->next;
+            node = node->next;
+         }
+         STBRP_ASSERT(node->next->x > xpos && node->x <= xpos);
+         y = stbrp__skyline_find_min_y(c, node, xpos, width, &waste);
+         if (y + height <= c->height) {
+            if (y <= best_y) {
+               if (y < best_y || waste < best_waste || (waste==best_waste && xpos < best_x)) {
+                  best_x = xpos;
+                  //STBRP_ASSERT(y <= best_y); [DEAR IMGUI]
+                  best_y = y;
+                  best_waste = waste;
+                  best = prev;
+               }
+            }
+         }
+         tail = tail->next;
+      }
+   }
+
+   fr.prev_link = best;
+   fr.x = best_x;
+   fr.y = best_y;
+   return fr;
+}
+
+static stbrp__findresult stbrp__skyline_pack_rectangle(stbrp_context *context, int width, int height)
+{
+   // find best position according to heuristic
+   stbrp__findresult res = stbrp__skyline_find_best_pos(context, width, height);
+   stbrp_node *node, *cur;
+
+   // bail if:
+   //    1. it failed
+   //    2. the best node doesn't fit (we don't always check this)
+   //    3. we're out of memory
+   if (res.prev_link == NULL || res.y + height > context->height || context->free_head == NULL) {
+      res.prev_link = NULL;
+      return res;
+   }
+
+   // on success, create new node
+   node = context->free_head;
+   node->x = (stbrp_coord) res.x;
+   node->y = (stbrp_coord) (res.y + height);
+
+   context->free_head = node->next;
+
+   // insert the new node into the right starting point, and
+   // let 'cur' point to the remaining nodes needing to be
+   // stitched back in
+
+   cur = *res.prev_link;
+   if (cur->x < res.x) {
+      // preserve the existing one, so start testing with the next one
+      stbrp_node *next = cur->next;
+      cur->next = node;
+      cur = next;
+   } else {
+      *res.prev_link = node;
+   }
+
+   // from here, traverse cur and free the nodes, until we get to one
+   // that shouldn't be freed
+   while (cur->next && cur->next->x <= res.x + width) {
+      stbrp_node *next = cur->next;
+      // move the current node to the free list
+      cur->next = context->free_head;
+      context->free_head = cur;
+      cur = next;
+   }
+
+   // stitch the list back in
+   node->next = cur;
+
+   if (cur->x < res.x + width)
+      cur->x = (stbrp_coord) (res.x + width);
+
+#ifdef _DEBUG
+   cur = context->active_head;
+   while (cur->x < context->width) {
+      STBRP_ASSERT(cur->x < cur->next->x);
+      cur = cur->next;
+   }
+   STBRP_ASSERT(cur->next == NULL);
+
+   {
+      int count=0;
+      cur = context->active_head;
+      while (cur) {
+         cur = cur->next;
+         ++count;
+      }
+      cur = context->free_head;
+      while (cur) {
+         cur = cur->next;
+         ++count;
+      }
+      STBRP_ASSERT(count == context->num_nodes+2);
+   }
+#endif
+
+   return res;
+}
+
+static int STBRP__CDECL rect_height_compare(const void *a, const void *b)
+{
+   const stbrp_rect *p = (const stbrp_rect *) a;
+   const stbrp_rect *q = (const stbrp_rect *) b;
+   if (p->h > q->h)
+      return -1;
+   if (p->h < q->h)
+      return  1;
+   return (p->w > q->w) ? -1 : (p->w < q->w);
+}
+
+static int STBRP__CDECL rect_original_order(const void *a, const void *b)
+{
+   const stbrp_rect *p = (const stbrp_rect *) a;
+   const stbrp_rect *q = (const stbrp_rect *) b;
+   return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed);
+}
+
+STBRP_DEF int stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
+{
+   int i, all_rects_packed = 1;
+
+   // we use the 'was_packed' field internally to allow sorting/unsorting
+   for (i=0; i < num_rects; ++i) {
+      rects[i].was_packed = i;
+   }
+
+   // sort according to heuristic
+   STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_height_compare);
+
+   for (i=0; i < num_rects; ++i) {
+      if (rects[i].w == 0 || rects[i].h == 0) {
+         rects[i].x = rects[i].y = 0;  // empty rect needs no space
+      } else {
+         stbrp__findresult fr = stbrp__skyline_pack_rectangle(context, rects[i].w, rects[i].h);
+         if (fr.prev_link) {
+            rects[i].x = (stbrp_coord) fr.x;
+            rects[i].y = (stbrp_coord) fr.y;
+         } else {
+            rects[i].x = rects[i].y = STBRP__MAXVAL;
+         }
+      }
+   }
+
+   // unsort
+   STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_original_order);
+
+   // set was_packed flags and all_rects_packed status
+   for (i=0; i < num_rects; ++i) {
+      rects[i].was_packed = !(rects[i].x == STBRP__MAXVAL && rects[i].y == STBRP__MAXVAL);
+      if (!rects[i].was_packed)
+         all_rects_packed = 0;
+   }
+
+   // return the all_rects_packed status
+   return all_rects_packed;
+}
+#endif
+
+/*
+------------------------------------------------------------------------------
+This software is available under 2 licenses -- choose whichever you prefer.
+------------------------------------------------------------------------------
+ALTERNATIVE A - MIT License
+Copyright (c) 2017 Sean Barrett
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+------------------------------------------------------------------------------
+ALTERNATIVE B - Public Domain (www.unlicense.org)
+This is free and unencumbered software released into the public domain.
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
+software, either in source code form or as a compiled binary, for any purpose,
+commercial or non-commercial, and by any means.
+In jurisdictions that recognize copyright laws, the author or authors of this
+software dedicate any and all copyright interest in the software to the public
+domain. We make this dedication for the benefit of the public at large and to
+the detriment of our heirs and successors. We intend this dedication to be an
+overt act of relinquishment in perpetuity of all present and future rights to
+this software under copyright law.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+------------------------------------------------------------------------------
+*/

vendor/imgui/misc/README.txt

@@ -0,0 +1,23 @@
+
+misc/cpp/
+  InputText() wrappers for C++ standard library (STL) type: std::string.
+  This is also an example of how you may wrap your own similar types.
+
+misc/debuggers/
+  Helper files for popular debuggers (Visual Studio, GDB, LLDB).
+  e.g. With the .natvis file, types like ImVector<> will be displayed nicely in Visual Studio debugger.
+
+misc/fonts/
+  Fonts loading/merging instructions (e.g. How to handle glyph ranges, how to merge icons fonts).
+  Command line tool "binary_to_compressed_c" to create compressed arrays to embed data in source code.
+  Suggested fonts and links.
+
+misc/freetype/
+  Font atlas builder/rasterizer using FreeType instead of stb_truetype.
+  Benefit from better FreeType rasterization, in particular for small fonts.
+
+misc/single_file/
+  Single-file header stub.
+  We use this to validate compiling all *.cpp files in a same compilation unit.
+  Users of that technique (also called "Unity builds") can generally provide this themselves,
+  so we don't really recommend you use this in your projects.

vendor/imgui/misc/cpp/README.txt

@@ -0,0 +1,17 @@
+
+imgui_stdlib.h + imgui_stdlib.cpp
+  InputText() wrappers for C++ standard library (STL) type: std::string.
+  This is also an example of how you may wrap your own similar types.
+
+imgui_scoped.h
+  [Experimental, not currently in main repository]
+  Additional header file with some RAII-style wrappers for common Dear ImGui functions.
+  Try by merging: https://github.com/ocornut/imgui/pull/2197
+  Discuss at: https://github.com/ocornut/imgui/issues/2096
+
+imgui-module:
+  C++20 module binding
+  https://github.com/stripe2933/imgui-module
+
+See more C++ related extension (fmt, RAII, syntactic sugar) on Wiki:
+  https://github.com/ocornut/imgui/wiki/Useful-Extensions#cness

vendor/imgui/misc/cpp/imgui_stdlib.cpp

@@ -0,0 +1,100 @@
+// dear imgui: wrappers for C++ standard library (STL) types (std::string, etc.)
+
+// This is also an example of how you may wrap your own similar types.
+// TL;DR; this is using the ImGuiInputTextFlags_CallbackResize facility,
+// which also demonstrated in 'Dear ImGui Demo->Widgets->Text Input->Resize Callback'.
+
+// Changelog:
+// - v0.10: Initial version. Added InputText() / InputTextMultiline() calls with std::string
+
+// Usage:
+// {
+//   #include "misc/cpp/imgui_stdlib.h"
+//   #include "misc/cpp/imgui_stdlib.cpp" // <-- If you want to include implementation without messing with your project/build.
+//   [...]
+//   std::string my_string;
+//   ImGui::InputText("my string", &my_string);
+// }
+
+// See more C++ related extension (fmt, RAII, syntactic sugar) on Wiki:
+//   https://github.com/ocornut/imgui/wiki/Useful-Extensions#cness
+
+#include "imgui.h"
+#ifndef IMGUI_DISABLE
+#include "imgui_stdlib.h"
+
+// Clang warnings with -Weverything
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wsign-conversion"    // warning: implicit conversion changes signedness
+#endif
+
+struct InputTextCallback_UserData
+{
+    std::string*            Str;
+    ImGuiInputTextCallback  ChainCallback;
+    void*                   ChainCallbackUserData;
+};
+
+static int InputTextCallback(ImGuiInputTextCallbackData* data)
+{
+    InputTextCallback_UserData* user_data = (InputTextCallback_UserData*)data->UserData;
+    if (data->EventFlag == ImGuiInputTextFlags_CallbackResize)
+    {
+        // Resize string callback
+        // If for some reason we refuse the new length (BufTextLen) and/or capacity (BufSize) we need to set them back to what we want.
+        std::string* str = user_data->Str;
+        IM_ASSERT(data->Buf == str->c_str());
+        str->resize(data->BufTextLen);
+        data->Buf = (char*)str->c_str();
+    }
+    else if (user_data->ChainCallback)
+    {
+        // Forward to user callback, if any
+        data->UserData = user_data->ChainCallbackUserData;
+        return user_data->ChainCallback(data);
+    }
+    return 0;
+}
+
+bool ImGui::InputText(const char* label, std::string* str, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
+{
+    IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);
+    flags |= ImGuiInputTextFlags_CallbackResize;
+
+    InputTextCallback_UserData cb_user_data;
+    cb_user_data.Str = str;
+    cb_user_data.ChainCallback = callback;
+    cb_user_data.ChainCallbackUserData = user_data;
+    return InputText(label, (char*)str->c_str(), str->capacity() + 1, flags, InputTextCallback, &cb_user_data);
+}
+
+bool ImGui::InputTextMultiline(const char* label, std::string* str, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
+{
+    IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);
+    flags |= ImGuiInputTextFlags_CallbackResize;
+
+    InputTextCallback_UserData cb_user_data;
+    cb_user_data.Str = str;
+    cb_user_data.ChainCallback = callback;
+    cb_user_data.ChainCallbackUserData = user_data;
+    return InputTextMultiline(label, (char*)str->c_str(), str->capacity() + 1, size, flags, InputTextCallback, &cb_user_data);
+}
+
+bool ImGui::InputTextWithHint(const char* label, const char* hint, std::string* str, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
+{
+    IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);
+    flags |= ImGuiInputTextFlags_CallbackResize;
+
+    InputTextCallback_UserData cb_user_data;
+    cb_user_data.Str = str;
+    cb_user_data.ChainCallback = callback;
+    cb_user_data.ChainCallbackUserData = user_data;
+    return InputTextWithHint(label, hint, (char*)str->c_str(), str->capacity() + 1, flags, InputTextCallback, &cb_user_data);
+}
+
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
+
+#endif // #ifndef IMGUI_DISABLE

vendor/imgui/misc/cpp/imgui_stdlib.h

@@ -0,0 +1,37 @@
+// dear imgui: wrappers for C++ standard library (STL) types (std::string, etc.)
+
+// This is also an example of how you may wrap your own similar types.
+// TL;DR; this is using the ImGuiInputTextFlags_CallbackResize facility,
+// which also demonstrated in 'Dear ImGui Demo->Widgets->Text Input->Resize Callback'.
+
+// Changelog:
+// - v0.10: Initial version. Added InputText() / InputTextMultiline() calls with std::string
+
+// Usage:
+// {
+//   #include "misc/cpp/imgui_stdlib.h"
+//   #include "misc/cpp/imgui_stdlib.cpp" // <-- If you want to include implementation without messing with your project/build.
+//   [...]
+//   std::string my_string;
+//   ImGui::InputText("my string", &my_string);
+// }
+
+// See more C++ related extension (fmt, RAII, syntaxis sugar) on Wiki:
+//   https://github.com/ocornut/imgui/wiki/Useful-Extensions#cness
+
+#pragma once
+
+#ifndef IMGUI_DISABLE
+
+#include <string>
+
+namespace ImGui
+{
+    // ImGui::InputText() with std::string
+    // Because text input needs dynamic resizing, we need to setup a callback to grow the capacity
+    IMGUI_API bool  InputText(const char* label, std::string* str, ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = nullptr, void* user_data = nullptr);
+    IMGUI_API bool  InputTextMultiline(const char* label, std::string* str, const ImVec2& size = ImVec2(0, 0), ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = nullptr, void* user_data = nullptr);
+    IMGUI_API bool  InputTextWithHint(const char* label, const char* hint, std::string* str, ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = nullptr, void* user_data = nullptr);
+}
+
+#endif // #ifndef IMGUI_DISABLE

vendor/imgui/misc/debuggers/README.txt

@@ -0,0 +1,39 @@
+
+-----------------------------------------------------------------------------
+ HELPER FILES FOR POPULAR DEBUGGERS
+-----------------------------------------------------------------------------
+
+imgui.gdb
+    GDB: disable stepping into trivial functions (*1).
+    (read comments inside file for details)
+
+imgui.natstepfilter
+    Visual Studio Debugger: disable stepping into trivial functions (*1).
+    (read comments inside file for details)
+
+imgui.natvis
+    Visual Studio Debugger: describe Dear ImGui types for better display.
+    With this, types like ImVector<> will be displayed nicely in the debugger.
+    (read comments inside file for details)
+
+imgui_lldb.py
+    LLDB-based debuggers (*2): synthetic children provider and summaries for Dear ImGui types.
+    With this, types like ImVector<> will be displayed nicely in the debugger.
+    (read comments inside file for details)
+    (*2) Xcode, Android Studio, may be used from VS Code, C++Builder, CLion, Eclipse etc.
+
+-----------------------------------------------------------------------------
+ NEW! DISABLED STEPPING INTO TRIVIAL FUNCTIONS
+-----------------------------------------------------------------------------
+
+Since 1.93.0 WIP (September 2026),
+Dear ImGui uses a IM_NODEBUGSTEP macro to tag functions with __declspec(non_user_code)
+or [[gnu::artificial]] to automatically tell debuggers to skip them.
+
+(*1) Assuming the new IM_NODEBUGSTEP macro works, using imgui.natstepfilter etc.
+may become unnecessary. Exact side effects on user experience yet to be clarified.
+
+Additional references:
+    https://maskray.me/blog/skipping-boring-functions-in-debuggers
+    and https://news.ycombinator.com/item?id=42547576
+

vendor/imgui/misc/debuggers/imgui.gdb

@@ -0,0 +1,13 @@
+# GDB configuration to aid debugging experience
+
+# To enable these customizations edit $HOME/.gdbinit (or ./.gdbinit if local gdbinit is enabled) and add:
+#   add-auto-load-safe-path /path/to/imgui.gdb
+#   source /path/to/imgui.gdb
+#
+# More Information at:
+#   * https://sourceware.org/gdb/current/onlinedocs/gdb/gdbinit-man.html
+#   * https://sourceware.org/gdb/current/onlinedocs/gdb/Init-File-in-the-Current-Directory.html#Init-File-in-the-Current-Directory
+
+# Disable stepping into trivial functions
+# ...since Dear ImGui 1.93.0 WIP (September 2026): we use a IM_NODEBUGSTEP() macro to provide the equivalent feature via [[gnu::artificial]].
+skip -rfunction Im(Vec2|Vec4|Strv|Vector|Span)::.+

vendor/imgui/misc/debuggers/imgui.natstepfilter

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+.natstepfilter file for Visual Studio debugger.
+Purpose: instruct debugger to skip some functions when using StepInto (F11)
+
+Since Visual Studio 2022 version 17.6 Preview 2 (currently available as a "Preview" build on March 14, 2023)
+It is possible to add the .natstepfilter file to your project file and it will automatically be used.
+(https://developercommunity.visualstudio.com/t/allow-natstepfilter-and-natjmc-to-be-included-as-p/561718)
+
+For older Visual Studio version prior to 2022 17.6 Preview 2:
+* copy in %USERPROFILE%\Documents\Visual Studio XXXX\Visualizers (current user)
+* or copy in %VsInstallDirectory%\Common7\Packages\Debugger\Visualizers (all users)
+If you have multiple VS version installed, the version that matters is the one you are using the IDE/debugger
+of (not the compiling toolset). This is supported since Visual Studio 2012.
+
+More information at: https://docs.microsoft.com/en-us/visualstudio/debugger/just-my-code?view=vs-2019#BKMK_C___Just_My_Code
+
+Since Dear ImGui 1.93.0 WIP (September 2026): we use a IM_NODEBUGSTEP() macro to provide the equivalent feature via __declspec(non_user_code).
+-->
+
+<StepFilter xmlns="http://schemas.microsoft.com/vstudio/debugger/natstepfilter/2010">
+
+    <!-- Disable stepping into trivial functions -->
+    <Function>
+        <Name>(ImVec2|ImVec4|ImStrv)::.+</Name>
+        <Action>NoStepInto</Action>
+    </Function>
+    <Function>
+        <Name>(ImVector|ImSpan).*::operator.+</Name>
+        <Action>NoStepInto</Action>
+    </Function>
+
+</StepFilter>

vendor/imgui/misc/debuggers/imgui.natvis

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+.natvis file for Visual Studio debugger.
+Purpose: provide nicer views on data types used by Dear ImGui.
+
+To enable:
+* include file in your VS project (most recommended: not intrusive and always kept up to date!)
+* or copy in %USERPROFILE%\Documents\Visual Studio XXXX\Visualizers (current user)
+* or copy in %VsInstallDirectory%\Common7\Packages\Debugger\Visualizers (all users)
+
+More information at: https://docs.microsoft.com/en-us/visualstudio/debugger/create-custom-views-of-native-objects?view=vs-2019
+-->
+
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+
+<Type Name="ImVector&lt;*&gt;">
+  <DisplayString>{{Size={Size} Capacity={Capacity}}}</DisplayString>
+  <Expand>
+    <ArrayItems>
+      <Size>Size</Size>
+      <ValuePointer>Data</ValuePointer>
+    </ArrayItems>
+  </Expand>
+</Type>
+
+<Type Name="ImSpan&lt;*&gt;">
+  <DisplayString>{{Size={DataEnd-Data} }}</DisplayString>
+  <Expand>
+    <ArrayItems>
+      <Size>DataEnd-Data</Size>
+      <ValuePointer>Data</ValuePointer>
+    </ArrayItems>
+  </Expand>
+</Type>
+
+<Type Name="ImVec2">
+  <DisplayString>{{x={x,g} y={y,g}}}</DisplayString>
+</Type>
+
+<Type Name="ImVec4">
+  <DisplayString>{{x={x,g} y={y,g} z={z,g} w={w,g}}}</DisplayString>
+</Type>
+
+<Type Name="ImRect">
+  <DisplayString>{{Min=({Min.x,g} {Min.y,g}) Max=({Max.x,g} {Max.y,g}) Size=({Max.x-Min.x,g} {Max.y-Min.y,g})}}</DisplayString>
+  <Expand>
+    <Item Name="Min">Min</Item>
+    <Item Name="Max">Max</Item>
+    <Item Name="[Width]">Max.x - Min.x</Item>
+    <Item Name="[Height]">Max.y - Min.y</Item>
+  </Expand>
+</Type>
+
+<Type Name="ImGuiWindow">
+  <DisplayString>{{Name {Name,s} Active {(Active||WasActive)?1:0,d} Child {(Flags &amp; 0x01000000)?1:0,d} Popup {(Flags &amp; 0x04000000)?1:0,d} Hidden {(Hidden)?1:0,d}}</DisplayString>
+</Type>
+
+<Type Name="ImGuiDockNode">
+  <DisplayString>{{ID {ID,x} Pos=({Pos.x,g} {Pos.y,g}) Size=({Size.x,g} {Size.y,g}) Parent {(ParentNode==0)?0:ParentNode->ID,x} Childs {(ChildNodes[0] != 0)+(ChildNodes[1] != 0)} Windows {Windows.Size}  }</DisplayString>
+</Type>
+
+</AutoVisualizer>

vendor/imgui/misc/debuggers/imgui_lldb.py

@@ -0,0 +1,189 @@
+# This file implements synthetic children providers and summaries for various Dear ImGui types for LLDB.
+# LLDB is used by Xcode, Android Studio, and may be used from VS Code, C++Builder, CLion, Eclipse etc.
+
+#
+# Useful links/documentation related to the feature:
+# - https://lldb.llvm.org/use/variable.html#summary-strings
+# - https://lldb.llvm.org/use/variable.html#synthetic-children
+# - https://lldb.llvm.org/python_reference/lldb-module.html
+#
+# To use it in a debug session:
+# > (lldb) command script import <path-to-this-file>
+#
+# Alternatively you may include the above command in your ~/.lldbinit file to have the formatters
+# available in all future sessions
+
+import lldb
+
+class ArraySynthBase(object):
+	"""
+	Helper baseclass aimed to reduce the boilerplate needed for "array-like" containers
+	"""
+
+	def __init__(self, valobj, internal_dict):
+		self.valobj = valobj
+
+	def bind_to(self, pointer, size):
+		array_p = pointer.GetType().GetPointeeType().GetArrayType(size).GetPointerType()
+		self.array = pointer.Cast(array_p).Dereference()
+
+	def update(self):
+		self.array = self.valobj
+
+	def num_children(self, max_children):
+		return self.array.GetNumChildren(max_children)
+
+	def get_child_index(self, name):
+		return self.array.GetIndexOfChildWithName(name)
+
+	def get_child_at_index(self, index):
+		return self.array.GetChildAtIndex(index)
+
+	def has_children(self):
+		return self.array.MightHaveChildren()
+
+	def get_value(self):
+		return self.array
+
+class ImVectorSynth(ArraySynthBase):
+	def update(self):
+		self.size = self.valobj.GetChildMemberWithName("Size").GetValueAsUnsigned()
+		self.capacity = self.valobj.GetChildMemberWithName("Capacity").GetValueAsUnsigned()
+
+		data = self.valobj.GetChildMemberWithName("Data")
+		
+		self.bind_to(data, self.size)
+
+	def get_summary(self):
+		return f"Size={self.size} Capacity={self.capacity}"
+
+class ImSpanSynth(ArraySynthBase):
+	def update(self):
+		data = self.valobj.GetChildMemberWithName("Data")
+		end = self.valobj.GetChildMemberWithName("DataEnd")
+		
+		element_size = data.GetType().GetPointeeType().GetByteSize()
+		array_size = end.GetValueAsUnsigned() - data.GetValueAsUnsigned()
+
+		self.size = int(array_size / element_size)
+
+		self.bind_to(data, self.size)
+
+	def get_summary(self):
+		return f"Size={self.size}"
+
+class ImRectSummary(object):
+	def __init__(self, valobj, internal_dict):
+		self.valobj = valobj
+
+	def update(self):
+		pass
+
+	def get_summary(self):
+		min = self.valobj.GetChildMemberWithName("Min")
+		max = self.valobj.GetChildMemberWithName("Max")
+
+		minX = float(min.GetChildMemberWithName("x").GetValue())
+		minY = float(min.GetChildMemberWithName("y").GetValue())
+
+		maxX = float(max.GetChildMemberWithName("x").GetValue())
+		maxY = float(max.GetChildMemberWithName("y").GetValue())
+
+		return f"Min=({minX}, {minY}) Max=({maxX}, {maxY}) Size=({maxX - minX}, {maxY - minY})"
+
+def get_active_enum_flags(valobj):
+	flag_set = set()
+
+	enum_name = valobj.GetType().GetName() + "_"
+	enum_type = valobj.GetTarget().FindFirstType(enum_name)
+
+	if not enum_type.IsValid():
+		return flag_set
+
+	enum_members = enum_type.GetEnumMembers()
+	value = valobj.GetValueAsUnsigned()
+
+	for i in range(0, enum_members.GetSize()):
+		member = enum_members.GetTypeEnumMemberAtIndex(i)
+
+		if value & member.GetValueAsUnsigned():
+			flag_set.add(member.GetName().removeprefix(enum_name))
+
+	return flag_set
+
+class ImGuiWindowSummary(object):
+	def __init__(self, valobj, internal_dict):
+		self.valobj = valobj
+
+	def update(self):
+		pass
+
+	def get_summary(self):
+		name = self.valobj.GetChildMemberWithName("Name").GetSummary()
+
+		active = self.valobj.GetChildMemberWithName("Active").GetValueAsUnsigned() != 0
+		was_active = self.valobj.GetChildMemberWithName("WasActive").GetValueAsUnsigned() != 0
+		hidden = self.valobj.GetChildMemberWithName("Hidden") != 0
+
+		flags = get_active_enum_flags(self.valobj.GetChildMemberWithName("Flags"))
+
+		active = 1 if  active or was_active else 0
+		child = 1 if "ChildWindow" in flags else 0
+		popup = 1 if "Popup" in flags else 0
+		hidden = 1 if hidden else 0
+
+		return f"Name {name} Active {active} Child {child} Popup {popup} Hidden {hidden}"
+
+
+def __lldb_init_module(debugger, internal_dict):
+	"""
+	This function will be automatically called by LLDB when the module is loaded, here
+	we register the various synthetics/summaries we have build before
+	"""
+
+	category_name = "imgui"
+	category = debugger.GetCategory(category_name)
+
+	# Make sure we don't accidentally keep accumulating languages or override the user's
+	# category enablement in Xcode, where lldb-rpc-server loads this file once for eac
+	# debugging session
+	if not category.IsValid():
+		category = debugger.CreateCategory(category_name)
+		category.AddLanguage(lldb.eLanguageTypeC_plus_plus)
+		category.SetEnabled(True)
+
+	def add_summary(typename, impl):
+		summary = None
+
+		if isinstance(impl, str):
+			summary = lldb.SBTypeSummary.CreateWithSummaryString(impl)
+			summary.SetOptions(lldb.eTypeOptionCascade)
+		else:
+			# Unfortunately programmatic summary string generation is an entirely different codepath
+			# in LLDB. Register a convenient trampoline function which makes it look like it's part
+			# of the SyntheticChildrenProvider contract
+			summary = lldb.SBTypeSummary.CreateWithScriptCode(f'''
+				synth = {impl.__module__}.{impl.__qualname__}(valobj.GetNonSyntheticValue(), internal_dict)
+				synth.update()
+
+				return synth.get_summary()
+			''')
+			summary.SetOptions(lldb.eTypeOptionCascade | lldb.eTypeOptionFrontEndWantsDereference)
+
+		category.AddTypeSummary(lldb.SBTypeNameSpecifier(typename, True), summary)
+
+	def add_synthetic(typename, impl):
+		add_summary(typename, impl)
+
+		synthetic = lldb.SBTypeSynthetic.CreateWithClassName(f"{impl.__module__}.{impl.__qualname__}")
+		synthetic.SetOptions(lldb.eTypeOptionCascade | lldb.eTypeOptionFrontEndWantsDereference)
+
+		category.AddTypeSynthetic(lldb.SBTypeNameSpecifier(typename, True), synthetic)
+
+	add_synthetic("^ImVector<.+>$", ImVectorSynth)
+	add_synthetic("^ImSpan<.+>$", ImSpanSynth)
+
+	add_summary("^ImVec2$", "x=${var.x} y=${var.y}")
+	add_summary("^ImVec4$", "x=${var.x} y=${var.y} z=${var.z} w=${var.w}")
+	add_summary("^ImRect$", ImRectSummary)
+	add_summary("^ImGuiWindow$", ImGuiWindowSummary)

