Various debug to check lighting

F1 to have free camera

.gitignore

@@ -13,6 +13,7 @@
 .idea/
 .vs/
 [Ii]ntermediate/
+[sS]hip/
 
 # Logs
 build_*.txt
@@ -51,3 +52,5 @@ launch_*.txt
 *.out
 *.app
 
+misc/agent_error.log
+misc/agent_output_ship.log

AgentData/lighting_and_skybox_plan.md

@@ -0,0 +1,292 @@
+# Lighting & Skybox Plan
+
+## Current State
+
+| Item | Current |
+|------|---------|
+| Vertex format | `float3 Position` + `float4 Color` (28 bytes, no normals) |
+| Vertex shader | [Triangle.vert.hlsl](file:///w:/Classified/Juliet/Assets/source/Triangle.vert.hlsl) — bindless buffer read, `mul(VP, mul(Model, pos))` |
+| Fragment shader | [SolidColor.frag.hlsl](file:///w:/Classified/Juliet/Assets/source/SolidColor.frag.hlsl) — passthrough `return Color` |
+| Push constants | `ViewProjection` + `Model` + `BufferIndex` + extras |
+| Texturing | None — no sampler usage, no texture reads |
+
+---
+
+## Phase 1: Add Normals to Vertex Data
+
+Lighting requires normals. This is the foundation for everything else.
+
+### Vertex Format Change
+
+```diff
+ struct Vertex
+ {
+     float Position[3];
++    float Normal[3];
+     float Color[4];
+ };
+```
+
+- **Stride**: 28 → 40 bytes
+- Update `Triangle.vert.hlsl` stride constant: `uint stride = 40;`
+- Load normal after position: `float3 normal = asfloat(buffer.Load3(offset + 12));`
+- Load color shifts to: `float4 col = asfloat(buffer.Load4(offset + 24));`
+
+### Files to modify
+
+| File | Change |
+|------|--------|
+| [VertexData.h](file:///w:/Classified/Juliet/Juliet/include/Graphics/VertexData.h) | Add `float Normal[3]` to `Vertex` |
+| [MeshRenderer.cpp](file:///w:/Classified/Juliet/Juliet/src/Graphics/MeshRenderer.cpp) | Update `AddCube()` to include per-face normals |
+| [Triangle.vert.hlsl](file:///w:/Classified/Juliet/Assets/source/Triangle.vert.hlsl) | Update stride, load normal, pass to fragment |
+
+---
+
+## Phase 2: Basic Directional Light (Diffuse)
+
+Simple single directional light with diffuse (Lambert) shading.
+
+### Approach: Push light data through RootConstants
+
+Add light direction and color to `RootConstants.hlsl` and the C++ `PushData`:
+
+```hlsl
+// RootConstants.hlsl additions
+float3   LightDirection;  // Normalized, world-space
+float    _LightPad;
+float3   LightColor;
+float    AmbientIntensity;
+```
+
+```cpp
+// PushData additions
+Vector3 LightDirection;
+float   _LightPad;
+Vector3 LightColor;
+float   AmbientIntensity;
+```
+
+### Shader Changes
+
+**Vertex shader** — transform normal to world space and pass it to fragment:
+
+```hlsl
+// Triangle.vert.hlsl output struct
+struct Output
+{
+    float4 Color    : TEXCOORD0;
+    float3 WorldNormal : TEXCOORD1;
+    float4 Position : SV_Position;
+};
+
+// In main():
+float3 worldNormal = mul((float3x3)Model, normal);
+output.WorldNormal = worldNormal;
+```
+
+> [!NOTE]
+> Using `(float3x3)Model` for normal transform is only correct for uniform-scale transforms. For non-uniform scale, you'd need the inverse-transpose. Fine for now with translation-only transforms.
+
+**Fragment shader** — apply Lambert diffuse:
+
+```hlsl
+// SolidColor.frag.hlsl → rename to Lit.frag.hlsl
+#include "RootConstants.hlsl"
+
+float4 main(float4 Color : TEXCOORD0, float3 WorldNormal : TEXCOORD1) : SV_Target0
+{
+    float3 N = normalize(WorldNormal);
+    float  NdotL = saturate(dot(N, -LightDirection));
+    float3 diffuse = Color.rgb * LightColor * NdotL;
+    float3 ambient = Color.rgb * AmbientIntensity;
+    return float4(diffuse + ambient, Color.a);
+}
+```
+
+### Files to modify
+
+| File | Change |
+|------|--------|
+| [RootConstants.hlsl](file:///w:/Classified/Juliet/Assets/source/RootConstants.hlsl) | Add light params |
+| [MeshRenderer.h](file:///w:/Classified/Juliet/Juliet/include/Graphics/MeshRenderer.h) | Add light params to `PushData` |
+| [Triangle.vert.hlsl](file:///w:/Classified/Juliet/Assets/source/Triangle.vert.hlsl) | Pass world normal to fragment |
+| [SolidColor.frag.hlsl](file:///w:/Classified/Juliet/Assets/source/SolidColor.frag.hlsl) | Lambert diffuse + ambient |
+| [DebugDisplayRenderer.cpp](file:///w:/Classified/Juliet/Juliet/src/Graphics/DebugDisplayRenderer.cpp) | Update push data struct to match new layout |
+| [main.cpp](file:///w:/Classified/Juliet/JulietApp/main.cpp) | Set `LightDirection`, `LightColor`, `AmbientIntensity` |
+
+---
+
+## Phase 3: Skybox
+
+A skybox renders a cubemap texture behind all geometry, giving the scene a background.
+
+### Approach: Fullscreen-triangle with inverse VP
+
+Render a fullscreen triangle as the very last thing (or first with depth write off), sample a cubemap using the camera view direction reconstructed from screen coordinates.
+
+### New Assets
+
+- **Skybox cubemap texture** — a `.dds` or 6 `.png` face images loaded as a `TextureCube`
+- **New shaders**: `Skybox.vert.hlsl` + `Skybox.frag.hlsl`
+
+### Shader Design
+
+**Vertex shader** — fullscreen triangle using `SV_VertexID`:
+
+```hlsl
+// Skybox.vert.hlsl
+#include "RootConstants.hlsl"
+
+struct Output
+{
+    float3 ViewDir  : TEXCOORD0;
+    float4 Position : SV_Position;
+};
+
+Output main(uint vertexID : SV_VertexID)
+{
+    Output output;
+
+    // Fullscreen triangle
+    float2 uv = float2((vertexID << 1) & 2, vertexID & 2);
+    float4 clipPos = float4(uv * 2.0 - 1.0, 1.0, 1.0);
+    clipPos.y = -clipPos.y;
+
+    output.Position = clipPos;
+
+    // Reconstruct view direction from clip space
+    // InverseViewProjection needs to be added to RootConstants
+    float4 worldPos = mul(InverseViewProjection, clipPos);
+    output.ViewDir = worldPos.xyz / worldPos.w;
+
+    return output;
+}
+```
+
+**Fragment shader** — sample cubemap:
+
+```hlsl
+// Skybox.frag.hlsl
+#include "RootConstants.hlsl"
+
+float4 main(float3 ViewDir : TEXCOORD0) : SV_Target0
+{
+    TextureCube skybox = ResourceDescriptorHeap[TextureIndex];
+    SamplerState samp = SamplerDescriptorHeap[0]; // Linear clamp
+    return skybox.Sample(samp, normalize(ViewDir));
+}
+```
+
+### Pipeline Requirements
+
+| Setting | Value |
+|---------|-------|
+| Depth write | **Off** (skybox is infinitely far) |
+| Depth test | **LessEqual** or **Off** (render behind everything) |
+| Cull mode | **None** (fullscreen triangle) |
+| Draw call | `Draw(3, 0)` — no vertex buffer needed |
+
+### New C++ Components
+
+1. **Cubemap loading** — need to create `TextureCube` from 6 face images or a `.dds` cubemap file
+2. **Skybox pipeline** — new `GraphicsPipeline` with the skybox shaders and the pipeline settings above
+3. **Sampler** — need at least one linear sampler in the sampler heap (may already exist for ImGui)
+4. **`InverseViewProjection`** — add to `RootConstants` and compute in C++ via a `MatrixInverse` function
+
+> [!IMPORTANT]
+> `MatrixInverse` needs to be implemented in `Matrix.h`. This is a non-trivial 4×4 matrix inversion (adjugate/determinant method or Gauss-Jordan).
+
+### Files to modify/create
+
+| File | Change |
+|------|--------|
+| [NEW] `Skybox.vert.hlsl` | Fullscreen triangle + view direction |
+| [NEW] `Skybox.frag.hlsl` | Cubemap sample |
+| [RootConstants.hlsl](file:///w:/Classified/Juliet/Assets/source/RootConstants.hlsl) | Add `InverseViewProjection` |
+| [Matrix.h](file:///w:/Classified/Juliet/Juliet/include/Core/Math/Matrix.h) | Add `MatrixInverse()` |
+| [MeshRenderer.h](file:///w:/Classified/Juliet/Juliet/include/Graphics/MeshRenderer.h) | Add `InverseViewProjection` to `PushData` |
+| [main.cpp](file:///w:/Classified/Juliet/JulietApp/main.cpp) | Create skybox pipeline, load cubemap, render skybox |
+
+---
+
+## Recommended Implementation Order
+
+```mermaid
+graph LR
+    A["Phase 1<br/>Add Normals"] --> B["Phase 2<br/>Directional Light"]
+    B --> C["Phase 3<br/>Skybox"]
+```
+
+1. **Phase 1** (normals) is the smallest and unblocks Phase 2
+2. **Phase 2** (lighting) gives the cubes visible 3D depth immediately
+3. **Phase 3** (skybox) is independent of lighting but benefits from having `MatrixInverse` and sampler infrastructure
+
+> [!TIP]
+> Phases 1+2 together are a single session of work (~8 files). Phase 3 is larger due to cubemap loading and new pipeline creation.
+
+---
+
+## Open Questions (Answered)
+
+1. **Cubemap source** — **Procedural gradient skybox** chosen because asset loading infrastructure is not yet established.
+2. **Sampler heap** — Evaluate what exists. However, with a procedural skybox, we won't need a sampler for Phase 3! (The sky color can be procedurally generated from the reconstructed view direction).
+3. **Specular** — **Blinn-Phong** specular, structured in an agnostic way so PBR (physically based rendering) parameters can be plugged in later.
+
+---
+
+## Phase 4: Forward Rendered Entity Lights
+
+A simple, fast forward renderer using a Global Structured Buffer for entity-based point lights.
+
+### Approach: Bindless Global Lights Buffer
+
+Instead of passing each light via PushConstants, we pass a `StructuredBuffer<PointLight>` index and iterate over the active lights in the fragment shader.
+
+### New C++ Components
+
+```cpp
+struct PointLight
+{
+    Vector3 Position;
+    float   Radius;
+    Vector3 Color;
+    float   Intensity;
+};
+```
+
+1. **Lights Buffer Allocation**: Allocate a `StructuredBuffer` large enough for all potential lights (e.g., max 1024).
+2. **Buffer Upload**: Loop through the active game entity lights every frame and upload them using the TransferBuffer system.
+3. **PushData Update**:
+   - `uint32 LightsBufferIndex`
+   - `uint32 ActiveLightCount`
+
+### Shader Design
+
+**Fragment Shader Expansion** loop over all `ActiveLightCount` to compute the attenuation and diffuse, then accumulate.
+
+```hlsl
+StructuredBuffer<PointLight> lights = ResourceDescriptorHeap[LightsBufferIndex];
+
+float3 totalDiffuse = Color.rgb * LightColor * NdotL; // Include Directional Sun
+
+for (uint i = 0; i < ActiveLightCount; ++i)
+{
+    PointLight light = lights[i];
+    
+    float3 lightVector = light.Position - WorldPosition;
+    float distance = length(lightVector);
+    
+    if (distance > light.Radius) continue;
+    
+    float3 L = lightVector / distance;
+    float NdotL = saturate(dot(N, L));
+    
+    float attenuation = 1.0 - saturate(distance / light.Radius);
+    attenuation *= attenuation; // inverse square-ish 
+    
+    totalDiffuse += Color.rgb * light.Color * light.Intensity * NdotL * attenuation;
+}
+```
+
+> [!NOTE]
+> Passing `WorldPosition` to the Fragment shader from the Vertex shader is required for positional lighting.

Assets/source/Debug.vert.hlsl

@@ -13,8 +13,8 @@ Output main(uint vertexIndex : SV_VertexID)
     // Retrieve the vertex buffer using SM6.6 bindless syntax
     ByteAddressBuffer buffer = ResourceDescriptorHeap[BufferIndex];
 
-    // TextureIndex is used as vertex offset for consolidated buffer (depth-tested at 0, overlay at halfMax)
+    // VertexOffset is used as vertex offset for consolidated buffer (depth-tested at 0, overlay at halfMax)
-    uint actualVertexIndex = vertexIndex + TextureIndex;
+    uint actualVertexIndex = vertexIndex + VertexOffset;
 
     // Vertex layout: float3 Position (12 bytes) + float4 Color (16 bytes) = 28 bytes stride
     uint stride = 28;

Assets/source/RootConstants.hlsl

@@ -1,15 +1,39 @@
 #ifndef ROOT_CONSTANTS_HLSL
 #define ROOT_CONSTANTS_HLSL
  
+struct PointLight
+{
+    float3 Position;
+    float  Radius;
+    float3 Color;
+    float  Intensity;
+};
+
+struct TransformData
+{
+    row_major float4x4 Model;
+};
+
 cbuffer RootConstants : register(b0, space0)
 {
     row_major float4x4 ViewProjection;
+    uint     MeshIndex;
+    uint     TransformsBufferIndex;
     uint     BufferIndex;
     uint     TextureIndex;
     uint     VertexOffset; // Base vertex for indexed drawing with bindless buffers
     uint     _Padding;     // Padding for alignment
     float2   Scale;        // 2D scale factor
     float2   Translate;    // 2D translation
+    float2   _Padding2;    // Explicit padding to align LightDirection to 16 bytes
+    
+    float3   GlobalLightDirection;  // Normalized, world-space
+    float    GlobalLightPad;
+    float3   GlobalLightColor;
+    float    GlobalAmbientIntensity;
+
+    uint     LightBufferIndex;
+    uint     ActiveLightCount;
 };
 
 

Assets/source/Skybox.frag.hlsl

@@ -0,0 +1,26 @@
+#include "RootConstants.hlsl"
+
+float4 main(float3 ViewDir : TEXCOORD0) : SV_Target0
+{
+    float3 dir = normalize(ViewDir);
+    
+    // Simple Procedural Gradient Skybox Colors
+    float3 skyZenithColor = float3(0.05f, 0.15f, 0.45f); // Deep blue top
+    float3 skyHorizonColor = float3(0.4f, 0.6f, 0.9f); // Light blue horizon
+    float3 groundColor = float3(0.1f, 0.1f, 0.15f); // Dark ground
+    
+    float t = dir.z; // -1 to 1 based on vertical alignment
+    
+    float3 finalColor = groundColor;
+    
+    if (t > 0.0f) {
+        // Blend from horizon to zenith
+        finalColor = lerp(skyHorizonColor, skyZenithColor, t);
+    } else {
+        // Ground - quick blend from horizon to ground
+        finalColor = lerp(skyHorizonColor, groundColor, saturate(-t * 2.0f));
+    }
+    
+    // Combine with overall ambient lighting scale
+    return float4(finalColor, 1.0f);
+}

Assets/source/Skybox.vert.hlsl

@@ -0,0 +1,74 @@
+#include "RootConstants.hlsl"
+
+struct Output
+{
+    float3 ViewDir  : TEXCOORD0;
+    float4 Position : SV_Position;
+};
+
+float4x4 Inverse(float4x4 m)
+{
+    float n11 = m[0][0], n12 = m[1][0], n13 = m[2][0], n14 = m[3][0];
+    float n21 = m[0][1], n22 = m[1][1], n23 = m[2][1], n24 = m[3][1];
+    float n31 = m[0][2], n32 = m[1][2], n33 = m[2][2], n34 = m[3][2];
+    float n41 = m[0][3], n42 = m[1][3], n43 = m[2][3], n44 = m[3][3];
+
+    float t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44;
+    float t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44;
+    float t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44;
+    float t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;
+
+    float det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;
+    float idet = 1.0f / det;
+
+    float4x4 ret;
+    ret[0][0] = t11 * idet;
+    ret[0][1] = (n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44) * idet;
+    ret[0][2] = (n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44) * idet;
+    ret[0][3] = (n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43) * idet;
+
+    ret[1][0] = t12 * idet;
+    ret[1][1] = (n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44) * idet;
+    ret[1][2] = (n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44) * idet;
+    ret[1][3] = (n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43) * idet;
+
+    ret[2][0] = t13 * idet;
+    ret[2][1] = (n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44) * idet;
+    ret[2][2] = (n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44) * idet;
+    ret[2][3] = (n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43) * idet;
+
+    ret[3][0] = t14 * idet;
+    ret[3][1] = (n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34) * idet;
+    ret[3][2] = (n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34) * idet;
+    ret[3][3] = (n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33) * idet;
+
+    return ret;
+}
+
+Output main(uint vertexID : SV_VertexID)
+{
+    Output output;
+
+    // Fullscreen triangle properties
+    // vertexID 0 -> uv(0,0) -> pos(-1,  1)
+    // vertexID 1 -> uv(2,0) -> pos( 3,  1)
+    // vertexID 2 -> uv(0,2) -> pos(-1, -3)
+    float2 uv = float2((vertexID << 1) & 2, vertexID & 2);
+    
+    // Map uv to clip space position.
+    // Z is set to 1.0 (far plane in reverse-Z or standard depth)
+    // Assuming standard Z projection ranges from 0 to 1, we use 1.0 for the far plane. 
+    // Depending on reverse-z, this might need to be 0.0, but let's stick to standard 1.0 
+    // depth for skyboxes.
+    float4 clipPos = float4(uv * 2.0 - 1.0, 1.0, 1.0);
+    clipPos.y = -clipPos.y; // Flip Y for D3D
+
+    output.Position = clipPos;
+
+    // Reconstruct view direction from clip space
+    float4x4 inverseVP = Inverse(ViewProjection);
+    float4 worldPos = mul(inverseVP, clipPos);
+    output.ViewDir = worldPos.xyz / worldPos.w;
+
+    return output;
+}

Assets/source/SolidColor.frag.hlsl

@@ -1,4 +1,46 @@
-float4 main(float4 Color : TEXCOORD0) : SV_Target0
+#include "RootConstants.hlsl"
+
+struct Input
 {
-    return Color;
+    float4 Color         : TEXCOORD0;
+    float3 WorldNormal   : TEXCOORD1;
+    float3 WorldPosition : TEXCOORD2;
+};
+
+float4 main(Input input) : SV_Target0
+{
+    float3 normal = normalize(input.WorldNormal);
+
+    // Initial ambient component
+    float3 result = input.Color.rgb * GlobalLightColor * GlobalAmbientIntensity;
+
+    // Directional light contribution
+    float ndotl = max(dot(normal, -GlobalLightDirection), 0.0);
+    result += input.Color.rgb * GlobalLightColor * ndotl;
+
+    // Point lights
+    if (ActiveLightCount > 0)
+    {
+        StructuredBuffer<PointLight> pointLights = ResourceDescriptorHeap[LightBufferIndex];
+        
+        for (uint i = 0; i < ActiveLightCount; ++i)
+        {
+            PointLight light = pointLights[i];
+
+            float3 lightDir = light.Position - input.WorldPosition;
+            float  dist     = length(lightDir);
+            
+            if (dist < light.Radius)
+            {
+                lightDir = normalize(lightDir);
+                float attenuation = 1.0 - (dist / light.Radius);
+                attenuation = max(attenuation, 0.0);
+
+                float pndotl = max(dot(normal, lightDir), 0.0);
+                result += light.Color * input.Color.rgb * pndotl * attenuation * light.Intensity;
+            }
+        }
+    }
+
+    return float4(result, input.Color.a);
 }

Assets/source/Triangle.vert.hlsl

@@ -1,6 +1,8 @@
 struct Output
 {
     float4 Color : TEXCOORD0;
+    float3 WorldNormal : TEXCOORD1;
+    float3 WorldPosition : TEXCOORD2;
     float4 Position : SV_Position;
 };
 
@@ -12,14 +14,23 @@ Output main(uint vertexIndex : SV_VertexID)
 
     ByteAddressBuffer buffer = ResourceDescriptorHeap[BufferIndex];
 
-    uint stride = 28;
+    uint stride = 40;
     uint offset = vertexIndex * stride;
 
     float3 pos = asfloat(buffer.Load3(offset));
-    float4 col = asfloat(buffer.Load4(offset + 12));
+    float3 normal = asfloat(buffer.Load3(offset + 12));
+    float4 col = asfloat(buffer.Load4(offset + 24));
 
-    //output.Position = float4(pos, 1.0f);
+    // Fetch Model Matrix
-    output.Position = mul(ViewProjection, float4(pos, 1.0f));
+    StructuredBuffer<TransformData> transformsBuffer = ResourceDescriptorHeap[TransformsBufferIndex];
+    float4x4 Model = transformsBuffer[MeshIndex].Model;
+
+    float4 worldPos = mul(Model, float4(pos, 1.0f));
+    output.Position = mul(ViewProjection, worldPos);
     output.Color = col;
+    output.WorldPosition = worldPos.xyz;
+    
+    float3 worldNormal = mul((float3x3)Model, normal);
+    output.WorldNormal = worldNormal;
     return output;
 }

