From 678795b7930b5944a87d6c9193d1842f7402356f Mon Sep 17 00:00:00 2001
From: Patedam <pgillen.pro@gmail.com>
Date: Sun, 16 Aug 2026 22:44:52 -0400
Subject: [PATCH] calloc to arena

---
 Juliet/include/Graphics/DebugDisplay.h            | 2 +-
 Juliet/src/Engine/Engine.cpp                      | 3 +--
 Juliet/src/Graphics/D3D12/D3D12GraphicsDevice.cpp | 2 +-
 Juliet/src/Graphics/DebugDisplayRenderer.cpp      | 8 +++-----
 4 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/Juliet/include/Graphics/DebugDisplay.h b/Juliet/include/Graphics/DebugDisplay.h
index 216ae21..951745b 100644
--- a/Juliet/include/Graphics/DebugDisplay.h
+++ b/Juliet/include/Graphics/DebugDisplay.h
@@ -8,7 +8,7 @@
 
 namespace Juliet
 {
-    extern JULIET_API void DebugDisplay_Initialize(GraphicsDevice* device);
+    extern JULIET_API void DebugDisplay_Initialize(NonNullPtr<Arena> arena, GraphicsDevice* device);
     extern JULIET_API void DebugDisplay_Shutdown(GraphicsDevice* device);
     extern JULIET_API void DebugDisplay_DrawLine(const Vector3& start, const Vector3& end, const FColor& color, bool overlay);
     extern JULIET_API void DebugDisplay_DrawSphere(const Vector3& center, float radius, const FColor& color, bool overlay);
diff --git a/Juliet/src/Engine/Engine.cpp b/Juliet/src/Engine/Engine.cpp
index 370da57..a3ef1a8 100644
--- a/Juliet/src/Engine/Engine.cpp
+++ b/Juliet/src/Engine/Engine.cpp
@@ -37,10 +37,9 @@ namespace Juliet
         {
             GraphicsDevice* device = EngineInstance.Application->GetGraphicsDevice();
 
-            // DebugDisplay system
             if (device)
             {
-                DebugDisplay_Initialize(device);
+                DebugDisplay_Initialize(EngineInstance.PlatformArena, device);
                 if (Window* window = EngineInstance.Application->GetPlatformWindow())
                 {
                     bool success = InitializeMeshRendererGraphics(device, window);
diff --git a/Juliet/src/Graphics/D3D12/D3D12GraphicsDevice.cpp b/Juliet/src/Graphics/D3D12/D3D12GraphicsDevice.cpp
index 0e3f07c..c77c1e6 100644
--- a/Juliet/src/Graphics/D3D12/D3D12GraphicsDevice.cpp
+++ b/Juliet/src/Graphics/D3D12/D3D12GraphicsDevice.cpp
@@ -4618,7 +4618,7 @@ namespace Juliet
             driver->Semantic       = WrapString("TEXCOORD");
             driver->FramesInFlight = 2;
 
-            auto device = static_cast<GraphicsDevice*>(Calloc(1, sizeof(GraphicsDevice)));
+            GraphicsDevice* device = ArenaPushStruct<GraphicsDevice>(driverArena JULIET_DEBUG_PARAM("GraphicsDevice"));
             if (!device)
             {
                 DestroyDriver_Internal(driver);
diff --git a/Juliet/src/Graphics/DebugDisplayRenderer.cpp b/Juliet/src/Graphics/DebugDisplayRenderer.cpp
index ecd9183..217c92d 100644
--- a/Juliet/src/Graphics/DebugDisplayRenderer.cpp
+++ b/Juliet/src/Graphics/DebugDisplayRenderer.cpp
@@ -3,7 +3,6 @@
 #include <Core/HAL/Filesystem/Filesystem.h>
 #include <Core/Logging/LogManager.h>
 #include <Core/Logging/LogTypes.h>
-#include <Core/Memory/Allocator.h>
 #include <Core/Thread/ThreadContext.h>
 #include <Graphics/GraphicsPipeline.h>
 #include <Graphics/PushConstants.h>
@@ -157,7 +156,7 @@ namespace Juliet
         }
     } // namespace
 
-    void DebugDisplay_Initialize(GraphicsDevice* device)
+    void DebugDisplay_Initialize(NonNullPtr<Arena> arena, GraphicsDevice* device)
     {
         if (g_DebugState.Initialized)
         {
@@ -167,7 +166,8 @@ namespace Juliet
         g_DebugState.Device = device;
 
         // Allocate single CPU vertex array (depth-tested in first half, overlay in second half)
-        g_DebugState.Vertices = static_cast<DebugVertex*>(Malloc(kMaxDebugVertices * sizeof(DebugVertex)));
+        g_DebugState.Vertices =
+            ArenaPushArray<DebugVertex>(arena, kMaxDebugVertices JULIET_DEBUG_PARAM("Debug Display Renderer Vertices"));
         g_DebugState.DepthTestedVertexCount = 0;
         g_DebugState.OverlayVertexCount     = 0;
 
@@ -212,8 +212,6 @@ namespace Juliet
             DestroyGraphicsTransferBuffer(device, g_DebugState.TransferBuffer);
         }
 
-        SafeFree(g_DebugState.Vertices);
-
         g_DebugState = {};
     }