vendor/imgui/misc/fonts/binary_to_compressed_c.cpp

@@ -0,0 +1,424 @@
+// dear imgui
+// (binary_to_compressed_c.cpp)
+// Helper tool to turn a file into a C array, if you want to embed font data in your source code.
+
+// The data is first compressed with stb_compress() to reduce source code size.
+// Then stored in a C array:
+// - Base85:   ~5 bytes of source code for 4 bytes of input data. 5 bytes stored in binary (suggested by @mmalex).
+// - As int:  ~11 bytes of source code for 4 bytes of input data. 4 bytes stored in binary. Endianness dependent, need swapping on big-endian CPU.
+// - As char: ~12 bytes of source code for 4 bytes of input data. 4 bytes stored in binary. Not endianness dependent.
+// Load compressed TTF fonts with ImGui::GetIO().Fonts->AddFontFromMemoryCompressedTTF()
+
+// Build with, e.g:
+//   # cl.exe binary_to_compressed_c.cpp
+//   # g++ binary_to_compressed_c.cpp
+//   # clang++ binary_to_compressed_c.cpp
+// You can also find a precompiled Windows binary in the binary/demo package available from https://github.com/ocornut/imgui
+
+// Usage:
+//   binary_to_compressed_c.exe [-nocompress] [-nostatic] [-base85] <inputfile> <symbolname>
+// Usage example:
+//   # binary_to_compressed_c.exe myfont.ttf MyFont > myfont.cpp
+//   # binary_to_compressed_c.exe -base85 myfont.ttf MyFont > myfont.cpp
+// Note:
+//   Base85 encoding will be obsoleted by future version of Dear ImGui!
+
+#define _CRT_SECURE_NO_WARNINGS
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+
+// stb_compress* from stb.h - declaration
+typedef unsigned int stb_uint;
+typedef unsigned char stb_uchar;
+stb_uint stb_compress(stb_uchar* out, stb_uchar* in, stb_uint len);
+
+enum SourceEncoding
+{
+    SourceEncoding_U8,      // New default since 2024/11
+    SourceEncoding_U32,
+    SourceEncoding_Base85,
+};
+
+static bool binary_to_compressed_c(const char* filename, const char* symbol, SourceEncoding source_encoding, bool use_compression, bool use_static);
+
+int main(int argc, char** argv)
+{
+    if (argc < 3)
+    {
+        printf("Syntax: %s [-u8|-u32|-base85] [-nocompress] [-nostatic] <inputfile> <symbolname>\n", argv[0]);
+        printf("Source encoding types:\n");
+        printf(" -u8     = ~12 bytes of source per 4 bytes of data. 4 bytes in binary.\n");
+        printf(" -u32    = ~11 bytes of source per 4 bytes of data. 4 bytes in binary. Need endianness swapping on big-endian.\n");
+        printf(" -base85 =  ~5 bytes of source per 4 bytes of data. 5 bytes in binary. Need decoder.\n");
+        return 0;
+    }
+
+    int argn = 1;
+    bool use_compression = true;
+    bool use_static = true;
+    SourceEncoding source_encoding = SourceEncoding_U8; // New default
+    while (argn < (argc - 2) && argv[argn][0] == '-')
+    {
+        if (strcmp(argv[argn], "-u8") == 0) { source_encoding = SourceEncoding_U8; argn++; }
+        else if (strcmp(argv[argn], "-u32") == 0) { source_encoding = SourceEncoding_U32; argn++; }
+        else if (strcmp(argv[argn], "-base85") == 0) { source_encoding = SourceEncoding_Base85; argn++; }
+        else if (strcmp(argv[argn], "-nocompress") == 0) { use_compression = false; argn++; }
+        else if (strcmp(argv[argn], "-nostatic") == 0) { use_static = false; argn++; }
+        else
+        {
+            fprintf(stderr, "Unknown argument: '%s'\n", argv[argn]);
+            return 1;
+        }
+    }
+
+    bool ret = binary_to_compressed_c(argv[argn], argv[argn + 1], source_encoding, use_compression, use_static);
+    if (!ret)
+        fprintf(stderr, "Error opening or reading file: '%s'\n", argv[argn]);
+    return ret ? 0 : 1;
+}
+
+char Encode85Byte(unsigned int x)
+{
+    x = (x % 85) + 35;
+    return (char)((x >= '\\') ? x + 1 : x);
+}
+
+bool binary_to_compressed_c(const char* filename, const char* symbol, SourceEncoding source_encoding, bool use_compression, bool use_static)
+{
+    // Read file
+    FILE* f = fopen(filename, "rb");
+    if (!f) return false;
+    int data_sz;
+    if (fseek(f, 0, SEEK_END) || (data_sz = (int)ftell(f)) == -1 || fseek(f, 0, SEEK_SET)) { fclose(f); return false; }
+    char* data = new char[data_sz + 4];
+    if (fread(data, 1, data_sz, f) != (size_t)data_sz) { fclose(f); delete[] data; return false; }
+    memset((void*)(((char*)data) + data_sz), 0, 4);
+    fclose(f);
+
+    // Compress
+    int maxlen = data_sz + 512 + (data_sz >> 2) + sizeof(int); // total guess
+    char* compressed = use_compression ? new char[maxlen] : data;
+    int compressed_sz = use_compression ? stb_compress((stb_uchar*)compressed, (stb_uchar*)data, data_sz) : data_sz;
+    if (use_compression)
+        memset(compressed + compressed_sz, 0, maxlen - compressed_sz);
+
+    // Output as Base85 encoded
+    FILE* out = stdout;
+    fprintf(out, "// File: '%s' (%d bytes)\n", filename, (int)data_sz);
+    const char* static_str = use_static ? "static " : "";
+    const char* compressed_str = use_compression ? "compressed_" : "";
+    if (source_encoding == SourceEncoding_Base85)
+    {
+        fprintf(out, "// Exported using binary_to_compressed_c.exe -base85 \"%s\" %s\n", filename, symbol);
+        fprintf(out, "%sconst char %s_%sdata_base85[%d+1] =\n    \"", static_str, symbol, compressed_str, (int)((compressed_sz + 3) / 4)*5);
+        char prev_c = 0;
+        for (int src_i = 0; src_i < compressed_sz; src_i += 4)
+        {
+            // This is made a little more complicated by the fact that ??X sequences are interpreted as trigraphs by old C/C++ compilers. So we need to escape pairs of ??.
+            unsigned int d = *(unsigned int*)(compressed + src_i);
+            for (unsigned int n5 = 0; n5 < 5; n5++, d /= 85)
+            {
+                char c = Encode85Byte(d);
+                fprintf(out, (c == '?' && prev_c == '?') ? "\\%c" : "%c", c);
+                prev_c = c;
+            }
+            if ((src_i % 112) == 112 - 4)
+                fprintf(out, "\"\n    \"");
+        }
+        fprintf(out, "\";\n\n");
+    }
+    else if (source_encoding == SourceEncoding_U8)
+    {
+        // As individual bytes, not subject to endianness issues.
+        fprintf(out, "// Exported using binary_to_compressed_c.exe -u8 \"%s\" %s\n", filename, symbol);
+        fprintf(out, "%sconst unsigned int %s_%ssize = %d;\n", static_str, symbol, compressed_str, (int)compressed_sz);
+        fprintf(out, "%sconst unsigned char %s_%sdata[%d] =\n{", static_str, symbol, compressed_str, (int)compressed_sz);
+        int column = 0;
+        for (int i = 0; i < compressed_sz; i++)
+        {
+            unsigned char d = *(unsigned char*)(compressed + i);
+            if (column == 0)
+                fprintf(out, "\n    ");
+            column += fprintf(out, "%d,", d);
+            if (column >= 180)
+                column = 0;
+        }
+        fprintf(out, "\n};\n\n");
+    }
+    else if (source_encoding == SourceEncoding_U32)
+    {
+        // As integers
+        fprintf(out, "// Exported using binary_to_compressed_c.exe -u32 \"%s\" %s\n", filename, symbol);
+        fprintf(out, "%sconst unsigned int %s_%ssize = %d;\n", static_str, symbol, compressed_str, (int)compressed_sz);
+        fprintf(out, "%sconst unsigned int %s_%sdata[%d/4] =\n{", static_str, symbol, compressed_str, (int)((compressed_sz + 3) / 4)*4);
+        int column = 0;
+        for (int i = 0; i < compressed_sz; i += 4)
+        {
+            unsigned int d = *(unsigned int*)(compressed + i);
+            if ((column++ % 14) == 0)
+                fprintf(out, "\n    0x%08x, ", d);
+            else
+                fprintf(out, "0x%08x, ", d);
+        }
+        fprintf(out, "\n};\n\n");
+    }
+
+    // Cleanup
+    delete[] data;
+    if (use_compression)
+        delete[] compressed;
+    return true;
+}
+
+// stb_compress* from stb.h - definition
+
+////////////////////           compressor         ///////////////////////
+
+static stb_uint stb_adler32(stb_uint adler32, stb_uchar *buffer, stb_uint buflen)
+{
+    const unsigned long ADLER_MOD = 65521;
+    unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16;
+    unsigned long blocklen, i;
+
+    blocklen = buflen % 5552;
+    while (buflen) {
+        for (i=0; i + 7 < blocklen; i += 8) {
+            s1 += buffer[0], s2 += s1;
+            s1 += buffer[1], s2 += s1;
+            s1 += buffer[2], s2 += s1;
+            s1 += buffer[3], s2 += s1;
+            s1 += buffer[4], s2 += s1;
+            s1 += buffer[5], s2 += s1;
+            s1 += buffer[6], s2 += s1;
+            s1 += buffer[7], s2 += s1;
+
+            buffer += 8;
+        }
+
+        for (; i < blocklen; ++i)
+            s1 += *buffer++, s2 += s1;
+
+        s1 %= ADLER_MOD, s2 %= ADLER_MOD;
+        buflen -= blocklen;
+        blocklen = 5552;
+    }
+    return (s2 << 16) + s1;
+}
+
+static unsigned int stb_matchlen(stb_uchar *m1, stb_uchar *m2, stb_uint maxlen)
+{
+    stb_uint i;
+    for (i=0; i < maxlen; ++i)
+        if (m1[i] != m2[i]) return i;
+    return i;
+}
+
+// simple implementation that just takes the source data in a big block
+
+static stb_uchar *stb__out;
+static FILE      *stb__outfile;
+static stb_uint   stb__outbytes;
+
+static void stb__write(unsigned char v)
+{
+    fputc(v, stb__outfile);
+    ++stb__outbytes;
+}
+
+//#define stb_out(v)    (stb__out ? *stb__out++ = (stb_uchar) (v) : stb__write((stb_uchar) (v)))
+#define stb_out(v)    do { if (stb__out) *stb__out++ = (stb_uchar) (v); else stb__write((stb_uchar) (v)); } while (0)
+
+static void stb_out2(stb_uint v) { stb_out(v >> 8); stb_out(v); }
+static void stb_out3(stb_uint v) { stb_out(v >> 16); stb_out(v >> 8); stb_out(v); }
+static void stb_out4(stb_uint v) { stb_out(v >> 24); stb_out(v >> 16); stb_out(v >> 8 ); stb_out(v); }
+
+static void outliterals(stb_uchar *in, int numlit)
+{
+    while (numlit > 65536) {
+        outliterals(in,65536);
+        in     += 65536;
+        numlit -= 65536;
+    }
+
+    if      (numlit ==     0)    ;
+    else if (numlit <=    32)    stb_out (0x000020 + numlit-1);
+    else if (numlit <=  2048)    stb_out2(0x000800 + numlit-1);
+    else /*  numlit <= 65536) */ stb_out3(0x070000 + numlit-1);
+
+    if (stb__out) {
+        memcpy(stb__out,in,numlit);
+        stb__out += numlit;
+    } else
+        fwrite(in, 1, numlit, stb__outfile);
+}
+
+static int stb__window = 0x40000; // 256K
+
+static int stb_not_crap(int best, int dist)
+{
+    return   ((best > 2  &&  dist <= 0x00100)
+        || (best > 5  &&  dist <= 0x04000)
+        || (best > 7  &&  dist <= 0x80000));
+}
+
+static  stb_uint stb__hashsize = 32768;
+
+// note that you can play with the hashing functions all you
+// want without needing to change the decompressor
+#define stb__hc(q,h,c)      (((h) << 7) + ((h) >> 25) + q[c])
+#define stb__hc2(q,h,c,d)   (((h) << 14) + ((h) >> 18) + (q[c] << 7) + q[d])
+#define stb__hc3(q,c,d,e)   ((q[c] << 14) + (q[d] << 7) + q[e])
+
+static unsigned int stb__running_adler;
+
+static int stb_compress_chunk(stb_uchar *history,
+    stb_uchar *start,
+    stb_uchar *end,
+    int length,
+    int *pending_literals,
+    stb_uchar **chash,
+    stb_uint mask)
+{
+    (void)history;
+    int window = stb__window;
+    stb_uint match_max;
+    stb_uchar *lit_start = start - *pending_literals;
+    stb_uchar *q = start;
+
+#define STB__SCRAMBLE(h)   (((h) + ((h) >> 16)) & mask)
+
+    // stop short of the end so we don't scan off the end doing
+    // the hashing; this means we won't compress the last few bytes
+    // unless they were part of something longer
+    while (q < start+length && q+12 < end) {
+        int m;
+        stb_uint h1,h2,h3,h4, h;
+        stb_uchar *t;
+        int best = 2, dist=0;
+
+        if (q+65536 > end)
+            match_max = (stb_uint)(end-q);
+        else
+            match_max = 65536;
+
+#define stb__nc(b,d)  ((d) <= window && ((b) > 9 || stb_not_crap((int)(b),(int)(d))))
+
+#define STB__TRY(t,p)  /* avoid retrying a match we already tried */ \
+    if (p ? dist != (int)(q-t) : 1)                             \
+    if ((m = stb_matchlen(t, q, match_max)) > best)     \
+    if (stb__nc(m,q-(t)))                                \
+    best = m, dist = (int)(q - (t))
+
+        // rather than search for all matches, only try 4 candidate locations,
+        // chosen based on 4 different hash functions of different lengths.
+        // this strategy is inspired by LZO; hashing is unrolled here using the
+        // 'hc' macro
+        h = stb__hc3(q,0, 1, 2); h1 = STB__SCRAMBLE(h);
+        t = chash[h1]; if (t) STB__TRY(t,0);
+        h = stb__hc2(q,h, 3, 4); h2 = STB__SCRAMBLE(h);
+        h = stb__hc2(q,h, 5, 6);        t = chash[h2]; if (t) STB__TRY(t,1);
+        h = stb__hc2(q,h, 7, 8); h3 = STB__SCRAMBLE(h);
+        h = stb__hc2(q,h, 9,10);        t = chash[h3]; if (t) STB__TRY(t,1);
+        h = stb__hc2(q,h,11,12); h4 = STB__SCRAMBLE(h);
+        t = chash[h4]; if (t) STB__TRY(t,1);
+
+        // because we use a shared hash table, can only update it
+        // _after_ we've probed all of them
+        chash[h1] = chash[h2] = chash[h3] = chash[h4] = q;
+
+        if (best > 2)
+            assert(dist > 0);
+
+        // see if our best match qualifies
+        if (best < 3) { // fast path literals
+            ++q;
+        } else if (best > 2  &&  best <= 0x80    &&  dist <= 0x100) {
+            outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best);
+            stb_out(0x80 + best-1);
+            stb_out(dist-1);
+        } else if (best > 5  &&  best <= 0x100   &&  dist <= 0x4000) {
+            outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best);
+            stb_out2(0x4000 + dist-1);
+            stb_out(best-1);
+        } else if (best > 7  &&  best <= 0x100   &&  dist <= 0x80000) {
+            outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best);
+            stb_out3(0x180000 + dist-1);
+            stb_out(best-1);
+        } else if (best > 8  &&  best <= 0x10000 &&  dist <= 0x80000) {
+            outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best);
+            stb_out3(0x100000 + dist-1);
+            stb_out2(best-1);
+        } else if (best > 9                      &&  dist <= 0x1000000) {
+            if (best > 65536) best = 65536;
+            outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best);
+            if (best <= 0x100) {
+                stb_out(0x06);
+                stb_out3(dist-1);
+                stb_out(best-1);
+            } else {
+                stb_out(0x04);
+                stb_out3(dist-1);
+                stb_out2(best-1);
+            }
+        } else {  // fallback literals if no match was a balanced tradeoff
+            ++q;
+        }
+    }
+
+    // if we didn't get all the way, add the rest to literals
+    if (q-start < length)
+        q = start+length;
+
+    // the literals are everything from lit_start to q
+    *pending_literals = (int)(q - lit_start);
+
+    stb__running_adler = stb_adler32(stb__running_adler, start, (stb_uint)(q - start));
+    return (int)(q - start);
+}
+
+static int stb_compress_inner(stb_uchar *input, stb_uint length)
+{
+    int literals = 0;
+    stb_uint len,i;
+
+    stb_uchar **chash;
+    chash = (stb_uchar**) malloc(stb__hashsize * sizeof(stb_uchar*));
+    if (chash == nullptr) return 0; // failure
+    for (i=0; i < stb__hashsize; ++i)
+        chash[i] = nullptr;
+
+    // stream signature
+    stb_out(0x57); stb_out(0xbc);
+    stb_out2(0);
+
+    stb_out4(0);       // 64-bit length requires 32-bit leading 0
+    stb_out4(length);
+    stb_out4(stb__window);
+
+    stb__running_adler = 1;
+
+    len = stb_compress_chunk(input, input, input+length, length, &literals, chash, stb__hashsize-1);
+    assert(len == length);
+
+    outliterals(input+length - literals, literals);
+
+    free(chash);
+
+    stb_out2(0x05fa); // end opcode
+
+    stb_out4(stb__running_adler);
+
+    return 1; // success
+}
+
+stb_uint stb_compress(stb_uchar *out, stb_uchar *input, stb_uint length)
+{
+    stb__out = out;
+    stb__outfile = nullptr;
+
+    stb_compress_inner(input, length);
+
+    return (stb_uint)(stb__out - out);
+}

vendor/imgui/misc/freetype/README.md

@@ -0,0 +1,54 @@
+# imgui_freetype
+
+Build font atlases using FreeType instead of stb_truetype (which is the default font rasterizer).
+<br>by @vuhdo, @mikesart, @ocornut.
+
+### Usage
+
+1. Get latest FreeType binaries or build yourself (under Windows you may use vcpkg with `vcpkg install freetype --triplet=x64-windows`, `vcpkg integrate install`).
+2. Add imgui_freetype.h/cpp alongside your project files.
+3. Add `#define IMGUI_ENABLE_FREETYPE` in your [imconfig.h](https://github.com/ocornut/imgui/blob/master/imconfig.h) file to make Dear ImGui automatically use the imgui_freetype loader. If your copy Dear ImGui is precompiled, you can always enable imgui_freetype by calling ImFontAtlas::SetFontLoader().
+
+### About Gamma Correct Blending
+
+FreeType assumes blending in linear space rather than gamma space.
+See FreeType note for [FT_Render_Glyph](https://freetype.org/freetype2/docs/reference/ft2-glyph_retrieval.html#ft_render_glyph).
+For correct results you need to be using sRGB and convert to linear space in the pixel shader output.
+The default Dear ImGui styles will be impacted by this change (alpha values will need tweaking).
+
+### Testbed for toying with settings (for developers)
+
+See https://gist.github.com/ocornut/b3a9ecf13502fd818799a452969649ad
+
+### Known issues
+
+- Oversampling settings are ignored but also not so much necessary with the higher quality rendering.
+
+### Comparison
+
+Small, thin anti-aliased fonts typically benefit a lot from FreeType's hinting:
+![comparing_font_rasterizers](https://user-images.githubusercontent.com/8225057/107550178-fef87f00-6bd0-11eb-8d09-e2edb2f0ccfc.gif)
+
+### Colorful glyphs/emojis
+
+You can use the `ImGuiFreeTypeBuilderFlags_LoadColor` flag to load certain colorful glyphs. See the
+["Using Colorful Glyphs/Emojis"](https://github.com/ocornut/imgui/blob/master/docs/FONTS.md#using-colorful-glyphsemojis) section of FONTS.md.
+
+![colored glyphs](https://user-images.githubusercontent.com/8225057/106171241-9dc4ba80-6191-11eb-8a69-ca1467b206d1.png)
+
+### Using OpenType SVG fonts (SVGinOT)
+- *SVG in Open Type* is a standard by Adobe and Mozilla for color OpenType and Open Font Format fonts. It allows font creators to embed complete SVG files within a font enabling full color and even animations.
+- Popular fonts such as [twemoji](https://github.com/13rac1/twemoji-color-font) and fonts made with [scfbuild](https://github.com/13rac1/scfbuild) is SVGinOT.
+- Two alternatives are possible to render SVG fonts: use "lunasvg" or "plutosvg". plutosvg will support some more fonts (e.g. NotoColorEmoji-Regular) and may load them faster.
+
+#### Using lunasvg
+Requires: [lunasvg](https://github.com/sammycage/lunasvg) v2.3.2 and above
+- Add `#define IMGUI_ENABLE_FREETYPE_LUNASVG` in your `imconfig.h`.
+- Get latest lunasvg binaries or build yourself. Under Windows you may use vcpkg with: `vcpkg install lunasvg --triplet=x64-windows`.
+
+#### Using plutosvg (and plutovg)
+- Add `#define IMGUI_ENABLE_FREETYPE_PLUTOSVG` in your `imconfig.h`.
+- Get latest plutosvg binaries or build yourself. Under Windows you may use vcpkg with: `vcpkg install plutosvg --triplet=x64-windows`. Alternatively, if you build imgui from vcpkg, you just need to enable the plutosvg feature: `vcpkg install imgui[plutosvg] --triplet=x64-windows`
+- If you prefer to build plutosvg manually:
+    - Compilation hints for plutovg: Compile all source files in `plutovg/source/*.c` + Add include directory: `plutovg/include` + `plutovg/stb`
+    - Compilation hints for plutosvg: Compile `plutosvg/source/plutosvg.c` + Add include directory: `plutosvg/source` + Add define: `PLUTOSVG_HAS_FREETYPE` + Link with: plutovg, freetype