Juliet/Juliet.bff

@@ -47,8 +47,11 @@
         // --- DLL BUILD ---
         DLL( '$ProjectName$-Lib-$Platform$-$BuildConfigName$' )
         {
-            .Libraries      = { '$ProjectName$-Objs-$Platform$-$BuildConfigName$',
+            .Libraries      = { '$ProjectName$-Objs-$Platform$-$BuildConfigName$' }
-                                        'ImGui-Lib-$Platform$-$BuildConfigName$' }
+            If ( .BuildConfigName != 'Release' )
+            {
+                ^Libraries      + { 'ImGui-Lib-$Platform$-$BuildConfigName$' }
+            }
 
             .LinkerOutput   = '$BinPath$/$Platform$-$BuildConfigName$/$ProjectName$.dll' // Output .dll to Bin
             

Juliet/Juliet.vcxproj

@@ -227,6 +227,10 @@
     <CustomBuild Include="src\UnitTest\RunUnitTests.cpp" />
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="include\Graphics\MeshRenderer.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="src\Graphics\MeshRenderer.cpp" />
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <ProjectGuid>{ab9c7e88-6c94-4f93-bc2a-7f5284b7d434}</ProjectGuid>

Juliet/include/Core/Application/ApplicationManager.h

@@ -8,5 +8,6 @@ namespace Juliet
 {
     enum class JulietInit_Flags : uint8;
 
+    struct Arena;
     extern JULIET_API void StartApplication(IApplication& app, JulietInit_Flags flags);
 } // namespace Juliet

Juliet/include/Core/Application/IApplication.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <Core/Common/NonNullPtr.h>
+
 namespace Juliet
 {
     struct RenderPass;
@@ -7,12 +9,13 @@ namespace Juliet
     struct Texture;
     struct ColorTargetInfo;
     struct DepthStencilTargetInfo;
+    struct Arena;
 
     class IApplication
     {
       public:
         virtual ~IApplication()                    = default;
-        virtual void Init()      = 0;
+        virtual void Init(NonNullPtr<Arena> arena) = 0;
         virtual void Shutdown()                    = 0;
         virtual void Update()                      = 0;
         virtual bool IsRunning()                   = 0;

Juliet/include/Core/Container/Vector.h

@@ -98,6 +98,34 @@ namespace Juliet
             }
         }
 
+        void PushBack(const Type* buffer, size_t amount)
+        {
+            Assert(Arena);
+
+            if (Count + amount > Capacity)
+            {
+                if (Capacity == 0 && Count + amount < ReserveSize)
+                {
+                    Reserve(ReserveSize);
+                }
+                else
+                {
+                    size_t newCapacity = Max(Capacity * 2, AlignPow2(Capacity + amount, AlignOf(Type)));
+                    Reserve(newCapacity);
+                }
+            }
+
+            Type* dst = Data + Count;
+            MemCopy(dst, buffer, amount * sizeof(Type));
+
+            if (Count == 0)
+            {
+                DataFirst = dst;
+            }
+            DataLast = dst + amount;
+            Count += amount;
+        }
+
         void PushBack(const Type& value)
         {
             Assert(Arena);
@@ -165,13 +193,20 @@ namespace Juliet
         {
             Assert(Arena);
 
+            if (InternalArena)
+            {
                 ArenaClear(Arena);
-            DataFirst = DataLast = nullptr;
                 Data     = nullptr;
-            Count                = 0;
                 Capacity = 0;
+                Reserve(ReserveSize);
             }
 
+            DataFirst = DataLast = nullptr;
+            Count                = 0;
+        }
+
+        bool IsEmpty() const { return Count == 0; }
+
         // C++ Accessors for loop supports and Index based access
         Type&       operator[](size_t index) { return DataFirst[index]; }
         const Type& operator[](size_t index) const { return DataFirst[index]; }

Juliet/include/Core/HAL/Display/Display.h

@@ -2,6 +2,7 @@
 
 #include <Core/Common/CoreTypes.h>
 #include <Core/Common/NonNullPtr.h>
+#include <Core/Common/String.h>
 #include <Juliet.h>
 
 namespace Juliet
@@ -16,4 +17,5 @@ namespace Juliet
     extern JULIET_API void HideWindow(NonNullPtr<Window> window);
 
     extern JULIET_API WindowID GetWindowID(NonNullPtr<Window> window);
+    extern JULIET_API void SetWindowTitle(NonNullPtr<Window> window, String title);
 } // namespace Juliet

Juliet/include/Core/HAL/Filesystem/Filesystem.h

@@ -5,7 +5,16 @@
 namespace Juliet
 {
     // Returns the path to the application directory
-    extern JULIET_API String GetBasePath();
+    [[nodiscard]] extern JULIET_API String GetBasePath();
 
-    extern JULIET_API bool IsAbsolutePath(String path);
+    // Returns the resolved base path to the compiled shaders directory.
+    // In dev, this resolves to ../../Assets/compiled/ relative to the exe.
+    // In shipping, this resolves to Assets/Shaders/ next to the exe.
+     [[nodiscard]] extern JULIET_API String GetAssetBasePath();
+
+    // Builds a full path to an asset file given its filename (e.g. "Triangle.vert.dxil").
+    // The caller owns the returned buffer and must free it.
+    [[nodiscard]] extern JULIET_API String GetAssetPath(String filename);
+
+     [[nodiscard]]extern JULIET_API bool IsAbsolutePath(String path);
 } // namespace Juliet

Juliet/include/Core/HAL/OS/OS.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <Core/Common/CoreTypes.h>
+#include <Graphics/D3D12/D3D12Buffer.h>
 #include <Juliet.h>
 
 namespace Juliet
@@ -31,6 +32,11 @@ namespace Juliet
 
     } // namespace Memory
 
+    namespace Debug
+    {
+        JULIET_API bool IsDebuggerPresent();
+    } // namespace Debug
+
     using EntryPointFunc = int (*)(int, wchar_t**);
     JULIET_API int Bootstrap(EntryPointFunc entryPointFunc, int argc, wchar_t** argv);
 } // namespace Juliet

Juliet/include/Core/ImGui/ImGuiService.h

@@ -3,6 +3,8 @@
 #include <Core/Common/CoreTypes.h>
 #include <Core/Common/NonNullPtr.h>
 
+#ifdef JULIET_ENABLE_IMGUI
+
 struct ImGuiContext;
 
 namespace Juliet
@@ -25,3 +27,5 @@ namespace Juliet
         JULIET_API void RunTests();
     } // namespace ImGuiService
 } // namespace Juliet
+
+#endif // JULIET_ENABLE_IMGUI

Juliet/include/Core/Logging/LogManager.h

@@ -22,6 +22,7 @@ namespace Juliet
     extern void JULIET_API LogScopeEnd();
 
     extern void JULIET_API Log(LogLevel level, LogCategory category, const char* fmt, ...);
+    extern void JULIET_API LogDebug(LogCategory category, const char* fmt, ...);
     extern void JULIET_API LogMessage(LogCategory category, const char* fmt, ...);
     extern void JULIET_API LogWarning(LogCategory category, const char* fmt, ...);
     extern void JULIET_API LogError(LogCategory category, const char* fmt, ...);

Juliet/include/Core/Logging/LogTypes.h

@@ -4,9 +4,10 @@ namespace Juliet
 {
     enum class LogLevel : uint8
     {
-        Message = 0,
+        Debug   = 0,
-        Warning = 1,
+        Message = 1,
-        Error   = 2,
+        Warning = 2,
+        Error   = 3,
     };
 
     enum class LogCategory : uint8

Juliet/include/Core/Main.h

@@ -37,6 +37,7 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw)
     (void)hPrev;
     (void)szCmdLine;
     (void)sw;
+
     return Juliet::Bootstrap(JulietMain, __argc, __wargv);
 }
 }

Juliet/include/Core/Math/Matrix.h

@@ -8,8 +8,9 @@ namespace Juliet
     struct Matrix
     {
         float m[4][4];
+    };
 
-        static Matrix Identity()
+    [[nodiscard]] inline Matrix MatrixIdentity()
     {
         Matrix result = {};
         result.m[0][0] = 1.0f;
@@ -19,7 +20,7 @@ namespace Juliet
         return result;
     }
 
-        Matrix operator*(const Matrix& rhs) const
+    [[nodiscard]] inline Matrix operator*(const Matrix& lhs, const Matrix& rhs)
     {
         Matrix result = {};
         for (int i = 0; i < 4; ++i)
@@ -28,13 +29,78 @@ namespace Juliet
             {
                 for (int k = 0; k < 4; ++k)
                 {
-                        result.m[i][j] += m[i][k] * rhs.m[k][j];
+                    result.m[i][j] += lhs.m[i][k] * rhs.m[k][j];
                 }
             }
         }
         return result;
     }
-    };
+
+    [[nodiscard]] inline Matrix MatrixTranslation(float x, float y, float z)
+    {
+        Matrix result = MatrixIdentity();
+        result.m[0][3] = x;
+        result.m[1][3] = y;
+        result.m[2][3] = z;
+        return result;
+    }
+
+    [[nodiscard]] inline Matrix MatrixScale(float x, float y, float z)
+    {
+        Matrix result = MatrixIdentity();
+        result.m[0][0] = x;
+        result.m[1][1] = y;
+        result.m[2][2] = z;
+        return result;
+    }
+
+    [[nodiscard]] inline Matrix MatrixRotationX(float radians)
+    {
+        float c = cosf(radians);
+        float s = sinf(radians);
+        Matrix result = MatrixIdentity();
+        result.m[1][1] =  c;
+        result.m[1][2] = -s;
+        result.m[2][1] =  s;
+        result.m[2][2] =  c;
+        return result;
+    }
+
+    [[nodiscard]] inline Matrix MatrixRotationY(float radians)
+    {
+        float c = cosf(radians);
+        float s = sinf(radians);
+        Matrix result = MatrixIdentity();
+        result.m[0][0] =  c;
+        result.m[0][2] =  s;
+        result.m[2][0] = -s;
+        result.m[2][2] =  c;
+        return result;
+    }
+
+    [[nodiscard]] inline Matrix MatrixRotationZ(float radians)
+    {
+        float c = cosf(radians);
+        float s = sinf(radians);
+        Matrix result = MatrixIdentity();
+        result.m[0][0] =  c;
+        result.m[0][1] = -s;
+        result.m[1][0] =  s;
+        result.m[1][1] =  c;
+        return result;
+    }
+
+    inline void MatrixTranslate(Matrix& m, const Vector3& v)
+    {
+        m.m[0][3] += v.x;
+        m.m[1][3] += v.y;
+        m.m[2][3] += v.z;
+    }
+
+    [[nodiscard]] inline Matrix MatrixRotation(float x, float y, float z)
+    {
+        return MatrixRotationX(x) * MatrixRotationY(y) * MatrixRotationZ(z);
+    }
 
     inline Matrix LookAt(const Vector3& eye, const Vector3& target, const Vector3& up)
     {
@@ -83,4 +149,46 @@ namespace Juliet
         result.m[3][3]  = 0.0f;
         return result;
     }
+
+    [[nodiscard]] inline Matrix MatrixInverse(const Matrix& m)
+    {
+        Matrix out = {};
+
+        float m00 = m.m[0][0], m01 = m.m[0][1], m02 = m.m[0][2], m03 = m.m[0][3];
+        float m10 = m.m[1][0], m11 = m.m[1][1], m12 = m.m[1][2], m13 = m.m[1][3];
+        float m20 = m.m[2][0], m21 = m.m[2][1], m22 = m.m[2][2], m23 = m.m[2][3];
+        float m30 = m.m[3][0], m31 = m.m[3][1], m32 = m.m[3][2], m33 = m.m[3][3];
+
+        out.m[0][0] = m11 * m22 * m33 - m11 * m23 * m32 - m21 * m12 * m33 + m21 * m13 * m32 + m31 * m12 * m23 - m31 * m13 * m22;
+        out.m[1][0] = -m10 * m22 * m33 + m10 * m23 * m32 + m20 * m12 * m33 - m20 * m13 * m32 - m30 * m12 * m23 + m30 * m13 * m22;
+        out.m[2][0] = m10 * m21 * m33 - m10 * m23 * m31 - m20 * m11 * m33 + m20 * m13 * m31 + m30 * m11 * m23 - m30 * m13 * m21;
+        out.m[3][0] = -m10 * m21 * m32 + m10 * m22 * m31 + m20 * m11 * m32 - m20 * m12 * m31 - m30 * m11 * m22 + m30 * m12 * m21;
+
+        out.m[0][1] = -m01 * m22 * m33 + m01 * m23 * m32 + m21 * m02 * m33 - m21 * m03 * m32 - m31 * m02 * m23 + m31 * m03 * m22;
+        out.m[1][1] = m00 * m22 * m33 - m00 * m23 * m32 - m20 * m02 * m33 + m20 * m03 * m32 + m30 * m02 * m23 - m30 * m03 * m22;
+        out.m[2][1] = -m00 * m21 * m33 + m00 * m23 * m31 + m20 * m01 * m33 - m20 * m03 * m31 - m30 * m01 * m23 + m30 * m03 * m21;
+        out.m[3][1] = m00 * m21 * m32 - m00 * m22 * m31 - m20 * m01 * m32 + m20 * m02 * m31 + m30 * m01 * m22 - m30 * m02 * m21;
+
+        out.m[0][2] = m01 * m12 * m33 - m01 * m13 * m32 - m11 * m02 * m33 + m11 * m03 * m32 + m31 * m02 * m13 - m31 * m03 * m12;
+        out.m[1][2] = -m00 * m12 * m33 + m00 * m13 * m32 + m10 * m02 * m33 - m10 * m03 * m32 - m30 * m02 * m13 + m30 * m03 * m12;
+        out.m[2][2] = m00 * m11 * m33 - m00 * m13 * m31 - m10 * m01 * m33 + m10 * m03 * m31 + m30 * m01 * m13 - m30 * m03 * m11;
+        out.m[3][2] = -m00 * m11 * m32 + m00 * m12 * m31 + m10 * m01 * m32 - m10 * m02 * m31 - m30 * m01 * m12 + m30 * m02 * m11;
+
+        out.m[0][3] = -m01 * m12 * m23 + m01 * m13 * m22 + m11 * m02 * m23 - m11 * m03 * m22 - m21 * m02 * m13 + m21 * m03 * m12;
+        out.m[1][3] = m00 * m12 * m23 - m00 * m13 * m22 - m10 * m02 * m23 + m10 * m03 * m22 + m20 * m02 * m13 - m20 * m03 * m12;
+        out.m[2][3] = -m00 * m11 * m23 + m00 * m13 * m21 + m10 * m01 * m23 - m10 * m03 * m21 - m20 * m01 * m13 + m20 * m03 * m11;
+        out.m[3][3] = m00 * m11 * m22 - m00 * m12 * m21 - m10 * m01 * m22 + m10 * m02 * m21 + m20 * m01 * m12 - m20 * m02 * m11;
+
+        float det = m00 * out.m[0][0] + m01 * out.m[1][0] + m02 * out.m[2][0] + m03 * out.m[3][0];
+
+        if (det != 0.0f)
+        {
+            float invDet = 1.0f / det;
+            for (int r = 0; r < 4; ++r)
+                for (int c = 0; c < 4; ++c)
+                    out.m[r][c] *= invDet;
+        }
+
+        return out;
+    }
 } // namespace Juliet

Juliet/include/Engine/Engine.h

@@ -9,6 +9,7 @@ namespace Juliet
     struct Engine
     {
         IApplication* Application   = nullptr;
+        Arena*        PlatformArena = nullptr;
     };
 
     void InitializeEngine(JulietInit_Flags flags);

Juliet/include/Graphics/Graphics.h

@@ -164,6 +164,8 @@ namespace Juliet
     extern JULIET_API GraphicsBuffer* CreateGraphicsBuffer(NonNullPtr<GraphicsDevice> device, const BufferCreateInfo& createInfo);
     extern JULIET_API GraphicsTransferBuffer* CreateGraphicsTransferBuffer(NonNullPtr<GraphicsDevice>      device,
                                                                            const TransferBufferCreateInfo& createInfo);
+    extern JULIET_API void* MapGraphicsBuffer(NonNullPtr<GraphicsDevice> device, NonNullPtr<GraphicsBuffer> buffer);
+    extern JULIET_API void  UnmapGraphicsBuffer(NonNullPtr<GraphicsDevice> device, NonNullPtr<GraphicsBuffer> buffer);
     extern JULIET_API void* MapGraphicsTransferBuffer(NonNullPtr<GraphicsDevice> device, NonNullPtr<GraphicsTransferBuffer> buffer);
     extern JULIET_API void UnmapGraphicsTransferBuffer(NonNullPtr<GraphicsDevice> device, NonNullPtr<GraphicsTransferBuffer> buffer);
     extern JULIET_API void CopyBuffer(NonNullPtr<CommandList> commandList, NonNullPtr<GraphicsBuffer> dst,

Juliet/include/Graphics/GraphicsBuffer.h

@@ -8,7 +8,6 @@ namespace Juliet
         IndexBuffer      = 1 << 0,
         ConstantBuffer   = 1 << 1,
         StructuredBuffer = 1 << 2,
-        VertexBuffer     = 1 << 3,
     };
 
     enum class TransferBufferUsage : uint8
@@ -20,7 +19,9 @@ namespace Juliet
     struct BufferCreateInfo
     {
         size_t      Size;
+        size_t      Stride;
         BufferUsage Usage;
+        bool        IsDynamic;
     };
 
     struct TransferBufferCreateInfo

Juliet/include/Graphics/Lighting.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <Juliet.h>
+#include <Core/Math/Vector.h>
+
+namespace Juliet
+{
+    struct PointLight
+    {
+        Vector3 Position;
+        float   Radius;
+        Vector3 Color;
+        float   Intensity;
+    };
+} // namespace Juliet

Juliet/include/Graphics/Mesh.h

@@ -2,6 +2,7 @@
 
 #include <Core/Common/CoreTypes.h>
 #include <Core/Common/NonNullPtr.h>
+#include <Core/Math/Matrix.h>
 #include <Juliet.h>
 
 namespace Juliet
@@ -11,18 +12,12 @@ namespace Juliet
 
     struct Mesh
     {
-        Vertex* Vertices;
-        uint16* Indices;
-
         size_t VertexCount;
         size_t IndexCount;
 
         index_t VertexOffset;
         index_t IndexOffset;
-        index_t IndexByteOffset;
-    };
 
-    JULIET_API Mesh* CreateCubeMesh(NonNullPtr<Arena> arena);
+        Matrix Transform = MatrixIdentity();
-    JULIET_API Mesh* CreateQuadMesh(NonNullPtr<Arena> arena);
+    };
-    JULIET_API void  DestroyMesh(NonNullPtr<Mesh> mesh);
 } // namespace Juliet

Juliet/include/Graphics/MeshRenderer.h

@@ -0,0 +1,75 @@
+#pragma once
+
+#include <Core/Container/Vector.h>
+#include <Core/Math/Matrix.h>
+#include <Graphics/Lighting.h>
+#include <Graphics/PushConstants.h>
+#include <Graphics/VertexData.h>
+#include <Juliet.h>
+
+namespace Juliet
+{
+    struct GraphicsTransferBuffer;
+    struct RenderPass;
+    struct CommandList;
+    struct GraphicsBuffer;
+    struct Window;
+    struct GraphicsPipeline;
+    struct GraphicsDevice;
+    struct Mesh;
+
+    using MeshID  = index_t;
+    using LightID = index_t;
+
+    constexpr size_t kGeometryPage       = Megabytes(64);
+    constexpr size_t kIndexPage          = Megabytes(32);
+    constexpr size_t kDefaultMeshNumber  = 500;
+    constexpr size_t kDefaultVertexCount = 2'000'000;  // Fit less than one geometry page
+    constexpr size_t kDefaultIndexCount  = 16'000'000; // Fit less than one index page
+    constexpr size_t kDefaultLightCount  = 1024;
+
+    struct MeshRenderer
+    {
+        // Note we prevent realloc for now.
+        VectorArena<Mesh, kDefaultMeshNumber, false>    Meshes;
+        VectorArena<Vertex, kDefaultVertexCount, false> Vertices;
+        VectorArena<Index, kDefaultIndexCount, false>   Indices;
+        VectorArena<PointLight, kDefaultLightCount, false> PointLights;
+
+        GraphicsBuffer*         VertexBuffer;
+        GraphicsBuffer*         IndexBuffer;
+        GraphicsTransferBuffer* StreamCopyBuffer;
+        GraphicsTransferBuffer* LoadCopyBuffer;
+
+        GraphicsBuffer*         LightsBuffer;
+        PointLight*             MappedLights;
+
+        GraphicsDevice*   Device;
+        GraphicsPipeline* Pipeline;
+    };
+
+    JULIET_API void InitializeMeshRenderer(NonNullPtr<Arena> arena);
+    [[nodiscard]] JULIET_API bool InitializeMeshRendererGraphics(NonNullPtr<GraphicsDevice> device, NonNullPtr<Window> window);
+    JULIET_API void ShutdownMeshRendererGraphics();
+    JULIET_API void ShutdownMeshRenderer();
+    JULIET_API void LoadMeshesOnGPU(NonNullPtr<CommandList> cmdList);
+    JULIET_API void RenderMeshes(NonNullPtr<RenderPass> pass, NonNullPtr<CommandList> cmdList, PushData& pushData);
+
+    // Lights
+    [[nodiscard]] JULIET_API LightID AddPointLight(const PointLight& light);
+    JULIET_API void                  SetPointLightPosition(LightID id, const Vector3& position);
+    JULIET_API void                  SetPointLightColor(LightID id, const Vector3& color);
+    JULIET_API void                  SetPointLightRadius(LightID id, float radius);
+    JULIET_API void                  SetPointLightIntensity(LightID id, float intensity);
+    JULIET_API void                  ClearPointLights();
+
+    // Utils
+    [[nodiscard]] JULIET_API MeshID AddCube();
+    [[nodiscard]] JULIET_API MeshID AddQuad();
+    JULIET_API void                 SetMeshTransform(MeshID id, const Matrix& transform);
+
+#if ALLOW_SHADER_HOT_RELOAD
+    JULIET_API void ReloadMeshRendererShaders();
+#endif
+
+} // namespace Juliet

Juliet/include/Graphics/PushConstants.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <Core/Math/Matrix.h>
+#include <Core/Math/Vector.h>
+#include <Juliet.h>
+
+namespace Juliet
+{
+    struct PushData
+    {
+        Matrix ViewProjection;
+        uint32 MeshIndex;
+        uint32 TransformsBufferIndex;
+        uint32 BufferIndex;
+        uint32 TextureIndex;
+        uint32 VertexOffset;
+        uint32 Padding;
+        float  Scale[2];
+        float  Translate[2];
+        float  Padding2[2];
+        
+        Vector3 GlobalLightDirection;
+        float   GlobalLightPad;
+        Vector3 GlobalLightColor;
+        float   GlobalAmbientIntensity;
+
+        uint32  LightBufferIndex;
+        uint32  ActiveLightCount;
+    };
+} // namespace Juliet

Juliet/include/Graphics/SkyboxRenderer.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <Core/Math/Matrix.h>
+#include <Juliet.h>
+
+namespace Juliet
+{
+    struct RenderPass;
+    struct CommandList;
+    struct Window;
+    struct GraphicsPipeline;
+    struct GraphicsDevice;
+
+    struct SkyboxRenderer
+    {
+        GraphicsDevice*   Device;
+        GraphicsPipeline* Pipeline;
+    };
+
+    [[nodiscard]] JULIET_API bool InitializeSkyboxRenderer(NonNullPtr<GraphicsDevice> device,
+                                                           NonNullPtr<Window> window);
+    JULIET_API void               ShutdownSkyboxRenderer();
+    JULIET_API void               RenderSkybox(NonNullPtr<RenderPass> pass, NonNullPtr<CommandList> cmdList, const Matrix& viewProjection);
+
+#if ALLOW_SHADER_HOT_RELOAD
+    JULIET_API void ReloadSkyboxShaders();
+#endif
+
+} // namespace Juliet

Juliet/include/Graphics/VertexData.h

@@ -5,6 +5,9 @@ namespace Juliet
     struct Vertex
     {
         float Position[3];
+        float Normal[3];
         float Color[4];
     };
+
+    using Index = uint16;
 } // namespace Juliet

Juliet/src/Core/HAL/Display/Display.cpp

@@ -123,7 +123,7 @@ namespace Juliet
     {
         // Find and destroy
         VectorArena<Window>& windows = g_CurrentDisplayDevice->Windows;
-        for (index_t idx = windows.Size() - 1; idx != 0; --idx)
+        for (index_t idx = windows.Size(); idx-- > 0;)
         {
             Window& windowRef = windows[idx];
             if (windowRef.ID == window->ID)
@@ -149,6 +149,11 @@ namespace Juliet
         return window->ID;
     }
 
+    void SetWindowTitle(NonNullPtr<Window> window, String title)
+    {
+        g_CurrentDisplayDevice->SetWindowTitle(g_CurrentDisplayDevice, window, title);
+    }
+
     // Display Device Utils. Not exposed in the API
     DisplayDevice* GetDisplayDevice()
     {

Juliet/src/Core/HAL/Display/DisplayDevice.h

@@ -25,6 +25,7 @@ namespace Juliet
         void (*DestroyPlatformWindow)(NonNullPtr<DisplayDevice> self, NonNullPtr<Window> window);
         void (*ShowWindow)(NonNullPtr<DisplayDevice> self, NonNullPtr<Window> window);
         void (*HideWindow)(NonNullPtr<DisplayDevice> self, NonNullPtr<Window> window);
+        void (*SetWindowTitle)(NonNullPtr<DisplayDevice> self, NonNullPtr<Window> window, String title);
 
         // Events
         void (*PumpEvents)(NonNullPtr<DisplayDevice> self);

Juliet/src/Core/HAL/Display/Win32/Win32DisplayDevice.cpp

@@ -33,10 +33,11 @@ namespace Juliet::Win32
             device->DestroyPlatformWindow = DestroyPlatformWindow;
             device->ShowWindow            = ShowWindow;
             device->HideWindow            = HideWindow;
+            device->SetWindowTitle        = SetWindowTitle;
 
             device->PumpEvents = PumpEvents;
 
-            device->Windows.Create(JULIET_DEBUG_ONLY("Display Windows"));
+            device->Windows.Create(arena JULIET_DEBUG_PARAM("Display Windows"));
 
             return device;
         }

Juliet/src/Core/HAL/Display/Win32/Win32DisplayEvent.cpp

@@ -14,8 +14,10 @@
 // For GET_X_LPARAM, GET_Y_LPARAM.
 #include <windowsx.h>
 
+#ifdef JULIET_ENABLE_IMGUI
 #include <imgui.h> // Need For IMGUI_IMPL_API
 extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+#endif
 
 namespace Juliet::Win32
 {
@@ -145,10 +147,12 @@ namespace Juliet::Win32
 
     LRESULT CALLBACK Win32MainWindowCallback(HWND handle, UINT message, WPARAM wParam, LPARAM lParam)
     {
+#ifdef JULIET_ENABLE_IMGUI
         if (ImGui_ImplWin32_WndProcHandler(handle, message, wParam, lParam))
         {
             return true;
         }
+#endif
 
         LRESULT returnCode = -1;
 

Juliet/src/Core/HAL/Display/Win32/Win32Window.cpp

@@ -92,4 +92,13 @@ namespace Juliet::Win32
         auto& win32State = static_cast<Window32State&>(*window->State);
         ::ShowWindow(win32State.Handle, SW_HIDE);
     }
+
+    void SetWindowTitle(NonNullPtr<DisplayDevice> /*self*/, NonNullPtr<Window> window, String title)
+    {
+        Assert(window);
+        Assert(window->State);
+
+        auto& win32State = static_cast<Window32State&>(*window->State);
+        SetWindowTextA(win32State.Handle, CStr(title));
+    }
 } // namespace Juliet::Win32

Juliet/src/Core/HAL/Display/Win32/Win32Window.h

@@ -25,4 +25,5 @@ namespace Juliet::Win32
     extern void DestroyPlatformWindow(NonNullPtr<DisplayDevice> self, NonNullPtr<Window> window);
     extern void ShowWindow(NonNullPtr<DisplayDevice> self, NonNullPtr<Window> window);
     extern void HideWindow(NonNullPtr<DisplayDevice> self, NonNullPtr<Window> window);
+    extern void SetWindowTitle(NonNullPtr<DisplayDevice> self, NonNullPtr<Window> window, String title);
 } // namespace Juliet::Win32

Juliet/src/Core/HAL/Filesystem/Filesystem.cpp

@@ -1,14 +1,29 @@
+#include <Core/Common/CoreTypes.h>
+#include <Core/Common/CoreUtils.h>
 #include <Core/Common/String.h>
 #include <Core/HAL/Filesystem/Filesystem.h>
 #include <Core/HAL/Filesystem/Filesystem_Platform.h>
 #include <Core/HAL/Filesystem/Filesystem_Private.h>
+#include <Core/HAL/Win32.h>
+#include <Core/Logging/LogManager.h>
+#include <Core/Logging/LogTypes.h>
 #include <Core/Memory/Allocator.h>
 
+#include <cstdio>
+
 namespace Juliet
 {
     namespace
     {
         String CachedBasePath      = {};
+        String CachedAssetBasePath = {};
+
+        bool DirectoryExists(const char* path)
+        {
+            Assert(path);
+            DWORD attributes = GetFileAttributesA(path);
+            return (attributes != INVALID_FILE_ATTRIBUTES) && (attributes & FILE_ATTRIBUTE_DIRECTORY);
+        }
     }
 
     String GetBasePath()
@@ -20,6 +35,27 @@ namespace Juliet
         return CachedBasePath;
     }
 
+    String GetAssetBasePath()
+    {
+        return CachedAssetBasePath;
+    }
+
+    [[nodiscard]] String GetAssetPath(String filename)
+    {
+        Assert(IsValid(CachedAssetBasePath));
+        Assert(IsValid(filename));
+
+        size_t totalSize = CachedAssetBasePath.Size + filename.Size + 1;
+        auto*  buffer    = static_cast<char*>(Calloc(totalSize, sizeof(char)));
+        if (!buffer)
+        {
+            return {};
+        }
+
+        snprintf(buffer, totalSize, "%s%s", CStr(CachedAssetBasePath), CStr(filename));
+        return { buffer, totalSize - 1 };
+    }
+
     bool IsAbsolutePath(String path)
     {
         if (!IsValid(path))
@@ -29,7 +65,40 @@ namespace Juliet
         return Platform::IsAbsolutePath(path);
     }
 
-    void InitFilesystem() {}
+    void InitFilesystem()
+    {
+        String basePath = GetBasePath();
+        Assert(IsValid(basePath));
+
+        // Probe candidate paths for compiled shader directory
+        // 1. Shipping layout: Assets/Shaders/ next to the exe
+        // 2. Dev layout:      ../../Assets/compiled/ (exe is in bin/x64Clang-<Config>/)
+        constexpr const char* kCandidates[] = {
+            "Assets/Shaders/",
+            "../../Assets/compiled/"
+        };
+
+        for (const char* candidate : kCandidates)
+        {
+            char probePath[512];
+            snprintf(probePath, sizeof(probePath), "%s%s", CStr(basePath), candidate);
+
+            if (DirectoryExists(probePath))
+            {
+                size_t len    = strlen(probePath);
+                auto*  buffer = static_cast<char*>(Calloc(len + 1, sizeof(char)));
+                if (buffer)
+                {
+                    snprintf(buffer, len + 1, "%s", probePath);
+                    CachedAssetBasePath = { buffer, len };
+                    Log(LogLevel::Message, LogCategory::Core, "Asset base path: %s", buffer);
+                }
+                return;
+            }
+        }
+
+        Log(LogLevel::Error, LogCategory::Core, "Filesystem: Could not find Assets/compiled/ directory!");
+    }
 
     void ShutdownFilesystem()
     {
@@ -38,5 +107,10 @@ namespace Juliet
             CachedBasePath.Size = 0;
             SafeFree(CachedBasePath.Data);
         }
+        if (IsValid(CachedAssetBasePath))
+        {
+            CachedAssetBasePath.Size = 0;
+            SafeFree(CachedAssetBasePath.Data);
+        }
     }
 } // namespace Juliet

Juliet/src/Core/HAL/Filesystem/Win32/Win32Filesystem.cpp

@@ -58,7 +58,7 @@ namespace Juliet::Platform
 
     bool IsAbsolutePath(String path)
     {
-        if (path.Data || path.Size == 0)
+        if (!path.Data || path.Size == 0)
         {
             return false;
         }

Juliet/src/Core/HAL/OS/OS.cpp

@@ -21,6 +21,14 @@ namespace Juliet
         }
     } // namespace Memory
 
+    namespace Debug
+    {
+        bool IsDebuggerPresent()
+        {
+            return Internal::IsDebuggerPresent();
+        }
+    } // namespace Debug
+
     int Bootstrap(EntryPointFunc entryPointFunc, int argc, wchar_t** argv)
     {
         return Internal::OS_Main(entryPointFunc, argc, argv);

Juliet/src/Core/HAL/OS/OS_Private.h

@@ -2,16 +2,17 @@
 
 namespace Juliet
 {
-    namespace Memory
+    namespace Memory::Internal
-    {
-        namespace Internal
     {
         Byte* OS_Reserve(size_t size);
         bool  OS_Commit(Byte* ptr, size_t size);
         void  OS_Release(Byte* ptr, size_t size);
-        } // namespace Internal
+    } // namespace Memory::Internal
-    } // namespace Memory
 
+    namespace Debug::Internal
+    {
+        bool IsDebuggerPresent();
+    } // namespace Debug::Internal
     namespace Internal
     {
         int OS_Main(EntryPointFunc entryPointFunc, int argc, wchar_t** argv);

Juliet/src/Core/HAL/OS/Win32/Win32OS.cpp

@@ -3,6 +3,8 @@
 #include <Core/HAL/OS/OS.h>
 #include <Core/HAL/OS/OS_Private.h>
 #include <Core/HAL/Win32.h>
+#include <Core/Logging/LogManager.h>
+#include <Core/Logging/LogTypes.h>
 
 namespace Juliet
 {
@@ -15,7 +17,7 @@ namespace Juliet
     {
         Byte* OS_Reserve(size_t size)
         {
-            auto result = static_cast<Byte*>(VirtualAlloc(nullptr, size, MEM_RESERVE, PAGE_READWRITE));
+            auto* result = static_cast<Byte*>(VirtualAlloc(nullptr, size, MEM_RESERVE, PAGE_READWRITE));
             return result;
         }
 
@@ -25,8 +27,12 @@ namespace Juliet
 
             Assert(size <= static_cast<size_t>(MaxValueOf<DWORD>()));
 
+            if (w32_rio_functions.RIORegisterBuffer != nullptr && w32_rio_functions.RIODeregisterBuffer != nullptr)
+            {
                 w32_rio_functions.RIODeregisterBuffer(
                     w32_rio_functions.RIORegisterBuffer(reinterpret_cast<PCHAR>(ptr), static_cast<DWORD>(size)));
+            }
+
             return result;
         }
 
@@ -39,6 +45,14 @@ namespace Juliet
         }
     } // namespace Memory::Internal
 
+    namespace Debug::Internal
+    {
+        bool IsDebuggerPresent()
+        {
+            return ::IsDebuggerPresent();
+        }
+    } // namespace Debug::Internal
+
     namespace
     {
         // Used to handle a crash/exception
@@ -54,8 +68,6 @@ namespace Juliet
     {
         int OS_Main(EntryPointFunc entryPointFunc, int argc, wchar_t** argv)
         {
-            (void)argc;
-            (void)argv;
             SetUnhandledExceptionFilter(&ExceptionFilter);
 
             // Allow only one instance to be launched.
@@ -74,11 +86,12 @@ namespace Juliet
                 DWORD  rio_byte = 0;
                 SOCKET Sock     = socket(AF_UNSPEC, SOCK_STREAM, IPPROTO_TCP);
                 WSAIoctl(Sock, SIO_GET_MULTIPLE_EXTENSION_FUNCTION_POINTER, &guid, sizeof(guid),
-                         (void**)&w32_rio_functions, sizeof(w32_rio_functions), &rio_byte, nullptr, nullptr);
+                         reinterpret_cast<void**>(&w32_rio_functions), sizeof(w32_rio_functions), &rio_byte, nullptr, nullptr);
                 closesocket(Sock);
             }
 
-            return entryPointFunc(argc, argv);
+            int result = entryPointFunc(argc, argv);
+            return result;
         }
     } // namespace Internal
 } // namespace Juliet

Juliet/src/Core/ImGui/ImGuiService.cpp

@@ -3,9 +3,10 @@
 #include <Core/ImGui/ImGuiService.h>
 #include <Core/ImGui/ImGuiTests.h>
 #include <Core/Logging/LogManager.h>
-
 #include <Core/Memory/MemoryArena.h>
 
+#ifdef JULIET_ENABLE_IMGUI
+
 #include <backends/imgui_impl_win32.h>
 #include <imgui.h>
 
@@ -102,3 +103,5 @@ namespace Juliet::ImGuiService
         Juliet::UnitTest::TestImGui();
     }
 } // namespace Juliet::ImGuiService
+
+#endif // JULIET_ENABLE_IMGUI

Juliet/src/Core/ImGui/ImGuiTests.cpp

@@ -10,6 +10,7 @@ namespace Juliet::UnitTest
 {
     void TestImGui()
     {
+#ifdef JULIET_ENABLE_IMGUI
         ImGuiContext* ctx = ImGuiService::GetContext();
 
         if (ImGui::GetCurrentContext() != ctx)
@@ -68,5 +69,6 @@ namespace Juliet::UnitTest
         (void)drawList;
 
         printf("ImGui tests passed (Exhaustive).\n");
+#endif
     }
 } // namespace Juliet::UnitTest

Juliet/src/Core/Logging/LogManager.cpp

@@ -28,6 +28,9 @@ namespace Juliet
         };
         DECLARE_QUEUE(LogsEntry);
 
+        // TODO: Debug level per category
+        const bool kPrintDebugLog = false;
+
         // A log scope accumulates log until end of scope.
         // Can be used to accumulate then write in a log file each frame.
         struct LogScope
@@ -133,6 +136,11 @@ namespace Juliet
 
     void Log(LogLevel level, LogCategory category, const char* fmt, va_list args)
     {
+        if (level == LogLevel::Debug && kPrintDebugLog == false)
+        {
+            return;
+        }
+
         // TODO : Revisit, copy from https://github.com/Eclmist/Ether/blob/develop/src/common/logging/loggingmanager.cpp
         char formattedBuffer[4096];
 
@@ -163,6 +171,14 @@ namespace Juliet
         va_end(args);
     }
 
+    void LogDebug(LogCategory category, const char* fmt, ...)
+    {
+        va_list args;
+        va_start(args, fmt);
+        Log(LogLevel::Debug, category, fmt, args);
+        va_end(args);
+    }
+
     void LogMessage(LogCategory category, const char* fmt, ...)
     {
         va_list args;

Juliet/src/Core/Memory/MemoryArena.cpp

@@ -75,12 +75,12 @@ namespace Juliet
 
     void ArenaRelease(NonNullPtr<Arena> arena)
     {
-        JULIET_DEBUG_ONLY(DebugUnregisterArena(arena);)
+        // Release active blocks (Current chain)
-
         for (Arena *node = arena->Current, *previous = nullptr; node != nullptr; node = previous)
         {
             previous = node->Previous;
 
+            JULIET_DEBUG_ONLY(DebugUnregisterArena(node);)
             JULIET_DEBUG_ONLY(DebugArenaFreeBlock(node);)
 
             Memory::OS_Release(node, node->Reserved);

Juliet/src/Core/Memory/MemoryArenaDebug.cpp

@@ -68,6 +68,8 @@ namespace Juliet
         {
             arena->GlobalNext->GlobalPrev = arena->GlobalPrev;
         }
+        arena->GlobalPrev = nullptr;
+        arena->GlobalNext = nullptr;
     }
 
     void DebugArenaSetDebugName(NonNullPtr<Arena> arena, const char* name)

Juliet/src/Engine/Engine.cpp

@@ -6,7 +6,9 @@
 #include <Engine/Engine.h>
 #include <Graphics/DebugDisplay.h>
 #include <Graphics/Graphics.h>
+#include <Graphics/MeshRenderer.h>
 #include <Graphics/RenderPass.h>
+#include <Graphics/SkyboxRenderer.h>
 #include <time.h>
 
 #ifdef JULIET_ENABLE_IMGUI
@@ -37,6 +39,16 @@ namespace Juliet
             if (device)
             {
                 DebugDisplay_Initialize(device);
+                if (Window* window = EngineInstance.Application->GetPlatformWindow())
+                {
+                    bool success = InitializeMeshRendererGraphics(device, window);
+                    Assert(success);
+                    (void)(success);
+
+                    success = InitializeSkyboxRenderer(device, window);
+                    Assert(success);
+                    (void)(success);
+                }
             }
 
 #ifdef JULIET_ENABLE_IMGUI
@@ -73,6 +85,8 @@ namespace Juliet
             if (device)
             {
                 DebugDisplay_Shutdown(device);
+                ShutdownSkyboxRenderer();
+                ShutdownMeshRendererGraphics();
             }
         }
 
@@ -122,6 +136,9 @@ namespace Juliet
                 Camera debugCamera = EngineInstance.Application->GetDebugCamera();
                 DebugDisplay_Flush(cmdList, pass, debugCamera);
 
+                // Note: The MeshRenderer and SkyboxRenderer draw calls are still inside Application->OnRender
+                // They shouldn't be moved here directly without an interface since they require PushData.
+
 #ifdef JULIET_ENABLE_IMGUI
                 // ImGui rendering (always last before EndRenderPass)
                 ImGuiRenderer_Render(cmdList, pass);
@@ -136,6 +153,8 @@ namespace Juliet
 
     void InitializeEngine(JulietInit_Flags flags)
     {
+        EngineInstance.PlatformArena = ArenaAllocate({ .AllowRealloc = true } JULIET_DEBUG_PARAM("Platform Arena"));
+
         InitializeLogManager();
 
 #if JULIET_DEBUG
@@ -153,12 +172,17 @@ namespace Juliet
 
         ShutdownFilesystem();
         ShutdownLogManager();
+
+        ArenaRelease(EngineInstance.PlatformArena);
     }
 
     void LoadApplication(IApplication& app)
     {
         EngineInstance.Application = &app;
-        EngineInstance.Application->Init();
+
+        InitializeMeshRenderer(EngineInstance.PlatformArena);
+
+        EngineInstance.Application->Init(EngineInstance.PlatformArena);
 
         // Systems depending on Window/GraphicsDevice
         InitializeDependentSystems();
@@ -170,6 +194,9 @@ namespace Juliet
         ShutdownDependentSystems();
 
         EngineInstance.Application->Shutdown();
+
+        ShutdownMeshRenderer();
+
         EngineInstance.Application = nullptr;
     }
 

Juliet/src/Graphics/D3D12/D3D12Buffer.cpp

@@ -38,7 +38,6 @@ namespace Juliet::D3D12
             case BufferUsage::ConstantBuffer: return "ConstantBuffer";
             case BufferUsage::StructuredBuffer: return "StructuredBuffer";
             case BufferUsage::IndexBuffer: return "IndexBuffer";
-            case BufferUsage::VertexBuffer: return "VertexBuffer";
             }
             return "Unknown";
         }
@@ -62,95 +61,62 @@ namespace Juliet::D3D12
             Free(buffer);
         }
 