vendor/imgui/misc/freetype/imgui_freetype.cpp

@@ -0,0 +1,758 @@
+// dear imgui: FreeType font builder (used as a replacement for the stb_truetype builder)
+// (code)
+
+// Get the latest version at https://github.com/ocornut/imgui/tree/master/misc/freetype
+// Original code by @vuhdo (Aleksei Skriabin) in 2017, with improvements by @mikesart.
+// Maintained since 2019 by @ocornut.
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2026/09/25: fixed handling of ExtraSizeScale.
+//  2025/06/11: refactored for the new ImFontLoader architecture, and ImGuiBackendFlags_RendererHasTextures support.
+//  2024/10/17: added plutosvg support for SVG Fonts (seems faster/better than lunasvg). Enable by using '#define IMGUI_ENABLE_FREETYPE_PLUTOSVG'. (#7927)
+//  2023/11/13: added support for ImFontConfig::RasterizationDensity field for scaling render density without scaling metrics.
+//  2023/08/01: added support for SVG fonts, enable by using '#define IMGUI_ENABLE_FREETYPE_LUNASVG'. (#6591)
+//  2023/01/04: fixed a packing issue which in some occurrences would prevent large amount of glyphs from being packed correctly.
+//  2021/08/23: fixed crash when FT_Render_Glyph() fails to render a glyph and returns nullptr.
+//  2021/03/05: added ImGuiFreeTypeBuilderFlags_Bitmap to load bitmap glyphs.
+//  2021/03/02: set 'atlas->TexPixelsUseColors = true' to help some backends with deciding of a preferred texture format.
+//  2021/01/28: added support for color-layered glyphs via ImGuiFreeTypeBuilderFlags_LoadColor (require Freetype 2.10+).
+//  2021/01/26: simplified integration by using '#define IMGUI_ENABLE_FREETYPE'. renamed ImGuiFreeType::XXX flags to ImGuiFreeTypeBuilderFlags_XXX for consistency with other API. removed ImGuiFreeType::BuildFontAtlas().
+//  2020/06/04: fix for rare case where FT_Get_Char_Index() succeed but FT_Load_Glyph() fails.
+//  2019/02/09: added RasterizerFlags::Monochrome flag to disable font anti-aliasing (combine with ::MonoHinting for best results!)
+//  2019/01/15: added support for imgui allocators + added FreeType only override function SetAllocatorFunctions().
+//  2019/01/10: re-factored to match big update in STB builder. fixed texture height waste. fixed redundant glyphs when merging. support for glyph padding.
+//  2018/06/08: added support for ImFontConfig::GlyphMinAdvanceX, GlyphMaxAdvanceX.
+//  2018/02/04: moved to main imgui repository (away from http://www.github.com/ocornut/imgui_club)
+//  2018/01/22: fix for addition of ImFontAtlas::TexUvscale member.
+//  2017/10/22: minor inconsequential change to match change in master (removed an unnecessary statement).
+//  2017/09/26: fixes for imgui internal changes.
+//  2017/08/26: cleanup, optimizations, support for ImFontConfig::RasterizerFlags, ImFontConfig::RasterizerMultiply.
+//  2017/08/16: imported from https://github.com/Vuhdo/imgui_freetype into http://www.github.com/ocornut/imgui_club, updated for latest changes in ImFontAtlas, minor tweaks.
+
+// About Gamma Correct Blending:
+// - FreeType assumes blending in linear space rather than gamma space.
+// - See https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#FT_Render_Glyph
+// - For correct results you need to be using sRGB and convert to linear space in the pixel shader output.
+// - The default dear imgui styles will be impacted by this change (alpha values will need tweaking).
+
+// FIXME: cfg.OversampleH, OversampleV are not supported, but generally not necessary with this rasterizer because Hinting makes everything look better.
+
+#include "imgui.h"
+#ifndef IMGUI_DISABLE
+#include "imgui_freetype.h"
+#include "imgui_internal.h"     // ImMin,ImMax,ImFontAtlasBuild*,
+#include <stdint.h>
+#include <ft2build.h>
+#include FT_FREETYPE_H          // <freetype/freetype.h>
+#include FT_MODULE_H            // <freetype/ftmodapi.h>
+#include FT_GLYPH_H             // <freetype/ftglyph.h>
+#include FT_SIZES_H             // <freetype/ftsizes.h>
+#include FT_SYNTHESIS_H         // <freetype/ftsynth.h>
+
+// Handle LunaSVG and PlutoSVG
+#if defined(IMGUI_ENABLE_FREETYPE_LUNASVG) && defined(IMGUI_ENABLE_FREETYPE_PLUTOSVG)
+#error "Cannot enable both IMGUI_ENABLE_FREETYPE_LUNASVG and IMGUI_ENABLE_FREETYPE_PLUTOSVG"
+#endif
+#ifdef  IMGUI_ENABLE_FREETYPE_LUNASVG
+#include FT_OTSVG_H             // <freetype/otsvg.h>
+#include FT_BBOX_H              // <freetype/ftbbox.h>
+#include <lunasvg.h>
+#endif
+#ifdef  IMGUI_ENABLE_FREETYPE_PLUTOSVG
+#include <plutosvg.h>
+#endif
+#if defined(IMGUI_ENABLE_FREETYPE_LUNASVG) || defined (IMGUI_ENABLE_FREETYPE_PLUTOSVG)
+#if !((FREETYPE_MAJOR >= 2) && (FREETYPE_MINOR >= 12))
+#error IMGUI_ENABLE_FREETYPE_PLUTOSVG or IMGUI_ENABLE_FREETYPE_LUNASVG requires FreeType version >= 2.12
+#endif
+#endif
+
+#ifdef _MSC_VER
+#pragma warning (push)
+#pragma warning (disable: 4505)     // unreferenced local function has been removed (stb stuff)
+#pragma warning (disable: 26812)    // [Static Analyzer] The enum type 'xxx' is unscoped. Prefer 'enum class' over 'enum' (Enum.3).
+#endif
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wpragmas"                  // warning: unknown option after '#pragma GCC diagnostic' kind
+#pragma GCC diagnostic ignored "-Wunused-function"          // warning: 'xxxx' defined but not used
+#ifndef __clang__
+#pragma GCC diagnostic ignored "-Wsubobject-linkage"        // warning: 'xxxx' has a field 'xxxx' whose type uses the anonymous namespace
+#endif
+#endif
+
+//-------------------------------------------------------------------------
+// Data
+//-------------------------------------------------------------------------
+
+// Default memory allocators
+static void* ImGuiFreeTypeDefaultAllocFunc(size_t size, void* user_data) { IM_UNUSED(user_data); return IM_ALLOC(size); }
+static void  ImGuiFreeTypeDefaultFreeFunc(void* ptr, void* user_data) { IM_UNUSED(user_data); IM_FREE(ptr); }
+
+// Current memory allocators
+static void* (*GImGuiFreeTypeAllocFunc)(size_t size, void* user_data) = ImGuiFreeTypeDefaultAllocFunc;
+static void  (*GImGuiFreeTypeFreeFunc)(void* ptr, void* user_data) = ImGuiFreeTypeDefaultFreeFunc;
+static void* GImGuiFreeTypeAllocatorUserData = nullptr;
+
+// Load struct
+static ImFontLoader GImGuiFreeTypeLoader;
+static char         GImGuiFreeTypeLoaderName[48] = "FreeType";
+
+// Lunasvg support
+#ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
+static FT_Error ImGuiLunasvgPortInit(FT_Pointer* state);
+static void     ImGuiLunasvgPortFree(FT_Pointer* state);
+static FT_Error ImGuiLunasvgPortRender(FT_GlyphSlot slot, FT_Pointer* _state);
+static FT_Error ImGuiLunasvgPortPresetSlot(FT_GlyphSlot slot, FT_Bool cache, FT_Pointer* _state);
+#endif
+
+//-------------------------------------------------------------------------
+// Code
+//-------------------------------------------------------------------------
+
+#define FT_CEIL(X)      (((X + 63) & -64) / 64) // From SDL_ttf: Handy routines for converting from fixed point
+#define FT_SCALEFACTOR  64.0f
+
+// Glyph metrics:
+// --------------
+//
+//                       xmin                     xmax
+//                        |                         |
+//                        |<-------- width -------->|
+//                        |                         |
+//              |         +-------------------------+----------------- ymax
+//              |         |    ggggggggg   ggggg    |     ^        ^
+//              |         |   g:::::::::ggg::::g    |     |        |
+//              |         |  g:::::::::::::::::g    |     |        |
+//              |         | g::::::ggggg::::::gg    |     |        |
+//              |         | g:::::g     g:::::g     |     |        |
+//    offsetX  -|-------->| g:::::g     g:::::g     |  offsetY     |
+//              |         | g:::::g     g:::::g     |     |        |
+//              |         | g::::::g    g:::::g     |     |        |
+//              |         | g:::::::ggggg:::::g     |     |        |
+//              |         |  g::::::::::::::::g     |     |      height
+//              |         |   gg::::::::::::::g     |     |        |
+//  baseline ---*---------|---- gggggggg::::::g-----*--------      |
+//            / |         |             g:::::g     |              |
+//     origin   |         | gggggg      g:::::g     |              |
+//              |         | g:::::gg   gg:::::g     |              |
+//              |         |  g::::::ggg:::::::g     |              |
+//              |         |   gg:::::::::::::g      |              |
+//              |         |     ggg::::::ggg        |              |
+//              |         |         gggggg          |              v
+//              |         +-------------------------+----------------- ymin
+//              |                                   |
+//              |------------- advanceX ----------->|
+
+// Stored in ImFontAtlas::FontLoaderData. ALLOCATED BY US.
+struct ImGui_ImplFreeType_Data
+{
+    FT_Library                      Library;
+    FT_MemoryRec_                   MemoryManager;
+    char                            BackendName[48];
+    ImGui_ImplFreeType_Data()       { memset((void*)this, 0, sizeof(*this)); }
+};
+
+// Stored in ImFontConfig::FontLoaderData. ALLOCATED BY US.
+struct ImGui_ImplFreeType_FontSrcData
+{
+    // Initialize from an external data buffer. Doesn't copy data, and you must ensure it stays valid up to this object lifetime.
+    bool                            InitFont(FT_Library ft_library, const ImFontConfig* src, ImGuiFreeTypeLoaderFlags extra_user_flags);
+    void                            CloseFont();
+    ImGui_ImplFreeType_FontSrcData()   { memset((void*)this, 0, sizeof(*this)); }
+    ~ImGui_ImplFreeType_FontSrcData()  { CloseFont(); }
+
+    // Members
+    FT_Face                         FtFace;
+    ImGuiFreeTypeLoaderFlags        UserFlags;          // = ImFontConfig::FontLoaderFlags
+    FT_Int32                        LoadFlags;
+    ImFontBaked*                    BakedLastActivated;
+};
+
+// Stored in ImFontBaked::FontLoaderDatas: pointer to SourcesCount instances of this. ALLOCATED BY CORE.
+struct ImGui_ImplFreeType_FontSrcBakedData
+{
+    FT_Size     FtSize;             // This represent a FT_Face with a given size.
+    ImGui_ImplFreeType_FontSrcBakedData() { memset((void*)this, 0, sizeof(*this)); }
+};
+
+bool ImGui_ImplFreeType_FontSrcData::InitFont(FT_Library ft_library, const ImFontConfig* src, ImGuiFreeTypeLoaderFlags extra_font_loader_flags)
+{
+    FT_Error error = FT_New_Memory_Face(ft_library, (const FT_Byte*)src->FontData, (FT_Long)src->FontDataSize, (FT_Long)src->FontNo, &FtFace);
+    if (error != 0)
+        return false;
+    error = FT_Select_Charmap(FtFace, FT_ENCODING_UNICODE);
+    if (error != 0)
+        return false;
+
+    // Convert to FreeType flags (NB: Bold and Oblique are processed separately)
+    UserFlags = (ImGuiFreeTypeLoaderFlags)(src->FontLoaderFlags | extra_font_loader_flags);
+
+    LoadFlags = 0;
+    if ((UserFlags & ImGuiFreeTypeLoaderFlags_Bitmap) == 0)
+        LoadFlags |= FT_LOAD_NO_BITMAP;
+    if (UserFlags & ImGuiFreeTypeLoaderFlags_NoHinting)
+        LoadFlags |= FT_LOAD_NO_HINTING;
+    if (UserFlags & ImGuiFreeTypeLoaderFlags_NoAutoHint)
+        LoadFlags |= FT_LOAD_NO_AUTOHINT;
+    if (UserFlags & ImGuiFreeTypeLoaderFlags_ForceAutoHint)
+        LoadFlags |= FT_LOAD_FORCE_AUTOHINT;
+    if (UserFlags & ImGuiFreeTypeLoaderFlags_LightHinting)
+        LoadFlags |= FT_LOAD_TARGET_LIGHT;
+    else if (UserFlags & ImGuiFreeTypeLoaderFlags_MonoHinting)
+        LoadFlags |= FT_LOAD_TARGET_MONO;
+    else
+        LoadFlags |= FT_LOAD_TARGET_NORMAL;
+
+    if (UserFlags & ImGuiFreeTypeLoaderFlags_LoadColor)
+        LoadFlags |= FT_LOAD_COLOR;
+
+    return true;
+}
+
+void ImGui_ImplFreeType_FontSrcData::CloseFont()
+{
+    if (FtFace)
+    {
+        FT_Done_Face(FtFace);
+        FtFace = nullptr;
+    }
+}
+
+static const FT_Glyph_Metrics* ImGui_ImplFreeType_LoadGlyph(ImGui_ImplFreeType_FontSrcData* src_data, uint32_t codepoint)
+{
+    uint32_t glyph_index = FT_Get_Char_Index(src_data->FtFace, codepoint);
+    if (glyph_index == 0)
+        return nullptr;
+
+    // If this crash for you: FreeType 2.11.0 has a crash bug on some bitmap/colored fonts.
+    // - https://gitlab.freedesktop.org/freetype/freetype/-/issues/1076
+    // - https://github.com/ocornut/imgui/issues/4567
+    // - https://github.com/ocornut/imgui/issues/4566
+    // You can use FreeType 2.10, or the patched version of 2.11.0 in VcPkg, or probably any upcoming FreeType version.
+    FT_Error error = FT_Load_Glyph(src_data->FtFace, glyph_index, src_data->LoadFlags);
+    if (error)
+        return nullptr;
+
+    // Need an outline for this to work
+    FT_GlyphSlot slot = src_data->FtFace->glyph;
+#if defined(IMGUI_ENABLE_FREETYPE_LUNASVG) || defined(IMGUI_ENABLE_FREETYPE_PLUTOSVG)
+    IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE || slot->format == FT_GLYPH_FORMAT_BITMAP || slot->format == FT_GLYPH_FORMAT_SVG);
+#else
+#if ((FREETYPE_MAJOR >= 2) && (FREETYPE_MINOR >= 12))
+    IM_ASSERT(slot->format != FT_GLYPH_FORMAT_SVG && "The font contains SVG glyphs, you'll need to enable IMGUI_ENABLE_FREETYPE_PLUTOSVG or IMGUI_ENABLE_FREETYPE_LUNASVG in imconfig.h and install required libraries in order to use this font");
+#endif
+    IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE || slot->format == FT_GLYPH_FORMAT_BITMAP);
+#endif // IMGUI_ENABLE_FREETYPE_LUNASVG
+
+    // Apply convenience transform (this is not picking from real "Bold"/"Italic" fonts! Merely applying FreeType helper transform. Oblique == Slanting)
+    if (src_data->UserFlags & ImGuiFreeTypeLoaderFlags_Bold)
+        FT_GlyphSlot_Embolden(slot);
+    if (src_data->UserFlags & ImGuiFreeTypeLoaderFlags_Oblique)
+    {
+        FT_GlyphSlot_Oblique(slot);
+        //FT_BBox bbox;
+        //FT_Outline_Get_BBox(&slot->outline, &bbox);
+        //slot->metrics.width = bbox.xMax - bbox.xMin;
+        //slot->metrics.height = bbox.yMax - bbox.yMin;
+    }
+
+    return &slot->metrics;
+}
+
+static void ImGui_ImplFreeType_BlitGlyph(const FT_Bitmap* ft_bitmap, uint32_t* dst, uint32_t dst_pitch)
+{
+    IM_ASSERT(ft_bitmap != nullptr);
+    const uint32_t w = ft_bitmap->width;
+    const uint32_t h = ft_bitmap->rows;
+    const uint8_t* src = ft_bitmap->buffer;
+    const uint32_t src_pitch = ft_bitmap->pitch;
+
+    switch (ft_bitmap->pixel_mode)
+    {
+    case FT_PIXEL_MODE_GRAY: // Grayscale image, 1 byte per pixel.
+        {
+            for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
+                for (uint32_t x = 0; x < w; x++)
+                    dst[x] = IM_COL32(255, 255, 255, src[x]);
+            break;
+        }
+    case FT_PIXEL_MODE_MONO: // Monochrome image, 1 bit per pixel. The bits in each byte are ordered from MSB to LSB.
+        {
+            for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
+            {
+                uint8_t bits = 0;
+                const uint8_t* bits_ptr = src;
+                for (uint32_t x = 0; x < w; x++, bits <<= 1)
+                {
+                    if ((x & 7) == 0)
+                        bits = *bits_ptr++;
+                    dst[x] = IM_COL32(255, 255, 255, (bits & 0x80) ? 255 : 0);
+                }
+            }
+            break;
+        }
+    case FT_PIXEL_MODE_BGRA:
+        {
+            // FIXME: Converting pre-multiplied alpha to straight. Doesn't smell good.
+            #define DE_MULTIPLY(color, alpha) ImMin((ImU32)(255.0f * (float)color / (float)(alpha + FLT_MIN) + 0.5f), 255u)
+            for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
+                for (uint32_t x = 0; x < w; x++)
+                {
+                    uint8_t r = src[x * 4 + 2], g = src[x * 4 + 1], b = src[x * 4], a = src[x * 4 + 3];
+                    dst[x] = IM_COL32(DE_MULTIPLY(r, a), DE_MULTIPLY(g, a), DE_MULTIPLY(b, a), a);
+                }
+            #undef DE_MULTIPLY
+            break;
+        }
+    default:
+        IM_ASSERT(0 && "FreeTypeFont::BlitGlyph(): Unknown bitmap pixel mode!");
+    }
+}
+
+// FreeType memory allocation callbacks
+static void* FreeType_Alloc(FT_Memory /*memory*/, long size)
+{
+    return GImGuiFreeTypeAllocFunc((size_t)size, GImGuiFreeTypeAllocatorUserData);
+}
+
+static void FreeType_Free(FT_Memory /*memory*/, void* block)
+{
+    GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
+}
+
+static void* FreeType_Realloc(FT_Memory /*memory*/, long cur_size, long new_size, void* block)
+{
+    // Implement realloc() as we don't ask user to provide it.
+    if (block == nullptr)
+        return GImGuiFreeTypeAllocFunc((size_t)new_size, GImGuiFreeTypeAllocatorUserData);
+
+    if (new_size == 0)
+    {
+        GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
+        return nullptr;
+    }
+
+    if (new_size > cur_size)
+    {
+        void* new_block = GImGuiFreeTypeAllocFunc((size_t)new_size, GImGuiFreeTypeAllocatorUserData);
+        memcpy(new_block, block, (size_t)cur_size);
+        GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
+        return new_block;
+    }
+
+    return block;
+}
+
+static bool ImGui_ImplFreeType_LoaderInit(ImFontAtlas* atlas)
+{
+    IM_ASSERT(atlas->FontLoaderData == nullptr);
+    ImGui_ImplFreeType_Data* bd = IM_NEW(ImGui_ImplFreeType_Data)();
+
+    // FreeType memory management: https://www.freetype.org/freetype2/docs/design/design-4.html
+    bd->MemoryManager.user = nullptr;
+    bd->MemoryManager.alloc = &FreeType_Alloc;
+    bd->MemoryManager.free = &FreeType_Free;
+    bd->MemoryManager.realloc = &FreeType_Realloc;
+
+    // https://www.freetype.org/freetype2/docs/reference/ft2-module_management.html#FT_New_Library
+    FT_Error error = FT_New_Library(&bd->MemoryManager, &bd->Library);
+    if (error != 0)
+    {
+        IM_DELETE(bd);
+        return false;
+    }
+
+    // Update ImFontLoader::Name field with linked version
+    FT_Int ver_linked_major, ver_linked_minor, ver_linked_patch;
+    FT_Library_Version(bd->Library, &ver_linked_major, &ver_linked_minor, &ver_linked_patch);
+    snprintf(GImGuiFreeTypeLoaderName, sizeof(GImGuiFreeTypeLoaderName), "FreeType (%d.%d.%d; %d.%d.%d)", FREETYPE_MAJOR, FREETYPE_MINOR, FREETYPE_PATCH, ver_linked_major, ver_linked_minor, ver_linked_patch);
+
+    // If you don't call FT_Add_Default_Modules() the rest of code may work, but FreeType won't use our custom allocator.
+    FT_Add_Default_Modules(bd->Library);
+
+#ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
+    // Install svg hooks for FreeType
+    // https://freetype.org/freetype2/docs/reference/ft2-properties.html#svg-hooks
+    // https://freetype.org/freetype2/docs/reference/ft2-svg_fonts.html#svg_fonts
+    SVG_RendererHooks hooks = { ImGuiLunasvgPortInit, ImGuiLunasvgPortFree, ImGuiLunasvgPortRender, ImGuiLunasvgPortPresetSlot };
+    FT_Property_Set(bd->Library, "ot-svg", "svg-hooks", &hooks);
+#endif // IMGUI_ENABLE_FREETYPE_LUNASVG
+#ifdef IMGUI_ENABLE_FREETYPE_PLUTOSVG
+    // With plutosvg, use provided hooks
+    FT_Property_Set(bd->Library, "ot-svg", "svg-hooks", plutosvg_ft_svg_hooks());
+#endif // IMGUI_ENABLE_FREETYPE_PLUTOSVG
+
+    // Store our data
+    atlas->FontLoaderData = (void*)bd;
+
+    return true;
+}
+
+static void ImGui_ImplFreeType_LoaderShutdown(ImFontAtlas* atlas)
+{
+    ImGui_ImplFreeType_Data* bd = (ImGui_ImplFreeType_Data*)atlas->FontLoaderData;
+    IM_ASSERT(bd != nullptr);
+    FT_Done_Library(bd->Library);
+    IM_DELETE(bd);
+    atlas->FontLoaderData = nullptr;
+}
+
+static bool ImGui_ImplFreeType_FontSrcInit(ImFontAtlas* atlas, ImFontConfig* src)
+{
+    ImGui_ImplFreeType_Data* bd = (ImGui_ImplFreeType_Data*)atlas->FontLoaderData;
+    ImGui_ImplFreeType_FontSrcData* bd_font_data = IM_NEW(ImGui_ImplFreeType_FontSrcData);
+    IM_ASSERT(src->FontLoaderData == nullptr);
+    src->FontLoaderData = bd_font_data;
+
+    if (!bd_font_data->InitFont(bd->Library, src, (ImGuiFreeTypeLoaderFlags)atlas->FontLoaderFlags))
+    {
+        IM_DELETE(bd_font_data);
+        src->FontLoaderData = nullptr;
+        return false;
+    }
+
+    return true;
+}
+
+static void ImGui_ImplFreeType_FontSrcDestroy(ImFontAtlas* atlas, ImFontConfig* src)
+{
+    IM_UNUSED(atlas);
+    ImGui_ImplFreeType_FontSrcData* bd_font_data = (ImGui_ImplFreeType_FontSrcData*)src->FontLoaderData;
+    IM_DELETE(bd_font_data);
+    src->FontLoaderData = nullptr;
+}
+
+static bool ImGui_ImplFreeType_FontBakedInit(ImFontAtlas* atlas, ImFontConfig* src, ImFontBaked* baked, void* loader_data_for_baked_src)
+{
+    IM_UNUSED(atlas);
+    float size = baked->Size;
+    const float ref_size = baked->OwnerFont->Sources[0]->SizePixels;
+    if (src->MergeMode && src->SizePixels != 0.0f)
+        size *= (src->SizePixels / ref_size);
+    size *= src->ExtraSizeScale;
+
+    ImGui_ImplFreeType_FontSrcData* bd_font_data = (ImGui_ImplFreeType_FontSrcData*)src->FontLoaderData;
+    bd_font_data->BakedLastActivated = baked;
+
+    // We use one FT_Size per (source + baked) combination.
+    ImGui_ImplFreeType_FontSrcBakedData* bd_baked_data = (ImGui_ImplFreeType_FontSrcBakedData*)loader_data_for_baked_src;
+    IM_ASSERT(bd_baked_data != nullptr);
+    IM_PLACEMENT_NEW(bd_baked_data) ImGui_ImplFreeType_FontSrcBakedData();
+
+    FT_New_Size(bd_font_data->FtFace, &bd_baked_data->FtSize);
+    FT_Activate_Size(bd_baked_data->FtSize);
+
+    // Vuhdo 2017: "I'm not sure how to deal with font sizes properly. As far as I understand, currently ImGui assumes that the 'pixel_height'
+    // is a maximum height of an any given glyph, i.e. it's the sum of font's ascender and descender. Seems strange to me.
+    // FT_Set_Pixel_Sizes() doesn't seem to get us the same result."
+    // (FT_Set_Pixel_Sizes() essentially calls FT_Request_Size() with FT_SIZE_REQUEST_TYPE_NOMINAL)
+    const float rasterizer_density = src->RasterizerDensity * baked->RasterizerDensity;
+    FT_Size_RequestRec req;
+    req.type = (bd_font_data->UserFlags & ImGuiFreeTypeLoaderFlags_Bitmap) ? FT_SIZE_REQUEST_TYPE_NOMINAL : FT_SIZE_REQUEST_TYPE_REAL_DIM;
+    req.width = 0;
+    req.height = (uint32_t)(size * 64 * rasterizer_density);
+    req.horiResolution = 0;
+    req.vertResolution = 0;
+    FT_Request_Size(bd_font_data->FtFace, &req);
+
+    // Output
+    if (src->MergeMode == false)
+    {
+        // Read metrics
+        FT_Size_Metrics metrics = bd_baked_data->FtSize->metrics;
+        const float scale = 1.0f / (rasterizer_density * src->ExtraSizeScale);
+        baked->Ascent     = ((float)metrics.ascender / FT_SCALEFACTOR) * scale;     // The pixel extents above the baseline in pixels (typically positive).
+        baked->Descent    = ((float)metrics.descender / FT_SCALEFACTOR) * scale;    // The extents below the baseline in pixels (typically negative).
+        //LineSpacing     = (float)FT_CEIL(metrics.height) * scale;         // The baseline-to-baseline distance. Note that it usually is larger than the sum of the ascender and descender taken as absolute values. There is also no guarantee that no glyphs extend above or below subsequent baselines when using this distance. Think of it as a value the designer of the font finds appropriate.
+        //LineGap         = (float)FT_CEIL(metrics.height - metrics.ascender + metrics.descender) * scale; // The spacing in pixels between one row's descent and the next row's ascent.
+        //MaxAdvanceWidth = (float)FT_CEIL(metrics.max_advance) * scale;    // This field gives the maximum horizontal cursor advance for all glyphs in the font.
+        baked->Ascent = ImRoundSigned64(baked->Ascent * rasterizer_density) / rasterizer_density;
+        baked->Descent = ImRoundSigned64(baked->Descent * rasterizer_density) / rasterizer_density;
+    }
+    return true;
+}
+
+static void ImGui_ImplFreeType_FontBakedDestroy(ImFontAtlas* atlas, ImFontConfig* src, ImFontBaked* baked, void* loader_data_for_baked_src)
+{
+    IM_UNUSED(atlas);
+    IM_UNUSED(baked);
+    IM_UNUSED(src);
+    ImGui_ImplFreeType_FontSrcBakedData* bd_baked_data = (ImGui_ImplFreeType_FontSrcBakedData*)loader_data_for_baked_src;
+    IM_ASSERT(bd_baked_data != nullptr);
+    FT_Done_Size(bd_baked_data->FtSize);
+    bd_baked_data->~ImGui_ImplFreeType_FontSrcBakedData(); // ~IM_PLACEMENT_DELETE()
+}
+
+static bool ImGui_ImplFreeType_FontBakedLoadGlyph(ImFontAtlas* atlas, ImFontConfig* src, ImFontBaked* baked, void* loader_data_for_baked_src, ImWchar codepoint, ImFontGlyph* out_glyph, float* out_advance_x)
+{
+    ImGui_ImplFreeType_FontSrcData* bd_font_data = (ImGui_ImplFreeType_FontSrcData*)src->FontLoaderData;
+    uint32_t glyph_index = FT_Get_Char_Index(bd_font_data->FtFace, codepoint);
+    if (glyph_index == 0)
+        return false;
+
+    if (bd_font_data->BakedLastActivated != baked) // <-- could use id
+    {
+        // Activate current size
+        ImGui_ImplFreeType_FontSrcBakedData* bd_baked_data = (ImGui_ImplFreeType_FontSrcBakedData*)loader_data_for_baked_src;
+        FT_Activate_Size(bd_baked_data->FtSize);
+        bd_font_data->BakedLastActivated = baked;
+    }
+
+    const FT_Glyph_Metrics* metrics = ImGui_ImplFreeType_LoadGlyph(bd_font_data, codepoint);
+    if (metrics == nullptr)
+        return false;
+
+    FT_Face face = bd_font_data->FtFace;
+    FT_GlyphSlot slot = face->glyph;
+    const float rasterizer_density = src->RasterizerDensity * baked->RasterizerDensity;
+
+    // Load metrics only mode
+    const float advance_x = (slot->advance.x / FT_SCALEFACTOR) / rasterizer_density;
+    if (out_advance_x != nullptr)
+    {
+        IM_ASSERT(out_glyph == nullptr);
+        *out_advance_x = advance_x;
+        return true;
+    }
+
+    // Render glyph into a bitmap (currently held by FreeType)
+    FT_Render_Mode render_mode = (bd_font_data->UserFlags & ImGuiFreeTypeLoaderFlags_Monochrome) ? FT_RENDER_MODE_MONO : FT_RENDER_MODE_NORMAL;
+    FT_Error error = FT_Render_Glyph(slot, render_mode);
+    const FT_Bitmap* ft_bitmap = &slot->bitmap;
+    if (error != 0 || ft_bitmap == nullptr)
+        return false;
+
+    const int w = (int)ft_bitmap->width;
+    const int h = (int)ft_bitmap->rows;
+    const bool is_visible = (w != 0 && h != 0);
+
+    // Prepare glyph
+    out_glyph->Codepoint = codepoint;
+    out_glyph->AdvanceX = advance_x;
+
+    // Pack and retrieve position inside texture atlas
+    if (is_visible)
+    {
+        ImFontAtlasRectId pack_id = ImFontAtlasPackAddRect(atlas, w, h);
+        if (pack_id == ImFontAtlasRectId_Invalid)
+        {
+            // Pathological out of memory case (TexMaxWidth/TexMaxHeight set too small?)
+            IM_ASSERT(pack_id != ImFontAtlasRectId_Invalid && "Out of texture memory.");
+            return false;
+        }
+        ImTextureRect* r = ImFontAtlasPackGetRect(atlas, pack_id);
+
+        // Render pixels to our temporary buffer
+        atlas->Builder->TempBuffer.resize(w * h * 4);
+        uint32_t* temp_buffer = (uint32_t*)atlas->Builder->TempBuffer.Data;
+        ImGui_ImplFreeType_BlitGlyph(ft_bitmap, temp_buffer, w);
+
+        const float ref_size = baked->OwnerFont->Sources[0]->SizePixels;
+        const float offsets_scale = (ref_size != 0.0f) ? (baked->Size / ref_size) : 1.0f;
+        float font_off_x = ImFloor(src->GlyphOffset.x * offsets_scale + 0.5f); // Snap scaled offset.
+        float font_off_y = ImFloor(src->GlyphOffset.y * offsets_scale + 0.5f) + baked->Ascent;
+        float recip_h = 1.0f / rasterizer_density;
+        float recip_v = 1.0f / rasterizer_density;
+
+        // Register glyph
+        float glyph_off_x = (float)face->glyph->bitmap_left;
+        float glyph_off_y = (float)-face->glyph->bitmap_top;
+        out_glyph->X0 = glyph_off_x * recip_h + font_off_x;
+        out_glyph->Y0 = glyph_off_y * recip_v + font_off_y;
+        out_glyph->X1 = (glyph_off_x + w) * recip_h + font_off_x;
+        out_glyph->Y1 = (glyph_off_y + h) * recip_v + font_off_y;
+        out_glyph->Visible = true;
+        out_glyph->Colored = (ft_bitmap->pixel_mode == FT_PIXEL_MODE_BGRA);
+        out_glyph->PackId = pack_id;
+        ImFontAtlasBakedSetFontGlyphBitmap(atlas, baked, src, out_glyph, r, (const unsigned char*)temp_buffer, ImTextureFormat_RGBA32, w * 4);
+    }
+
+    return true;
+}
+
+static bool ImGui_ImplFreetype_FontSrcContainsGlyph(ImFontAtlas* atlas, ImFontConfig* src, ImWchar codepoint)
+{
+    IM_UNUSED(atlas);
+    ImGui_ImplFreeType_FontSrcData* bd_font_data = (ImGui_ImplFreeType_FontSrcData*)src->FontLoaderData;
+    int glyph_index = FT_Get_Char_Index(bd_font_data->FtFace, codepoint);
+    return glyph_index != 0;
+}
+
+const ImFontLoader* ImGuiFreeType::GetFontLoader()
+{
+    ImFontLoader* loader = &GImGuiFreeTypeLoader;
+    loader->Name = GImGuiFreeTypeLoaderName; // Initially "FreeType" then updated during the call to ImGui_ImplFreeType_LoaderInit()
+    loader->LoaderInit = ImGui_ImplFreeType_LoaderInit;
+    loader->LoaderShutdown = ImGui_ImplFreeType_LoaderShutdown;
+    loader->FontSrcInit = ImGui_ImplFreeType_FontSrcInit;
+    loader->FontSrcDestroy = ImGui_ImplFreeType_FontSrcDestroy;
+    loader->FontSrcContainsGlyph = ImGui_ImplFreetype_FontSrcContainsGlyph;
+    loader->FontBakedInit = ImGui_ImplFreeType_FontBakedInit;
+    loader->FontBakedDestroy = ImGui_ImplFreeType_FontBakedDestroy;
+    loader->FontBakedLoadGlyph = ImGui_ImplFreeType_FontBakedLoadGlyph;
+    loader->FontBakedSrcLoaderDataSize = sizeof(ImGui_ImplFreeType_FontSrcBakedData);
+    return loader;
+}
+
+void ImGuiFreeType::SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data)
+{
+    GImGuiFreeTypeAllocFunc = alloc_func;
+    GImGuiFreeTypeFreeFunc = free_func;
+    GImGuiFreeTypeAllocatorUserData = user_data;
+}
+
+bool ImGuiFreeType::DebugEditFontLoaderFlags(unsigned int* p_font_loader_flags)
+{
+    bool edited = false;
+    edited |= ImGui::CheckboxFlags("NoHinting",    p_font_loader_flags, ImGuiFreeTypeLoaderFlags_NoHinting);
+    edited |= ImGui::CheckboxFlags("NoAutoHint",   p_font_loader_flags, ImGuiFreeTypeLoaderFlags_NoAutoHint);
+    edited |= ImGui::CheckboxFlags("ForceAutoHint",p_font_loader_flags, ImGuiFreeTypeLoaderFlags_ForceAutoHint);
+    edited |= ImGui::CheckboxFlags("LightHinting", p_font_loader_flags, ImGuiFreeTypeLoaderFlags_LightHinting);
+    edited |= ImGui::CheckboxFlags("MonoHinting",  p_font_loader_flags, ImGuiFreeTypeLoaderFlags_MonoHinting);
+    edited |= ImGui::CheckboxFlags("Bold",         p_font_loader_flags, ImGuiFreeTypeLoaderFlags_Bold);
+    edited |= ImGui::CheckboxFlags("Oblique",      p_font_loader_flags, ImGuiFreeTypeLoaderFlags_Oblique);
+    edited |= ImGui::CheckboxFlags("Monochrome",   p_font_loader_flags, ImGuiFreeTypeLoaderFlags_Monochrome);
+    edited |= ImGui::CheckboxFlags("LoadColor",    p_font_loader_flags, ImGuiFreeTypeLoaderFlags_LoadColor);
+    edited |= ImGui::CheckboxFlags("Bitmap",       p_font_loader_flags, ImGuiFreeTypeLoaderFlags_Bitmap);
+    return edited;
+}
+
+#ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
+// For more details, see https://gitlab.freedesktop.org/freetype/freetype-demos/-/blob/master/src/rsvg-port.c
+// The original code from the demo is licensed under CeCILL-C Free Software License Agreement (https://gitlab.freedesktop.org/freetype/freetype/-/blob/master/LICENSE.TXT)
+struct LunasvgPortState
+{
+    FT_Error            err = FT_Err_Ok;
+    lunasvg::Matrix     matrix;
+    std::unique_ptr<lunasvg::Document> svg = nullptr;
+};
+
+static FT_Error ImGuiLunasvgPortInit(FT_Pointer* _state)
+{
+    *_state = IM_NEW(LunasvgPortState)();
+    return FT_Err_Ok;
+}
+
+static void ImGuiLunasvgPortFree(FT_Pointer* _state)
+{
+    IM_DELETE(*(LunasvgPortState**)_state);
+}
+
+static FT_Error ImGuiLunasvgPortRender(FT_GlyphSlot slot, FT_Pointer* _state)
+{
+    LunasvgPortState* state = *(LunasvgPortState**)_state;
+
+    // If there was an error while loading the svg in ImGuiLunasvgPortPresetSlot(), the renderer hook still get called, so just returns the error.
+    if (state->err != FT_Err_Ok)
+        return state->err;
+
+    // rows is height, pitch (or stride) equals to width * sizeof(int32)
+    lunasvg::Bitmap bitmap((uint8_t*)slot->bitmap.buffer, slot->bitmap.width, slot->bitmap.rows, slot->bitmap.pitch);
+#if LUNASVG_VERSION_MAJOR >= 3
+    state->svg->render(bitmap, state->matrix); // state->matrix is already scaled and translated
+#else
+    state->svg->setMatrix(state->svg->matrix().identity()); // Reset the svg matrix to the default value
+    state->svg->render(bitmap, state->matrix);              // state->matrix is already scaled and translated
+#endif
+    state->err = FT_Err_Ok;
+    return state->err;
+}
+
+static FT_Error ImGuiLunasvgPortPresetSlot(FT_GlyphSlot slot, FT_Bool cache, FT_Pointer* _state)
+{
+    FT_SVG_Document   document = (FT_SVG_Document)slot->other;
+    LunasvgPortState* state = *(LunasvgPortState**)_state;
+    FT_Size_Metrics&  metrics = document->metrics;
+
+    // This function is called twice, once in the FT_Load_Glyph() and another right before ImGuiLunasvgPortRender().
+    // If it's the latter, don't do anything because it's // already done in the former.
+    if (cache)
+        return state->err;
+
+    state->svg = lunasvg::Document::loadFromData((const char*)document->svg_document, document->svg_document_length);
+    if (state->svg == nullptr)
+    {
+        state->err = FT_Err_Invalid_SVG_Document;
+        return state->err;
+    }
+
+#if LUNASVG_VERSION_MAJOR >= 3
+    lunasvg::Box box = state->svg->boundingBox();
+#else
+    lunasvg::Box box = state->svg->box();
+#endif
+    double scale = std::min(metrics.x_ppem / box.w, metrics.y_ppem / box.h);
+    double xx = (double)document->transform.xx / (1 << 16);
+    double xy = -(double)document->transform.xy / (1 << 16);
+    double yx = -(double)document->transform.yx / (1 << 16);
+    double yy = (double)document->transform.yy / (1 << 16);
+    double x0 = (double)document->delta.x / 64 * box.w / metrics.x_ppem;
+    double y0 = -(double)document->delta.y / 64 * box.h / metrics.y_ppem;
+
+#if LUNASVG_VERSION_MAJOR >= 3
+    // Scale, transform and pre-translate the matrix for the rendering step
+    state->matrix = lunasvg::Matrix::translated(-box.x, -box.y);
+    state->matrix.multiply(lunasvg::Matrix(xx, xy, yx, yy, x0, y0));
+    state->matrix.scale(scale, scale);
+
+    // Apply updated transformation to the bounding box
+    box.transform(state->matrix);
+#else
+    // Scale and transform, we don't translate the svg yet
+    state->matrix.identity();
+    state->matrix.scale(scale, scale);
+    state->matrix.transform(xx, xy, yx, yy, x0, y0);
+    state->svg->setMatrix(state->matrix);
+
+    // Pre-translate the matrix for the rendering step
+    state->matrix.translate(-box.x, -box.y);
+
+    // Get the box again after the transformation
+    box = state->svg->box();
+#endif
+
+    // Calculate the bitmap size
+    slot->bitmap_left = FT_Int(box.x);
+    slot->bitmap_top = FT_Int(-box.y);
+    slot->bitmap.rows = (unsigned int)(ImCeil((float)box.h));
+    slot->bitmap.width = (unsigned int)(ImCeil((float)box.w));
+    slot->bitmap.pitch = slot->bitmap.width * 4;
+    slot->bitmap.pixel_mode = FT_PIXEL_MODE_BGRA;
+
+    // Compute all the bearings and set them correctly. The outline is scaled already, we just need to use the bounding box.
+    double metrics_width = box.w;
+    double metrics_height = box.h;
+    double horiBearingX = box.x;
+    double horiBearingY = -box.y;
+    double vertBearingX = slot->metrics.horiBearingX / 64.0 - slot->metrics.horiAdvance / 64.0 / 2.0;
+    double vertBearingY = (slot->metrics.vertAdvance / 64.0 - slot->metrics.height / 64.0) / 2.0;
+    slot->metrics.width = FT_Pos(IM_ROUND(metrics_width * 64.0));   // Using IM_ROUND() assume width and height are positive
+    slot->metrics.height = FT_Pos(IM_ROUND(metrics_height * 64.0));
+    slot->metrics.horiBearingX = FT_Pos(horiBearingX * 64);
+    slot->metrics.horiBearingY = FT_Pos(horiBearingY * 64);
+    slot->metrics.vertBearingX = FT_Pos(vertBearingX * 64);
+    slot->metrics.vertBearingY = FT_Pos(vertBearingY * 64);
+
+    if (slot->metrics.vertAdvance == 0)
+        slot->metrics.vertAdvance = FT_Pos(metrics_height * 1.2 * 64.0);
+
+    state->err = FT_Err_Ok;
+    return state->err;
+}
+
+#endif // #ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
+
+//-----------------------------------------------------------------------------
+
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+
+#ifdef _MSC_VER
+#pragma warning (pop)
+#endif
+
+#endif // #ifndef IMGUI_DISABLE