-        D3D12Buffer* CreateBuffer(NonNullPtr<D3D12Driver> d3d12Driver, size_t size, BufferUsage usage, D3D12BufferType type)
+        D3D12Buffer* CreateBuffer(NonNullPtr<D3D12Driver> d3d12Driver, size_t size, size_t stride, BufferUsage usage,
+                                  D3D12BufferType type, bool isDynamic)
         {
-            auto buffer = static_cast<D3D12Buffer*>(Calloc(1, sizeof(D3D12Buffer)));
+            auto* buffer = static_cast<D3D12Buffer*>(Calloc(1, sizeof(D3D12Buffer)));
             if (!buffer)
             {
                 return nullptr;
             }
 
+            if (type == D3D12BufferType::Base && usage == BufferUsage::None)
+            {
+                Assert(false, "Creating Base buffer with BufferUsage::None is invalid");
+                DestroyBuffer(buffer);
+                return nullptr;
+            }
+
             // Align size for Constant Buffers
             if (usage == BufferUsage::ConstantBuffer)
             {
                 size = (size + 255U) & ~255U;
             }
 
-            D3D12_RESOURCE_STATES initialState   = D3D12_RESOURCE_STATE_COMMON;
             D3D12_HEAP_PROPERTIES heapProperties = {};
+            heapProperties.CPUPageProperty       = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
+            heapProperties.MemoryPoolPreference  = D3D12_MEMORY_POOL_UNKNOWN;
+
+            D3D12_RESOURCE_STATES initialState = D3D12_RESOURCE_STATE_COMMON;
             D3D12_HEAP_FLAGS      heapFlags    = D3D12_HEAP_FLAG_NONE;
 
-            switch (type)
+            // Constant buffers or Dynamic buffers generally need to be uploaded every frame
-            {
+            const bool isUpload = isDynamic || (type == D3D12BufferType::TransferUpload) || (usage == BufferUsage::ConstantBuffer);
-            case D3D12BufferType::Base:
-                {
-                    switch (usage)
-                    {
-                    case BufferUsage::None:
-                        {
-                            Assert(false, "Creating buffer with invalid usage");
-                            DestroyBuffer(buffer);
-                            return nullptr;
-                        }
 
-                    case BufferUsage::IndexBuffer:
+            if (type == D3D12BufferType::TransferDownload)
-                    case BufferUsage::StructuredBuffer:
-                    case BufferUsage::VertexBuffer:
-                        {
-                            heapProperties.Type                 = D3D12_HEAP_TYPE_DEFAULT;
-                            heapProperties.CPUPageProperty      = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
-                            heapProperties.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
-                            heapFlags                           = D3D12_HEAP_FLAG_NONE;
-                            break;
-                        }
-                    case BufferUsage::ConstantBuffer:
-                        {
-                            if (d3d12Driver->GPUUploadHeapSupported)
-                            {
-                                heapProperties.Type = D3D12_HEAP_TYPE_GPU_UPLOAD;
-                            }
-                            else
-                            {
-                                heapProperties.Type = D3D12_HEAP_TYPE_UPLOAD;
-                                heapFlags           = D3D12_HEAP_FLAG_ALLOW_ONLY_BUFFERS;
-                            }
-                            heapProperties.CPUPageProperty      = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
-                            heapProperties.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
-                            initialState                        = D3D12_RESOURCE_STATE_GENERIC_READ;
-
-                            break;
-                        }
-                    }
-                    break;
-                }
-            case D3D12BufferType::TransferDownload:
             {
                 heapProperties.Type = D3D12_HEAP_TYPE_READBACK;
-                    heapProperties.CPUPageProperty      = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
-                    heapProperties.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
-                    heapFlags                           = D3D12_HEAP_FLAG_NONE;
                 initialState        = D3D12_RESOURCE_STATE_COPY_DEST;
-                    break;
             }
-            case D3D12BufferType::TransferUpload:
+            else if (isUpload)
             {
                 if (d3d12Driver->GPUUploadHeapSupported)
                 {
                     heapProperties.Type = D3D12_HEAP_TYPE_GPU_UPLOAD;
+                    initialState        = D3D12_RESOURCE_STATE_COMMON;
                 }
                 else
                 {
                     heapProperties.Type = D3D12_HEAP_TYPE_UPLOAD;
-                        heapFlags           = D3D12_HEAP_FLAG_ALLOW_ONLY_BUFFERS;
-                    }
-                    heapProperties.CPUPageProperty      = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
-                    heapProperties.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
                     initialState        = D3D12_RESOURCE_STATE_GENERIC_READ;
-                    break;
                 }
             }
-
+            else
-            D3D12_CONSTANT_BUFFER_VIEW_DESC cbvDesc = {};
+            {
+                // Must be a static buffer (Base type)
+                heapProperties.Type = D3D12_HEAP_TYPE_DEFAULT;
+                initialState        = D3D12_RESOURCE_STATE_COMMON;
+            }
 
             D3D12_RESOURCE_DESC desc = {};
             desc.Dimension           = D3D12_RESOURCE_DIMENSION_BUFFER;
@@ -167,20 +133,22 @@ namespace Juliet::D3D12
 
             Log(LogLevel::Message, LogCategory::Graphics, "CreateBuffer: Device=%p, Size=%zu, Type=%s Use=%s",
                 (void*)d3d12Driver->D3D12Device, size, D3D12BufferTypeToString(type), BufferUsageToString(usage));
+
             ID3D12Resource* handle = nullptr;
             HRESULT result = d3d12Driver->D3D12Device->CreateCommittedResource(&heapProperties, heapFlags, &desc,
                                                                                initialState, nullptr, IID_ID3D12Resource,
                                                                                reinterpret_cast<void**>(&handle));
+
             if (FAILED(result))
             {
-                Log(LogLevel::Error, LogCategory::Graphics, "Could not create buffer! HRESULT=0x%08X", (uint32)result);
+                Log(LogLevel::Error, LogCategory::Graphics, "Could not create buffer! HRESULT=0x%08X", static_cast<uint32>(result));
                 Log(LogLevel::Error, LogCategory::Graphics, "Failed Desc: Width=%llu Layout=%d HeapType=%d",
                     (unsigned long long)desc.Width, (int)desc.Layout, (int)heapProperties.Type);
 
                 HRESULT removeReason = d3d12Driver->D3D12Device->GetDeviceRemovedReason();
                 if (FAILED(removeReason))
                 {
-                    Log(LogLevel::Error, LogCategory::Graphics, "Device Removed Reason: 0x%08X", (uint32)removeReason);
+                    Log(LogLevel::Error, LogCategory::Graphics, "Device Removed Reason: 0x%08X", static_cast<uint32>(removeReason));
                 }
 
                 DestroyBuffer(buffer);
@@ -205,6 +173,7 @@ namespace Juliet::D3D12
 
                     if (usage == BufferUsage::ConstantBuffer)
                     {
+                        D3D12_CONSTANT_BUFFER_VIEW_DESC cbvDesc = {};
                         cbvDesc.BufferLocation                  = handle->GetGPUVirtualAddress();
                         cbvDesc.SizeInBytes                     = static_cast<uint32>(size);
                         d3d12Driver->D3D12Device->CreateConstantBufferView(&cbvDesc, cpuHandle);
@@ -212,13 +181,25 @@ namespace Juliet::D3D12
                     else if (usage == BufferUsage::StructuredBuffer)
                     {
                         D3D12_SHADER_RESOURCE_VIEW_DESC srvDesc = {};
-                        srvDesc.Format                          = DXGI_FORMAT_R32_TYPELESS;
                         srvDesc.ViewDimension                   = D3D12_SRV_DIMENSION_BUFFER;
                         srvDesc.Shader4ComponentMapping         = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
                         srvDesc.Buffer.FirstElement             = 0;
+
+                        if (stride > 0)
+                        {
+                            srvDesc.Format                     = DXGI_FORMAT_UNKNOWN;
+                            srvDesc.Buffer.NumElements         = static_cast<uint32>(size / stride);
+                            srvDesc.Buffer.StructureByteStride = static_cast<uint32>(stride);
+                            srvDesc.Buffer.Flags               = D3D12_BUFFER_SRV_FLAG_NONE;
+                        }
+                        else
+                        {
+                            srvDesc.Format                     = DXGI_FORMAT_R32_TYPELESS;
                             srvDesc.Buffer.NumElements         = static_cast<uint32>(size / 4);
                             srvDesc.Buffer.StructureByteStride = 0;
                             srvDesc.Buffer.Flags               = D3D12_BUFFER_SRV_FLAG_RAW;
+                        }
+
                         d3d12Driver->D3D12Device->CreateShaderResourceView(handle, &srvDesc, cpuHandle);
                         Log(LogLevel::Message, LogCategory::Graphics, "  -> SRV DescriptorIndex=%u", descriptor.Index);
                     }
@@ -233,10 +214,10 @@ namespace Juliet::D3D12
         }
     } // namespace
 
-    GraphicsBuffer* CreateGraphicsBuffer(NonNullPtr<GPUDriver> driver, size_t size, BufferUsage usage)
+    GraphicsBuffer* CreateGraphicsBuffer(NonNullPtr<GPUDriver> driver, size_t size, size_t stride, BufferUsage usage, bool isDynamic)
     {
         auto d3d12Driver = static_cast<D3D12Driver*>(driver.Get());
-        return reinterpret_cast<GraphicsBuffer*>(CreateBuffer(d3d12Driver, size, usage, D3D12BufferType::Base));
+        return reinterpret_cast<GraphicsBuffer*>(CreateBuffer(d3d12Driver, size, stride, usage, D3D12BufferType::Base, isDynamic));
     }
 
     void DestroyGraphicsBuffer(NonNullPtr<GraphicsBuffer> buffer)
@@ -248,8 +229,9 @@ namespace Juliet::D3D12
     {
         auto d3d12Driver = static_cast<D3D12Driver*>(driver.Get());
         return reinterpret_cast<GraphicsTransferBuffer*>(
-            CreateBuffer(d3d12Driver, size, BufferUsage::None,
+            CreateBuffer(d3d12Driver, size, 0, BufferUsage::None,
-                         usage == TransferBufferUsage::Upload ? D3D12BufferType::TransferUpload : D3D12BufferType::TransferDownload));
+                         usage == TransferBufferUsage::Upload ? D3D12BufferType::TransferUpload : D3D12BufferType::TransferDownload,
+                         false));
     }
 
     void DestroyGraphicsTransferBuffer(NonNullPtr<GraphicsTransferBuffer> buffer)
@@ -276,6 +258,24 @@ namespace Juliet::D3D12
         d3d12Buffer->Handle->Unmap(0, nullptr);
     }
 
+    void* MapBuffer(NonNullPtr<GPUDriver> /*driver*/, NonNullPtr<GraphicsBuffer> buffer)
+    {
+        auto        d3d12Buffer = reinterpret_cast<D3D12Buffer*>(buffer.Get());
+        void*       ptr         = nullptr;
+        D3D12_RANGE readRange   = { 0, 0 };
+        if (FAILED(d3d12Buffer->Handle->Map(0, &readRange, &ptr)))
+        {
+            return nullptr;
+        }
+        return ptr;
+    }
+
+    void UnmapBuffer(NonNullPtr<GPUDriver> /*driver*/, NonNullPtr<GraphicsBuffer> buffer)
+    {
+        auto d3d12Buffer = reinterpret_cast<D3D12Buffer*>(buffer.Get());
+        d3d12Buffer->Handle->Unmap(0, nullptr);
+    }
+
     uint32 GetDescriptorIndex(NonNullPtr<GPUDriver> /*driver*/, NonNullPtr<GraphicsBuffer> buffer)
     {
         auto d3d12Buffer = reinterpret_cast<D3D12Buffer*>(buffer.Get());

Juliet/src/Graphics/D3D12/D3D12Buffer.h

@@ -20,7 +20,7 @@ namespace Juliet::D3D12
         size_t                    Size;
     };
 
-    extern GraphicsBuffer* CreateGraphicsBuffer(NonNullPtr<GPUDriver> driver, size_t size, BufferUsage usage);
+    extern GraphicsBuffer* CreateGraphicsBuffer(NonNullPtr<GPUDriver> driver, size_t size, size_t stride, BufferUsage usage, bool isDynamic);
     extern void            DestroyGraphicsBuffer(NonNullPtr<GraphicsBuffer> buffer);
 
     extern GraphicsTransferBuffer* CreateGraphicsTransferBuffer(NonNullPtr<GPUDriver> driver, size_t size, TransferBufferUsage usage);

Juliet/src/Graphics/D3D12/D3D12CommandList.cpp

@@ -246,7 +246,8 @@ namespace Juliet::D3D12
         d3d12Driver->GraphicsQueue->ExecuteCommandLists(1, ppCommandLists);
 
         // Acquire a fence and set it to the in-flight fence
-        d3d12CommandList->InFlightFence = Internal::AcquireFence(d3d12Driver);
+        d3d12CommandList->InFlightFence =
+            Internal::AcquireFence(d3d12Driver JULIET_DEBUG_PARAM(ConstString("SubmitCommandLists")));
         if (!d3d12CommandList->InFlightFence)
         {
             return false;
@@ -305,14 +306,22 @@ namespace Juliet::D3D12
             windowData->WindowFrameCounter = (windowData->WindowFrameCounter + 1) % d3d12Driver->FramesInFlight;
         }
 
-        // TODO : Correctly clean up and destroy
         // Check for cleanups
-        for (int32 i = d3d12Driver->SubmittedCommandListCount - 1; i >= 0; i -= 1)
+        {
+            int32 i = 0;
+            while (i < d3d12Driver->SubmittedCommandListCount)
             {
                 uint64 fenceValue = d3d12Driver->SubmittedCommandLists[i]->InFlightFence->Handle->GetCompletedValue();
                 if (fenceValue == D3D12_FENCE_SIGNAL_VALUE)
                 {
                     success &= Internal::CleanCommandList(d3d12Driver, d3d12Driver->SubmittedCommandLists[i], false);
+                    // CleanCommandList swaps [i] with last and decrements count.
+                    // Don't increment — re-check the swapped-in element.
+                }
+                else
+                {
+                    i += 1;
+                }
             }
         }
 
@@ -487,7 +496,8 @@ namespace Juliet::D3D12
             // Release Fence if needed
             if (commandList->AutoReleaseFence)
             {
-                ReleaseFence(driver.Get(), reinterpret_cast<Fence*>(commandList->InFlightFence));
+                ReleaseFence(driver.Get(), reinterpret_cast<Fence*>(commandList->InFlightFence)
+                                               JULIET_DEBUG_PARAM(ConstString("CleanCommandList")));
                 commandList->InFlightFence = nullptr;
             }
 
@@ -510,6 +520,7 @@ namespace Juliet::D3D12
                     {
                         driver->SubmittedCommandLists[idx] = driver->SubmittedCommandLists[driver->SubmittedCommandListCount - 1];
                         driver->SubmittedCommandListCount -= 1;
+                        break;
                     }
                 }
             }

Juliet/src/Graphics/D3D12/D3D12GraphicsDevice.cpp

@@ -23,12 +23,6 @@
 #define D3D12_CREATEDEVICE_FUNC "D3D12CreateDevice"
 #define D3D12_SERIALIZE_VERSIONED_ROOT_SIGNATURE_FUNC "D3D12SerializeVersionedRootSignature"
 
-extern "C" {
-// Used to enable the "Agility SDK" components
-__declspec(dllexport) extern const unsigned int D3D12SDKVersion = 615;
-__declspec(dllexport) extern const char*        D3D12SDKPath    = ".\\D3D12\\";
-}
-
 // TODO : Use LoadLibrary and not link to the lib. Allows failing earlier if Dx12 is not installed for some reason
 // + Will load the dll when needed
 // This will prevent us from using IID_ variables as they are defined in dxguid.lib
@@ -604,7 +598,8 @@ namespace Juliet::D3D12
             {
                 if (windowData->InFlightFences[idx] != nullptr)
                 {
-                    ReleaseFence(driver, windowData->InFlightFences[idx]);
+                    ReleaseFence(driver,
+                                 windowData->InFlightFences[idx] JULIET_DEBUG_PARAM(ConstString("DeatchFromWindow")));
                     windowData->InFlightFences[idx] = nullptr;
                 }
             }
@@ -1039,6 +1034,8 @@ namespace Juliet::D3D12
             device->DestroyGraphicsPipeline        = DestroyGraphicsPipeline;
             device->CreateGraphicsBuffer         = CreateGraphicsBuffer;
             device->DestroyGraphicsBuffer        = DestroyGraphicsBuffer;
+            device->MapGraphicsBuffer            = MapBuffer;
+            device->UnmapGraphicsBuffer          = UnmapBuffer;
             device->CreateGraphicsTransferBuffer   = CreateGraphicsTransferBuffer;
             device->DestroyGraphicsTransferBuffer  = DestroyGraphicsTransferBuffer;
             device->MapGraphicsTransferBuffer      = MapBuffer;

Juliet/src/Graphics/D3D12/D3D12SwapChain.cpp

@@ -140,7 +140,8 @@ namespace Juliet::D3D12
                 {
                     // Wait until the fence for the frame is signaled.
                     // In VSYNC this means waiting that the least recent presented frame is done
-                    if (!Wait(driver, true, &windowData->InFlightFences[windowData->WindowFrameCounter], 1))
+                    if (!Wait(driver, true, &windowData->InFlightFences[windowData->WindowFrameCounter],
+                              1 JULIET_DEBUG_PARAM(ConstString("AcquireSwapChainTexture"))))
                     {
                         return false;
                     }
@@ -155,7 +156,8 @@ namespace Juliet::D3D12
                     }
                 }
 
-                ReleaseFence(driver, windowData->InFlightFences[windowData->WindowFrameCounter]);
+                ReleaseFence(driver, windowData->InFlightFences[windowData->WindowFrameCounter] JULIET_DEBUG_PARAM(
+                                         ConstString("AcquireSwapChainTexture")));
                 windowData->InFlightFences[windowData->WindowFrameCounter] = nullptr;
             }
 
@@ -219,7 +221,8 @@ namespace Juliet::D3D12
 
         if (windowData->InFlightFences[windowData->WindowFrameCounter] != nullptr)
         {
-            if (!Wait(d3d12Driver, true, &windowData->InFlightFences[windowData->WindowFrameCounter], 1))
+            if (!Wait(d3d12Driver, true, &windowData->InFlightFences[windowData->WindowFrameCounter],
+                      1 JULIET_DEBUG_PARAM(ConstString("WaitForSwapchain"))))
             {
                 return false;
             }

Juliet/src/Graphics/D3D12/D3D12Synchronization.cpp

@@ -17,16 +17,21 @@ namespace Juliet::D3D12
                 driver->AvailableFenceCapacity = driver->AvailableFenceCapacity * 2;
                 driver->AvailableFences        = static_cast<D3D12Fence**>(
                     Realloc(driver->AvailableFences, sizeof(D3D12Fence*) * driver->AvailableFenceCapacity));
+
+                LogDebug(LogCategory::Graphics, "ReleaseFenceToPool With Realloc");
             }
             driver->AvailableFences[driver->AvailableFenceCount] = fence;
             driver->AvailableFenceCount += 1;
+
+            LogDebug(LogCategory::Graphics, "ReleaseFenceToPool %x fence. Handle %x | Event %x | Refcount %d",
+                     fence.Get(), fence->Handle, fence->Event, fence->ReferenceCount);
         }
     } // namespace
 
     bool WaitUntilGPUIsIdle(NonNullPtr<GPUDriver> driver)
     {
         auto        d3d12driver = static_cast<D3D12Driver*>(driver.Get());
-        D3D12Fence* fence       = Internal::AcquireFence(d3d12driver);
+        D3D12Fence* fence = Internal::AcquireFence(d3d12driver JULIET_DEBUG_PARAM(ConstString("WaitUntilGPUIsIdle")));
         if (!fence)
         {
             return false;
@@ -56,14 +61,19 @@ namespace Juliet::D3D12
             }
         }
 
-        ReleaseFence(driver, reinterpret_cast<Fence*>(fence));
+        ReleaseFence(driver, reinterpret_cast<Fence*>(fence) JULIET_DEBUG_PARAM(ConstString("WaitUntilGPUIsIdle")));
 
         bool result = true;
 
         // Clean up
-        for (int32 idx = d3d12driver->SubmittedCommandListCount - 1; idx >= 0; --idx)
+        {
+            int32 idx = 0;
+            while (idx < d3d12driver->SubmittedCommandListCount)
             {
                 result &= Internal::CleanCommandList(d3d12driver, d3d12driver->SubmittedCommandLists[idx], false);
+                // CleanCommandList swaps [idx] with last and decrements count.
+                // Don't increment — re-check the swapped-in element.
+            }
         }
 
         Internal::DisposePendingResourcces(d3d12driver);
@@ -71,16 +81,17 @@ namespace Juliet::D3D12
         return result;
     }
 
-    bool Wait(NonNullPtr<GPUDriver> driver, bool waitForAll, Fence* const* fences, uint32 numFences)
+    bool Wait(NonNullPtr<GPUDriver> driver, bool waitForAll, Fence* const* fences, uint32 numFences JULIET_DEBUG_PARAM(String querier))
     {
         auto d3d12driver = static_cast<D3D12Driver*>(driver.Get());
 
         // TODO: use scratch allocator for alloca (stack alloc)
-        auto events = static_cast<HANDLE*>(alloca(sizeof(HANDLE) * numFences));
+        HANDLE* events = static_cast<HANDLE*>(alloca(sizeof(HANDLE) * numFences));
+        MemoryZero(events, sizeof(HANDLE) * numFences);
 
         for (uint32 i = 0; i < numFences; ++i)
         {
-            auto fence = reinterpret_cast<D3D12Fence*>(fences[i]);
+            D3D12Fence* fence = reinterpret_cast<D3D12Fence*>(fences[i]);
 