vendor/imgui/misc/freetype/imgui_freetype.h

@@ -0,0 +1,83 @@
+// dear imgui: FreeType font builder (used as a replacement for the stb_truetype builder)
+// (headers)
+
+#pragma once
+#include "imgui.h"      // IMGUI_API
+#ifndef IMGUI_DISABLE
+
+// Usage:
+// - Add '#define IMGUI_ENABLE_FREETYPE' in your imconfig to automatically enable support
+//   for imgui_freetype in imgui. It is equivalent to selecting the default loader with:
+//      io.Fonts->SetFontLoader(ImGuiFreeType::GetFontLoader())
+
+// Optional support for OpenType SVG fonts:
+// - Add '#define IMGUI_ENABLE_FREETYPE_PLUTOSVG' to use plutosvg (not provided). See #7927.
+// - Add '#define IMGUI_ENABLE_FREETYPE_LUNASVG' to use lunasvg (not provided). See #6591.
+
+// Forward declarations
+struct ImFontAtlas;
+struct ImFontLoader;
+
+// Hinting greatly impacts visuals (and glyph sizes).
+// - By default, hinting is enabled and the font's native hinter is preferred over the auto-hinter.
+// - When disabled, FreeType generates blurrier glyphs, more or less matches the stb_truetype.h
+// - The Default hinting mode usually looks good, but may distort glyphs in an unusual way.
+// - The Light hinting mode generates fuzzier glyphs but better matches Microsoft's rasterizer.
+// You can set those flags globally in ImFontAtlas::FontLoaderFlags
+// You can set those flags on a per font basis in ImFontConfig::FontLoaderFlags
+typedef unsigned int ImGuiFreeTypeLoaderFlags;
+enum ImGuiFreeTypeLoaderFlags_
+{
+    ImGuiFreeTypeLoaderFlags_NoHinting     = 1 << 0,   // Disable hinting. This generally generates 'blurrier' bitmap glyphs when the glyph are rendered in any of the anti-aliased modes.
+    ImGuiFreeTypeLoaderFlags_NoAutoHint    = 1 << 1,   // Disable auto-hinter.
+    ImGuiFreeTypeLoaderFlags_ForceAutoHint = 1 << 2,   // Indicates that the auto-hinter is preferred over the font's native hinter.
+    ImGuiFreeTypeLoaderFlags_LightHinting  = 1 << 3,   // A lighter hinting algorithm for gray-level modes. Many generated glyphs are fuzzier but better resemble their original shape. This is achieved by snapping glyphs to the pixel grid only vertically (Y-axis), as is done by Microsoft's ClearType and Adobe's proprietary font renderer. This preserves inter-glyph spacing in horizontal text.
+    ImGuiFreeTypeLoaderFlags_MonoHinting   = 1 << 4,   // Strong hinting algorithm that should only be used for monochrome output.
+    ImGuiFreeTypeLoaderFlags_Bold          = 1 << 5,   // Styling: Should we artificially embolden the font?
+    ImGuiFreeTypeLoaderFlags_Oblique       = 1 << 6,   // Styling: Should we slant the font, emulating italic style?
+    ImGuiFreeTypeLoaderFlags_Monochrome    = 1 << 7,   // Disable anti-aliasing. Combine this with MonoHinting for best results!
+    ImGuiFreeTypeLoaderFlags_LoadColor     = 1 << 8,   // Enable FreeType color-layered glyphs
+    ImGuiFreeTypeLoaderFlags_Bitmap        = 1 << 9,   // Enable FreeType bitmap glyphs
+
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+    ImGuiFreeTypeBuilderFlags_NoHinting     = ImGuiFreeTypeLoaderFlags_NoHinting,
+    ImGuiFreeTypeBuilderFlags_NoAutoHint    = ImGuiFreeTypeLoaderFlags_NoAutoHint,
+    ImGuiFreeTypeBuilderFlags_ForceAutoHint = ImGuiFreeTypeLoaderFlags_ForceAutoHint,
+    ImGuiFreeTypeBuilderFlags_LightHinting  = ImGuiFreeTypeLoaderFlags_LightHinting,
+    ImGuiFreeTypeBuilderFlags_MonoHinting   = ImGuiFreeTypeLoaderFlags_MonoHinting,
+    ImGuiFreeTypeBuilderFlags_Bold          = ImGuiFreeTypeLoaderFlags_Bold,
+    ImGuiFreeTypeBuilderFlags_Oblique       = ImGuiFreeTypeLoaderFlags_Oblique,
+    ImGuiFreeTypeBuilderFlags_Monochrome    = ImGuiFreeTypeLoaderFlags_Monochrome,
+    ImGuiFreeTypeBuilderFlags_LoadColor     = ImGuiFreeTypeLoaderFlags_LoadColor,
+    ImGuiFreeTypeBuilderFlags_Bitmap        = ImGuiFreeTypeLoaderFlags_Bitmap,
+#endif
+};
+
+// Obsolete names (will be removed)
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+typedef ImGuiFreeTypeLoaderFlags_ ImGuiFreeTypeBuilderFlags_;
+#endif
+
+namespace ImGuiFreeType
+{
+    // This is automatically assigned when using '#define IMGUI_ENABLE_FREETYPE'.
+    // If you need to dynamically select between multiple builders:
+    // - you can manually assign this builder with 'atlas->SetFontLoader(ImGuiFreeType::GetFontLoader())'
+    // - prefer deep-copying this into your own ImFontLoader instance if you use hot-reloading that messes up static data.
+    IMGUI_API const ImFontLoader*       GetFontLoader();
+
+    // Override allocators. By default ImGuiFreeType will use IM_ALLOC()/IM_FREE()
+    // However, as FreeType does lots of allocations we provide a way for the user to redirect it to a separate memory heap if desired.
+    IMGUI_API void                      SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data = nullptr);
+
+    // Display UI to edit ImFontAtlas::FontLoaderFlags (shared) or ImFontConfig::FontLoaderFlags (single source)
+    IMGUI_API bool                      DebugEditFontLoaderFlags(ImGuiFreeTypeLoaderFlags* p_font_loader_flags);
+
+    // Obsolete names (will be removed)
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+    //IMGUI_API const ImFontBuilderIO* GetBuilderForFreeType(); // Renamed/changed in 1.92. Change 'io.Fonts->FontBuilderIO = ImGuiFreeType::GetBuilderForFreeType()' to 'io.Fonts->SetFontLoader(ImGuiFreeType::GetFontLoader())' if you need runtime selection.
+    //static inline bool BuildFontAtlas(ImFontAtlas* atlas, unsigned int flags = 0) { atlas->FontBuilderIO = GetBuilderForFreeType(); atlas->FontLoaderFlags = flags; return atlas->Build(); } // Prefer using '#define IMGUI_ENABLE_FREETYPE'
+#endif
+}
+
+#endif // #ifndef IMGUI_DISABLE

vendor/imgui/misc/single_file/imgui_single_file.h

@@ -0,0 +1,29 @@
+// dear imgui: single-file wrapper include
+// We use this to validate compiling all *.cpp files in a same compilation unit.
+// Users of that technique (also called "Unity builds") can generally provide this themselves easily.
+
+// Do this:
+//    #define IMGUI_IMPLEMENTATION
+//    #include "imgui_single_file.h"
+// In *one* C++ file to create the implementation.
+// Using this in your project will leak the contents of imgui_internal.h and ImVec2 operators in this compilation unit.
+
+#if defined(IMGUI_IMPLEMENTATION) && !defined(IMGUI_DEFINE_MATH_OPERATORS)
+#define IMGUI_DEFINE_MATH_OPERATORS
+#endif
+
+#include "../../imgui.h"
+#ifdef IMGUI_ENABLE_FREETYPE
+#include "../../misc/freetype/imgui_freetype.h"
+#endif
+
+#ifdef IMGUI_IMPLEMENTATION
+#include "../../imgui.cpp"
+#include "../../imgui_demo.cpp"
+#include "../../imgui_draw.cpp"
+#include "../../imgui_tables.cpp"
+#include "../../imgui_widgets.cpp"
+#ifdef IMGUI_ENABLE_FREETYPE
+#include "../../misc/freetype/imgui_freetype.cpp"
+#endif
+#endif

vendor/imgui/vendor_imgui.cpp

@@ -0,0 +1,6 @@
+// vendor_imgui.cpp
+#include "imgui.cpp"
+#include "imgui_draw.cpp"
+#include "imgui_tables.cpp"
+#include "imgui_widgets.cpp"
+#include "imgui_demo.cpp"

vendor/llvm/include/clang-c/BuildSystem.h

@@ -0,0 +1,153 @@
+/*==-- clang-c/BuildSystem.h - Utilities for use by build systems -*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header provides various utilities for use by build systems.           *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_BUILDSYSTEM_H
+#define LLVM_CLANG_C_BUILDSYSTEM_H
+
+#include "clang-c/CXErrorCode.h"
+#include "clang-c/CXString.h"
+#include "clang-c/ExternC.h"
+#include "clang-c/Platform.h"
+
+LLVM_CLANG_C_EXTERN_C_BEGIN
+
+/**
+ * \defgroup BUILD_SYSTEM Build system utilities
+ * @{
+ */
+
+/**
+ * Return the timestamp for use with Clang's
+ * \c -fbuild-session-timestamp= option.
+ */
+CINDEX_LINKAGE unsigned long long clang_getBuildSessionTimestamp(void);
+
+/**
+ * Object encapsulating information about overlaying virtual
+ * file/directories over the real file system.
+ */
+typedef struct CXVirtualFileOverlayImpl *CXVirtualFileOverlay;
+
+/**
+ * Create a \c CXVirtualFileOverlay object.
+ * Must be disposed with \c clang_VirtualFileOverlay_dispose().
+ *
+ * \param options is reserved, always pass 0.
+ */
+CINDEX_LINKAGE CXVirtualFileOverlay
+clang_VirtualFileOverlay_create(unsigned options);
+
+/**
+ * Map an absolute virtual file path to an absolute real one.
+ * The virtual path must be canonicalized (not contain "."/"..").
+ * \returns 0 for success, non-zero to indicate an error.
+ */
+CINDEX_LINKAGE enum CXErrorCode
+clang_VirtualFileOverlay_addFileMapping(CXVirtualFileOverlay,
+                                        const char *virtualPath,
+                                        const char *realPath);
+
+/**
+ * Set the case sensitivity for the \c CXVirtualFileOverlay object.
+ * The \c CXVirtualFileOverlay object is case-sensitive by default, this
+ * option can be used to override the default.
+ * \returns 0 for success, non-zero to indicate an error.
+ */
+CINDEX_LINKAGE enum CXErrorCode
+clang_VirtualFileOverlay_setCaseSensitivity(CXVirtualFileOverlay,
+                                            int caseSensitive);
+
+/**
+ * Write out the \c CXVirtualFileOverlay object to a char buffer.
+ *
+ * \param options is reserved, always pass 0.
+ * \param out_buffer_ptr pointer to receive the buffer pointer, which should be
+ * disposed using \c clang_free().
+ * \param out_buffer_size pointer to receive the buffer size.
+ * \returns 0 for success, non-zero to indicate an error.
+ */
+CINDEX_LINKAGE enum CXErrorCode
+clang_VirtualFileOverlay_writeToBuffer(CXVirtualFileOverlay, unsigned options,
+                                       char **out_buffer_ptr,
+                                       unsigned *out_buffer_size);
+
+/**
+ * free memory allocated by libclang, such as the buffer returned by
+ * \c CXVirtualFileOverlay() or \c clang_ModuleMapDescriptor_writeToBuffer().
+ *
+ * \param buffer memory pointer to free.
+ */
+CINDEX_LINKAGE void clang_free(void *buffer);
+
+/**
+ * Dispose a \c CXVirtualFileOverlay object.
+ */
+CINDEX_LINKAGE void clang_VirtualFileOverlay_dispose(CXVirtualFileOverlay);
+
+/**
+ * Object encapsulating information about a module.modulemap file.
+ */
+typedef struct CXModuleMapDescriptorImpl *CXModuleMapDescriptor;
+
+/**
+ * Create a \c CXModuleMapDescriptor object.
+ * Must be disposed with \c clang_ModuleMapDescriptor_dispose().
+ *
+ * \param options is reserved, always pass 0.
+ */
+CINDEX_LINKAGE CXModuleMapDescriptor
+clang_ModuleMapDescriptor_create(unsigned options);
+
+/**
+ * Sets the framework module name that the module.modulemap describes.
+ * \returns 0 for success, non-zero to indicate an error.
+ */
+CINDEX_LINKAGE enum CXErrorCode
+clang_ModuleMapDescriptor_setFrameworkModuleName(CXModuleMapDescriptor,
+                                                 const char *name);
+
+/**
+ * Sets the umbrella header name that the module.modulemap describes.
+ * \returns 0 for success, non-zero to indicate an error.
+ */
+CINDEX_LINKAGE enum CXErrorCode
+clang_ModuleMapDescriptor_setUmbrellaHeader(CXModuleMapDescriptor,
+                                            const char *name);
+
+/**
+ * Write out the \c CXModuleMapDescriptor object to a char buffer.
+ *
+ * \param options is reserved, always pass 0.
+ * \param out_buffer_ptr pointer to receive the buffer pointer, which should be
+ * disposed using \c clang_free().
+ * \param out_buffer_size pointer to receive the buffer size.
+ * \returns 0 for success, non-zero to indicate an error.
+ */
+CINDEX_LINKAGE enum CXErrorCode
+clang_ModuleMapDescriptor_writeToBuffer(CXModuleMapDescriptor, unsigned options,
+                                       char **out_buffer_ptr,
+                                       unsigned *out_buffer_size);
+
+/**
+ * Dispose a \c CXModuleMapDescriptor object.
+ */
+CINDEX_LINKAGE void clang_ModuleMapDescriptor_dispose(CXModuleMapDescriptor);
+
+/**
+ * @}
+ */
+
+LLVM_CLANG_C_EXTERN_C_END
+
+#endif /* CLANG_C_BUILD_SYSTEM_H */
+