             HRESULT res = fence->Handle->SetEventOnCompletion(D3D12_FENCE_SIGNAL_VALUE, fence->Event);
             if (FAILED(res))
@@ -91,6 +102,15 @@ namespace Juliet::D3D12
 
             events[i] = fence->Event;
         }
+#if JULIET_DEBUG
+        LogDebug(LogCategory::Graphics, "Waiting for %d fences. Querier %s", numFences, CStr(querier));
+#endif
+        for (uint32 i = 0; i < numFences; ++i)
+        {
+            D3D12Fence* d3d12fence = reinterpret_cast<D3D12Fence*>(fences[i]);
+            LogDebug(LogCategory::Graphics, "Waiting for %x fence. Handle %x | Event %x | Refcount %d", d3d12fence,
+                     d3d12fence->Handle, d3d12fence->Event, d3d12fence->ReferenceCount);
+        }
 
         DWORD waitResult = WaitForMultipleObjects(numFences, events, waitForAll, INFINITE);
         if (waitResult == WAIT_FAILED)
@@ -102,13 +122,20 @@ namespace Juliet::D3D12
         bool result = true;
 
         // Clean up
-        for (int32 idx = d3d12driver->SubmittedCommandListCount - 1; idx >= 0; --idx -= 1)
+        {
+            int32 idx = 0;
+            while (idx < d3d12driver->SubmittedCommandListCount)
             {
                 uint64 fenceValue = d3d12driver->SubmittedCommandLists[idx]->InFlightFence->Handle->GetCompletedValue();
                 if (fenceValue == D3D12_FENCE_SIGNAL_VALUE)
                 {
                     result &= Internal::CleanCommandList(d3d12driver, d3d12driver->SubmittedCommandLists[idx], false);
                 }
+                else
+                {
+                    idx += 1;
+                }
+            }
         }
 
         Internal::DisposePendingResourcces(d3d12driver);
@@ -122,11 +149,15 @@ namespace Juliet::D3D12
         return true;
     }
 
-    void ReleaseFence(NonNullPtr<GPUDriver> driver, NonNullPtr<Fence> fence)
+    void ReleaseFence(NonNullPtr<GPUDriver> driver, NonNullPtr<Fence> fence JULIET_DEBUG_PARAM(String querier))
     {
         auto d3d12driver = static_cast<D3D12Driver*>(driver.Get());
         auto d3d12Fence  = reinterpret_cast<D3D12Fence*>(fence.Get());
 
+#if JULIET_DEBUG
+        LogDebug(LogCategory::Graphics, "ReleaseFence | %x fence. Handle %x | Event %x | Refcount %d | Querier %s", d3d12Fence,
+                 d3d12Fence->Handle, d3d12Fence->Event, d3d12Fence->ReferenceCount, CStr(querier));
+#endif
         if (--d3d12Fence->ReferenceCount == 0)
         {
             ReleaseFenceToPool(d3d12driver, d3d12Fence);
@@ -170,7 +201,7 @@ namespace Juliet::D3D12
             }
         }
 
-        D3D12Fence* AcquireFence(NonNullPtr<D3D12Driver> driver)
+        D3D12Fence* AcquireFence(NonNullPtr<D3D12Driver> driver JULIET_DEBUG_PARAM(String querier))
         {
             D3D12Fence*  fence;
             ID3D12Fence* handle;
@@ -197,15 +228,28 @@ namespace Juliet::D3D12
                 fence->Handle         = handle;
                 fence->Event          = CreateEvent(nullptr, false, false, nullptr);
                 fence->ReferenceCount = 0;
+#if JULIET_DEBUG
+                LogDebug(LogCategory::Graphics, "Acquire Querier %s | Setting Signal to 0 NEW fence", CStr(querier));
+#endif
             }
             else
             {
                 fence = driver->AvailableFences[driver->AvailableFenceCount - 1];
                 driver->AvailableFenceCount -= 1;
                 fence->Handle->Signal(D3D12_FENCE_UNSIGNALED_VALUE);
+#if JULIET_DEBUG
+                LogDebug(LogCategory::Graphics, "Acquire Querier %s | Setting Signal to 0, RECYCLING", CStr(querier));
+#endif
             }
 
             fence->ReferenceCount += 1;
+            Assert(fence->ReferenceCount == 1);
+
+#if JULIET_DEBUG
+            LogDebug(LogCategory::Graphics, "Acquire Querier %s | %x fence. Handle %x | Event %x | Refcount %d",
+                     CStr(querier), fence, fence->Handle, fence->Event, fence->ReferenceCount);
+#endif
+
             return fence;
         }
 

Juliet/src/Graphics/D3D12/D3D12Synchronization.h

@@ -26,9 +26,10 @@ namespace Juliet::D3D12
     };
 
     extern bool WaitUntilGPUIsIdle(NonNullPtr<GPUDriver> driver);
-    extern bool Wait(NonNullPtr<GPUDriver> driver, bool waitForAll, Fence* const* fences, uint32 numFences);
+    extern bool Wait(NonNullPtr<GPUDriver> driver, bool waitForAll, Fence* const* fences,
+                     uint32 numFences JULIET_DEBUG_PARAM(String querier));
     extern bool QueryFence(NonNullPtr<GPUDriver> driver, NonNullPtr<Fence> fence);
-    extern void ReleaseFence(NonNullPtr<GPUDriver> driver, NonNullPtr<Fence> fence);
+    extern void ReleaseFence(NonNullPtr<GPUDriver> driver, NonNullPtr<Fence> fence JULIET_DEBUG_PARAM(String querier));
 
     namespace Internal
     {
@@ -36,7 +37,7 @@ namespace Juliet::D3D12
                                     D3D12_RESOURCE_STATES destinationState, ID3D12Resource* resource,
                                     uint32 subresourceIndex, bool needsUavBarrier);
 
-        extern D3D12Fence* AcquireFence(NonNullPtr<D3D12Driver> driver);
+        extern D3D12Fence* AcquireFence(NonNullPtr<D3D12Driver> driver JULIET_DEBUG_PARAM(String querier));
         extern void        DestroyFence(NonNullPtr<D3D12Fence> fence);
     } // namespace Internal
 } // namespace Juliet::D3D12

Juliet/src/Graphics/D3D12/D3D12Texture.cpp

@@ -1,13 +1,13 @@
+#include <algorithm>
 #include <Core/Common/EnumUtils.h>
 #include <Core/Logging/LogManager.h>
 #include <Core/Logging/LogTypes.h>
+#include <Core/Memory/Allocator.h>
 #include <Graphics/D3D12/D3D12CommandList.h>
+#include <Graphics/D3D12/D3D12GraphicsDevice.h>
 #include <Graphics/D3D12/D3D12Synchronization.h>
 #include <Graphics/D3D12/D3D12Texture.h>
-#include <Graphics/D3D12/D3D12GraphicsDevice.h>
 #include <Graphics/D3D12/D3D12Utils.h>
-#include <Core/Memory/Allocator.h>
-#include <algorithm>
 
 namespace Juliet::D3D12
 {
@@ -375,13 +375,9 @@ namespace Juliet::D3D12
         case TextureType::Texture_2D:
         case TextureType::Texture_2DArray:
         case TextureType::Texture_Cube:
-        case TextureType::Texture_CubeArray:
+        case TextureType::Texture_CubeArray: desc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D; break;
-            desc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D;
-            break;
         case TextureType::Texture_3D:
-        case TextureType::Texture_3DArray:
+        case TextureType::Texture_3DArray: desc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE3D; break;
-            desc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE3D;
-            break;
         }
 
         desc.Alignment          = 0;
@@ -396,14 +392,24 @@ namespace Juliet::D3D12
         desc.Flags              = D3D12_RESOURCE_FLAG_NONE;
 
         if ((createInfo.Flags & TextureUsageFlag::ColorTarget) != TextureUsageFlag::None)
+        {
             desc.Flags |= D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET;
+        }
         if ((createInfo.Flags & TextureUsageFlag::DepthStencilTarget) != TextureUsageFlag::None)
+        {
             desc.Flags |= D3D12_RESOURCE_FLAG_ALLOW_DEPTH_STENCIL;
+        }
         if ((createInfo.Flags & TextureUsageFlag::ComputeStorageWrite) != TextureUsageFlag::None)
+        {
             desc.Flags |= D3D12_RESOURCE_FLAG_ALLOW_UNORDERED_ACCESS;
+        }
 
         D3D12_HEAP_PROPERTIES heapProps = {};
         heapProps.Type                  = D3D12_HEAP_TYPE_DEFAULT;
+        heapProps.CPUPageProperty       = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
+        heapProps.MemoryPoolPreference  = D3D12_MEMORY_POOL_UNKNOWN;
+        heapProps.CreationNodeMask      = 0; // We don't do multi-adapter operation
+        heapProps.VisibleNodeMask       = 0; // We don't do multi-adapter operation
 
         ID3D12Resource*    resource    = nullptr;
         D3D12_CLEAR_VALUE  clearValue  = {};
@@ -426,8 +432,9 @@ namespace Juliet::D3D12
             pClearValue         = &clearValue;
         }
 
+        D3D12_RESOURCE_STATES initialState = GetDefaultTextureResourceState(createInfo.Flags);
         HRESULT hr = d3d12Driver->D3D12Device->CreateCommittedResource(&heapProps, D3D12_HEAP_FLAG_NONE, &desc,
-                                                          D3D12_RESOURCE_STATE_COMMON, pClearValue, IID_ID3D12Resource,
+                                                                       initialState, pClearValue, IID_ID3D12Resource,
                                                                        reinterpret_cast<void**>(&resource));
 
         if (FAILED(hr))
@@ -454,7 +461,8 @@ namespace Juliet::D3D12
         uint32 numLayers          = std::max<uint32>(1, createInfo.LayerCount);
         uint32 numMips            = std::max<uint32>(1, createInfo.MipLevelCount);
         texture->SubresourceCount = numLayers * numMips;
-        texture->Subresources   = static_cast<D3D12TextureSubresource*>(Calloc(texture->SubresourceCount, sizeof(D3D12TextureSubresource)));
+        texture->Subresources =
+            static_cast<D3D12TextureSubresource*>(Calloc(texture->SubresourceCount, sizeof(D3D12TextureSubresource)));
 
         for (uint32 layer = 0; layer < numLayers; ++layer)
         {
@@ -529,7 +537,6 @@ namespace Juliet::D3D12
         }
 
         return reinterpret_cast<Texture*>(textureContainer);
-
     }
 
     void DestroyTexture(NonNullPtr<GPUDriver> driver, NonNullPtr<Texture> texture)

Juliet/src/Graphics/DebugDisplayRenderer.cpp

@@ -2,8 +2,10 @@
 
 #include <Core/Logging/LogManager.h>
 #include <Core/Logging/LogTypes.h>
+#include <Core/HAL/Filesystem/Filesystem.h>
 #include <Core/Memory/Allocator.h>
 #include <Graphics/GraphicsPipeline.h>
+#include <Graphics/PushConstants.h>
 
 namespace Juliet
 {
@@ -84,11 +86,11 @@ namespace Juliet
             ShaderCreateInfo shaderCI   = {};
             shaderCI.EntryPoint         = entryPoint;
 
-            String vertPath      = WrapString("../../Assets/compiled/Debug.vert.dxil");
+            String vertPath      = GetAssetPath(WrapString("Debug.vert.dxil"));
             shaderCI.Stage       = ShaderStage::Vertex;
             Shader* vertexShader = CreateShader(device, vertPath, shaderCI);
 
-            String fragPath        = WrapString("../../Assets/compiled/Debug.frag.dxil");
+            String fragPath        = GetAssetPath(WrapString("Debug.frag.dxil"));
             shaderCI.Stage         = ShaderStage::Fragment;
             Shader* fragmentShader = CreateShader(device, fragPath, shaderCI);
 
@@ -298,19 +300,24 @@ namespace Juliet
         // Render depth-tested primitives (vertices at offset 0 in buffer)
         if (g_DebugState.DepthTestedVertexCount > 0 && g_DebugState.DepthTestedPipeline && g_DebugState.VertexBuffer)
         {
-            BindGraphicsPipeline(renderPass, g_DebugState.DepthTestedPipeline);
-
             // Pack VP matrix + buffer index into push constants
-            struct
+            PushData pushData = {};
-            {
+            pushData.ViewProjection = Camera_GetViewProjectionMatrix(camera);
-                Matrix vp;
+            pushData.MeshIndex      = 0;
-                uint32 bufferIndex;
+            pushData.TransformsBufferIndex = 0; // Not used by debug shader but layout must match
-                uint32 vertexOffset; // Offset in vertices (not bytes)
+            pushData.BufferIndex    = bufferIndex;
-                uint32 padding[2];
+            pushData.TextureIndex   = 0;
-            } pushData;
+            pushData.VertexOffset   = 0; // Depth-tested vertices start at 0
-            pushData.vp           = Camera_GetViewProjectionMatrix(camera);
+            pushData.Padding        = 0;
-            pushData.bufferIndex  = bufferIndex;
+            pushData.Scale[0] = 1.0f; pushData.Scale[1] = 1.0f;
-            pushData.vertexOffset = 0; // Depth-tested vertices start at 0
+            pushData.Translate[0] = 0.0f; pushData.Translate[1] = 0.0f;
+            
+            // Dummy light data as we don't light debug primitives
+            pushData.GlobalLightDirection = {0,0,-1};
+            pushData.GlobalLightPad = 0;
+            pushData.GlobalLightColor = {1,1,1};
+            pushData.GlobalAmbientIntensity = 1.0f;
+            
             SetPushConstants(cmdList, ShaderStage::Vertex, 0, sizeof(pushData) / sizeof(uint32), &pushData);
 
             DrawPrimitives(renderPass, g_DebugState.DepthTestedVertexCount, 1, 0, 0);
@@ -322,16 +329,23 @@ namespace Juliet
             BindGraphicsPipeline(renderPass, g_DebugState.OverlayPipeline);
 
             // Pack VP matrix + buffer index into push constants
-            struct
+            PushData pushData = {};
-            {
+            pushData.ViewProjection = Camera_GetViewProjectionMatrix(camera);
-                Matrix vp;
+            pushData.MeshIndex      = 0;
-                uint32 bufferIndex;
+            pushData.TransformsBufferIndex = 0;
-                uint32 vertexOffset; // Offset in vertices (not bytes)
+            pushData.BufferIndex    = bufferIndex;
-                uint32 padding[2];
+            pushData.TextureIndex   = 0;
-            } pushData;
+            pushData.VertexOffset   = kMaxDebugVertices / 2; // Overlay vertices start at half
-            pushData.vp           = Camera_GetViewProjectionMatrix(camera);
+            pushData.Padding        = 0;
-            pushData.bufferIndex  = bufferIndex;
+            pushData.Scale[0] = 1.0f; pushData.Scale[1] = 1.0f;
-            pushData.vertexOffset = kMaxDebugVertices / 2; // Overlay vertices start at half
+            pushData.Translate[0] = 0.0f; pushData.Translate[1] = 0.0f;
+            
+            // Dummy light data as we don't light debug primitives
+            pushData.GlobalLightDirection = {0,0,-1};
+            pushData.GlobalLightPad = 0;
+            pushData.GlobalLightColor = {1,1,1};
+            pushData.GlobalAmbientIntensity = 1.0f;
+            
             SetPushConstants(cmdList, ShaderStage::Vertex, 0, sizeof(pushData) / sizeof(uint32), &pushData);
 
             DrawPrimitives(renderPass, g_DebugState.OverlayVertexCount, 1, 0, 0);

Juliet/src/Graphics/Graphics.cpp

@@ -371,7 +371,7 @@ namespace Juliet
 
     GraphicsBuffer* CreateGraphicsBuffer(NonNullPtr<GraphicsDevice> device, const BufferCreateInfo& createInfo)
     {
-        return device->CreateGraphicsBuffer(device->Driver, createInfo.Size, createInfo.Usage);
+        return device->CreateGraphicsBuffer(device->Driver, createInfo.Size, createInfo.Stride, createInfo.Usage, createInfo.IsDynamic);
     }
 
     GraphicsTransferBuffer* CreateGraphicsTransferBuffer(NonNullPtr<GraphicsDevice> device, const TransferBufferCreateInfo& createInfo)
@@ -379,6 +379,16 @@ namespace Juliet
         return device->CreateGraphicsTransferBuffer(device->Driver, createInfo.Size, createInfo.Usage);
     }
 
+    void* MapGraphicsBuffer(NonNullPtr<GraphicsDevice> device, NonNullPtr<GraphicsBuffer> buffer)
+    {
+        return device->MapGraphicsBuffer(device->Driver, buffer);
+    }
+
+    void UnmapGraphicsBuffer(NonNullPtr<GraphicsDevice> device, NonNullPtr<GraphicsBuffer> buffer)
+    {
+        device->UnmapGraphicsBuffer(device->Driver, buffer);
+    }
+
     void* MapGraphicsTransferBuffer(NonNullPtr<GraphicsDevice> device, NonNullPtr<GraphicsTransferBuffer> buffer)
     {
         return device->MapGraphicsTransferBuffer(device->Driver, buffer);

Juliet/src/Graphics/GraphicsDevice.h

@@ -83,7 +83,7 @@ namespace Juliet
         // Fences
         bool (*WaitUntilGPUIsIdle)(NonNullPtr<GPUDriver> driver);
         bool (*QueryFence)(NonNullPtr<GPUDriver> driver, NonNullPtr<Fence> fence);
-        void (*ReleaseFence)(NonNullPtr<GPUDriver> driver, NonNullPtr<Fence> fence);
+        void (*ReleaseFence)(NonNullPtr<GPUDriver> driver, NonNullPtr<Fence> fence JULIET_DEBUG_PARAM(String querier));
 
         // Shaders
         Shader* (*CreateShader)(NonNullPtr<GPUDriver> driver, ByteBuffer shaderByteCode, ShaderCreateInfo& shaderCreateInfo);
@@ -100,9 +100,12 @@ namespace Juliet
         void (*DestroyTexture)(NonNullPtr<GPUDriver> driver, NonNullPtr<Texture> texture);
 
         // Buffers
-        GraphicsBuffer* (*CreateGraphicsBuffer)(NonNullPtr<GPUDriver> driver, size_t size, BufferUsage usage);
+        GraphicsBuffer* (*CreateGraphicsBuffer)(NonNullPtr<GPUDriver> driver, size_t size, size_t stride, BufferUsage usage, bool isDynamic);
         void (*DestroyGraphicsBuffer)(NonNullPtr<GraphicsBuffer> buffer);
 
+        void* (*MapGraphicsBuffer)(NonNullPtr<GPUDriver> driver, NonNullPtr<GraphicsBuffer> buffer);
+        void (*UnmapGraphicsBuffer)(NonNullPtr<GPUDriver> driver, NonNullPtr<GraphicsBuffer> buffer);
+
         GraphicsTransferBuffer* (*CreateGraphicsTransferBuffer)(NonNullPtr<GPUDriver> driver, size_t size, TransferBufferUsage usage);
         void (*DestroyGraphicsTransferBuffer)(NonNullPtr<GraphicsTransferBuffer> buffer);
 

Juliet/src/Graphics/ImGuiRenderer.cpp

@@ -5,6 +5,7 @@
 
 #include <Core/Logging/LogManager.h>
 #include <Core/Logging/LogTypes.h>
+#include <Core/HAL/Filesystem/Filesystem.h>
 #include <Core/Memory/MemoryArena.h>
 #include <Graphics/GraphicsPipeline.h>
 
@@ -127,11 +128,11 @@ namespace Juliet
         ShaderCreateInfo shaderCI   = {};
         shaderCI.EntryPoint         = entryPoint;
 
-        String vertPath           = WrapString("../../Assets/compiled/ImGui.vert.dxil");
+        String vertPath           = GetAssetPath(WrapString("ImGui.vert.dxil"));
         shaderCI.Stage            = ShaderStage::Vertex;
         g_ImGuiState.VertexShader = CreateShader(device, vertPath, shaderCI);
 
-        String fragPath             = WrapString("../../Assets/compiled/ImGui.frag.dxil");
+        String fragPath             = GetAssetPath(WrapString("ImGui.frag.dxil"));
         shaderCI.Stage              = ShaderStage::Fragment;
         g_ImGuiState.FragmentShader = CreateShader(device, fragPath, shaderCI);
 
@@ -149,8 +150,8 @@ namespace Juliet
 
         TextureCreateInfo texCI = {};
         texCI.Type              = TextureType::Texture_2D;
-        texCI.Width             = (uint32)width;
+        texCI.Width             = static_cast<uint32>(width);
-        texCI.Height            = (uint32)height;
+        texCI.Height            = static_cast<uint32>(height);
 
         texCI.Format        = TextureFormat::R8G8B8A8_UNORM;
         texCI.Flags         = TextureUsageFlag::Sampler;
@@ -159,10 +160,10 @@ namespace Juliet
         texCI.SampleCount   = TextureSampleCount::One;
 
         g_ImGuiState.FontTexture = CreateTexture(device, texCI);
-        io.Fonts->SetTexID((ImTextureID)g_ImGuiState.FontTexture);
+        io.Fonts->SetTexID(reinterpret_cast<ImTextureID>(g_ImGuiState.FontTexture));
 
         // Upload data
-        uint32 rowPitch        = (uint32)width * 4u;
+        uint32 rowPitch        = static_cast<uint32>(width) * 4u;
         uint32 alignedRowPitch = (rowPitch + 255u) & ~255u;
         uint32 textureSize     = alignedRowPitch * static_cast<uint32>(height);
 