vendor/llvm/include/clang-c/CXCompilationDatabase.h

@@ -0,0 +1,174 @@
+/*===-- clang-c/CXCompilationDatabase.h - Compilation database  ---*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header provides a public interface to use CompilationDatabase without *|
+|* the full Clang C++ API.                                                    *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_CXCOMPILATIONDATABASE_H
+#define LLVM_CLANG_C_CXCOMPILATIONDATABASE_H
+
+#include "clang-c/CXString.h"
+#include "clang-c/ExternC.h"
+#include "clang-c/Platform.h"
+
+LLVM_CLANG_C_EXTERN_C_BEGIN
+
+/** \defgroup COMPILATIONDB CompilationDatabase functions
+ * \ingroup CINDEX
+ *
+ * @{
+ */
+
+/**
+ * A compilation database holds all information used to compile files in a
+ * project. For each file in the database, it can be queried for the working
+ * directory or the command line used for the compiler invocation.
+ *
+ * Must be freed by \c clang_CompilationDatabase_dispose
+ */
+typedef void * CXCompilationDatabase;
+
+/**
+ * Contains the results of a search in the compilation database
+ *
+ * When searching for the compile command for a file, the compilation db can
+ * return several commands, as the file may have been compiled with
+ * different options in different places of the project. This choice of compile
+ * commands is wrapped in this opaque data structure. It must be freed by
+ * \c clang_CompileCommands_dispose.
+ */
+typedef void * CXCompileCommands;
+
+/**
+ * Represents the command line invocation to compile a specific file.
+ */
+typedef void * CXCompileCommand;
+
+/**
+ * Error codes for Compilation Database
+ */
+typedef enum  {
+  /*
+   * No error occurred
+   */
+  CXCompilationDatabase_NoError = 0,
+
+  /*
+   * Database can not be loaded
+   */
+  CXCompilationDatabase_CanNotLoadDatabase = 1
+
+} CXCompilationDatabase_Error;
+
+/**
+ * Creates a compilation database from the database found in directory
+ * buildDir. For example, CMake can output a compile_commands.json which can
+ * be used to build the database.
+ *
+ * It must be freed by \c clang_CompilationDatabase_dispose.
+ */
+CINDEX_LINKAGE CXCompilationDatabase
+clang_CompilationDatabase_fromDirectory(const char *BuildDir,
+                                        CXCompilationDatabase_Error *ErrorCode);
+
+/**
+ * Free the given compilation database
+ */
+CINDEX_LINKAGE void
+clang_CompilationDatabase_dispose(CXCompilationDatabase);
+
+/**
+ * Find the compile commands used for a file. The compile commands
+ * must be freed by \c clang_CompileCommands_dispose.
+ */
+CINDEX_LINKAGE CXCompileCommands
+clang_CompilationDatabase_getCompileCommands(CXCompilationDatabase,
+                                             const char *CompleteFileName);
+
+/**
+ * Get all the compile commands in the given compilation database.
+ */
+CINDEX_LINKAGE CXCompileCommands
+clang_CompilationDatabase_getAllCompileCommands(CXCompilationDatabase);
+
+/**
+ * Free the given CompileCommands
+ */
+CINDEX_LINKAGE void clang_CompileCommands_dispose(CXCompileCommands);
+
+/**
+ * Get the number of CompileCommand we have for a file
+ */
+CINDEX_LINKAGE unsigned
+clang_CompileCommands_getSize(CXCompileCommands);
+
+/**
+ * Get the I'th CompileCommand for a file
+ *
+ * Note : 0 <= i < clang_CompileCommands_getSize(CXCompileCommands)
+ */
+CINDEX_LINKAGE CXCompileCommand
+clang_CompileCommands_getCommand(CXCompileCommands, unsigned I);
+
+/**
+ * Get the working directory where the CompileCommand was executed from
+ */
+CINDEX_LINKAGE CXString
+clang_CompileCommand_getDirectory(CXCompileCommand);
+
+/**
+ * Get the filename associated with the CompileCommand.
+ */
+CINDEX_LINKAGE CXString
+clang_CompileCommand_getFilename(CXCompileCommand);
+
+/**
+ * Get the number of arguments in the compiler invocation.
+ *
+ */
+CINDEX_LINKAGE unsigned
+clang_CompileCommand_getNumArgs(CXCompileCommand);
+
+/**
+ * Get the I'th argument value in the compiler invocations
+ *
+ * Invariant :
+ *  - argument 0 is the compiler executable
+ */
+CINDEX_LINKAGE CXString
+clang_CompileCommand_getArg(CXCompileCommand, unsigned I);
+
+/**
+ * Get the number of source mappings for the compiler invocation.
+ */
+CINDEX_LINKAGE unsigned
+clang_CompileCommand_getNumMappedSources(CXCompileCommand);
+
+/**
+ * Get the I'th mapped source path for the compiler invocation.
+ */
+CINDEX_LINKAGE CXString
+clang_CompileCommand_getMappedSourcePath(CXCompileCommand, unsigned I);
+
+/**
+ * Get the I'th mapped source content for the compiler invocation.
+ */
+CINDEX_LINKAGE CXString
+clang_CompileCommand_getMappedSourceContent(CXCompileCommand, unsigned I);
+
+/**
+ * @}
+ */
+
+LLVM_CLANG_C_EXTERN_C_END
+
+#endif
+

vendor/llvm/include/clang-c/CXDiagnostic.h

@@ -0,0 +1,379 @@
+/*===-- clang-c/CXDiagnostic.h - C Index Diagnostics --------------*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header provides the interface to C Index diagnostics.                 *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_CXDIAGNOSTIC_H
+#define LLVM_CLANG_C_CXDIAGNOSTIC_H
+
+#include "clang-c/CXSourceLocation.h"
+#include "clang-c/CXString.h"
+#include "clang-c/ExternC.h"
+#include "clang-c/Platform.h"
+
+LLVM_CLANG_C_EXTERN_C_BEGIN
+
+/**
+ * \defgroup CINDEX_DIAG Diagnostic reporting
+ *
+ * @{
+ */
+
+/**
+ * Describes the severity of a particular diagnostic.
+ */
+enum CXDiagnosticSeverity {
+  /**
+   * A diagnostic that has been suppressed, e.g., by a command-line
+   * option.
+   */
+  CXDiagnostic_Ignored = 0,
+
+  /**
+   * This diagnostic is a note that should be attached to the
+   * previous (non-note) diagnostic.
+   */
+  CXDiagnostic_Note = 1,
+
+  /**
+   * This diagnostic indicates suspicious code that may not be
+   * wrong.
+   */
+  CXDiagnostic_Warning = 2,
+
+  /**
+   * This diagnostic indicates that the code is ill-formed.
+   */
+  CXDiagnostic_Error = 3,
+
+  /**
+   * This diagnostic indicates that the code is ill-formed such
+   * that future parser recovery is unlikely to produce useful
+   * results.
+   */
+  CXDiagnostic_Fatal = 4
+};
+
+/**
+ * A single diagnostic, containing the diagnostic's severity,
+ * location, text, source ranges, and fix-it hints.
+ */
+typedef void *CXDiagnostic;
+
+/**
+ * A group of CXDiagnostics.
+ */
+typedef void *CXDiagnosticSet;
+
+/**
+ * Determine the number of diagnostics in a CXDiagnosticSet.
+ */
+CINDEX_LINKAGE unsigned clang_getNumDiagnosticsInSet(CXDiagnosticSet Diags);
+
+/**
+ * Retrieve a diagnostic associated with the given CXDiagnosticSet.
+ *
+ * \param Diags the CXDiagnosticSet to query.
+ * \param Index the zero-based diagnostic number to retrieve.
+ *
+ * \returns the requested diagnostic. This diagnostic must be freed
+ * via a call to \c clang_disposeDiagnostic().
+ */
+CINDEX_LINKAGE CXDiagnostic clang_getDiagnosticInSet(CXDiagnosticSet Diags,
+                                                     unsigned Index);
+
+/**
+ * Describes the kind of error that occurred (if any) in a call to
+ * \c clang_loadDiagnostics.
+ */
+enum CXLoadDiag_Error {
+  /**
+   * Indicates that no error occurred.
+   */
+  CXLoadDiag_None = 0,
+
+  /**
+   * Indicates that an unknown error occurred while attempting to
+   * deserialize diagnostics.
+   */
+  CXLoadDiag_Unknown = 1,
+
+  /**
+   * Indicates that the file containing the serialized diagnostics
+   * could not be opened.
+   */
+  CXLoadDiag_CannotLoad = 2,
+
+  /**
+   * Indicates that the serialized diagnostics file is invalid or
+   * corrupt.
+   */
+  CXLoadDiag_InvalidFile = 3
+};
+
+/**
+ * Deserialize a set of diagnostics from a Clang diagnostics bitcode
+ * file.
+ *
+ * \param file The name of the file to deserialize.
+ * \param error A pointer to a enum value recording if there was a problem
+ *        deserializing the diagnostics.
+ * \param errorString A pointer to a CXString for recording the error string
+ *        if the file was not successfully loaded.
+ *
+ * \returns A loaded CXDiagnosticSet if successful, and NULL otherwise.  These
+ * diagnostics should be released using clang_disposeDiagnosticSet().
+ */
+CINDEX_LINKAGE CXDiagnosticSet clang_loadDiagnostics(
+    const char *file, enum CXLoadDiag_Error *error, CXString *errorString);
+
+/**
+ * Release a CXDiagnosticSet and all of its contained diagnostics.
+ */
+CINDEX_LINKAGE void clang_disposeDiagnosticSet(CXDiagnosticSet Diags);
+
+/**
+ * Retrieve the child diagnostics of a CXDiagnostic.
+ *
+ * This CXDiagnosticSet does not need to be released by
+ * clang_disposeDiagnosticSet.
+ */
+CINDEX_LINKAGE CXDiagnosticSet clang_getChildDiagnostics(CXDiagnostic D);
+
+/**
+ * Destroy a diagnostic.
+ */
+CINDEX_LINKAGE void clang_disposeDiagnostic(CXDiagnostic Diagnostic);
+
+/**
+ * Options to control the display of diagnostics.
+ *
+ * The values in this enum are meant to be combined to customize the
+ * behavior of \c clang_formatDiagnostic().
+ */
+enum CXDiagnosticDisplayOptions {
+  /**
+   * Display the source-location information where the
+   * diagnostic was located.
+   *
+   * When set, diagnostics will be prefixed by the file, line, and
+   * (optionally) column to which the diagnostic refers. For example,
+   *
+   * \code
+   * test.c:28: warning: extra tokens at end of #endif directive
+   * \endcode
+   *
+   * This option corresponds to the clang flag \c -fshow-source-location.
+   */
+  CXDiagnostic_DisplaySourceLocation = 0x01,
+
+  /**
+   * If displaying the source-location information of the
+   * diagnostic, also include the column number.
+   *
+   * This option corresponds to the clang flag \c -fshow-column.
+   */
+  CXDiagnostic_DisplayColumn = 0x02,
+
+  /**
+   * If displaying the source-location information of the
+   * diagnostic, also include information about source ranges in a
+   * machine-parsable format.
+   *
+   * This option corresponds to the clang flag
+   * \c -fdiagnostics-print-source-range-info.
+   */
+  CXDiagnostic_DisplaySourceRanges = 0x04,
+
+  /**
+   * Display the option name associated with this diagnostic, if any.
+   *
+   * The option name displayed (e.g., -Wconversion) will be placed in brackets
+   * after the diagnostic text. This option corresponds to the clang flag
+   * \c -fdiagnostics-show-option.
+   */
+  CXDiagnostic_DisplayOption = 0x08,
+
+  /**
+   * Display the category number associated with this diagnostic, if any.
+   *
+   * The category number is displayed within brackets after the diagnostic text.
+   * This option corresponds to the clang flag
+   * \c -fdiagnostics-show-category=id.
+   */
+  CXDiagnostic_DisplayCategoryId = 0x10,
+
+  /**
+   * Display the category name associated with this diagnostic, if any.
+   *
+   * The category name is displayed within brackets after the diagnostic text.
+   * This option corresponds to the clang flag
+   * \c -fdiagnostics-show-category=name.
+   */
+  CXDiagnostic_DisplayCategoryName = 0x20
+};
+
+/**
+ * Format the given diagnostic in a manner that is suitable for display.
+ *
+ * This routine will format the given diagnostic to a string, rendering
+ * the diagnostic according to the various options given. The
+ * \c clang_defaultDiagnosticDisplayOptions() function returns the set of
+ * options that most closely mimics the behavior of the clang compiler.
+ *
+ * \param Diagnostic The diagnostic to print.
+ *
+ * \param Options A set of options that control the diagnostic display,
+ * created by combining \c CXDiagnosticDisplayOptions values.
+ *
+ * \returns A new string containing for formatted diagnostic.
+ */
+CINDEX_LINKAGE CXString clang_formatDiagnostic(CXDiagnostic Diagnostic,
+                                               unsigned Options);
+
+/**
+ * Retrieve the set of display options most similar to the
+ * default behavior of the clang compiler.
+ *
+ * \returns A set of display options suitable for use with \c
+ * clang_formatDiagnostic().
+ */
+CINDEX_LINKAGE unsigned clang_defaultDiagnosticDisplayOptions(void);
+
+/**
+ * Determine the severity of the given diagnostic.
+ */
+CINDEX_LINKAGE enum CXDiagnosticSeverity
+    clang_getDiagnosticSeverity(CXDiagnostic);
+
+/**
+ * Retrieve the source location of the given diagnostic.
+ *
+ * This location is where Clang would print the caret ('^') when
+ * displaying the diagnostic on the command line.
+ */
+CINDEX_LINKAGE CXSourceLocation clang_getDiagnosticLocation(CXDiagnostic);
+
+/**
+ * Retrieve the text of the given diagnostic.
+ */
+CINDEX_LINKAGE CXString clang_getDiagnosticSpelling(CXDiagnostic);
+
+/**
+ * Retrieve the name of the command-line option that enabled this
+ * diagnostic.
+ *
+ * \param Diag The diagnostic to be queried.
+ *
+ * \param Disable If non-NULL, will be set to the option that disables this
+ * diagnostic (if any).
+ *
+ * \returns A string that contains the command-line option used to enable this
+ * warning, such as "-Wconversion" or "-pedantic".
+ */
+CINDEX_LINKAGE CXString clang_getDiagnosticOption(CXDiagnostic Diag,
+                                                  CXString *Disable);
+
+/**
+ * Retrieve the category number for this diagnostic.
+ *
+ * Diagnostics can be categorized into groups along with other, related
+ * diagnostics (e.g., diagnostics under the same warning flag). This routine
+ * retrieves the category number for the given diagnostic.
+ *
+ * \returns The number of the category that contains this diagnostic, or zero
+ * if this diagnostic is uncategorized.
+ */
+CINDEX_LINKAGE unsigned clang_getDiagnosticCategory(CXDiagnostic);
+
+/**
+ * Retrieve the name of a particular diagnostic category.  This
+ *  is now deprecated.  Use clang_getDiagnosticCategoryText()
+ *  instead.
+ *
+ * \param Category A diagnostic category number, as returned by
+ * \c clang_getDiagnosticCategory().
+ *
+ * \returns The name of the given diagnostic category.
+ */
+CINDEX_DEPRECATED CINDEX_LINKAGE CXString
+clang_getDiagnosticCategoryName(unsigned Category);
+
+/**
+ * Retrieve the diagnostic category text for a given diagnostic.
+ *
+ * \returns The text of the given diagnostic category.
+ */
+CINDEX_LINKAGE CXString clang_getDiagnosticCategoryText(CXDiagnostic);
+
+/**
+ * Determine the number of source ranges associated with the given
+ * diagnostic.
+ */
+CINDEX_LINKAGE unsigned clang_getDiagnosticNumRanges(CXDiagnostic);
+
+/**
+ * Retrieve a source range associated with the diagnostic.
+ *
+ * A diagnostic's source ranges highlight important elements in the source
+ * code. On the command line, Clang displays source ranges by
+ * underlining them with '~' characters.
+ *
+ * \param Diagnostic the diagnostic whose range is being extracted.
+ *
+ * \param Range the zero-based index specifying which range to
+ *
+ * \returns the requested source range.
+ */
+CINDEX_LINKAGE CXSourceRange clang_getDiagnosticRange(CXDiagnostic Diagnostic,
+                                                      unsigned Range);
+
+/**
+ * Determine the number of fix-it hints associated with the
+ * given diagnostic.
+ */
+CINDEX_LINKAGE unsigned clang_getDiagnosticNumFixIts(CXDiagnostic Diagnostic);
+
+/**
+ * Retrieve the replacement information for a given fix-it.
+ *
+ * Fix-its are described in terms of a source range whose contents
+ * should be replaced by a string. This approach generalizes over
+ * three kinds of operations: removal of source code (the range covers
+ * the code to be removed and the replacement string is empty),
+ * replacement of source code (the range covers the code to be
+ * replaced and the replacement string provides the new code), and
+ * insertion (both the start and end of the range point at the
+ * insertion location, and the replacement string provides the text to
+ * insert).
+ *
+ * \param Diagnostic The diagnostic whose fix-its are being queried.
+ *
+ * \param FixIt The zero-based index of the fix-it.
+ *
+ * \param ReplacementRange The source range whose contents will be
+ * replaced with the returned replacement string. Note that source
+ * ranges are half-open ranges [a, b), so the source code should be
+ * replaced from a and up to (but not including) b.
+ *
+ * \returns A string containing text that should be replace the source
+ * code indicated by the \c ReplacementRange.
+ */
+CINDEX_LINKAGE CXString clang_getDiagnosticFixIt(
+    CXDiagnostic Diagnostic, unsigned FixIt, CXSourceRange *ReplacementRange);
+
+/**
+ * @}
+ */
+
+LLVM_CLANG_C_EXTERN_C_END
+
+#endif

vendor/llvm/include/clang-c/CXErrorCode.h

@@ -0,0 +1,62 @@
+/*===-- clang-c/CXErrorCode.h - C Index Error Codes  --------------*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header provides the CXErrorCode enumerators.                          *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_CXERRORCODE_H
+#define LLVM_CLANG_C_CXERRORCODE_H
+
+#include "clang-c/ExternC.h"
+#include "clang-c/Platform.h"
+
+LLVM_CLANG_C_EXTERN_C_BEGIN
+
+/**
+ * Error codes returned by libclang routines.
+ *
+ * Zero (\c CXError_Success) is the only error code indicating success.  Other
+ * error codes, including not yet assigned non-zero values, indicate errors.
+ */
+enum CXErrorCode {
+  /**
+   * No error.
+   */
+  CXError_Success = 0,
+
+  /**
+   * A generic error code, no further details are available.
+   *
+   * Errors of this kind can get their own specific error codes in future
+   * libclang versions.
+   */
+  CXError_Failure = 1,
+
+  /**
+   * libclang crashed while performing the requested operation.
+   */
+  CXError_Crashed = 2,
+
+  /**
+   * The function detected that the arguments violate the function
+   * contract.
+   */
+  CXError_InvalidArguments = 3,
+
+  /**
+   * An AST deserialization error has occurred.
+   */
+  CXError_ASTReadError = 4
+};
+
+LLVM_CLANG_C_EXTERN_C_END
+
+#endif
+

vendor/llvm/include/clang-c/CXFile.h

@@ -0,0 +1,83 @@
+/*===-- clang-c/CXFile.h - C Index File ---------------------------*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header provides the interface to C Index files.                       *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_CXFILE_H
+#define LLVM_CLANG_C_CXFILE_H
+
+#include <time.h>
+
+#include "clang-c/CXString.h"
+#include "clang-c/ExternC.h"
+#include "clang-c/Platform.h"
+
+LLVM_CLANG_C_EXTERN_C_BEGIN
+
+/**
+ * \defgroup CINDEX_FILES File manipulation routines
+ *
+ * @{
+ */
+
+/**
+ * A particular source file that is part of a translation unit.
+ */
+typedef void *CXFile;
+
+/**
+ * Retrieve the complete file and path name of the given file.
+ */
+CINDEX_LINKAGE CXString clang_getFileName(CXFile SFile);
+
+/**
+ * Retrieve the last modification time of the given file.
+ */
+CINDEX_LINKAGE time_t clang_getFileTime(CXFile SFile);
+
+/**
+ * Uniquely identifies a CXFile, that refers to the same underlying file,
+ * across an indexing session.
+ */
+typedef struct {
+  unsigned long long data[3];
+} CXFileUniqueID;
+
+/**
+ * Retrieve the unique ID for the given \c file.
+ *
+ * \param file the file to get the ID for.
+ * \param outID stores the returned CXFileUniqueID.
+ * \returns If there was a failure getting the unique ID, returns non-zero,
+ * otherwise returns 0.
+ */
+CINDEX_LINKAGE int clang_getFileUniqueID(CXFile file, CXFileUniqueID *outID);
+
+/**
+ * Returns non-zero if the \c file1 and \c file2 point to the same file,
+ * or they are both NULL.
+ */
+CINDEX_LINKAGE int clang_File_isEqual(CXFile file1, CXFile file2);
+
+/**
+ * Returns the real path name of \c file.
+ *
+ * An empty string may be returned. Use \c clang_getFileName() in that case.
+ */
+CINDEX_LINKAGE CXString clang_File_tryGetRealPathName(CXFile file);
+
+/**
+ * @}
+ */
+
+LLVM_CLANG_C_EXTERN_C_END
+
+#endif

vendor/llvm/include/clang-c/CXSourceLocation.h

@@ -0,0 +1,286 @@
+/*===-- clang-c/CXSourceLocation.h - C Index Source Location ------*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header provides the interface to C Index source locations.            *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_CXSOURCE_LOCATION_H
+#define LLVM_CLANG_C_CXSOURCE_LOCATION_H
+
+#include "clang-c/CXFile.h"
+#include "clang-c/CXString.h"
+#include "clang-c/ExternC.h"
+#include "clang-c/Platform.h"
+
+LLVM_CLANG_C_EXTERN_C_BEGIN
+
+/**
+ * \defgroup CINDEX_LOCATIONS Physical source locations
+ *
+ * Clang represents physical source locations in its abstract syntax tree in
+ * great detail, with file, line, and column information for the majority of
+ * the tokens parsed in the source code. These data types and functions are
+ * used to represent source location information, either for a particular
+ * point in the program or for a range of points in the program, and extract
+ * specific location information from those data types.
+ *
+ * @{
+ */
+
+/**
+ * Identifies a specific source location within a translation
+ * unit.
+ *
+ * Use clang_getExpansionLocation() or clang_getSpellingLocation()
+ * to map a source location to a particular file, line, and column.
+ */
+typedef struct {
+  const void *ptr_data[2];
+  unsigned int_data;
+} CXSourceLocation;
+
+/**
+ * Identifies a half-open character range in the source code.
+ *
+ * Use clang_getRangeStart() and clang_getRangeEnd() to retrieve the
+ * starting and end locations from a source range, respectively.
+ */
+typedef struct {
+  const void *ptr_data[2];
+  unsigned begin_int_data;
+  unsigned end_int_data;
+} CXSourceRange;
+
+/**
+ * Retrieve a NULL (invalid) source location.
+ */
+CINDEX_LINKAGE CXSourceLocation clang_getNullLocation(void);
+
+/**
+ * Determine whether two source locations, which must refer into
+ * the same translation unit, refer to exactly the same point in the source
+ * code.
+ *
+ * \returns non-zero if the source locations refer to the same location, zero
+ * if they refer to different locations.
+ */
+CINDEX_LINKAGE unsigned clang_equalLocations(CXSourceLocation loc1,
+                                             CXSourceLocation loc2);
+
+/**
+ * Returns non-zero if the given source location is in a system header.
+ */
+CINDEX_LINKAGE int clang_Location_isInSystemHeader(CXSourceLocation location);
+
+/**
+ * Returns non-zero if the given source location is in the main file of
+ * the corresponding translation unit.
+ */
+CINDEX_LINKAGE int clang_Location_isFromMainFile(CXSourceLocation location);
+
+/**
+ * Retrieve a NULL (invalid) source range.
+ */
+CINDEX_LINKAGE CXSourceRange clang_getNullRange(void);
+
+/**
+ * Retrieve a source range given the beginning and ending source
+ * locations.
+ */
+CINDEX_LINKAGE CXSourceRange clang_getRange(CXSourceLocation begin,
+                                            CXSourceLocation end);
+
+/**
+ * Determine whether two ranges are equivalent.
+ *
+ * \returns non-zero if the ranges are the same, zero if they differ.
+ */
+CINDEX_LINKAGE unsigned clang_equalRanges(CXSourceRange range1,
+                                          CXSourceRange range2);
+
+/**
+ * Returns non-zero if \p range is null.
+ */
+CINDEX_LINKAGE int clang_Range_isNull(CXSourceRange range);
+
+/**
+ * Retrieve the file, line, column, and offset represented by
+ * the given source location.
+ *
+ * If the location refers into a macro expansion, retrieves the
+ * location of the macro expansion.
+ *
+ * \param location the location within a source file that will be decomposed
+ * into its parts.
+ *
+ * \param file [out] if non-NULL, will be set to the file to which the given
+ * source location points.
+ *
+ * \param line [out] if non-NULL, will be set to the line to which the given
+ * source location points.
+ *
+ * \param column [out] if non-NULL, will be set to the column to which the given
+ * source location points.
+ *
+ * \param offset [out] if non-NULL, will be set to the offset into the
+ * buffer to which the given source location points.
+ */
+CINDEX_LINKAGE void clang_getExpansionLocation(CXSourceLocation location,
+                                               CXFile *file, unsigned *line,
+                                               unsigned *column,
+                                               unsigned *offset);
+
+/**
+ * Retrieve the file, line and column represented by the given source
+ * location, as specified in a # line directive.
+ *
+ * Example: given the following source code in a file somefile.c
+ *
+ * \code
+ * #123 "dummy.c" 1
+ *
+ * static int func(void)
+ * {
+ *     return 0;
+ * }
+ * \endcode
+ *
+ * the location information returned by this function would be
+ *
+ * File: dummy.c Line: 124 Column: 12
+ *
+ * whereas clang_getExpansionLocation would have returned
+ *
+ * File: somefile.c Line: 3 Column: 12
+ *
+ * \param location the location within a source file that will be decomposed
+ * into its parts.
+ *
+ * \param filename [out] if non-NULL, will be set to the filename of the
+ * source location. Note that filenames returned will be for "virtual" files,
+ * which don't necessarily exist on the machine running clang - e.g. when
+ * parsing preprocessed output obtained from a different environment. If
+ * a non-NULL value is passed in, remember to dispose of the returned value
+ * using \c clang_disposeString() once you've finished with it. For an invalid
+ * source location, an empty string is returned.
+ *
+ * \param line [out] if non-NULL, will be set to the line number of the
+ * source location. For an invalid source location, zero is returned.
+ *
+ * \param column [out] if non-NULL, will be set to the column number of the
+ * source location. For an invalid source location, zero is returned.
+ */
+CINDEX_LINKAGE void clang_getPresumedLocation(CXSourceLocation location,
+                                              CXString *filename,
+                                              unsigned *line, unsigned *column);
+
+/**
+ * Legacy API to retrieve the file, line, column, and offset represented
+ * by the given source location.
+ *
+ * This interface has been replaced by the newer interface
+ * #clang_getExpansionLocation(). See that interface's documentation for
+ * details.
+ */
+CINDEX_LINKAGE void clang_getInstantiationLocation(CXSourceLocation location,
+                                                   CXFile *file, unsigned *line,
+                                                   unsigned *column,
+                                                   unsigned *offset);
+
+/**
+ * Retrieve the file, line, column, and offset represented by
+ * the given source location.
+ *
+ * If the location refers into a macro instantiation, return where the
+ * location was originally spelled in the source file.
+ *
+ * \param location the location within a source file that will be decomposed
+ * into its parts.
+ *
+ * \param file [out] if non-NULL, will be set to the file to which the given
+ * source location points.
+ *
+ * \param line [out] if non-NULL, will be set to the line to which the given
+ * source location points.
+ *
+ * \param column [out] if non-NULL, will be set to the column to which the given
+ * source location points.
+ *
+ * \param offset [out] if non-NULL, will be set to the offset into the
+ * buffer to which the given source location points.
+ */
+CINDEX_LINKAGE void clang_getSpellingLocation(CXSourceLocation location,
+                                              CXFile *file, unsigned *line,
+                                              unsigned *column,
+                                              unsigned *offset);
+
+/**
+ * Retrieve the file, line, column, and offset represented by
+ * the given source location.
+ *
+ * If the location refers into a macro expansion, return where the macro was
+ * expanded or where the macro argument was written, if the location points at
+ * a macro argument.
+ *
+ * \param location the location within a source file that will be decomposed
+ * into its parts.
+ *
+ * \param file [out] if non-NULL, will be set to the file to which the given
+ * source location points.
+ *
+ * \param line [out] if non-NULL, will be set to the line to which the given
+ * source location points.
+ *
+ * \param column [out] if non-NULL, will be set to the column to which the given
+ * source location points.
+ *
+ * \param offset [out] if non-NULL, will be set to the offset into the
+ * buffer to which the given source location points.
+ */
+CINDEX_LINKAGE void clang_getFileLocation(CXSourceLocation location,
+                                          CXFile *file, unsigned *line,
+                                          unsigned *column, unsigned *offset);
+
+/**
+ * Retrieve a source location representing the first character within a
+ * source range.
+ */
+CINDEX_LINKAGE CXSourceLocation clang_getRangeStart(CXSourceRange range);
+
+/**
+ * Retrieve a source location representing the last character within a
+ * source range.
+ */
+CINDEX_LINKAGE CXSourceLocation clang_getRangeEnd(CXSourceRange range);
+
+/**
+ * Identifies an array of ranges.
+ */
+typedef struct {
+  /** The number of ranges in the \c ranges array. */
+  unsigned count;
+  /**
+   * An array of \c CXSourceRanges.
+   */
+  CXSourceRange *ranges;
+} CXSourceRangeList;
+
+/**
+ * Destroy the given \c CXSourceRangeList.
+ */
+CINDEX_LINKAGE void clang_disposeSourceRangeList(CXSourceRangeList *ranges);
+
+/**
+ * @}
+ */
+
+LLVM_CLANG_C_EXTERN_C_END
+
+#endif