@@ -176,7 +177,7 @@ namespace Juliet
             return false;
         }
 
-        auto dst = (uint8*)MapGraphicsTransferBuffer(device, tb);
+        auto* dst = static_cast<uint8*>(MapGraphicsTransferBuffer(device, tb));
 
         for (uint32 y = 0; y < static_cast<uint32>(height); ++y)
         {
@@ -314,13 +315,13 @@ namespace Juliet
         FrameResources& currentFrame = g_ImGuiState.Frames[g_ImGuiState.FrameIndex];
 
         // Upload Buffers
-        uint32 totalVtx = (uint32)drawData->TotalVtxCount;
+        uint32 totalVtx = static_cast<uint32>(drawData->TotalVtxCount);
-        uint32 totalIdx = (uint32)drawData->TotalIdxCount;
+        uint32 totalIdx = static_cast<uint32>(drawData->TotalIdxCount);
 
         EnsureBufferSize(currentFrame, totalVtx * sizeof(ImDrawVert), totalIdx * sizeof(ImDrawIdx));
 
-        auto vtxDst = (ImDrawVert*)MapGraphicsTransferBuffer(g_ImGuiState.Device, currentFrame.VertexUpload);
+        auto* vtxDst = static_cast<ImDrawVert*>(MapGraphicsTransferBuffer(g_ImGuiState.Device, currentFrame.VertexUpload));
-        auto idxDst = (ImDrawIdx*)MapGraphicsTransferBuffer(g_ImGuiState.Device, currentFrame.IndexUpload);
+        auto* idxDst = static_cast<ImDrawIdx*>(MapGraphicsTransferBuffer(g_ImGuiState.Device, currentFrame.IndexUpload));
 
         for (int n = 0; n < drawData->CmdListsCount; n++)
         {
@@ -402,28 +403,18 @@ namespace Juliet
                     SetScissorRect(renderPass, scissorRect);
 
                     // Bind Texture
-                    uint32 textureIndex = GetDescriptorIndex(g_ImGuiState.Device, (Texture*)pcmd->GetTexID());
+                    uint32 textureIndex = GetDescriptorIndex(g_ImGuiState.Device, reinterpret_cast<Texture*>(pcmd->GetTexID()));
 
                     // Push Constants
-                    // Layout: ViewProjection(64) + BufferIndex(4) + TextureIndex(4) + VertexOffset(4) + Padding(4) + Scale(8) + Translate(8)
+                    PushData pushData = {}; // Zero-initialize all fields
-                    struct
-                    {
-                        float  dummyVP[16]; // Occupy VP slot
-                        uint32 bufferIndex;
-                        uint32 textureIndex;
-                        uint32 vertexOffset; // Base vertex for indexed bindless drawing
-                        uint32 padding;      // Alignment padding
-                        float  scale[2];
-                        float  translate[2];
-                    } pushData = {}; // Zero-initialize all fields
 
-                    pushData.bufferIndex  = GetDescriptorIndex(g_ImGuiState.Device, currentFrame.VertexBuffer);
+                    pushData.BufferIndex  = GetDescriptorIndex(g_ImGuiState.Device, currentFrame.VertexBuffer);
-                    pushData.textureIndex = textureIndex;
+                    pushData.TextureIndex = textureIndex;
-                    pushData.vertexOffset = pcmd->VtxOffset + globalVtxOffset; // Pass vertex offset for bindless
+                    pushData.VertexOffset = pcmd->VtxOffset + globalVtxOffset; // Pass vertex offset for bindless
-                    pushData.scale[0]     = scale[0];
+                    pushData.Scale[0]     = scale[0];
-                    pushData.scale[1]     = scale[1];
+                    pushData.Scale[1]     = scale[1];
-                    pushData.translate[0] = translate[0];
+                    pushData.Translate[0] = translate[0];
-                    pushData.translate[1] = translate[1];
+                    pushData.Translate[1] = translate[1];
 
                     SetPushConstants(cmdList, ShaderStage::Vertex, 0, sizeof(pushData) / 4, &pushData);
 

Juliet/src/Graphics/Mesh.cpp

@@ -5,95 +5,5 @@
 
 namespace Juliet
 {
-    Mesh* CreateCubeMesh(NonNullPtr<Arena> arena)
-    {
-        Mesh* result = ArenaPushStruct<Mesh>(arena.Get());
-
-        constexpr Vertex vertexData[] = {
-            // Front Face (Z = -0.5f)
-            { { -0.5f, 0.5f, -0.5f }, { 0.0f, 0.0f } },  // 0: Top Left
-            { { 0.5f, 0.5f, -0.5f }, { 1.0f, 0.0f } },   // 1: Top Right
-            { { 0.5f, -0.5f, -0.5f }, { 1.0f, 1.0f } },  // 2: Bottom Right
-            { { -0.5f, -0.5f, -0.5f }, { 0.0f, 1.0f } }, // 3: Bottom Left
-
-            // Back Face (Z = 0.5f)
-            { { 0.5f, 0.5f, 0.5f }, { 0.0f, 0.0f } },   // 4: Top Left
-            { { -0.5f, 0.5f, 0.5f }, { 1.0f, 0.0f } },  // 5: Top Right
-            { { -0.5f, -0.5f, 0.5f }, { 1.0f, 1.0f } }, // 6: Bottom Right
-            { { 0.5f, -0.5f, 0.5f }, { 0.0f, 1.0f } },  // 7: Bottom Left
-
-            // Top Face (Y = 0.5f)
-            { { -0.5f, 0.5f, 0.5f }, { 0.0f, 0.0f } },  // 8: Top Left
-            { { 0.5f, 0.5f, 0.5f }, { 1.0f, 0.0f } },   // 9: Top Right
-            { { 0.5f, 0.5f, -0.5f }, { 1.0f, 1.0f } },  // 10: Bottom Right
-            { { -0.5f, 0.5f, -0.5f }, { 0.0f, 1.0f } }, // 11: Bottom Left
-
-            // Bottom Face (Y = -0.5f)
-            { { -0.5f, -0.5f, -0.5f }, { 0.0f, 0.0f } }, // 12: Top Left
-            { { 0.5f, -0.5f, -0.5f }, { 1.0f, 0.0f } },  // 13: Top Right
-            { { 0.5f, -0.5f, 0.5f }, { 1.0f, 1.0f } },   // 14: Bottom Right
-            { { -0.5f, -0.5f, 0.5f }, { 0.0f, 1.0f } },  // 15: Bottom Left
-
-            // Right Face (X = 0.5f)
-            { { 0.5f, 0.5f, -0.5f }, { 0.0f, 0.0f } },  // 16: Top Left
-            { { 0.5f, 0.5f, 0.5f }, { 1.0f, 0.0f } },   // 17: Top Right
-            { { 0.5f, -0.5f, 0.5f }, { 1.0f, 1.0f } },  // 18: Bottom Right
-            { { 0.5f, -0.5f, -0.5f }, { 0.0f, 1.0f } }, // 19: Bottom Left
-
-            // Left Face (X = -0.5f)
-            { { -0.5f, 0.5f, 0.5f }, { 0.0f, 0.0f } },   // 20: Top Left
-            { { -0.5f, 0.5f, -0.5f }, { 1.0f, 0.0f } },  // 21: Top Right
-            { { -0.5f, -0.5f, -0.5f }, { 1.0f, 1.0f } }, // 22: Bottom Right
-            { { -0.5f, -0.5f, 0.5f }, { 0.0f, 1.0f } }   // 23: Bottom Left
-        };
-        constexpr size_t cubeVertexCount = ArraySize(vertexData);
-        result->VertexCount              = cubeVertexCount;
-        result->Vertices                 = ArenaPushArray<Vertex>(arena.Get(), cubeVertexCount);
-        MemCopy(result->Vertices, vertexData, sizeof(Vertex) * cubeVertexCount);
-
-        constexpr uint16 indices[]      = { 0,  1,  2,  0,  2,  3,    // Front
-                                            4,  5,  6,  4,  6,  7,    // Back
-                                            8,  9,  10, 8,  10, 11,   // Top
-                                            12, 13, 14, 12, 14, 15,   // Bottom
-                                            16, 17, 18, 16, 18, 19,   // Right
-                                            20, 21, 22, 20, 22, 23 }; // Left
-        constexpr size_t indexCubeCount = ArraySize(indices);
-        result->IndexCount              = indexCubeCount;
-        result->Indices = ArenaPushArray<uint16>(arena.Get(), indexCubeCount JULIET_DEBUG_PARAM("Indices"));
-        MemCopy(result->Indices, indices, sizeof(uint16) * indexCubeCount);
-
-        return result;
-    }
-
-    Mesh* CreateQuadMesh(NonNullPtr<Arena> arena)
-    {
-        Mesh* result = ArenaPushStruct<Mesh>(arena.Get());
-
-        // Using the exact 6 vertices from the working triangles!
-        constexpr Vertex vertexData[] = {
-            // Triangle 1 (Clockwise)
-            { { -0.5f, -0.5f, 0.0f }, { 1.0f, 0.0f, 0.0f, 1.0f } }, // 0: Red
-            { { 0.0f, 0.5f, 0.0f }, { 0.0f, 1.0f, 0.0f, 1.0f } },   // 1: Green
-            { { 0.5f, -0.5f, 0.0f }, { 0.0f, 0.0f, 1.0f, 1.0f } },  // 2: Blue
-
-            // Triangle 2 (Clockwise)
-            { { -0.5f, 0.5f, 0.0f }, { 1.0f, 1.0f, 0.0f, 1.0f } }, // 3: Yellow
-            { { 0.0f, 0.8f, 0.0f }, { 0.0f, 1.0f, 1.0f, 1.0f } },  // 4: Cyan
-            { { 0.5f, 0.5f, 0.0f }, { 1.0f, 0.0f, 1.0f, 1.0f } }   // 5: Magenta
-        };
-        constexpr size_t triVertexCount = ArraySize(vertexData);
-        result->VertexCount             = triVertexCount;
-        result->Vertices                = ArenaPushArray<Vertex>(arena.Get(), triVertexCount);
-        MemCopy(result->Vertices, vertexData, sizeof(Vertex) * triVertexCount);
-
-        // Just the 6 indices for the two triangles
-        constexpr uint16 indices[]     = { 0, 1, 2, 3, 4, 5 };
-        constexpr size_t triIndexCount = ArraySize(indices);
-        result->IndexCount             = triIndexCount;
-        result->Indices = ArenaPushArray<uint16>(arena.Get(), triIndexCount JULIET_DEBUG_PARAM("Indices"));
-        MemCopy(result->Indices, indices, sizeof(uint16) * triIndexCount);
-
-        return result;
-    }
 
 } // namespace Juliet

Juliet/src/Graphics/MeshRenderer.cpp

@@ -0,0 +1,473 @@
+#include <Graphics/MeshRenderer.h>
+
+#include <Core/HAL/Filesystem/Filesystem.h>
+#include <Core/Logging/LogManager.h>
+#include <Core/Logging/LogTypes.h>
+#include <Core/Math/Matrix.h>
+#include <Graphics/GraphicsDevice.h>
+#include <Graphics/Mesh.h>
+#include <Graphics/VertexData.h>
+
+namespace Juliet
+{
+    namespace
+    {
+        struct MeshRendererState
+        {
+            GraphicsDevice*         Device           = nullptr;
+            GraphicsPipeline*       Pipeline         = nullptr;
+            GraphicsBuffer*         VertexBuffer     = nullptr;
+            GraphicsBuffer*         IndexBuffer      = nullptr;
+            GraphicsBuffer*         LightsBuffer     = nullptr;
+            GraphicsBuffer*         TransformsBuffer = nullptr;
+            GraphicsTransferBuffer* LoadCopyBuffer   = nullptr;
+
+            VectorArena<Mesh, kDefaultMeshNumber, false>       Meshes;
+            VectorArena<Vertex, kDefaultVertexCount, false>    Vertices;
+            VectorArena<Index, kDefaultIndexCount, false>      Indices;
+            VectorArena<PointLight, kDefaultLightCount, false> PointLights;
+
+            PointLight* MappedLights     = nullptr;
+            Matrix*     MappedTransforms = nullptr;
+        };
+
+        MeshRendererState g_MeshRenderer;
+    } // namespace
+
+    void InitializeMeshRenderer(NonNullPtr<Arena> arena)
+    {
+        g_MeshRenderer.Meshes.Create(arena JULIET_DEBUG_PARAM("Meshes"));
+        g_MeshRenderer.Vertices.Create(arena JULIET_DEBUG_PARAM("Vertices"));
+        g_MeshRenderer.Indices.Create(arena JULIET_DEBUG_PARAM("Indices"));
+        g_MeshRenderer.PointLights.Create(arena JULIET_DEBUG_PARAM("PointLights"));
+    }
+
+    bool InitializeMeshRendererGraphics(NonNullPtr<GraphicsDevice> device, NonNullPtr<Window> window)
+    {
+        bool result = true;
+
+        GraphicsDevice* graphicsDevice = g_MeshRenderer.Device = device.Get();
+
+        // Create graphics pipeline
+        String           entryPoint = WrapString("main");
+        ShaderCreateInfo shaderCI   = {};
+        shaderCI.EntryPoint         = entryPoint;
+
+        String shaderPath    = GetAssetPath(WrapString("Triangle.vert.dxil"));
+        shaderCI.Stage       = ShaderStage::Vertex;
+        Shader* vertexShader = CreateShader(graphicsDevice, shaderPath, shaderCI);
+
+        shaderPath             = GetAssetPath(WrapString("SolidColor.frag.dxil"));
+        shaderCI.Stage         = ShaderStage::Fragment;
+        Shader* fragmentShader = CreateShader(graphicsDevice, shaderPath, shaderCI);
+
+        ColorTargetDescription colorTargetDescription = {};
+        colorTargetDescription.Format                 = GetSwapChainTextureFormat(graphicsDevice, window);
+
+        GraphicsPipelineCreateInfo pipelineCI         = {};
+        pipelineCI.VertexShader                       = vertexShader;
+        pipelineCI.FragmentShader                     = fragmentShader;
+        pipelineCI.PrimitiveType                      = PrimitiveType::TriangleList;
+        pipelineCI.TargetInfo                         = { .ColorTargetDescriptions = &colorTargetDescription,
+                                                          .NumColorTargets         = 1,
+                                                          .DepthStencilFormat      = TextureFormat::D32_FLOAT,
+                                                          .HasDepthStencilTarget   = true };
+        pipelineCI.RasterizerState.FillMode           = FillMode::Solid;
+        pipelineCI.RasterizerState.CullMode           = CullMode::None;
+        pipelineCI.RasterizerState.FrontFace          = FrontFace::Clockwise;
+        pipelineCI.DepthStencilState.EnableDepthTest  = true;
+        pipelineCI.DepthStencilState.EnableDepthWrite = true;
+        pipelineCI.DepthStencilState.CompareOperation = CompareOperation::Less;
+
+        g_MeshRenderer.Pipeline = CreateGraphicsPipeline(graphicsDevice, pipelineCI);
+        if (g_MeshRenderer.Pipeline == nullptr)
+        {
+            LogError(LogCategory::Graphics, "Failed to create graphics pipeline!");
+            result = false;
+        }
+
+        // Create the vertex and index buffers
+        BufferCreateInfo vertexBufferCI = {};
+        vertexBufferCI.Size             = kGeometryPage;
+        vertexBufferCI.Stride           = 0;
+        vertexBufferCI.Usage            = BufferUsage::StructuredBuffer;
+        g_MeshRenderer.VertexBuffer     = CreateGraphicsBuffer(graphicsDevice, vertexBufferCI);
+        Assert(g_MeshRenderer.VertexBuffer != nullptr);
+
+        BufferCreateInfo indexBufferCI = {};
+        indexBufferCI.Size             = kIndexPage;
+        indexBufferCI.Usage            = BufferUsage::IndexBuffer;
+        g_MeshRenderer.IndexBuffer     = CreateGraphicsBuffer(graphicsDevice, indexBufferCI);
+        Assert(g_MeshRenderer.IndexBuffer != nullptr);
+
+        // Lights Buffer
+        BufferCreateInfo lightsBufferCI = {};
+        lightsBufferCI.Size             = 1024 * sizeof(PointLight); // Max 1024 lights for now
+        lightsBufferCI.Stride           = sizeof(PointLight);
+        lightsBufferCI.Usage            = BufferUsage::StructuredBuffer;
+        lightsBufferCI.IsDynamic        = true;
+        g_MeshRenderer.LightsBuffer     = CreateGraphicsBuffer(graphicsDevice, lightsBufferCI);
+        Assert(g_MeshRenderer.LightsBuffer != nullptr);
+        g_MeshRenderer.MappedLights = static_cast<PointLight*>(MapGraphicsBuffer(graphicsDevice, g_MeshRenderer.LightsBuffer));
+        Assert(g_MeshRenderer.MappedLights != nullptr);
+
+        // Transforms Buffer
+        BufferCreateInfo transformsBufferCI = {};
+        transformsBufferCI.Size             = 10000 * sizeof(Matrix); // Max 10000 meshes for now
+        transformsBufferCI.Stride           = sizeof(Matrix);
+        transformsBufferCI.Usage            = BufferUsage::StructuredBuffer;
+        transformsBufferCI.IsDynamic        = true;
+        g_MeshRenderer.TransformsBuffer     = CreateGraphicsBuffer(graphicsDevice, transformsBufferCI);
+        Assert(g_MeshRenderer.TransformsBuffer != nullptr);
+        g_MeshRenderer.MappedTransforms =
+            static_cast<Matrix*>(MapGraphicsBuffer(graphicsDevice, g_MeshRenderer.TransformsBuffer));
+        Assert(g_MeshRenderer.MappedTransforms != nullptr);
+
+        // Sync existing lights that might have been added before graphics initialization
+        for (index_t i = 0; i < g_MeshRenderer.PointLights.Count; ++i)
+        {
+            g_MeshRenderer.MappedLights[i] = g_MeshRenderer.PointLights.Data[i];
+        }
+
+        if (vertexShader)
+        {
+            DestroyShader(graphicsDevice, vertexShader);
+        }
+        if (fragmentShader)
+        {
+            DestroyShader(graphicsDevice, fragmentShader);
+        }
+
+        // Load evereything that is already in the vectors
+        CommandList* loadCmd = AcquireCommandList(device);
+        LoadMeshesOnGPU(loadCmd);
+        SubmitCommandLists(loadCmd);
+        return result;
+    }
+
+    void ShutdownMeshRendererGraphics()
+    {
+        if (g_MeshRenderer.LoadCopyBuffer)
+        {
+            UnmapGraphicsTransferBuffer(g_MeshRenderer.Device, g_MeshRenderer.LoadCopyBuffer);
+            DestroyGraphicsTransferBuffer(g_MeshRenderer.Device, g_MeshRenderer.LoadCopyBuffer);
+            g_MeshRenderer.LoadCopyBuffer = nullptr;
+        }
+
+        DestroyGraphicsBuffer(g_MeshRenderer.Device, g_MeshRenderer.IndexBuffer);
+        DestroyGraphicsBuffer(g_MeshRenderer.Device, g_MeshRenderer.VertexBuffer);
+
+        if (g_MeshRenderer.LightsBuffer)
+        {
+            UnmapGraphicsBuffer(g_MeshRenderer.Device, g_MeshRenderer.LightsBuffer);
+            DestroyGraphicsBuffer(g_MeshRenderer.Device, g_MeshRenderer.LightsBuffer);
+            g_MeshRenderer.LightsBuffer = nullptr;
+        }
+
+        if (g_MeshRenderer.TransformsBuffer)
+        {
+            UnmapGraphicsBuffer(g_MeshRenderer.Device, g_MeshRenderer.TransformsBuffer);
+            DestroyGraphicsBuffer(g_MeshRenderer.Device, g_MeshRenderer.TransformsBuffer);
+            g_MeshRenderer.TransformsBuffer = nullptr;
+        }
+    }
+
+    void ShutdownMeshRenderer()
+    {
+        g_MeshRenderer.Indices.Destroy();
+        g_MeshRenderer.Vertices.Destroy();
+        g_MeshRenderer.Meshes.Destroy();
+        g_MeshRenderer.PointLights.Destroy();
+    }
+
+    void LoadMeshesOnGPU(NonNullPtr<CommandList> cmdList)
+    {
+        if (g_MeshRenderer.Meshes.IsEmpty())
+        {
+            return;
+        }
+
+        // Loading everything in one go.
+        // Destroy the buffer at the end
+
+        TransferBufferCreateInfo uploadBCI = {};
+        uploadBCI.Usage                    = TransferBufferUsage::Upload;
+        uploadBCI.Size                     = kGeometryPage + kIndexPage;
+        g_MeshRenderer.LoadCopyBuffer      = CreateGraphicsTransferBuffer(g_MeshRenderer.Device, uploadBCI);
+
+        void* map = MapGraphicsTransferBuffer(g_MeshRenderer.Device, g_MeshRenderer.LoadCopyBuffer);
+
+        Vertex* vertices = g_MeshRenderer.Vertices.Data;
+        if (!vertices)
+        {
+            UnmapGraphicsTransferBuffer(g_MeshRenderer.Device, g_MeshRenderer.LoadCopyBuffer);
+            DestroyGraphicsTransferBuffer(g_MeshRenderer.Device, g_MeshRenderer.LoadCopyBuffer);
+            g_MeshRenderer.LoadCopyBuffer = nullptr;
+            return;
+        }
+
+        Index* indices = g_MeshRenderer.Indices.Data;
+        if (!indices)
+        {
+            UnmapGraphicsTransferBuffer(g_MeshRenderer.Device, g_MeshRenderer.LoadCopyBuffer);
+            DestroyGraphicsTransferBuffer(g_MeshRenderer.Device, g_MeshRenderer.LoadCopyBuffer);
+            g_MeshRenderer.LoadCopyBuffer = nullptr;
+            return;
+        }
+
+        // Copy all meshes! This supports only one page for now
+        // Copy ALL Vertices in one block
+        size_t totalVertexBytes = g_MeshRenderer.Vertices.Count * sizeof(Vertex);
+        MemCopy(map, g_MeshRenderer.Vertices.Data, totalVertexBytes);
+
+        // Copy ALL Indices in one block
+        size_t indexOfByteOffset = (kGeometryPage + 255) & static_cast<size_t>(~255);
+        uint8* ptrOneByte        = static_cast<uint8*>(map);
+        size_t totalIndexBytes   = g_MeshRenderer.Indices.Count * sizeof(Index);
+
+        MemCopy(ptrOneByte + indexOfByteOffset, g_MeshRenderer.Indices.Data, totalIndexBytes);
+
+        UnmapGraphicsTransferBuffer(g_MeshRenderer.Device, g_MeshRenderer.LoadCopyBuffer);
+
+        CopyBuffer(cmdList, g_MeshRenderer.VertexBuffer, g_MeshRenderer.LoadCopyBuffer, totalVertexBytes, 0, 0);
+        CopyBuffer(cmdList, g_MeshRenderer.IndexBuffer, g_MeshRenderer.LoadCopyBuffer, totalIndexBytes, 0, indexOfByteOffset);
+
+        // Transition vertex buffer to SRV state (this barrier waits for copy to complete)
+        TransitionBufferToReadable(cmdList, g_MeshRenderer.VertexBuffer);
+        TransitionBufferToReadable(cmdList, g_MeshRenderer.IndexBuffer);
+    }
+
+    void RenderMeshes(NonNullPtr<RenderPass> pass, NonNullPtr<CommandList> cmdList, PushData& pushData)
+    {
+        // First destroy any buffer that needs to be
+        if (g_MeshRenderer.LoadCopyBuffer)
+        {
+            WaitUntilGPUIsIdle(g_MeshRenderer.Device);
+            UnmapGraphicsTransferBuffer(g_MeshRenderer.Device, g_MeshRenderer.LoadCopyBuffer);
+            DestroyGraphicsTransferBuffer(g_MeshRenderer.Device, g_MeshRenderer.LoadCopyBuffer);
+            g_MeshRenderer.LoadCopyBuffer = nullptr;
+        }
+
+        BindGraphicsPipeline(pass, g_MeshRenderer.Pipeline);
+
+        uint32 vertexDescriptorIndex = GetDescriptorIndex(g_MeshRenderer.Device, g_MeshRenderer.VertexBuffer);
+        uint32 lightDescriptorIndex  = GetDescriptorIndex(g_MeshRenderer.Device, g_MeshRenderer.LightsBuffer);
+
+        uint32 transformsDescriptorIndex = GetDescriptorIndex(g_MeshRenderer.Device, g_MeshRenderer.TransformsBuffer);
+
+        pushData.BufferIndex           = vertexDescriptorIndex;
+        pushData.LightBufferIndex      = lightDescriptorIndex;
+        pushData.TransformsBufferIndex = transformsDescriptorIndex;
+        pushData.ActiveLightCount      = static_cast<uint32>(g_MeshRenderer.PointLights.Count);
+
+        SetIndexBuffer(cmdList, g_MeshRenderer.IndexBuffer, IndexFormat::UInt16, g_MeshRenderer.Indices.Count, 0);
+
+        uint32 meshIndex = 0;
+        for (Mesh& mesh : g_MeshRenderer.Meshes)
+        {
+            if (g_MeshRenderer.MappedTransforms)
+            {
+                g_MeshRenderer.MappedTransforms[meshIndex] = mesh.Transform;
+            }
+
+            pushData.MeshIndex    = meshIndex;
+            pushData.TextureIndex = 0;
+            pushData.VertexOffset = static_cast<uint32>(mesh.VertexOffset);
+            pushData.Padding      = 0;
+            pushData.Scale[0]     = 1.0f;
+            pushData.Scale[1]     = 1.0f;
+            pushData.Translate[0] = 0.0f;
+            pushData.Translate[1] = 0.0f;
+            SetPushConstants(cmdList, ShaderStage::Vertex, 0, sizeof(pushData) / 4, &pushData);
+            DrawIndexedPrimitives(pass, static_cast<uint32>(mesh.IndexCount), 1, static_cast<uint32>(mesh.IndexOffset),
+                                  static_cast<uint32>(mesh.VertexOffset), 0);
+            meshIndex++;
+        }
+    }
+
+    LightID AddPointLight(const PointLight& light)
+    {
+        Assert(g_MeshRenderer.PointLights.Count < kDefaultLightCount);
+        LightID id = g_MeshRenderer.PointLights.Count;
+        g_MeshRenderer.PointLights.PushBack(light);
+        if (g_MeshRenderer.MappedLights)
+        {
+            g_MeshRenderer.MappedLights[id] = light;
+        }
+        return id;
+    }
+
+    void SetPointLightPosition(LightID id, const Vector3& position)
+    {
+        Assert(id < static_cast<LightID>(g_MeshRenderer.PointLights.Count));
+        g_MeshRenderer.PointLights.Data[id].Position = position;
+        if (g_MeshRenderer.MappedLights)
+        {
+            g_MeshRenderer.MappedLights[id].Position = position;
+        }
+    }
+
+    void SetPointLightColor(LightID id, const Vector3& color)
+    {
+        Assert(id < static_cast<LightID>(g_MeshRenderer.PointLights.Count));
+        g_MeshRenderer.PointLights.Data[id].Color = color;
+        if (g_MeshRenderer.MappedLights)
+        {
+            g_MeshRenderer.MappedLights[id].Color = color;
+        }
+    }
+
+    void SetPointLightRadius(LightID id, float radius)
+    {
+        Assert(id < static_cast<LightID>(g_MeshRenderer.PointLights.Count));
+        g_MeshRenderer.PointLights.Data[id].Radius = radius;
+        if (g_MeshRenderer.MappedLights)
+        {
+            g_MeshRenderer.MappedLights[id].Radius = radius;
+        }
+    }
+
+    void SetPointLightIntensity(LightID id, float intensity)
+    {
+        Assert(id < static_cast<LightID>(g_MeshRenderer.PointLights.Count));
+        g_MeshRenderer.PointLights.Data[id].Intensity = intensity;
+        if (g_MeshRenderer.MappedLights)
+        {
+            g_MeshRenderer.MappedLights[id].Intensity = intensity;
+        }
+    }
+
+    void ClearPointLights()
+    {
+        g_MeshRenderer.PointLights.Clear();
+    }
+
+    MeshID AddCube()
+    {
+        Mesh result = {};
+
+        constexpr Vertex vertexData[] = { // Front Face (Z = -0.5f) — Red
+                                          { { -0.5f, 0.5f, -0.5f }, { 0.0f, 0.0f, -1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { 0.5f, 0.5f, -0.5f }, { 0.0f, 0.0f, -1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { 0.5f, -0.5f, -0.5f }, { 0.0f, 0.0f, -1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { -0.5f, -0.5f, -0.5f }, { 0.0f, 0.0f, -1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+
+                                          // Back Face (Z = 0.5f) — Green
+                                          { { 0.5f, 0.5f, 0.5f }, { 0.0f, 0.0f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { -0.5f, 0.5f, 0.5f }, { 0.0f, 0.0f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { -0.5f, -0.5f, 0.5f }, { 0.0f, 0.0f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { 0.5f, -0.5f, 0.5f }, { 0.0f, 0.0f, 1.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+
+                                          // Top Face (Y = 0.5f) — Blue
+                                          { { -0.5f, 0.5f, 0.5f }, { 0.0f, 1.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { 0.5f, 0.5f, 0.5f }, { 0.0f, 1.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { 0.5f, 0.5f, -0.5f }, { 0.0f, 1.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { -0.5f, 0.5f, -0.5f }, { 0.0f, 1.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+
+                                          // Bottom Face (Y = -0.5f) — Yellow
+                                          { { -0.5f, -0.5f, -0.5f }, { 0.0f, -1.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { 0.5f, -0.5f, -0.5f }, { 0.0f, -1.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { 0.5f, -0.5f, 0.5f }, { 0.0f, -1.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { -0.5f, -0.5f, 0.5f }, { 0.0f, -1.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+
+                                          // Right Face (X = 0.5f) — Cyan
+                                          { { 0.5f, 0.5f, -0.5f }, { 1.0f, 0.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { 0.5f, 0.5f, 0.5f }, { 1.0f, 0.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { 0.5f, -0.5f, 0.5f }, { 1.0f, 0.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { 0.5f, -0.5f, -0.5f }, { 1.0f, 0.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+
+                                          // Left Face (X = -0.5f) — Magenta
+                                          { { -0.5f, 0.5f, 0.5f }, { -1.0f, 0.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { -0.5f, 0.5f, -0.5f }, { -1.0f, 0.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { -0.5f, -0.5f, -0.5f }, { -1.0f, 0.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } },
+                                          { { -0.5f, -0.5f, 0.5f }, { -1.0f, 0.0f, 0.0f }, { 1.0f, 1.0f, 1.0f, 1.0f } }
+        };
+        constexpr size_t cubeVertexCount = ArraySize(vertexData);
+        result.VertexCount               = cubeVertexCount;
+        result.VertexOffset              = g_MeshRenderer.Vertices.Count;
+        g_MeshRenderer.Vertices.PushBack(vertexData, cubeVertexCount);
+
+        constexpr uint16 indices[]      = { 0,  1,  2,  0,  2,  3,    // Front
+                                            4,  5,  6,  4,  6,  7,    // Back
+                                            8,  9,  10, 8,  10, 11,   // Top
+                                            12, 13, 14, 12, 14, 15,   // Bottom
+                                            16, 17, 18, 16, 18, 19,   // Right
+                                            20, 21, 22, 20, 22, 23 }; // Left
+        constexpr size_t indexCubeCount = ArraySize(indices);
+        result.IndexCount               = indexCubeCount;
+        result.IndexOffset              = g_MeshRenderer.Indices.Count;
+        g_MeshRenderer.Indices.PushBack(indices, indexCubeCount);
+
+        MeshID id = g_MeshRenderer.Meshes.Count;
+        g_MeshRenderer.Meshes.PushBack(result);
+        return id;
+    }
+
+    MeshID AddQuad()
+    {
+        // Mesh result = {};
+
+        // // Using the exact 6 vertices from the working triangles!
+        // constexpr Vertex vertexData[] = {
+        //     // Triangle 1 (Clockwise)
+        //     { { -0.5f, -0.5f, 0.0f }, { 1.0f, 0.0f, 0.0f, 1.0f } }, // 0: Red
+        //     { { 0.0f, 0.5f, 0.0f }, { 0.0f, 1.0f, 0.0f, 1.0f } },   // 1: Green
+        //     { { 0.5f, -0.5f, 0.0f }, { 0.0f, 0.0f, 1.0f, 1.0f } },  // 2: Blue
+        //
+        //     // Triangle 2 (Clockwise)
+        //     { { -0.5f, 0.5f, 0.0f }, { 1.0f, 1.0f, 0.0f, 1.0f } }, // 3: Yellow
+        //     { { 0.0f, 0.8f, 0.0f }, { 0.0f, 1.0f, 1.0f, 1.0f } },  // 4: Cyan
+        //     { { 0.5f, 0.5f, 0.0f }, { 1.0f, 0.0f, 1.0f, 1.0f } }   // 5: Magenta
+        // };
+        // constexpr size_t triVertexCount = ArraySize(vertexData);
+        // result.VertexCount              = triVertexCount;
+        // result.Vertices                 = ArenaPushArray<Vertex>(arena.Get(), triVertexCount);
+        // MemCopy(result.Vertices, vertexData, sizeof(Vertex) * triVertexCount);
+        //
+        // // Just the 6 indices for the two triangles
+        // constexpr uint16 indices[]     = { 0, 1, 2, 3, 4, 5 };
+        // constexpr size_t triIndexCount = ArraySize(indices);
+        // result.IndexCount              = triIndexCount;
+        // result.Indices = ArenaPushArray<uint16>(arena.Get(), triIndexCount JULIET_DEBUG_PARAM("Indices"));
+        // MemCopy(result.Indices, indices, sizeof(uint16) * triIndexCount);
+        //
+        // g_MeshRenderer.Meshes.PushBack(std::move(result));
+        return g_MeshRenderer.Meshes.Count - 1;
+    }
+
+    void SetMeshTransform(MeshID id, const Matrix& transform)
+    {
+        Assert(id < static_cast<MeshID>(g_MeshRenderer.Meshes.Count));
+        g_MeshRenderer.Meshes.Data[id].Transform = transform;
+    }
+
+#if ALLOW_SHADER_HOT_RELOAD
+    void ReloadMeshRendererShaders()
+    {
+        auto* pipeline = g_MeshRenderer.Pipeline;
+        auto* device   = g_MeshRenderer.Device;
+
+        String           entryPoint = WrapString("main");
+        ShaderCreateInfo shaderCI   = {};
+        shaderCI.EntryPoint         = entryPoint;
+        String shaderPath           = GetAssetPath(WrapString("Triangle.vert.dxil"));
+        shaderCI.Stage              = ShaderStage::Vertex;
+        Shader* vertexShader        = CreateShader(device, shaderPath, shaderCI);
+
+        shaderPath             = GetAssetPath(WrapString("SolidColor.frag.dxil"));
+        shaderCI.Stage         = ShaderStage::Fragment;
+        Shader* fragmentShader = CreateShader(device, shaderPath, shaderCI);
+
+        UpdateGraphicsPipelineShaders(device, pipeline, vertexShader, fragmentShader);
+
+        if (vertexShader)
+        {
+            DestroyShader(device, vertexShader);
+        }
+        if (fragmentShader)
+        {
+            DestroyShader(device, fragmentShader);
+        }
+    }
+#endif
+} // namespace Juliet

Juliet/src/Graphics/SkyboxRenderer.cpp

@@ -0,0 +1,104 @@
+#include <Graphics/SkyboxRenderer.h>
+
+#include <Core/HAL/Filesystem/Filesystem.h>
+#include <Core/Logging/LogManager.h>
+#include <Core/Logging/LogTypes.h>
+#include <Graphics/GraphicsDevice.h>
+#include <Graphics/PushConstants.h>
+
+namespace Juliet
+{
+    namespace
+    {
+        SkyboxRenderer g_SkyboxRenderer;
+    } // namespace
+
+    bool InitializeSkyboxRenderer(NonNullPtr<GraphicsDevice> device, NonNullPtr<Window> window)
+    {
+        bool result = true;
+
+        GraphicsDevice* graphicsDevice = g_SkyboxRenderer.Device = device.Get();
+
+        String skyboxVSEntry = WrapString("main");
+        ShaderCreateInfo skyboxVSCI = {};
+        skyboxVSCI.EntryPoint = skyboxVSEntry;
+        skyboxVSCI.Stage = ShaderStage::Vertex;
+        String vsPath = GetAssetPath(WrapString("Skybox.vert.dxil"));
+        Shader* skyboxVS = CreateShader(graphicsDevice, vsPath, skyboxVSCI);
+
+        String skyboxFSEntry = WrapString("main");
+        ShaderCreateInfo skyboxFSCI = {};
+        skyboxFSCI.EntryPoint = skyboxFSEntry;
+        skyboxFSCI.Stage = ShaderStage::Fragment;
+        String fsPath = GetAssetPath(WrapString("Skybox.frag.dxil"));
+        Shader* skyboxFS = CreateShader(graphicsDevice, fsPath, skyboxFSCI);
+
+        ColorTargetDescription colorTargetDesc = {};
+        colorTargetDesc.Format = GetSwapChainTextureFormat(graphicsDevice, window);
+
+        GraphicsPipelineCreateInfo skyboxPipelineCI = {};
+        skyboxPipelineCI.VertexShader = skyboxVS;
+        skyboxPipelineCI.FragmentShader = skyboxFS;
+        skyboxPipelineCI.PrimitiveType = PrimitiveType::TriangleList;
+        skyboxPipelineCI.TargetInfo.ColorTargetDescriptions = &colorTargetDesc;
+        skyboxPipelineCI.TargetInfo.NumColorTargets = 1;
+        skyboxPipelineCI.TargetInfo.DepthStencilFormat = TextureFormat::D32_FLOAT;
+        skyboxPipelineCI.TargetInfo.HasDepthStencilTarget = true;
+        skyboxPipelineCI.RasterizerState.FillMode = FillMode::Solid;
+        skyboxPipelineCI.RasterizerState.CullMode = CullMode::None;
+        skyboxPipelineCI.RasterizerState.FrontFace = FrontFace::Clockwise;
+        skyboxPipelineCI.DepthStencilState.EnableDepthTest = true;
+        skyboxPipelineCI.DepthStencilState.EnableDepthWrite = false;
+        skyboxPipelineCI.DepthStencilState.CompareOperation = CompareOperation::LessOrEqual;
+
+        g_SkyboxRenderer.Pipeline = CreateGraphicsPipeline(graphicsDevice, skyboxPipelineCI);
+        if (g_SkyboxRenderer.Pipeline == nullptr)
+        {
+            LogError(LogCategory::Graphics, "Failed to create skybox pipeline!");
+            result = false;
+        }
+
+        if (skyboxVS) DestroyShader(graphicsDevice, skyboxVS);
+        if (skyboxFS) DestroyShader(graphicsDevice, skyboxFS);
+
+        return result;
+    }
+
+    void ShutdownSkyboxRenderer()
+    {
+        if (g_SkyboxRenderer.Pipeline)
+        {
+            DestroyGraphicsPipeline(g_SkyboxRenderer.Device, g_SkyboxRenderer.Pipeline);
+            g_SkyboxRenderer.Pipeline = nullptr;
+        }
+
+        g_SkyboxRenderer = {};
+    }
+
+    void RenderSkybox(NonNullPtr<RenderPass> pass, NonNullPtr<CommandList> cmdList, const Matrix& viewProjection)
+    {
+        if (!g_SkyboxRenderer.Pipeline)
+        {
+            return;
+        }
+
+        PushData pushData              = {};
+        pushData.ViewProjection        = viewProjection;
+        pushData.MeshIndex             = 0;
+        pushData.TransformsBufferIndex = 0;
+        pushData.BufferIndex           = 0;
+
+        BindGraphicsPipeline(pass, g_SkyboxRenderer.Pipeline);
+        SetPushConstants(cmdList, ShaderStage::Vertex, 0, sizeof(pushData) / 4, &pushData);
+        SetPushConstants(cmdList, ShaderStage::Fragment, 0, sizeof(pushData) / 4, &pushData);
+        DrawPrimitives(pass, 3, 1, 0, 0);
+    }
+
+#if ALLOW_SHADER_HOT_RELOAD
+    void ReloadSkyboxShaders()
+    {
+        // TODO
+    }
+#endif
+
+} // namespace Juliet

JulietApp/JulietApp.bff

@@ -59,8 +59,11 @@
             .Libraries                  = {
                                             'JulietApp-Lib-$Platform$-$BuildConfigName$',
                                             'Juliet-Lib-$Platform$-$BuildConfigName$',
-                                            'Game-Lib-$Platform$-$BuildConfigName$',
+                                            'Game-Lib-$Platform$-$BuildConfigName$'
-                                            'ImGui-Lib-$Platform$-$BuildConfigName$'
+                                          }
+            If ( .BuildConfigName != 'Release' )
+            {
+                ^Libraries              + { 'ImGui-Lib-$Platform$-$BuildConfigName$' }
             }
 
 

JulietApp/main.cpp

@@ -1,5 +1,20 @@
 #include "main.h"
 
+#ifdef global
+#undef global
+#endif
+#include <algorithm>
+#include <ios>
+#include <iosfwd>
+#define global static
+
+#ifdef _WIN32
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <Windows.h>
+#endif
+
 #include <Core/Application/ApplicationManager.h>
 #include <Core/Common/EnumUtils.h>
 #include <Core/Common/String.h>
@@ -21,15 +36,42 @@
 #include <Graphics/GraphicsConfig.h>
 #include <Graphics/GraphicsPipeline.h>
 #include <Graphics/Mesh.h>
+#include <Graphics/MeshRenderer.h>
 #include <Graphics/RenderPass.h>
+#include <Graphics/SkyboxRenderer.h>
 #include <Graphics/VertexData.h>
-#include <Juliet.h>
 
 #ifdef JULIET_ENABLE_IMGUI
 #include <imgui.h>
 #endif
 
 static bool ShowMemoryDebugger = false;
+static bool animateCubes       = true;
+static bool animateLights      = true;
+static bool animateCamera      = true;
+
+static bool            freeCameraMode = false;
+static float           camYaw         = 0.0f;
+static float           camPitch       = 0.0f;
+static Juliet::Vector3 camPos         = { 25.0f, 0.0f, 12.5f };
+
+static float animateCubesTime  = 0.0f;
+static float animateLightsTime = 0.0f;
+static float animateCameraTime = 0.0f;
+
+static float redLightRadius    = 10.0f;
+static float redLightIntensity = 5.0f;
+static float redLightColor[3]  = { 1.0f, 0.2f, 0.2f };
+static bool  redLightFollowsCamera = false;
+
+static bool  enableGlobalLight     = true;
+static float globalLightDir[3]     = { 0.5f, -1.0f, -0.5f };
+static float globalLightColor[3]   = { 1.0f, 0.95f, 0.8f };
+static float globalAmbientIntensity = 0.2f;
+
+static float blueLightRadius    = 15.0f;
+static float blueLightIntensity = 8.0f;
+static float blueLightColor[3]  = { 0.2f, 0.2f, 1.0f };
 
 // TODO : Replace with message box from framework + call main and not winmain + subsystem
 // TODO : Think how to do the draw pipeline.
@@ -43,13 +85,6 @@ static bool ShowMemoryDebugger = false;
 
 using namespace Juliet;
 