vendor/llvm/include/clang-c/CXString.h

@@ -0,0 +1,69 @@
+/*===-- clang-c/CXString.h - C Index strings  --------------------*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header provides the interface to C Index strings.                     *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_CXSTRING_H
+#define LLVM_CLANG_C_CXSTRING_H
+
+#include "clang-c/ExternC.h"
+#include "clang-c/Platform.h"
+
+LLVM_CLANG_C_EXTERN_C_BEGIN
+
+/**
+ * \defgroup CINDEX_STRING String manipulation routines
+ * \ingroup CINDEX
+ *
+ * @{
+ */
+
+/**
+ * A character string.
+ *
+ * The \c CXString type is used to return strings from the interface when
+ * the ownership of that string might differ from one call to the next.
+ * Use \c clang_getCString() to retrieve the string data and, once finished
+ * with the string data, call \c clang_disposeString() to free the string.
+ */
+typedef struct {
+  const void *data;
+  unsigned private_flags;
+} CXString;
+
+typedef struct {
+  CXString *Strings;
+  unsigned Count;
+} CXStringSet;
+
+/**
+ * Retrieve the character data associated with the given string.
+ */
+CINDEX_LINKAGE const char *clang_getCString(CXString string);
+
+/**
+ * Free the given string.
+ */
+CINDEX_LINKAGE void clang_disposeString(CXString string);
+
+/**
+ * Free the given string set.
+ */
+CINDEX_LINKAGE void clang_disposeStringSet(CXStringSet *set);
+
+/**
+ * @}
+ */
+
+LLVM_CLANG_C_EXTERN_C_END
+
+#endif
+

vendor/llvm/include/clang-c/Documentation.h

@@ -0,0 +1,619 @@
+/*==-- clang-c/Documentation.h - Utilities for comment processing -*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header provides a supplementary interface for inspecting              *|
+|* documentation comments.                                                    *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_DOCUMENTATION_H
+#define LLVM_CLANG_C_DOCUMENTATION_H
+
+#include "clang-c/CXErrorCode.h"
+#include "clang-c/ExternC.h"
+#include "clang-c/Index.h"
+
+LLVM_CLANG_C_EXTERN_C_BEGIN
+
+/**
+ * \defgroup CINDEX_COMMENT Comment introspection
+ *
+ * The routines in this group provide access to information in documentation
+ * comments. These facilities are distinct from the core and may be subject to
+ * their own schedule of stability and deprecation.
+ *
+ * @{
+ */
+
+/**
+ * A parsed comment.
+ */
+typedef struct {
+  const void *ASTNode;
+  CXTranslationUnit TranslationUnit;
+} CXComment;
+
+/**
+ * Given a cursor that represents a documentable entity (e.g.,
+ * declaration), return the associated parsed comment as a
+ * \c CXComment_FullComment AST node.
+ */
+CINDEX_LINKAGE CXComment clang_Cursor_getParsedComment(CXCursor C);
+
+/**
+ * Describes the type of the comment AST node (\c CXComment).  A comment
+ * node can be considered block content (e. g., paragraph), inline content
+ * (plain text) or neither (the root AST node).
+ */
+enum CXCommentKind {
+  /**
+   * Null comment.  No AST node is constructed at the requested location
+   * because there is no text or a syntax error.
+   */
+  CXComment_Null = 0,
+
+  /**
+   * Plain text.  Inline content.
+   */
+  CXComment_Text = 1,
+
+  /**
+   * A command with word-like arguments that is considered inline content.
+   *
+   * For example: \\c command.
+   */
+  CXComment_InlineCommand = 2,
+
+  /**
+   * HTML start tag with attributes (name-value pairs).  Considered
+   * inline content.
+   *
+   * For example:
+   * \verbatim
+   * <br> <br /> <a href="http://example.org/">
+   * \endverbatim
+   */
+  CXComment_HTMLStartTag = 3,
+
+  /**
+   * HTML end tag.  Considered inline content.
+   *
+   * For example:
+   * \verbatim
+   * </a>
+   * \endverbatim
+   */
+  CXComment_HTMLEndTag = 4,
+
+  /**
+   * A paragraph, contains inline comment.  The paragraph itself is
+   * block content.
+   */
+  CXComment_Paragraph = 5,
+
+  /**
+   * A command that has zero or more word-like arguments (number of
+   * word-like arguments depends on command name) and a paragraph as an
+   * argument.  Block command is block content.
+   *
+   * Paragraph argument is also a child of the block command.
+   *
+   * For example: \has 0 word-like arguments and a paragraph argument.
+   *
+   * AST nodes of special kinds that parser knows about (e. g., \\param
+   * command) have their own node kinds.
+   */
+  CXComment_BlockCommand = 6,
+
+  /**
+   * A \\param or \\arg command that describes the function parameter
+   * (name, passing direction, description).
+   *
+   * For example: \\param [in] ParamName description.
+   */
+  CXComment_ParamCommand = 7,
+
+  /**
+   * A \\tparam command that describes a template parameter (name and
+   * description).
+   *
+   * For example: \\tparam T description.
+   */
+  CXComment_TParamCommand = 8,
+
+  /**
+   * A verbatim block command (e. g., preformatted code).  Verbatim
+   * block has an opening and a closing command and contains multiple lines of
+   * text (\c CXComment_VerbatimBlockLine child nodes).
+   *
+   * For example:
+   * \\verbatim
+   * aaa
+   * \\endverbatim
+   */
+  CXComment_VerbatimBlockCommand = 9,
+
+  /**
+   * A line of text that is contained within a
+   * CXComment_VerbatimBlockCommand node.
+   */
+  CXComment_VerbatimBlockLine = 10,
+
+  /**
+   * A verbatim line command.  Verbatim line has an opening command,
+   * a single line of text (up to the newline after the opening command) and
+   * has no closing command.
+   */
+  CXComment_VerbatimLine = 11,
+
+  /**
+   * A full comment attached to a declaration, contains block content.
+   */
+  CXComment_FullComment = 12
+};
+
+/**
+ * The most appropriate rendering mode for an inline command, chosen on
+ * command semantics in Doxygen.
+ */
+enum CXCommentInlineCommandRenderKind {
+  /**
+   * Command argument should be rendered in a normal font.
+   */
+  CXCommentInlineCommandRenderKind_Normal,
+
+  /**
+   * Command argument should be rendered in a bold font.
+   */
+  CXCommentInlineCommandRenderKind_Bold,
+
+  /**
+   * Command argument should be rendered in a monospaced font.
+   */
+  CXCommentInlineCommandRenderKind_Monospaced,
+
+  /**
+   * Command argument should be rendered emphasized (typically italic
+   * font).
+   */
+  CXCommentInlineCommandRenderKind_Emphasized,
+
+  /**
+   * Command argument should not be rendered (since it only defines an anchor).
+   */
+  CXCommentInlineCommandRenderKind_Anchor
+};
+
+/**
+ * Describes parameter passing direction for \\param or \\arg command.
+ */
+enum CXCommentParamPassDirection {
+  /**
+   * The parameter is an input parameter.
+   */
+  CXCommentParamPassDirection_In,
+
+  /**
+   * The parameter is an output parameter.
+   */
+  CXCommentParamPassDirection_Out,
+
+  /**
+   * The parameter is an input and output parameter.
+   */
+  CXCommentParamPassDirection_InOut
+};
+
+/**
+ * \param Comment AST node of any kind.
+ *
+ * \returns the type of the AST node.
+ */
+CINDEX_LINKAGE enum CXCommentKind clang_Comment_getKind(CXComment Comment);
+
+/**
+ * \param Comment AST node of any kind.
+ *
+ * \returns number of children of the AST node.
+ */
+CINDEX_LINKAGE unsigned clang_Comment_getNumChildren(CXComment Comment);
+
+/**
+ * \param Comment AST node of any kind.
+ *
+ * \param ChildIdx child index (zero-based).
+ *
+ * \returns the specified child of the AST node.
+ */
+CINDEX_LINKAGE
+CXComment clang_Comment_getChild(CXComment Comment, unsigned ChildIdx);
+
+/**
+ * A \c CXComment_Paragraph node is considered whitespace if it contains
+ * only \c CXComment_Text nodes that are empty or whitespace.
+ *
+ * Other AST nodes (except \c CXComment_Paragraph and \c CXComment_Text) are
+ * never considered whitespace.
+ *
+ * \returns non-zero if \c Comment is whitespace.
+ */
+CINDEX_LINKAGE unsigned clang_Comment_isWhitespace(CXComment Comment);
+
+/**
+ * \returns non-zero if \c Comment is inline content and has a newline
+ * immediately following it in the comment text.  Newlines between paragraphs
+ * do not count.
+ */
+CINDEX_LINKAGE
+unsigned clang_InlineContentComment_hasTrailingNewline(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_Text AST node.
+ *
+ * \returns text contained in the AST node.
+ */
+CINDEX_LINKAGE CXString clang_TextComment_getText(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_InlineCommand AST node.
+ *
+ * \returns name of the inline command.
+ */
+CINDEX_LINKAGE
+CXString clang_InlineCommandComment_getCommandName(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_InlineCommand AST node.
+ *
+ * \returns the most appropriate rendering mode, chosen on command
+ * semantics in Doxygen.
+ */
+CINDEX_LINKAGE enum CXCommentInlineCommandRenderKind
+clang_InlineCommandComment_getRenderKind(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_InlineCommand AST node.
+ *
+ * \returns number of command arguments.
+ */
+CINDEX_LINKAGE
+unsigned clang_InlineCommandComment_getNumArgs(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_InlineCommand AST node.
+ *
+ * \param ArgIdx argument index (zero-based).
+ *
+ * \returns text of the specified argument.
+ */
+CINDEX_LINKAGE
+CXString clang_InlineCommandComment_getArgText(CXComment Comment,
+                                               unsigned ArgIdx);
+
+/**
+ * \param Comment a \c CXComment_HTMLStartTag or \c CXComment_HTMLEndTag AST
+ * node.
+ *
+ * \returns HTML tag name.
+ */
+CINDEX_LINKAGE CXString clang_HTMLTagComment_getTagName(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_HTMLStartTag AST node.
+ *
+ * \returns non-zero if tag is self-closing (for example, &lt;br /&gt;).
+ */
+CINDEX_LINKAGE
+unsigned clang_HTMLStartTagComment_isSelfClosing(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_HTMLStartTag AST node.
+ *
+ * \returns number of attributes (name-value pairs) attached to the start tag.
+ */
+CINDEX_LINKAGE unsigned clang_HTMLStartTag_getNumAttrs(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_HTMLStartTag AST node.
+ *
+ * \param AttrIdx attribute index (zero-based).
+ *
+ * \returns name of the specified attribute.
+ */
+CINDEX_LINKAGE
+CXString clang_HTMLStartTag_getAttrName(CXComment Comment, unsigned AttrIdx);
+
+/**
+ * \param Comment a \c CXComment_HTMLStartTag AST node.
+ *
+ * \param AttrIdx attribute index (zero-based).
+ *
+ * \returns value of the specified attribute.
+ */
+CINDEX_LINKAGE
+CXString clang_HTMLStartTag_getAttrValue(CXComment Comment, unsigned AttrIdx);
+
+/**
+ * \param Comment a \c CXComment_BlockCommand AST node.
+ *
+ * \returns name of the block command.
+ */
+CINDEX_LINKAGE
+CXString clang_BlockCommandComment_getCommandName(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_BlockCommand AST node.
+ *
+ * \returns number of word-like arguments.
+ */
+CINDEX_LINKAGE
+unsigned clang_BlockCommandComment_getNumArgs(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_BlockCommand AST node.
+ *
+ * \param ArgIdx argument index (zero-based).
+ *
+ * \returns text of the specified word-like argument.
+ */
+CINDEX_LINKAGE
+CXString clang_BlockCommandComment_getArgText(CXComment Comment,
+                                              unsigned ArgIdx);
+
+/**
+ * \param Comment a \c CXComment_BlockCommand or
+ * \c CXComment_VerbatimBlockCommand AST node.
+ *
+ * \returns paragraph argument of the block command.
+ */
+CINDEX_LINKAGE
+CXComment clang_BlockCommandComment_getParagraph(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_ParamCommand AST node.
+ *
+ * \returns parameter name.
+ */
+CINDEX_LINKAGE
+CXString clang_ParamCommandComment_getParamName(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_ParamCommand AST node.
+ *
+ * \returns non-zero if the parameter that this AST node represents was found
+ * in the function prototype and \c clang_ParamCommandComment_getParamIndex
+ * function will return a meaningful value.
+ */
+CINDEX_LINKAGE
+unsigned clang_ParamCommandComment_isParamIndexValid(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_ParamCommand AST node.
+ *
+ * \returns zero-based parameter index in function prototype.
+ */
+CINDEX_LINKAGE
+unsigned clang_ParamCommandComment_getParamIndex(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_ParamCommand AST node.
+ *
+ * \returns non-zero if parameter passing direction was specified explicitly in
+ * the comment.
+ */
+CINDEX_LINKAGE
+unsigned clang_ParamCommandComment_isDirectionExplicit(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_ParamCommand AST node.
+ *
+ * \returns parameter passing direction.
+ */
+CINDEX_LINKAGE
+enum CXCommentParamPassDirection clang_ParamCommandComment_getDirection(
+                                                            CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_TParamCommand AST node.
+ *
+ * \returns template parameter name.
+ */
+CINDEX_LINKAGE
+CXString clang_TParamCommandComment_getParamName(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_TParamCommand AST node.
+ *
+ * \returns non-zero if the parameter that this AST node represents was found
+ * in the template parameter list and
+ * \c clang_TParamCommandComment_getDepth and
+ * \c clang_TParamCommandComment_getIndex functions will return a meaningful
+ * value.
+ */
+CINDEX_LINKAGE
+unsigned clang_TParamCommandComment_isParamPositionValid(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_TParamCommand AST node.
+ *
+ * \returns zero-based nesting depth of this parameter in the template parameter list.
+ *
+ * For example,
+ * \verbatim
+ *     template<typename C, template<typename T> class TT>
+ *     void test(TT<int> aaa);
+ * \endverbatim
+ * for C and TT nesting depth is 0,
+ * for T nesting depth is 1.
+ */
+CINDEX_LINKAGE
+unsigned clang_TParamCommandComment_getDepth(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_TParamCommand AST node.
+ *
+ * \returns zero-based parameter index in the template parameter list at a
+ * given nesting depth.
+ *
+ * For example,
+ * \verbatim
+ *     template<typename C, template<typename T> class TT>
+ *     void test(TT<int> aaa);
+ * \endverbatim
+ * for C and TT nesting depth is 0, so we can ask for index at depth 0:
+ * at depth 0 C's index is 0, TT's index is 1.
+ *
+ * For T nesting depth is 1, so we can ask for index at depth 0 and 1:
+ * at depth 0 T's index is 1 (same as TT's),
+ * at depth 1 T's index is 0.
+ */
+CINDEX_LINKAGE
+unsigned clang_TParamCommandComment_getIndex(CXComment Comment, unsigned Depth);
+
+/**
+ * \param Comment a \c CXComment_VerbatimBlockLine AST node.
+ *
+ * \returns text contained in the AST node.
+ */
+CINDEX_LINKAGE
+CXString clang_VerbatimBlockLineComment_getText(CXComment Comment);
+
+/**
+ * \param Comment a \c CXComment_VerbatimLine AST node.
+ *
+ * \returns text contained in the AST node.
+ */
+CINDEX_LINKAGE CXString clang_VerbatimLineComment_getText(CXComment Comment);
+
+/**
+ * Convert an HTML tag AST node to string.
+ *
+ * \param Comment a \c CXComment_HTMLStartTag or \c CXComment_HTMLEndTag AST
+ * node.
+ *
+ * \returns string containing an HTML tag.
+ */
+CINDEX_LINKAGE CXString clang_HTMLTagComment_getAsString(CXComment Comment);
+
+/**
+ * Convert a given full parsed comment to an HTML fragment.
+ *
+ * Specific details of HTML layout are subject to change.  Don't try to parse
+ * this HTML back into an AST, use other APIs instead.
+ *
+ * Currently the following CSS classes are used:
+ * \li "para-brief" for \paragraph and equivalent commands;
+ * \li "para-returns" for \\returns paragraph and equivalent commands;
+ * \li "word-returns" for the "Returns" word in \\returns paragraph.
+ *
+ * Function argument documentation is rendered as a \<dl\> list with arguments
+ * sorted in function prototype order.  CSS classes used:
+ * \li "param-name-index-NUMBER" for parameter name (\<dt\>);
+ * \li "param-descr-index-NUMBER" for parameter description (\<dd\>);
+ * \li "param-name-index-invalid" and "param-descr-index-invalid" are used if
+ * parameter index is invalid.
+ *
+ * Template parameter documentation is rendered as a \<dl\> list with
+ * parameters sorted in template parameter list order.  CSS classes used:
+ * \li "tparam-name-index-NUMBER" for parameter name (\<dt\>);
+ * \li "tparam-descr-index-NUMBER" for parameter description (\<dd\>);
+ * \li "tparam-name-index-other" and "tparam-descr-index-other" are used for
+ * names inside template template parameters;
+ * \li "tparam-name-index-invalid" and "tparam-descr-index-invalid" are used if
+ * parameter position is invalid.
+ *
+ * \param Comment a \c CXComment_FullComment AST node.
+ *
+ * \returns string containing an HTML fragment.
+ */
+CINDEX_LINKAGE CXString clang_FullComment_getAsHTML(CXComment Comment);
+
+/**
+ * Convert a given full parsed comment to an XML document.
+ *
+ * A Relax NG schema for the XML can be found in comment-xml-schema.rng file
+ * inside clang source tree.
+ *
+ * \param Comment a \c CXComment_FullComment AST node.
+ *
+ * \returns string containing an XML document.
+ */
+CINDEX_LINKAGE CXString clang_FullComment_getAsXML(CXComment Comment);
+
+/**
+ * CXAPISet is an opaque type that represents a data structure containing all
+ * the API information for a given translation unit. This can be used for a
+ * single symbol symbol graph for a given symbol.
+ */
+typedef struct CXAPISetImpl *CXAPISet;
+
+/**
+ * Traverses the translation unit to create a \c CXAPISet.
+ *
+ * \param tu is the \c CXTranslationUnit to build the \c CXAPISet for.
+ *
+ * \param out_api is a pointer to the output of this function. It is needs to be
+ * disposed of by calling clang_disposeAPISet.
+ *
+ * \returns Error code indicating success or failure of the APISet creation.
+ */
+CINDEX_LINKAGE enum CXErrorCode clang_createAPISet(CXTranslationUnit tu,
+                                                   CXAPISet *out_api);
+
+/**
+ * Dispose of an APISet.
+ *
+ * The provided \c CXAPISet can not be used after this function is called.
+ */
+CINDEX_LINKAGE void clang_disposeAPISet(CXAPISet api);
+
+/**
+ * Generate a single symbol symbol graph for the given USR. Returns a null
+ * string if the associated symbol can not be found in the provided \c CXAPISet.
+ *
+ * The output contains the symbol graph as well as some additional information
+ * about related symbols.
+ *
+ * \param usr is a string containing the USR of the symbol to generate the
+ * symbol graph for.
+ *
+ * \param api the \c CXAPISet to look for the symbol in.
+ *
+ * \returns a string containing the serialized symbol graph representation for
+ * the symbol being queried or a null string if it can not be found in the
+ * APISet.
+ */
+CINDEX_LINKAGE CXString clang_getSymbolGraphForUSR(const char *usr,
+                                                   CXAPISet api);
+
+/**
+ * Generate a single symbol symbol graph for the declaration at the given
+ * cursor. Returns a null string if the AST node for the cursor isn't a
+ * declaration.
+ *
+ * The output contains the symbol graph as well as some additional information
+ * about related symbols.
+ *
+ * \param cursor the declaration for which to generate the single symbol symbol
+ * graph.
+ *
+ * \returns a string containing the serialized symbol graph representation for
+ * the symbol being queried or a null string if it can not be found in the
+ * APISet.
+ */
+CINDEX_LINKAGE CXString clang_getSymbolGraphForCursor(CXCursor cursor);
+
+/**
+ * @}
+ */
+
+LLVM_CLANG_C_EXTERN_C_END
+
+#endif /* CLANG_C_DOCUMENTATION_H */
+

vendor/llvm/include/clang-c/ExternC.h

@@ -0,0 +1,39 @@
+/*===- clang-c/ExternC.h - Wrapper for 'extern "C"' ---------------*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This file defines an 'extern "C"' wrapper.                                 *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_EXTERN_C_H
+#define LLVM_CLANG_C_EXTERN_C_H
+
+#ifdef __clang__
+#define LLVM_CLANG_C_STRICT_PROTOTYPES_BEGIN                                   \
+  _Pragma("clang diagnostic push")                                             \
+      _Pragma("clang diagnostic error \"-Wstrict-prototypes\"")
+#define LLVM_CLANG_C_STRICT_PROTOTYPES_END _Pragma("clang diagnostic pop")
+#else
+#define LLVM_CLANG_C_STRICT_PROTOTYPES_BEGIN
+#define LLVM_CLANG_C_STRICT_PROTOTYPES_END
+#endif
+
+#ifdef __cplusplus
+#define LLVM_CLANG_C_EXTERN_C_BEGIN                                            \
+  extern "C" {                                                                 \
+  LLVM_CLANG_C_STRICT_PROTOTYPES_BEGIN
+#define LLVM_CLANG_C_EXTERN_C_END                                              \
+  LLVM_CLANG_C_STRICT_PROTOTYPES_END                                           \
+  }
+#else
+#define LLVM_CLANG_C_EXTERN_C_BEGIN LLVM_CLANG_C_STRICT_PROTOTYPES_BEGIN
+#define LLVM_CLANG_C_EXTERN_C_END LLVM_CLANG_C_STRICT_PROTOTYPES_END
+#endif
+
+#endif

vendor/llvm/include/clang-c/FatalErrorHandler.h

@@ -0,0 +1,32 @@
+/*===-- clang-c/FatalErrorHandler.h - Fatal Error Handling --------*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_FATAL_ERROR_HANDLER_H
+#define LLVM_CLANG_C_FATAL_ERROR_HANDLER_H
+
+#include "clang-c/ExternC.h"
+
+LLVM_CLANG_C_EXTERN_C_BEGIN
+
+/**
+ * Installs error handler that prints error message to stderr and calls abort().
+ * Replaces currently installed error handler (if any).
+ */
+void clang_install_aborting_llvm_fatal_error_handler(void);
+
+/**
+ * Removes currently installed error handler (if any).
+ * If no error handler is intalled, the default strategy is to print error
+ * message to stderr and call exit(1).
+ */
+void clang_uninstall_llvm_fatal_error_handler(void);
+
+LLVM_CLANG_C_EXTERN_C_END
+
+#endif

vendor/llvm/include/clang-c/Platform.h

@@ -0,0 +1,53 @@
+/*===-- clang-c/Platform.h - C Index platform decls   -------------*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header provides platform specific macros (dllimport, deprecated, ...) *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_PLATFORM_H
+#define LLVM_CLANG_C_PLATFORM_H
+
+#include "clang-c/ExternC.h"
+
+LLVM_CLANG_C_EXTERN_C_BEGIN
+
+/* Windows DLL import/export. */
+#ifndef CINDEX_NO_EXPORTS
+  #define CINDEX_EXPORTS
+#endif
+#ifdef _WIN32
+  #ifdef CINDEX_EXPORTS
+    #ifdef _CINDEX_LIB_
+      #define CINDEX_LINKAGE __declspec(dllexport)
+    #else
+      #define CINDEX_LINKAGE __declspec(dllimport)
+    #endif
+  #endif
+#elif defined(CINDEX_EXPORTS) && defined(__GNUC__)
+  #define CINDEX_LINKAGE __attribute__((visibility("default")))
+#endif
+
+#ifndef CINDEX_LINKAGE
+  #define CINDEX_LINKAGE
+#endif
+
+#ifdef __GNUC__
+  #define CINDEX_DEPRECATED __attribute__((deprecated))
+#else
+  #ifdef _MSC_VER
+    #define CINDEX_DEPRECATED __declspec(deprecated)
+  #else
+    #define CINDEX_DEPRECATED
+  #endif
+#endif
+
+LLVM_CLANG_C_EXTERN_C_END
+
+#endif

vendor/llvm/include/clang-c/Rewrite.h

@@ -0,0 +1,63 @@
+/*===-- clang-c/Rewrite.h - C CXRewriter   --------------------------*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_REWRITE_H
+#define LLVM_CLANG_C_REWRITE_H
+
+#include "clang-c/CXString.h"
+#include "clang-c/ExternC.h"
+#include "clang-c/Index.h"
+#include "clang-c/Platform.h"
+
+LLVM_CLANG_C_EXTERN_C_BEGIN
+
+typedef void *CXRewriter;
+
+/**
+ * Create CXRewriter.
+ */
+CINDEX_LINKAGE CXRewriter clang_CXRewriter_create(CXTranslationUnit TU);
+
+/**
+ * Insert the specified string at the specified location in the original buffer.
+ */
+CINDEX_LINKAGE void clang_CXRewriter_insertTextBefore(CXRewriter Rew, CXSourceLocation Loc,
+                                           const char *Insert);
+
+/**
+ * Replace the specified range of characters in the input with the specified
+ * replacement.
+ */
+CINDEX_LINKAGE void clang_CXRewriter_replaceText(CXRewriter Rew, CXSourceRange ToBeReplaced,
+                                      const char *Replacement);
+
+/**
+ * Remove the specified range.
+ */
+CINDEX_LINKAGE void clang_CXRewriter_removeText(CXRewriter Rew, CXSourceRange ToBeRemoved);
+
+/**
+ * Save all changed files to disk.
+ * Returns 1 if any files were not saved successfully, returns 0 otherwise.
+ */
+CINDEX_LINKAGE int clang_CXRewriter_overwriteChangedFiles(CXRewriter Rew);
+
+/**
+ * Write out rewritten version of the main file to stdout.
+ */
+CINDEX_LINKAGE void clang_CXRewriter_writeMainFileToStdOut(CXRewriter Rew);
+
+/**
+ * Free the given CXRewriter.
+ */
+CINDEX_LINKAGE void clang_CXRewriter_dispose(CXRewriter Rew);
+
+LLVM_CLANG_C_EXTERN_C_END
+
+#endif

vendor/rlImGui/imgui_impl_raylib.h

@@ -0,0 +1,50 @@
+/**********************************************************************************************
+*
+*   raylibExtras * Utilities and Shared Components for Raylib
+*
+*   rlImGui * basic ImGui integration
+*
+*   LICENSE: ZLIB
+*   Copyright (c) 2020-2021 Jeffery Myers
+*
+*   This software is provided "as-is", without any express or implied warranty. In no event
+*   will the authors be held liable for any damages arising from the use of this software.
+*
+*   Permission is granted to anyone to use this software for any purpose, including commercial
+*   applications, and to alter it and redistribute it freely, subject to the following restrictions:
+*
+*     1. The origin of this software must not be misrepresented; you must not claim that you
+*     wrote the original software. If you use this software in a product, an acknowledgment
+*     in the product documentation would be appreciated but is not required.
+*
+*     2. Altered source versions must be plainly marked as such, and must not be misrepresented
+*     as being the original software.
+*
+*     3. This notice may not be removed or altered from any source distribution.
+*
+
+**********************************************************************************************/
+
+// dear imgui: Platform Backend for Raylib
+// (Info: Raylib is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc. using OpenGL)
+// This is is the low level ImGui backend for raylib, a higher level API that matches the raylib API can be found in rlImGui.h
+
+// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
+// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
+// Learn about Dear ImGui:
+// - FAQ                  https://dearimgui.com/faq
+// - Getting Started      https://dearimgui.com/getting-started
+// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
+// - Introduction, links and more at the top of imgui.cpp
+
+#pragma once
+#include "imgui.h"      // IMGUI_IMPL_API
+#ifndef IMGUI_DISABLE
+
+IMGUI_IMPL_API bool ImGui_ImplRaylib_Init(void);
+IMGUI_IMPL_API void ImGui_ImplRaylib_Shutdown(void);
+IMGUI_IMPL_API void ImGui_ImplRaylib_NewFrame(void);
+IMGUI_IMPL_API void ImGui_ImplRaylib_RenderDrawData(ImDrawData* draw_data);
+IMGUI_IMPL_API bool ImGui_ImplRaylib_ProcessEvents(void);
+
+#endif // #ifndef IMGUI_DISABLE

vendor/rlImGui/rlImGui.cpp

@@ -0,0 +1,951 @@
+/**********************************************************************************************
+*
+*   raylibExtras * Utilities and Shared Components for Raylib
+*
+*   rlImGui * basic ImGui integration
+*
+*   LICENSE: ZLIB
+*   Copyright (c) 2020-2021 Jeffery Myers
+*
+*   This software is provided "as-is", without any express or implied warranty. In no event
+*   will the authors be held liable for any damages arising from the use of this software.
+*
+*   Permission is granted to anyone to use this software for any purpose, including commercial
+*   applications, and to alter it and redistribute it freely, subject to the following restrictions:
+*
+*     1. The origin of this software must not be misrepresented; you must not claim that you
+*     wrote the original software. If you use this software in a product, an acknowledgment
+*     in the product documentation would be appreciated but is not required.
+*
+*     2. Altered source versions must be plainly marked as such, and must not be misrepresented
+*     as being the original software.
+*
+*     3. This notice may not be removed or altered from any source distribution.
+*
+**********************************************************************************************/
+#include "rlImGui.h"
+
+#include "imgui_impl_raylib.h"
+
+#include "raylib.h"
+#include "rlgl.h"
+
+#include "imgui.h"
+
+#include <math.h>
+#include <limits>
+#include <cstdint>
+
+#ifndef NO_FONT_AWESOME
+#include "extras/FA6FreeSolidFontData.h"
+#endif
+
+static ImGuiMouseCursor CurrentMouseCursor = ImGuiMouseCursor_COUNT;
+static MouseCursor MouseCursorMap[ImGuiMouseCursor_COUNT];
+
+ImGuiContext* GlobalContext = nullptr;
+
+static constexpr size_t MAX_RAYLIB_KEY = 349;
+static ImGuiKey RaylibKeyMap[MAX_RAYLIB_KEY];
+static bool KeyMapInitialized = false;
+
+static bool LastFrameFocused = false;
+
+static bool LastControlPressed = false;
+static bool LastShiftPressed = false;
+static bool LastAltPressed = false;
+static bool LastSuperPressed = false;
+
+// internal only functions
+bool rlImGuiIsControlDown() { return IsKeyDown(KEY_RIGHT_CONTROL) || IsKeyDown(KEY_LEFT_CONTROL); }
+bool rlImGuiIsShiftDown() { return IsKeyDown(KEY_RIGHT_SHIFT) || IsKeyDown(KEY_LEFT_SHIFT); }
+bool rlImGuiIsAltDown() { return IsKeyDown(KEY_RIGHT_ALT) || IsKeyDown(KEY_LEFT_ALT); }
+bool rlImGuiIsSuperDown() { return IsKeyDown(KEY_RIGHT_SUPER) || IsKeyDown(KEY_LEFT_SUPER); }
+
+struct ImGui_ImplRaylib_Data
+{
+};
+
+ImGui_ImplRaylib_Data* ImGui_ImplRaylib_GetBackendData()
+{
+    return ImGui::GetCurrentContext() ? static_cast<ImGui_ImplRaylib_Data*>(ImGui::GetPlatformIO().Renderer_RenderState) : nullptr;
+}
+
+void ImGui_ImplRaylib_CreateBackendData()
+{
+    if (!ImGui::GetCurrentContext() || ImGui::GetPlatformIO().Renderer_RenderState)
+        return;
+
+    ImGui::GetPlatformIO().Renderer_RenderState = MemAlloc(sizeof(ImGui_ImplRaylib_Data));
+}
+
+void ImGui_ImplRaylib_FreeBackendData()
+{
+    if (!ImGui::GetCurrentContext())
+        return;
+
+    MemFree(ImGui::GetPlatformIO().Renderer_RenderState);
+}
+
+
+void(*rlFontLoadCallback)() = nullptr;
+
+void rlImGuiSetLoadFontsCallback(void(*callback)())
+{
+	rlFontLoadCallback = callback;
+}
+
+
+Vector2 GetDisplayScale()
+{
+#if defined(__EMSCRIPTEN__)
+    return Vector2{ 1,1 };
+#else
+    return GetWindowScaleDPI();
+#endif
+}
+
+static const char* GetClipTextCallback(ImGuiContext*)
+{
+    return GetClipboardText();
+}
+
+static void SetClipTextCallback(ImGuiContext*, const char* text)
+{
+    SetClipboardText(text);
+}
+
+static void ImGuiNewFrame(float deltaTime)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    auto* platData = ImGui_ImplRaylib_GetBackendData();
+    if (!platData)
+    {
+        ImGui_ImplRaylib_CreateBackendData();
+        platData = ImGui_ImplRaylib_GetBackendData();
+        if (!platData)
+            return;
+    }
+
+    Vector2 resolutionScale = GetDisplayScale();
+
+#ifndef PLATFORM_DRM
+    if (IsWindowFullscreen())
+    {
+        int monitor = GetCurrentMonitor();
+        io.DisplaySize.x = float(GetMonitorWidth(monitor));
+        io.DisplaySize.y = float(GetMonitorHeight(monitor));
+    }
+    else
+    {
+        io.DisplaySize.x = float(GetScreenWidth());
+        io.DisplaySize.y = float(GetScreenHeight());
+    }
+
+#if !defined(__APPLE__)
+    if (!IsWindowState(FLAG_WINDOW_HIGHDPI))
+        resolutionScale = Vector2{ 1,1 };
+#endif
+#else
+    io.DisplaySize.x = float(GetScreenWidth());
+    io.DisplaySize.y = float(GetScreenHeight());
+#endif
+
+    io.DisplayFramebufferScale = ImVec2(resolutionScale.x, resolutionScale.y);
+
+    if (deltaTime <= 0)
+        deltaTime = 0.001f;
+
+    io.DeltaTime = deltaTime;
+
+    if (ImGui::GetIO().BackendFlags & ImGuiBackendFlags_HasMouseCursors)
+    {
+        if ((io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange) == 0)
+        {
+            ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();
+            if (imgui_cursor != CurrentMouseCursor || io.MouseDrawCursor)
+            {
+                CurrentMouseCursor = imgui_cursor;
+                if (io.MouseDrawCursor || imgui_cursor == ImGuiMouseCursor_None)
+                {
+                    HideCursor();
+                }
+                else
+                {
+                    ShowCursor();
+
+                    if (!(io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange))
+                    {
+                        SetMouseCursor((imgui_cursor > -1 && imgui_cursor < ImGuiMouseCursor_COUNT) ? MouseCursorMap[imgui_cursor] : MOUSE_CURSOR_DEFAULT);
+                    }
+                }
+            }
+        }
+    }
+}
+
+static void ImGuiTriangleVert(const ImDrawVert& idx_vert)
+{
+#ifdef __cpp_designated_initializers
+    Color c {
+       .r = static_cast<unsigned char>(idx_vert.col>>0),
+       .g = static_cast<unsigned char>(idx_vert.col>>8),
+       .b = static_cast<unsigned char>(idx_vert.col>>16),
+       .a = static_cast<unsigned char>(idx_vert.col>>24),
+    };
+#else
+    Color c {
+       static_cast<unsigned char>(idx_vert.col>>0),
+       static_cast<unsigned char>(idx_vert.col>>8),
+       static_cast<unsigned char>(idx_vert.col>>16),
+       static_cast<unsigned char>(idx_vert.col>>24),
+    };
+#endif
+    rlColor4ub(c.r, c.g, c.b, c.a);
+    rlTexCoord2f(idx_vert.uv.x, idx_vert.uv.y);
+    rlVertex2f(idx_vert.pos.x, idx_vert.pos.y);
+}
+
+static void ImGuiRenderTriangles(unsigned int count, int indexStart, const ImVector<ImDrawIdx>& indexBuffer, const ImVector<ImDrawVert>& vertBuffer, ImTextureID texturePtr)
+{
+    if (count < 3)
+        return;
+
+    unsigned int textureId = static_cast<unsigned int>(texturePtr);
+
+    rlBegin(RL_TRIANGLES);
+    rlSetTexture(textureId);
+
+    for (unsigned int i = 0; i <= (count - 3); i += 3)
+    {
+        ImDrawIdx indexA = indexBuffer[indexStart + i];
+        ImDrawIdx indexB = indexBuffer[indexStart + i + 1];
+        ImDrawIdx indexC = indexBuffer[indexStart + i + 2];
+
+        ImDrawVert vertexA = vertBuffer[indexA];
+        ImDrawVert vertexB = vertBuffer[indexB];
+        ImDrawVert vertexC = vertBuffer[indexC];
+
+        ImGuiTriangleVert(vertexA);
+        ImGuiTriangleVert(vertexB);
+        ImGuiTriangleVert(vertexC);
+    }
+    rlEnd();
+}
+
+static void EnableScissor(float x, float y, float width, float height)
+{
+    rlEnableScissorTest();
+    ImGuiIO& io = ImGui::GetIO();
+
+    ImVec2 scale = io.DisplayFramebufferScale;
+#if !defined(__APPLE__)
+    if (!IsWindowState(FLAG_WINDOW_HIGHDPI))
+    {
+        scale.x = 1;
+        scale.y = 1;
+    }
+#endif
+
+    rlScissor((int)(x * scale.x),
+        int((io.DisplaySize.y - (int)(y + height)) * scale.y),
+        (int)(width * scale.x),
+        (int)(height * scale.y));
+}
+
+static void SetupMouseCursors(void)
+{
+    MouseCursorMap[ImGuiMouseCursor_Arrow] = MOUSE_CURSOR_ARROW;
+    MouseCursorMap[ImGuiMouseCursor_TextInput] = MOUSE_CURSOR_IBEAM;
+    MouseCursorMap[ImGuiMouseCursor_Hand] = MOUSE_CURSOR_POINTING_HAND;
+    MouseCursorMap[ImGuiMouseCursor_ResizeAll] = MOUSE_CURSOR_RESIZE_ALL;
+    MouseCursorMap[ImGuiMouseCursor_ResizeEW] = MOUSE_CURSOR_RESIZE_EW;
+    MouseCursorMap[ImGuiMouseCursor_ResizeNESW] = MOUSE_CURSOR_RESIZE_NESW;
+    MouseCursorMap[ImGuiMouseCursor_ResizeNS] = MOUSE_CURSOR_RESIZE_NS;
+    MouseCursorMap[ImGuiMouseCursor_ResizeNWSE] = MOUSE_CURSOR_RESIZE_NWSE;
+    MouseCursorMap[ImGuiMouseCursor_NotAllowed] = MOUSE_CURSOR_NOT_ALLOWED;
+}
+
+void SetupFontAwesome(void)
+{
+#ifndef NO_FONT_AWESOME
+    static const ImWchar icons_ranges[] = { ICON_MIN_FA, ICON_MAX_FA, 0 };
+    ImFontConfig icons_config;
+    icons_config.MergeMode = true;
+    icons_config.PixelSnapH = true;
+    icons_config.FontDataOwnedByAtlas = false;
+
+    icons_config.GlyphMaxAdvanceX = std::numeric_limits<float>::max();
+    icons_config.RasterizerMultiply = 1.0f;
+    icons_config.OversampleH = 2;
+    icons_config.OversampleV = 1;
+
+    icons_config.GlyphRanges = icons_ranges;
+
+    ImGuiIO& io = ImGui::GetIO();
+
+    float size = FONT_AWESOME_ICON_SIZE;
+#if !defined(__APPLE__)
+    if (!IsWindowState(FLAG_WINDOW_HIGHDPI))
+        size *= GetDisplayScale().y;
+
+    icons_config.RasterizerMultiply = GetDisplayScale().y;
+#endif
+
+    io.Fonts->AddFontFromMemoryCompressedTTF((void*)fa_solid_900_compressed_data, fa_solid_900_compressed_size, size, &icons_config, icons_ranges);
+#endif
+
+}
+
+void SetupBackend(void)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendPlatformName = "imgui_impl_raylib";
+    io.BackendFlags |= ImGuiBackendFlags_HasGamepad | ImGuiBackendFlags_HasSetMousePos | ImGuiBackendFlags_RendererHasTextures;
+
+#ifndef PLATFORM_DRM
+    io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;
+#endif
+
+    io.MousePos = ImVec2(0, 0);
+
+    ImGuiPlatformIO& platformIO = ImGui::GetPlatformIO();
+
+    platformIO.Platform_SetClipboardTextFn = SetClipTextCallback;
+    platformIO.Platform_GetClipboardTextFn = GetClipTextCallback;
+
+    platformIO.Platform_ClipboardUserData = nullptr;
+
+    ImGui_ImplRaylib_CreateBackendData();
+}
+
+void rlImGuiEndInitImGui(void)
+{
+    ImGui::SetCurrentContext(GlobalContext);
+
+    SetupFontAwesome();
+
+    SetupMouseCursors();
+
+    SetupBackend();
+}
+
+static void SetupKeymap(void)
+{
+    if (KeyMapInitialized)
+        return;
+
+    KeyMapInitialized = true;
+
+    memset(RaylibKeyMap, 0, MAX_RAYLIB_KEY * sizeof(ImGuiKey));
+
+    // build up a map of raylib keys to ImGuiKeys
+    RaylibKeyMap[KEY_APOSTROPHE] = ImGuiKey_Apostrophe;
+    RaylibKeyMap[KEY_COMMA] = ImGuiKey_Comma;
+    RaylibKeyMap[KEY_MINUS] = ImGuiKey_Minus;
+    RaylibKeyMap[KEY_PERIOD] = ImGuiKey_Period;
+    RaylibKeyMap[KEY_SLASH] = ImGuiKey_Slash;
+    RaylibKeyMap[KEY_ZERO] = ImGuiKey_0;
+    RaylibKeyMap[KEY_ONE] = ImGuiKey_1;
+    RaylibKeyMap[KEY_TWO] = ImGuiKey_2;
+    RaylibKeyMap[KEY_THREE] = ImGuiKey_3;
+    RaylibKeyMap[KEY_FOUR] = ImGuiKey_4;
+    RaylibKeyMap[KEY_FIVE] = ImGuiKey_5;
+    RaylibKeyMap[KEY_SIX] = ImGuiKey_6;
+    RaylibKeyMap[KEY_SEVEN] = ImGuiKey_7;
+    RaylibKeyMap[KEY_EIGHT] = ImGuiKey_8;
+    RaylibKeyMap[KEY_NINE] = ImGuiKey_9;
+    RaylibKeyMap[KEY_SEMICOLON] = ImGuiKey_Semicolon;
+    RaylibKeyMap[KEY_EQUAL] = ImGuiKey_Equal;
+    RaylibKeyMap[KEY_A] = ImGuiKey_A;
+    RaylibKeyMap[KEY_B] = ImGuiKey_B;
+    RaylibKeyMap[KEY_C] = ImGuiKey_C;
+    RaylibKeyMap[KEY_D] = ImGuiKey_D;
+    RaylibKeyMap[KEY_E] = ImGuiKey_E;
+    RaylibKeyMap[KEY_F] = ImGuiKey_F;
+    RaylibKeyMap[KEY_G] = ImGuiKey_G;
+    RaylibKeyMap[KEY_H] = ImGuiKey_H;
+    RaylibKeyMap[KEY_I] = ImGuiKey_I;
+    RaylibKeyMap[KEY_J] = ImGuiKey_J;
+    RaylibKeyMap[KEY_K] = ImGuiKey_K;
+    RaylibKeyMap[KEY_L] = ImGuiKey_L;
+    RaylibKeyMap[KEY_M] = ImGuiKey_M;
+    RaylibKeyMap[KEY_N] = ImGuiKey_N;
+    RaylibKeyMap[KEY_O] = ImGuiKey_O;
+    RaylibKeyMap[KEY_P] = ImGuiKey_P;
+    RaylibKeyMap[KEY_Q] = ImGuiKey_Q;
+    RaylibKeyMap[KEY_R] = ImGuiKey_R;
+    RaylibKeyMap[KEY_S] = ImGuiKey_S;
+    RaylibKeyMap[KEY_T] = ImGuiKey_T;
+    RaylibKeyMap[KEY_U] = ImGuiKey_U;
+    RaylibKeyMap[KEY_V] = ImGuiKey_V;
+    RaylibKeyMap[KEY_W] = ImGuiKey_W;
+    RaylibKeyMap[KEY_X] = ImGuiKey_X;
+    RaylibKeyMap[KEY_Y] = ImGuiKey_Y;
+    RaylibKeyMap[KEY_Z] = ImGuiKey_Z;
+    RaylibKeyMap[KEY_SPACE] = ImGuiKey_Space;
+    RaylibKeyMap[KEY_ESCAPE] = ImGuiKey_Escape;
+    RaylibKeyMap[KEY_ENTER] = ImGuiKey_Enter;
+    RaylibKeyMap[KEY_TAB] = ImGuiKey_Tab;
+    RaylibKeyMap[KEY_BACKSPACE] = ImGuiKey_Backspace;
+    RaylibKeyMap[KEY_INSERT] = ImGuiKey_Insert;
+    RaylibKeyMap[KEY_DELETE] = ImGuiKey_Delete;
+    RaylibKeyMap[KEY_RIGHT] = ImGuiKey_RightArrow;
+    RaylibKeyMap[KEY_LEFT] = ImGuiKey_LeftArrow;
+    RaylibKeyMap[KEY_DOWN] = ImGuiKey_DownArrow;
+    RaylibKeyMap[KEY_UP] = ImGuiKey_UpArrow;
+    RaylibKeyMap[KEY_PAGE_UP] = ImGuiKey_PageUp;
+    RaylibKeyMap[KEY_PAGE_DOWN] = ImGuiKey_PageDown;
+    RaylibKeyMap[KEY_HOME] = ImGuiKey_Home;
+    RaylibKeyMap[KEY_END] = ImGuiKey_End;
+    RaylibKeyMap[KEY_CAPS_LOCK] = ImGuiKey_CapsLock;
+    RaylibKeyMap[KEY_SCROLL_LOCK] = ImGuiKey_ScrollLock;
+    RaylibKeyMap[KEY_NUM_LOCK] = ImGuiKey_NumLock;
+    RaylibKeyMap[KEY_PRINT_SCREEN] = ImGuiKey_PrintScreen;
+    RaylibKeyMap[KEY_PAUSE] = ImGuiKey_Pause;
+    RaylibKeyMap[KEY_F1] = ImGuiKey_F1;
+    RaylibKeyMap[KEY_F2] = ImGuiKey_F2;
+    RaylibKeyMap[KEY_F3] = ImGuiKey_F3;
+    RaylibKeyMap[KEY_F4] = ImGuiKey_F4;
+    RaylibKeyMap[KEY_F5] = ImGuiKey_F5;
+    RaylibKeyMap[KEY_F6] = ImGuiKey_F6;
+    RaylibKeyMap[KEY_F7] = ImGuiKey_F7;
+    RaylibKeyMap[KEY_F8] = ImGuiKey_F8;
+    RaylibKeyMap[KEY_F9] = ImGuiKey_F9;
+    RaylibKeyMap[KEY_F10] = ImGuiKey_F10;
+    RaylibKeyMap[KEY_F11] = ImGuiKey_F11;
+    RaylibKeyMap[KEY_F12] = ImGuiKey_F12;
+    RaylibKeyMap[KEY_LEFT_SHIFT] = ImGuiKey_LeftShift;
+    RaylibKeyMap[KEY_LEFT_CONTROL] = ImGuiKey_LeftCtrl;
+    RaylibKeyMap[KEY_LEFT_ALT] = ImGuiKey_LeftAlt;
+    RaylibKeyMap[KEY_LEFT_SUPER] = ImGuiKey_LeftSuper;
+    RaylibKeyMap[KEY_RIGHT_SHIFT] = ImGuiKey_RightShift;
+    RaylibKeyMap[KEY_RIGHT_CONTROL] = ImGuiKey_RightCtrl;
+    RaylibKeyMap[KEY_RIGHT_ALT] = ImGuiKey_RightAlt;
+    RaylibKeyMap[KEY_RIGHT_SUPER] = ImGuiKey_RightSuper;
+    RaylibKeyMap[KEY_KB_MENU] = ImGuiKey_Menu;
+    RaylibKeyMap[KEY_LEFT_BRACKET] = ImGuiKey_LeftBracket;
+    RaylibKeyMap[KEY_BACKSLASH] = ImGuiKey_Backslash;
+    RaylibKeyMap[KEY_RIGHT_BRACKET] = ImGuiKey_RightBracket;
+    RaylibKeyMap[KEY_GRAVE] = ImGuiKey_GraveAccent;
+    RaylibKeyMap[KEY_KP_0] = ImGuiKey_Keypad0;
+    RaylibKeyMap[KEY_KP_1] = ImGuiKey_Keypad1;
+    RaylibKeyMap[KEY_KP_2] = ImGuiKey_Keypad2;
+    RaylibKeyMap[KEY_KP_3] = ImGuiKey_Keypad3;
+    RaylibKeyMap[KEY_KP_4] = ImGuiKey_Keypad4;
+    RaylibKeyMap[KEY_KP_5] = ImGuiKey_Keypad5;
+    RaylibKeyMap[KEY_KP_6] = ImGuiKey_Keypad6;
+    RaylibKeyMap[KEY_KP_7] = ImGuiKey_Keypad7;
+    RaylibKeyMap[KEY_KP_8] = ImGuiKey_Keypad8;
+    RaylibKeyMap[KEY_KP_9] = ImGuiKey_Keypad9;
+    RaylibKeyMap[KEY_KP_DECIMAL] = ImGuiKey_KeypadDecimal;
+    RaylibKeyMap[KEY_KP_DIVIDE] = ImGuiKey_KeypadDivide;
+    RaylibKeyMap[KEY_KP_MULTIPLY] = ImGuiKey_KeypadMultiply;
+    RaylibKeyMap[KEY_KP_SUBTRACT] = ImGuiKey_KeypadSubtract;
+    RaylibKeyMap[KEY_KP_ADD] = ImGuiKey_KeypadAdd;
+    RaylibKeyMap[KEY_KP_ENTER] = ImGuiKey_KeypadEnter;
+    RaylibKeyMap[KEY_KP_EQUAL] = ImGuiKey_KeypadEqual;
+}
+
+static void SetupGlobals(void)
+{
+    LastFrameFocused = IsWindowFocused();
+    LastControlPressed = false;
+    LastShiftPressed = false;
+    LastAltPressed = false;
+    LastSuperPressed = false;
+}
+
+void rlImGuiBeginInitImGui(void)
+{
+    SetupGlobals();
+    if (GlobalContext == nullptr)
+        GlobalContext = ImGui::CreateContext(nullptr);
+    SetupKeymap();
+
+	if (rlFontLoadCallback != nullptr)
+	{
+		rlFontLoadCallback();
+	}
+    else
+    {
+        ImGuiIO& io = ImGui::GetIO();
+
+        ImFontConfig defaultConfig;
+
+        static constexpr int DefaultFonSize = 13;
+
+        defaultConfig.SizePixels = DefaultFonSize;
+#if !defined(__APPLE__)
+        if (!IsWindowState(FLAG_WINDOW_HIGHDPI))
+            defaultConfig.SizePixels = ceilf(defaultConfig.SizePixels * GetDisplayScale().y);
+
+        defaultConfig.ExtraSizeScale = GetDisplayScale().y;
+#endif
+
+        defaultConfig.PixelSnapH = true;
+        io.Fonts->AddFontDefault(&defaultConfig);
+    }
+}
+
+void rlImGuiSetup(bool dark)
+{
+    rlImGuiBeginInitImGui();
+
+    if (dark)
+        ImGui::StyleColorsDark();
+    else
+        ImGui::StyleColorsLight();
+
+    rlImGuiEndInitImGui();
+}
+
+void rlImGuiBegin(void)
+{
+    ImGui::SetCurrentContext(GlobalContext);
+    rlImGuiBeginDelta(GetFrameTime());
+}
+
+void rlImGuiBeginDelta(float deltaTime)
+{
+    ImGui::SetCurrentContext(GlobalContext);
+
+    ImGuiNewFrame(deltaTime);
+    ImGui_ImplRaylib_ProcessEvents();
+    ImGui::NewFrame();
+}
+
+void rlImGuiEnd(void)
+{
+    ImGui::SetCurrentContext(GlobalContext);
+    ImGui::Render();
+    ImGui_ImplRaylib_RenderDrawData(ImGui::GetDrawData());
+}
+
+void rlImGuiShutdown(void)
+{
+    if (GlobalContext == nullptr)
+        return;
+
+    ImGui::SetCurrentContext(GlobalContext);
+    ImGui_ImplRaylib_Shutdown();
+
+    ImGui::DestroyContext(GlobalContext);
+    GlobalContext = nullptr;
+}
+
+void rlImGuiImage(const Texture* image)
+{
+    if (!image)
+        return;
+    
+    if (GlobalContext)
+        ImGui::SetCurrentContext(GlobalContext);
+    
+    ImGui::Image(ImTextureID(image->id), ImVec2(float(image->width), float(image->height)));
+}
+
+bool rlImGuiImageButton(const char* name, const Texture* image)
+{
+    if (!image)
+        return false;
+    
+    if (GlobalContext)
+        ImGui::SetCurrentContext(GlobalContext);
+    
+    return ImGui::ImageButton(name, ImTextureID(image->id), ImVec2(float(image->width), float(image->height)));
+}
+
+bool rlImGuiImageButtonSize(const char* name, const Texture* image, Vector2 size)
+{
+    if (!image)
+        return false;
+    
+    if (GlobalContext)
+        ImGui::SetCurrentContext(GlobalContext);
+   
+    return ImGui::ImageButton(name, ImTextureID(image->id), ImVec2(size.x, size.y));
+}
+
+void rlImGuiImageSize(const Texture* image, int width, int height)
+{
+    if (!image)
+        return;
+    
+    if (GlobalContext)
+        ImGui::SetCurrentContext(GlobalContext);
+    
+    ImGui::Image(ImTextureID(image->id), ImVec2(float(width), float(height)));
+}
+
+void rlImGuiImageSizeV(const Texture* image, Vector2 size)
+{
+    if (!image)
+        return;
+    
+    if (GlobalContext)
+        ImGui::SetCurrentContext(GlobalContext);
+    
+    ImGui::Image(ImTextureID(image->id), ImVec2(size.x, size.y));
+}
+
+void rlImGuiImageRect(const Texture* image, int destWidth, int destHeight, Rectangle sourceRect)
+{
+    if (!image)
+        return;
+    
+    if (GlobalContext)
+        ImGui::SetCurrentContext(GlobalContext);
+    
+    ImVec2 uv0;
+    ImVec2 uv1;
+
+    if (sourceRect.width < 0)
+    {
+        uv0.x = -sourceRect.x / image->width;
+        uv1.x = (uv0.x - float(fabs(sourceRect.width) / image->width));
+    }
+    else
+    {
+        uv0.x = sourceRect.x / image->width;
+        uv1.x = uv0.x + float(sourceRect.width / image->width);
+    }
+
+    if (sourceRect.height < 0)
+    {
+        uv0.y = -sourceRect.y / image->height;
+        uv1.y = (uv0.y - fabsf(sourceRect.height) / image->height);
+    }
+    else
+    {
+        uv0.y = sourceRect.y / image->height;
+        uv1.y = uv0.y + sourceRect.height / image->height;
+    }
+
+    ImGui::Image((ImTextureID)image->id, ImVec2(float(destWidth), float(destHeight)), uv0, uv1);
+}
+
+void rlImGuiImageRenderTexture(const RenderTexture* image)
+{
+    if (!image)
+        return;
+    
+    if (GlobalContext)
+        ImGui::SetCurrentContext(GlobalContext);
+    
+    rlImGuiImageRect(&image->texture, image->texture.width, image->texture.height, Rectangle{ 0,0, float(image->texture.width), -float(image->texture.height) });
+}
+
+void rlImGuiImageRenderTextureFit(const RenderTexture* image, bool center)
+{
+    if (!image)
+        return;
+    
+    if (GlobalContext)
+        ImGui::SetCurrentContext(GlobalContext);
+
+    ImVec2 area = ImGui::GetContentRegionAvail();
+
+    float scale =  area.x / image->texture.width;
+
+    float y = image->texture.height * scale;
+    if (y > area.y)
+    {
+        scale = area.y / image->texture.height;
+    }
+
+    int sizeX = int(image->texture.width * scale);
+    int sizeY = int(image->texture.height * scale);
+
+    if (center)
+    {
+        ImGui::SetCursorPosX(0);
+        ImGui::SetCursorPosX(area.x/2 - sizeX/2);
+        ImGui::SetCursorPosY(ImGui::GetCursorPosY() + (area.y / 2 - sizeY / 2));
+    }
+
+    rlImGuiImageRect(&image->texture, sizeX, sizeY, Rectangle{ 0,0, float(image->texture.width), -float(image->texture.height) });
+}
+
+// raw ImGui backend API
+bool ImGui_ImplRaylib_Init(void)
+{
+    SetupGlobals();
+
+    SetupKeymap();
+
+    SetupMouseCursors();
+
+    SetupBackend();
+
+    return true;
+}
+
+
+void ImGui_ImplRaylib_Shutdown()
+{
+    ImGuiIO& io =ImGui::GetIO();
+
+    for (auto& texture : ImGui::GetPlatformIO().Textures)
+    {
+        if (texture->Status != ImTextureStatus_Destroyed)
+        {
+            Texture* backendData = (Texture*)texture->BackendUserData;
+            if (backendData && IsTextureReady(*backendData))
+            {
+                UnloadTexture(*backendData);
+            }
+            if (backendData)
+                MemFree(backendData);
+
+            texture->BackendUserData = nullptr;
+            texture->Status = ImTextureStatus_Destroyed;
+            texture->SetTexID(ImTextureID_Invalid);
+        }
+    }
+
+    ImGui_ImplRaylib_FreeBackendData();
+}
+
+void ImGui_ImplRaylib_NewFrame(void)
+{
+    ImGuiNewFrame(GetFrameTime());
+}
+
+void ImGui_ImplRaylib_UpdateTexture(ImTextureData* tex)
+{
+    switch (tex->Status)
+    {
+        case ImTextureStatus_OK:
+        case ImTextureStatus_Destroyed:
+        default:
+            break;
+
+        case ImTextureStatus_WantCreate:
+        {
+            Image img = { 0 };
+            img.width = tex->Width;
+            img.height = tex->Height;
+
+            img.format = tex->Format == ImTextureFormat_Alpha8 ? PIXELFORMAT_UNCOMPRESSED_GRAYSCALE : PIXELFORMAT_UNCOMPRESSED_R8G8B8A8;
+            img.mipmaps = 1;
+            img.data = tex->GetPixels();
+
+            Texture* texture = (Texture*)MemAlloc(sizeof(Texture));
+            tex->BackendUserData = texture;;
+            *texture = LoadTextureFromImage(img);
+            tex->SetTexID(ImTextureID(texture->id));
+            tex->Status = ImTextureStatus_OK;
+        }
+            break;
+
+        case ImTextureStatus_WantUpdates:
+        {
+            Texture* texture = (Texture*)tex->BackendUserData;
+            if (!texture)
+                break;
+
+            UpdateTexture(*texture, tex->GetPixels());
+
+            tex->Status = ImTextureStatus_OK;
+        }
+            break;
+
+        case ImTextureStatus_WantDestroy:
+        {
+            Texture* texture = (Texture*)tex->BackendUserData;
+
+            if (!texture)
+                break;
+            UnloadTexture(*texture);
+            tex->Status = ImTextureStatus_Destroyed;
+            MemFree(texture);
+            tex->BackendUserData = nullptr;
+            tex->SetTexID(ImTextureID_Invalid);
+        }
+        break;
+    }
+}
+
+void ImGui_ImplRaylib_RenderDrawData(ImDrawData* draw_data)
+{
+    if (draw_data->Textures != nullptr)
+    {
+        for (ImTextureData* tex : *draw_data->Textures)
+        {
+            if (tex->Status != ImTextureStatus_OK)
+                ImGui_ImplRaylib_UpdateTexture(tex);
+        }
+    }
+
+    rlDrawRenderBatchActive();
+    rlDisableBackfaceCulling();
+
+    for (int l = 0; l < draw_data->CmdLists.Size; ++l)
+    {
+        const ImDrawList* commandList = draw_data->CmdLists[l];
+
+        for (const auto& cmd : commandList->CmdBuffer)
+        {
+            EnableScissor(cmd.ClipRect.x - draw_data->DisplayPos.x, cmd.ClipRect.y - draw_data->DisplayPos.y, cmd.ClipRect.z - (cmd.ClipRect.x - draw_data->DisplayPos.x), cmd.ClipRect.w - (cmd.ClipRect.y - draw_data->DisplayPos.y));
+            if (cmd.UserCallback != nullptr)
+			{
+				rlSetTexture(0); // force the texture state to the default since we don't know what the user callback will do with it
+                cmd.UserCallback(commandList, &cmd);
+            }
+            else
+            {
+                ImGuiRenderTriangles(cmd.ElemCount, cmd.IdxOffset, commandList->IdxBuffer, commandList->VtxBuffer, cmd.GetTexID());
+            }
+            rlDrawRenderBatchActive();
+        }
+    }
+
+    rlSetTexture(0);
+    rlDisableScissorTest();
+    rlEnableBackfaceCulling();
+}
+
+void HandleGamepadButtonEvent(ImGuiIO& io, GamepadButton button, ImGuiKey key)
+{
+    if (IsGamepadButtonPressed(0, button))
+        io.AddKeyEvent(key, true);
+    else if (IsGamepadButtonReleased(0, button))
+        io.AddKeyEvent(key, false);
+}
+
+void HandleGamepadStickEvent(ImGuiIO& io, GamepadAxis axis, ImGuiKey negKey, ImGuiKey posKey)
+{
+    constexpr float deadZone = 0.20f;
+
+    float axisValue = GetGamepadAxisMovement(0, axis);
+
+    io.AddKeyAnalogEvent(negKey, axisValue < -deadZone, axisValue < -deadZone ? -axisValue : 0);
+    io.AddKeyAnalogEvent(posKey, axisValue > deadZone, axisValue > deadZone ? axisValue : 0);
+}
+
+bool ImGui_ImplRaylib_ProcessEvents(void)
+{
+    ImGuiIO& io = ImGui::GetIO();
+
+    bool focused = IsWindowFocused();
+    if (focused != LastFrameFocused)
+        io.AddFocusEvent(focused);
+    LastFrameFocused = focused;
+
+    // handle the modifyer key events so that shortcuts work
+    bool ctrlDown = rlImGuiIsControlDown();
+    if (ctrlDown != LastControlPressed)
+        io.AddKeyEvent(ImGuiMod_Ctrl, ctrlDown);
+    LastControlPressed = ctrlDown;
+
+    bool shiftDown = rlImGuiIsShiftDown();
+    if (shiftDown != LastShiftPressed)
+        io.AddKeyEvent(ImGuiMod_Shift, shiftDown);
+    LastShiftPressed = shiftDown;
+
+    bool altDown = rlImGuiIsAltDown();
+    if (altDown != LastAltPressed)
+        io.AddKeyEvent(ImGuiMod_Alt, altDown);
+    LastAltPressed = altDown;
+
+    bool superDown = rlImGuiIsSuperDown();
+    if (superDown != LastSuperPressed)
+        io.AddKeyEvent(ImGuiMod_Super, superDown);
+    LastSuperPressed = superDown;
+
+    // walk the keymap and check for up and down events
+	for (int keyItr = 0; keyItr < MAX_RAYLIB_KEY; keyItr++)
+    {
+        const auto key = RaylibKeyMap[keyItr];
+
+        if (key == 0)
+            continue;
+
+        if (IsKeyReleased(keyItr))
+            io.AddKeyEvent(key, false);
+        else if(IsKeyPressed(keyItr))
+            io.AddKeyEvent(key, true);
+    }
+
+    if (io.WantCaptureKeyboard)
+    {
+        // add the text input in order
+        unsigned int pressed = GetCharPressed();
+        while (pressed != 0)
+        {
+            io.AddInputCharacter(pressed);
+            pressed = GetCharPressed();
+        }
+    }
+
+    bool processsMouse = focused;
+
+#if defined(RLIMGUI_ALWAYS_TRACK_MOUSE)
+    processsMouse = true;
+#endif
+
+    if (processsMouse)
+    {
+        if (!io.WantSetMousePos)
+        {
+            io.AddMousePosEvent(float(GetMouseX()), float(GetMouseY()));
+        }
+
+        auto setMouseEvent = [&io](int rayMouse, int imGuiMouse)
+            {
+                if (IsMouseButtonPressed(rayMouse))
+                    io.AddMouseButtonEvent(imGuiMouse, true);
+                else if (IsMouseButtonReleased(rayMouse))
+                    io.AddMouseButtonEvent(imGuiMouse, false);
+            };
+
+        setMouseEvent(MOUSE_BUTTON_LEFT, ImGuiMouseButton_Left);
+        setMouseEvent(MOUSE_BUTTON_RIGHT, ImGuiMouseButton_Right);
+        setMouseEvent(MOUSE_BUTTON_MIDDLE, ImGuiMouseButton_Middle);
+        setMouseEvent(MOUSE_BUTTON_FORWARD, ImGuiMouseButton_Middle + 1);
+        setMouseEvent(MOUSE_BUTTON_BACK, ImGuiMouseButton_Middle + 2);
+
+        {
+            Vector2 mouseWheel = GetMouseWheelMoveV();
+            io.AddMouseWheelEvent(mouseWheel.x, mouseWheel.y);
+        }
+    }
+    else
+    {
+        io.AddMousePosEvent(std::numeric_limits<float>::min(), std::numeric_limits<float>::min());
+    }
+
+    if (io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad && IsGamepadAvailable(0))
+    {
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_LEFT_FACE_UP, ImGuiKey_GamepadDpadUp);
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_LEFT_FACE_RIGHT, ImGuiKey_GamepadDpadRight);
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_LEFT_FACE_DOWN, ImGuiKey_GamepadDpadDown);
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_LEFT_FACE_LEFT, ImGuiKey_GamepadDpadLeft);
+
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_RIGHT_FACE_UP, ImGuiKey_GamepadFaceUp);
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_RIGHT_FACE_RIGHT, ImGuiKey_GamepadFaceLeft);
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_RIGHT_FACE_DOWN, ImGuiKey_GamepadFaceDown);
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_RIGHT_FACE_LEFT, ImGuiKey_GamepadFaceRight);
+
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_LEFT_TRIGGER_1, ImGuiKey_GamepadL1);
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_LEFT_TRIGGER_2, ImGuiKey_GamepadL2);
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_RIGHT_TRIGGER_1, ImGuiKey_GamepadR1);
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_RIGHT_TRIGGER_2, ImGuiKey_GamepadR2);
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_LEFT_THUMB, ImGuiKey_GamepadL3);
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_RIGHT_THUMB, ImGuiKey_GamepadR3);
+
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_MIDDLE_LEFT, ImGuiKey_GamepadStart);
+        HandleGamepadButtonEvent(io, GAMEPAD_BUTTON_MIDDLE_RIGHT, ImGuiKey_GamepadBack);
+
+        // left stick
+        HandleGamepadStickEvent(io, GAMEPAD_AXIS_LEFT_X, ImGuiKey_GamepadLStickLeft, ImGuiKey_GamepadLStickRight);
+        HandleGamepadStickEvent(io, GAMEPAD_AXIS_LEFT_Y, ImGuiKey_GamepadLStickUp, ImGuiKey_GamepadLStickDown);
+
+        // right stick
+        HandleGamepadStickEvent(io, GAMEPAD_AXIS_RIGHT_X, ImGuiKey_GamepadRStickLeft, ImGuiKey_GamepadRStickRight);
+        HandleGamepadStickEvent(io, GAMEPAD_AXIS_RIGHT_Y, ImGuiKey_GamepadRStickUp, ImGuiKey_GamepadRStickDown);
+    }
+
+    return true;
+}

vendor/rlImGui/rlImGui.h

@@ -0,0 +1,201 @@
+/**********************************************************************************************
+*
+*   raylibExtras * Utilities and Shared Components for Raylib
+*
+*   rlImGui * basic ImGui integration
+*
+*   LICENSE: ZLIB
+*   Copyright (c) 2020-2021 Jeffery Myers
+*
+*   This software is provided "as-is", without any express or implied warranty. In no event
+*   will the authors be held liable for any damages arising from the use of this software.
+*
+*   Permission is granted to anyone to use this software for any purpose, including commercial
+*   applications, and to alter it and redistribute it freely, subject to the following restrictions:
+*
+*     1. The origin of this software must not be misrepresented; you must not claim that you
+*     wrote the original software. If you use this software in a product, an acknowledgment
+*     in the product documentation would be appreciated but is not required.
+*
+*     2. Altered source versions must be plainly marked as such, and must not be misrepresented
+*     as being the original software.
+*
+*     3. This notice may not be removed or altered from any source distribution.
+*
+
+*
+**********************************************************************************************/
+
+#pragma once
+
+#include "raylib.h"
+
+// Function specifiers in case library is build/used as a shared library
+// NOTE: Microsoft specifiers to tell compiler that symbols are imported/exported from a .dll
+// NOTE: visibility("default") attribute makes symbols "visible" when compiled with -fvisibility=hidden
+#if defined(_WIN32)
+#if defined(__TINYC__)
+#define __declspec(x) __attribute__((x))
+#endif
+#if defined(BUILD_LIBTYPE_SHARED)
+#define RLIMGUIAPI __declspec(dllexport)     // We are building the library as a Win32 shared library (.dll)
+#elif defined(USE_LIBTYPE_SHARED)
+#define RLIMGUIAPI __declspec(dllimport)     // We are using the library as a Win32 shared library (.dll)
+#endif
+#else
+#if defined(BUILD_LIBTYPE_SHARED)
+#define RLIMGUIAPI __attribute__((visibility("default"))) // We are building as a Unix shared library (.so/.dylib)
+#endif
+#endif
+
+#ifndef RLIMGUIAPI
+#define RLIMGUIAPI       // Functions defined as 'extern' by default (implicit specifiers)
+#endif
+
+#ifndef NO_FONT_AWESOME
+#include "extras/IconsFontAwesome6.h"
+#ifndef FONT_AWESOME_ICON_SIZE
+#define FONT_AWESOME_ICON_SIZE 11
+#endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// High level API. This API is designed in the style of raylib and meant to work with reaylib code.
+// It will manage it's own ImGui context and call common ImGui functions (like NewFrame and Render) for you
+// for a lower level API that matches the other ImGui platforms, please see imgui_impl_raylib.h
+
+/// <summary>
+/// Sets up ImGui, loads fonts and themes
+/// Calls ImGui_ImplRaylib_Init and sets the theme. Will install Font awesome by default
+/// </summary>
+/// <param name="darkTheme">when true(default) the dark theme is used, when false the light theme is used</param>
+RLIMGUIAPI void rlImGuiSetup(bool darkTheme);
+
+/// <summary>
+/// Starts a new ImGui Frame
+/// Calls ImGui_ImplRaylib_NewFrame, ImGui_ImplRaylib_ProcessEvents, and ImGui::NewFrame together
+/// </summary>
+RLIMGUIAPI void rlImGuiBegin(void);
+
+/// <summary>
+/// Ends an ImGui frame and submits all ImGui drawing to raylib for processing.
+/// Calls ImGui:Render, an d ImGui_ImplRaylib_RenderDrawData to draw to the current raylib render target
+/// </summary>
+RLIMGUIAPI void rlImGuiEnd(void);
+
+/// <summary>
+/// Cleanup ImGui and unload font atlas
+/// Calls ImGui_ImplRaylib_Shutdown
+/// </summary>
+RLIMGUIAPI void rlImGuiShutdown(void);
+
+// Advanced StartupAPI
+
+/// <summary>
+/// Custom initialization. Not needed if you call rlImGuiSetup. Only needed if you want to add custom setup code.
+/// must be followed by rlImGuiEndInitImGui
+/// Called by ImGui_ImplRaylib_Init, and does the first part of setup, before fonts are rendered
+/// </summary>
+RLIMGUIAPI void rlImGuiBeginInitImGui(void);
+
+/// <summary>
+/// End Custom initialization. Not needed if you call rlImGuiSetup. Only needed if you want to add custom setup code.
+/// must be proceeded by rlImGuiBeginInitImGui
+/// Called by ImGui_ImplRaylib_Init and does the second part of setup, and renders fonts.
+/// </summary>
+RLIMGUIAPI void rlImGuiEndInitImGui(void);
+
+// Advanced Update API
+
+/// <summary>
+/// Starts a new ImGui Frame with a specified delta time
+/// </summary>
+/// <param name="dt">delta time, any value < 0 will use raylib GetFrameTime</param>
+RLIMGUIAPI void rlImGuiBeginDelta(float deltaTime);
+
+// ImGui Image API extensions
+// Purely for convenience in working with raylib textures as images.
+// If you want to call ImGui image functions directly, simply pass them the pointer to the texture.
+
+/// <summary>
+/// Draw a texture as an image in an ImGui Context
+/// Uses the current ImGui Cursor position and the full texture size.
+/// </summary>
+/// <param name="image">The raylib texture to draw</param>
+RLIMGUIAPI void rlImGuiImage(const Texture *image);
+
+/// <summary>
+/// Draw a texture as an image in an ImGui Context at a specific size
+/// Uses the current ImGui Cursor position and the specified width and height
+/// The image will be scaled up or down to fit as needed
+/// </summary>
+/// <param name="image">The raylib texture to draw</param>
+/// <param name="width">The width of the drawn image</param>
+/// <param name="height">The height of the drawn image</param>
+RLIMGUIAPI void rlImGuiImageSize(const Texture *image, int width, int height);
+
+/// <summary>
+/// Draw a texture as an image in an ImGui Context at a specific size
+/// Uses the current ImGui Cursor position and the specified size
+/// The image will be scaled up or down to fit as needed
+/// </summary>
+/// <param name="image">The raylib texture to draw</param>
+/// <param name="size">The size of drawn image</param>
+RLIMGUIAPI void rlImGuiImageSizeV(const Texture* image, Vector2 size);
+
+/// <summary>
+/// Draw a portion texture as an image in an ImGui Context at a defined size
+/// Uses the current ImGui Cursor position and the specified size
+/// The image will be scaled up or down to fit as needed
+/// </summary>
+/// <param name="image">The raylib texture to draw</param>
+/// <param name="destWidth">The width of the drawn image</param>
+/// <param name="destHeight">The height of the drawn image</param>
+/// <param name="sourceRect">The portion of the texture to draw as an image. Negative values for the width and height will flip the image</param>
+RLIMGUIAPI void rlImGuiImageRect(const Texture* image, int destWidth, int destHeight, Rectangle sourceRect);
+
+/// <summary>
+/// Draws a render texture as an image an ImGui Context, automatically flipping the Y axis so it will show correctly on screen
+/// </summary>
+/// <param name="image">The render texture to draw</param>
+RLIMGUIAPI void rlImGuiImageRenderTexture(const RenderTexture* image);
+
+/// <summary>
+/// Draws a render texture as an image an ImGui Context, automatically flipping the Y axis so it will show correctly on screen
+/// Fits the render texture to the available content area
+/// </summary>
+/// <param name="image">The render texture to draw</param>
+/// <param name="center">When true the image will be centered in the content area</param>
+RLIMGUIAPI void rlImGuiImageRenderTextureFit(const RenderTexture* image, bool center);
+
+/// <summary>
+/// Draws a texture as an image button in an ImGui context. Uses the current ImGui cursor position and the full size of the texture
+/// </summary>
+/// <param name="name">The display name and ImGui ID for the button</param>
+/// <param name="image">The texture to draw</param>
+/// <returns>True if the button was clicked</returns>
+bool rlImGuiImageButton(const char* name, const Texture* image);
+
+/// <summary>
+/// Draws a texture as an image button in an ImGui context. Uses the current ImGui cursor position and the specified size.
+/// </summary>
+/// <param name="name">The display name and ImGui ID for the button</param>
+/// <param name="image">The texture to draw</param>
+/// <param name="size">The size of the button</param>
+/// <returns>True if the button was clicked</returns>
+RLIMGUIAPI bool rlImGuiImageButtonSize(const char* name, const Texture* image, Vector2 size);
+
+/// <summary>
+/// installs a callback that will be called by rlImGuiSetup to load fonts.
+/// Use this if you want to load custom fonts or change font options.
+/// If the callback is installed, no default fonts will be loaded, you are responsible for loading all fonts
+/// </summary>
+/// <param name="callback">The callback to be called</param>
+RLIMGUIAPI void rlImGuiSetLoadFontsCallback(void(*callback)());
+
+#ifdef __cplusplus
+}
+#endif

vendor/rlImGui/rlImGuiColors.h

@@ -0,0 +1,45 @@
+/**********************************************************************************************
+*
+*   raylibExtras * Utilities and Shared Components for Raylib
+*
+*   rlImGui * basic ImGui integration
+*
+*   LICENSE: ZLIB
+*   Copyright (c) 2020-2021 Jeffery Myers
+*
+*   This software is provided "as-is", without any express or implied warranty. In no event
+*   will the authors be held liable for any damages arising from the use of this software.
+*
+*   Permission is granted to anyone to use this software for any purpose, including commercial
+*   applications, and to alter it and redistribute it freely, subject to the following restrictions:
+*
+*     1. The origin of this software must not be misrepresented; you must not claim that you
+*     wrote the original software. If you use this software in a product, an acknowledgment
+*     in the product documentation would be appreciated but is not required.
+*
+*     2. Altered source versions must be plainly marked as such, and must not be misrepresented
+*     as being the original software.
+*
+*     3. This notice may not be removed or altered from any source distribution.
+*
+
+*
+**********************************************************************************************/
+
+#pragma once
+
+#include "raylib.h"
+#include "imgui.h"
+
+namespace rlImGuiColors
+{
+    inline ImVec4 Convert(::Color color)
+    {
+        return ImVec4(color.r / 255.0f, color.g / 255.0f, color.b / 255.0f, color.a / 255.0f);
+    }
+
+    inline ::Color Convert(ImVec4 color)
+    {
+        return ::Color{ (unsigned char)(color.x * 255.0f), (unsigned char)(color.y * 255.0f), (unsigned char)(color.z * 255.0f), (unsigned char)(color.w * 255.0f) };
+    }
+}