-extern "C" {
-__declspec(dllexport) extern const unsigned int D3D12SDKVersion = 615;
-}
-extern "C" {
-__declspec(dllexport) extern const char* D3D12SDKPath = ".\\";
-}
-
 namespace
 {
     using GameInit_t     = void (*)(GameInitParams*);
@@ -63,18 +98,21 @@ namespace
     } Game;
 
     const char* GameFunctionTable[] = { "GameInit", "GameShutdown", "GameUpdate" };
+
+    LightID RedLightID  = 0;
+    LightID BlueLightID = 0;
 } // namespace
 
-void JulietApplication::Init()
+void JulietApplication::Init(NonNullPtr<Arena>)
 {
     Log(LogLevel::Message, LogCategory::Tool, "Initializing Juliet Application...");
-
     Log(LogLevel::Message, LogCategory::Tool, "%s", CStr(GetBasePath()));
 
     GraphicsConfig config;
 #if JULIET_DEBUG
     config.EnableDebug = true;
 #endif
+
     GraphicsDevice = CreateGraphicsDevice(config);
 
     MainWindow = CreatePlatformWindow("Juliet Editor", 1280, 720);
@@ -85,43 +123,6 @@ void JulietApplication::Init()
     {
         AttachToWindow(GraphicsDevice, MainWindow);
         {
-            // Create graphics pipeline
-            String           entryPoint = WrapString("main");
-            ShaderCreateInfo shaderCI   = {};
-            shaderCI.EntryPoint         = entryPoint;
-
-            // TODO: Assets management that handles path to assets or something.
-            String shaderPath    = WrapString("../../Assets/compiled/Triangle.vert.dxil");
-            shaderCI.Stage       = ShaderStage::Vertex;
-            Shader* vertexShader = CreateShader(GraphicsDevice, shaderPath, shaderCI);
-
-            shaderPath             = WrapString("../../Assets/compiled/SolidColor.frag.dxil");
-            shaderCI.Stage         = ShaderStage::Fragment;
-            Shader* fragmentShader = CreateShader(GraphicsDevice, shaderPath, shaderCI);
-
-            ColorTargetDescription colorTargetDescription = {};
-            colorTargetDescription.Format                 = GetSwapChainTextureFormat(GraphicsDevice, MainWindow);
-
-            GraphicsPipelineCreateInfo pipelineCI         = {};
-            pipelineCI.VertexShader                       = vertexShader;
-            pipelineCI.FragmentShader                     = fragmentShader;
-            pipelineCI.PrimitiveType                      = PrimitiveType::TriangleList;
-            pipelineCI.TargetInfo                         = { .ColorTargetDescriptions = &colorTargetDescription,
-                                                              .NumColorTargets         = 1,
-                                                              .DepthStencilFormat      = TextureFormat::D32_FLOAT,
-                                                              .HasDepthStencilTarget   = true };
-            pipelineCI.RasterizerState.FillMode           = FillMode::Solid;
-            pipelineCI.DepthStencilState.EnableDepthTest  = true;
-            pipelineCI.DepthStencilState.EnableDepthWrite = true;
-            pipelineCI.DepthStencilState.CompareOperation = CompareOperation::Less;
-
-            GraphicsPipeline = CreateGraphicsPipeline(GraphicsDevice, pipelineCI);
-            if (GraphicsPipeline == nullptr)
-            {
-                LogError(LogCategory::Game, "Failed to create graphics pipeline!");
-                Running = false;
-            }
-
             // Create Depth Buffer
             TextureCreateInfo depthCI = {};
             depthCI.Type              = TextureType::Texture_2D;
@@ -139,55 +140,38 @@ void JulietApplication::Init()
                 Running = false;
             }
 
-            // Create Buffers - Using StructuredBuffer for bindless SRV access in shader
+            constexpr int   kGridSize = 10;
-            BufferCreateInfo bufferCI = {};
+            constexpr float kSpacing  = 2.5f;
-            bufferCI.Size             = 1024;
+            constexpr float kOffset   = (kGridSize - 1) * kSpacing * 0.5f;
-            bufferCI.Usage            = BufferUsage::StructuredBuffer; // SRV for ResourceDescriptorHeap access
-            StructuredBuffer          = CreateGraphicsBuffer(GraphicsDevice, bufferCI);
 
-            TransferBufferCreateInfo transferCI = {};
+            for (int row = 0; row < kGridSize; ++row)
-            transferCI.Size                     = 1024;
-            transferCI.Usage                    = TransferBufferUsage::Upload;
-            TransferBuffer                      = CreateGraphicsTransferBuffer(GraphicsDevice, transferCI);
-
-            // Upload Static Data for Test
-            if (TransferBuffer && StructuredBuffer)
             {
-                void* data = MapGraphicsTransferBuffer(GraphicsDevice, TransferBuffer);
+                for (int col = 0; col < kGridSize; ++col)
-                if (data)
                 {
-                    Matrix projection = PerspectiveFov(60.0f * (3.14159f / 180.0f), 1200.0f / 800.0f, 0.1f, 1000.0f);
+                    MeshID cube = AddCube();
-                    Matrix view       = LookAt({ 30.0f, 0.0f, 10.0f }, { 0.0f, 0.0f, 0.0f }, { 0.0f, 0.0f, 1.0f });
+                    float  x    = static_cast<float>(col) * kSpacing - kOffset;
-                    Matrix model      = Matrix::Identity();
+                    float  y    = static_cast<float>(row) * kSpacing - kOffset;
-                    Matrix mvp        = projection * view * model;
 
-                    MemCopy(data, &mvp, sizeof(Matrix));
+                    float  seed     = static_cast<float>(row * kGridSize + col);
-                    UnmapGraphicsTransferBuffer(GraphicsDevice, TransferBuffer);
+                    Matrix rotation = MatrixRotation(seed * 0.73f, seed * 1.17f, seed * 0.53f);
-
+                    SetMeshTransform(cube, MatrixTranslation(x, y, 0.0f) * rotation);
-                    CommandList* initCmd = AcquireCommandList(GraphicsDevice);
-                    CopyBuffer(initCmd, StructuredBuffer, TransferBuffer, 256);
-                    TransitionBufferToReadable(initCmd, StructuredBuffer);
-                    SubmitCommandLists(initCmd);
                 }
             }
 
-            CubeArena = ArenaAllocate({ .ReserveSize = Kilobytes(1llu), .CommitSize = Kilobytes(1llu) } JULIET_DEBUG_PARAM("CubeArena"));
+            // Start with some default test lights
-            CubeMesh = CreateCubeMesh(CubeArena);
+            PointLight redLight = {};
-            // CubeMesh = CreateQuadMesh(CubeArena);
+            redLight.Position   = { 5.0f, 5.0f, 2.0f };
+            redLight.Radius     = redLightRadius;
+            redLight.Color      = { redLightColor[0], redLightColor[1], redLightColor[2] };
+            redLight.Intensity  = redLightIntensity;
+            RedLightID          = AddPointLight(redLight);
 
-            if (vertexShader)
+            PointLight blueLight = {};
-            {
+            blueLight.Position   = { -5.0f, 0.0f, 2.0f };
-                DestroyShader(GraphicsDevice, vertexShader);
+            blueLight.Radius     = blueLightRadius;
-            }
+            blueLight.Color      = { blueLightColor[0], blueLightColor[1], blueLightColor[2] };
-            if (fragmentShader)
+            blueLight.Intensity  = blueLightIntensity;
-            {
+            BlueLightID          = AddPointLight(blueLight);
-                DestroyShader(GraphicsDevice, fragmentShader);
-            }
-
-            if (Running == false)
-            {
-                return;
-            }
         }
 
         GameCode.Functions     = reinterpret_cast<void**>(&Game);
@@ -208,8 +192,6 @@ void JulietApplication::Shutdown()
 {
     Log(LogLevel::Message, LogCategory::Tool, "Shutting down Juliet Application...");
 
-    ArenaRelease(CubeArena);
-
     if (GameCode.IsValid)
     {
         Game.Shutdown();
@@ -220,14 +202,7 @@ void JulietApplication::Shutdown()
     {
         DestroyGraphicsPipeline(GraphicsDevice, GraphicsPipeline);
     }
-    if (StructuredBuffer)
+
-    {
-        DestroyGraphicsBuffer(GraphicsDevice, StructuredBuffer);
-    }
-    if (TransferBuffer)
-    {
-        DestroyGraphicsTransferBuffer(GraphicsDevice, TransferBuffer);
-    }
     if (DepthBuffer)
     {
         DestroyTexture(GraphicsDevice, DepthBuffer);
@@ -253,8 +228,39 @@ void JulietApplication::Shutdown()
 
 void JulietApplication::Update()
 {
+    static LARGE_INTEGER frequency = {};
+    static LARGE_INTEGER lastTime  = {};
+    if (frequency.QuadPart == 0)
+    {
+        QueryPerformanceFrequency(&frequency);
+        QueryPerformanceCounter(&lastTime);
+    }
+
+    LARGE_INTEGER currentTime;
+    QueryPerformanceCounter(&currentTime);
+    float deltaTime = static_cast<float>(currentTime.QuadPart - lastTime.QuadPart) / static_cast<float>(frequency.QuadPart);
+    lastTime = currentTime;
+
+    CameraTime += deltaTime;
+
+    static float fpsTimer  = 0.0f;
+    static int   fpsFrames = 0;
+    fpsTimer += deltaTime;
+    fpsFrames++;
+    if (fpsTimer >= 0.5f)
+    {
+        float fps = static_cast<float>(fpsFrames) / fpsTimer;
+        float ms  = (fpsTimer / static_cast<float>(fpsFrames)) * 1000.0f;
+        char  title[64];
+        snprintf(title, sizeof(title), "Juliet | %.1f FPS | %.2f ms", static_cast<double>(fps), static_cast<double>(ms));
+        SetWindowTitle(MainWindow, WrapString(title));
+        fpsTimer  = 0.0f;
+        fpsFrames = 0;
+    }
+
     bool        reloadShaders         = false;
     static bool reloadShadersDebounce = false;
+    static bool f1Debounce            = false;
 
     SystemEvent evt;
     while (GetEvent(evt))
@@ -280,14 +286,216 @@ void JulietApplication::Update()
         }
     }
 
+    static bool firstFreeFrame = false;
+
+    if (IsKeyDown(ScanCode::F1))
+    {
+        if (!f1Debounce)
+        {
+            freeCameraMode = !freeCameraMode;
+            if (freeCameraMode)
+            {
+                firstFreeFrame = true;
+            }
+            f1Debounce = true;
+        }
+    }
+    else
+    {
+        f1Debounce = false;
+    }
+
+    // Confine and hide the mouse for Free Camera mode
+    if (freeCameraMode)
+    {
 #ifdef JULIET_ENABLE_IMGUI
-    ImGui::ShowDemoWindow();
+        ImGui::SetMouseCursor(ImGuiMouseCursor_None);
 #endif
 
+#ifdef _WIN32
+        HWND hwnd = GetForegroundWindow();
+        if (hwnd)
+        {
+            RECT rect;
+            GetClientRect(hwnd, &rect);
+            POINT ptCenterClient = { (rect.right - rect.left) / 2, (rect.bottom - rect.top) / 2 };
+
+            if (!firstFreeFrame)
+            {
+                POINT currentPos;
+                GetCursorPos(&currentPos);
+                ScreenToClient(hwnd, &currentPos);
+
+                float deltaX = static_cast<float>(currentPos.x - ptCenterClient.x);
+                float deltaY = static_cast<float>(currentPos.y - ptCenterClient.y);
+
+                float sensitivity = 0.005f;
+                // Plus because the mouse is inverted inherently by windows to screen coordinate
+                camYaw += deltaX * sensitivity;
+                camPitch -= deltaY * sensitivity;
+
+                camPitch = std::min(camPitch, 1.5f);
+                camPitch = std::max(camPitch, -1.5f);
+            }
+            firstFreeFrame = false;
+
+            POINT ptCenterScreen = ptCenterClient;
+            ClientToScreen(hwnd, &ptCenterScreen);
+            SetCursorPos(ptCenterScreen.x, ptCenterScreen.y);
+        }
+#endif
+    }
+
+    if (freeCameraMode)
+    {
+        float speed = 10.0f * deltaTime;
+        if ((GetKeyModState() & KeyMod::Shift) != KeyMod::None)
+        {
+            speed *= 3.0f;
+        }
+
+        Vector3 forward = { cosf(camYaw) * cosf(camPitch), sinf(camYaw) * cosf(camPitch), sinf(camPitch) };
+        Vector3 right   = { cosf(camYaw + 1.5708f), sinf(camYaw + 1.5708f), 0.0f };
+        Vector3 up      = { 0.0f, 0.0f, 1.0f };
+
+        if (IsKeyDown(ScanCode::W))
+        {
+            camPos = camPos + forward * speed;
+        }
+        if (IsKeyDown(ScanCode::S))
+        {
+            camPos = camPos - forward * speed;
+        }
+        if (IsKeyDown(ScanCode::D))
+        {
+            camPos = camPos + right * speed;
+        }
+        if (IsKeyDown(ScanCode::A))
+        {
+            camPos = camPos - right * speed;
+        }
+        if (IsKeyDown(ScanCode::E))
+        {
+            camPos = camPos + up * speed;
+        }
+        if (IsKeyDown(ScanCode::Q))
+        {
+            camPos = camPos - up * speed;
+        }
+    }
+
+    if (animateCubes)
+    {
+        animateCubesTime += deltaTime;
+    }
+    if (animateLights)
+    {
+        animateLightsTime += deltaTime;
+    }
+    if (animateCamera)
+    {
+        animateCameraTime += deltaTime;
+    }
+
+#ifdef JULIET_ENABLE_IMGUI
+    ImGui::Begin("Debug Controls");
+    ImGui::Checkbox("Animate Cubes", &animateCubes);
+    ImGui::Checkbox("Animate Lights", &animateLights);
+    ImGui::Checkbox("Animate Camera", &animateCamera);
+    
+    ImGui::Separator();
+    ImGui::Text("Global Light");
+    ImGui::Checkbox("Enable Global Light", &enableGlobalLight);
+    if (enableGlobalLight)
+    {
+        ImGui::SliderFloat3("Direction", globalLightDir, -1.0f, 1.0f);
+        ImGui::ColorEdit3("Color", globalLightColor);
+        ImGui::SliderFloat("Ambient Intensity", &globalAmbientIntensity, 0.0f, 1.0f);
+    }
+    
+    ImGui::Separator();
+    ImGui::Text("Red Point Light");
+    ImGui::ColorEdit3("Red Color", redLightColor);
+    ImGui::SliderFloat("Red Radius", &redLightRadius, 1.0f, 50.0f);
+    ImGui::SliderFloat("Red Intensity", &redLightIntensity, 0.0f, 50.0f);
+    ImGui::Checkbox("Red Light Follows Camera", &redLightFollowsCamera);
+    
+    ImGui::Separator();
+    ImGui::Text("Blue Point Light");
+    ImGui::ColorEdit3("Blue Color", blueLightColor);
+    ImGui::SliderFloat("Blue Radius", &blueLightRadius, 1.0f, 50.0f);
+    ImGui::SliderFloat("Blue Intensity", &blueLightIntensity, 0.0f, 50.0f);
+    
+    ImGui::End();
+#endif
+
+    ArenaClear(GameScratchArena);
+
+    Vector3 redLightPos  = { 5.0f, 5.0f, 2.0f };
+    Vector3 blueLightPos = { -5.0f, 0.0f, 2.0f };
+
+    if (animateLights || animateLightsTime > 0.0f)
+    {
+        redLightPos  = { cosf(animateLightsTime * 2.0f) * 5.0f, sinf(animateLightsTime * 2.0f) * 5.0f, 2.0f };
+        blueLightPos = { -5.0f, cosf(animateLightsTime) * 3.0f, 2.0f };
+    }
+
+    if (redLightFollowsCamera)
+    {
+        Camera cam = GetDebugCamera();
+        redLightPos = cam.Position;
+    }
+
+    SetPointLightPosition(RedLightID, redLightPos);
+    SetPointLightPosition(BlueLightID, blueLightPos);
+    
+    SetPointLightColor(RedLightID, { redLightColor[0], redLightColor[1], redLightColor[2] });
+    SetPointLightRadius(RedLightID, redLightRadius);
+    SetPointLightIntensity(RedLightID, redLightIntensity);
+    
+    SetPointLightColor(BlueLightID, { blueLightColor[0], blueLightColor[1], blueLightColor[2] });
+    SetPointLightRadius(BlueLightID, blueLightRadius);
+    SetPointLightIntensity(BlueLightID, blueLightIntensity);
+
+    // Animate the 100 cubes (10x10 grid)
+    constexpr int   kGridSize = 10;
+    constexpr float kSpacing  = 2.5f;
+    constexpr float kOffset   = (kGridSize - 1) * kSpacing * 0.5f;
+
+    for (int row = 0; row < kGridSize; ++row)
+    {
+        for (int col = 0; col < kGridSize; ++col)
+        {
+            MeshID cube = static_cast<MeshID>(row * kGridSize + col); // Assuming they were added first
+            float  x    = static_cast<float>(col) * kSpacing - kOffset;
+            float  y    = static_cast<float>(row) * kSpacing - kOffset;
+
+            float seed  = static_cast<float>(cube);
+            float timeZ = animateCubesTime * 2.0f + seed * 0.5f;
+            float z     = 0.0f;
+
+            float  scaleF   = 1.0f;
+            Matrix rotation = MatrixIdentity();
+
+            if (animateCubes || animateCubesTime > 0.0f)
+            {
+                z      = sinf(timeZ) * 1.5f;                                 // Oscillate up and down
+                scaleF = 1.0f + sinf(animateCubesTime * 1.5f + seed) * 0.3f; // Pulse scale
+                rotation = MatrixRotation(animateCubesTime * 1.2f + seed * 0.73f, animateCubesTime * 0.8f + seed * 1.17f,
+                                          animateCubesTime * 0.5f + seed * 0.53f);
+            }
+            Matrix scale = MatrixScale(scaleF, scaleF, scaleF);
+
+            SetMeshTransform(cube, MatrixTranslation(x, y, z) * rotation * scale);
+        }
+    }
+
     DebugDisplay_DrawLine({ 0.0f, 0.0f, 0.0f }, { 1.0f, 0.0f, 0.0f }, { 1.0f, 0.0f, 0.0f, 1.0f }, false);
     DebugDisplay_DrawLine({ 0.0f, 0.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }, { 0.0f, 1.0f, 0.0f, 1.0f }, true);
     DebugDisplay_DrawLine({ 0.0f, 0.0f, 0.0f }, { 0.0f, 0.0f, 1.0f }, { 0.0f, 0.0f, 1.0f, 1.0f }, true);
     DebugDisplay_DrawSphere({ 0.0f, 0.0f, 0.0f }, 0.5f, { 1.0f, 1.0f, 0.0f, 1.0f }, true);
+    DebugDisplay_DrawSphere(blueLightPos, 0.5f, { 0.0f, 0.0f, 1.0f, 1.0f }, true);
+    DebugDisplay_DrawSphere(redLightPos, 0.5f, { 1.0f, 0.0f, 0.0f, 1.0f }, true);
 
     Game.Update(0.0f);
 
@@ -301,27 +509,7 @@ void JulietApplication::Update()
         WaitUntilGPUIsIdle(GraphicsDevice);
 
 #if ALLOW_SHADER_HOT_RELOAD
-        String           entryPoint = WrapString("main");
+        ReloadMeshRendererShaders();
-        ShaderCreateInfo shaderCI   = {};
-        shaderCI.EntryPoint         = entryPoint;
-        String shaderPath           = WrapString("../../Assets/compiled/Triangle.vert.dxil");
-        shaderCI.Stage              = ShaderStage::Vertex;
-        Shader* vertexShader        = CreateShader(GraphicsDevice, shaderPath, shaderCI);
-
-        shaderPath             = WrapString("../../Assets/compiled/SolidColor.frag.dxil");
-        shaderCI.Stage         = ShaderStage::Fragment;
-        Shader* fragmentShader = CreateShader(GraphicsDevice, shaderPath, shaderCI);
-
-        UpdateGraphicsPipelineShaders(GraphicsDevice, GraphicsPipeline, vertexShader, fragmentShader);
-
-        if (vertexShader)
-        {
-            DestroyShader(GraphicsDevice, vertexShader);
-        }
-        if (fragmentShader)
-        {
-            DestroyShader(GraphicsDevice, fragmentShader);
-        }
 #endif
     }
 
@@ -361,76 +549,28 @@ void JulietApplication::Update()
     ArenaClear(GameScratchArena);
 }
 
-void JulietApplication::OnPreRender(CommandList* cmd)
+void JulietApplication::OnPreRender(CommandList* /*cmd*/) {}
-{
-    index_t index = 0;
-
-    // Buffer uploads
-    if (StructuredBuffer && TransferBuffer)
-    {
-        void* ptr = MapGraphicsTransferBuffer(GraphicsDevice, TransferBuffer);
-        if (ptr)
-        {
-            Vertex* vertices = static_cast<Vertex*>(ptr);
-
-            // // Triangle 1
-            // vertices[index++] = { { -0.5f, -0.5f, 0.0f }, { 1.0f, 0.0f, 0.0f, 1.0f } }; // Red
-            // vertices[index++] = { { 0.0f, 0.5f, 0.0f }, { 0.0f, 1.0f, 0.0f, 1.0f } };   // Green
-            // vertices[index++] = { { 0.5f, -0.5f, 0.0f }, { 0.0f, 0.0f, 1.0f, 1.0f } };  // Blue
-            //
-            // // Triangle 2
-            // vertices[index++] = { { -0.5f, 0.5f, 0.0f }, { 1.0f, 1.0f, 0.0f, 1.0f } }; // Yellow
-            // vertices[index++] = { { 0.0f, 0.8f, 0.0f }, { 0.0f, 1.0f, 1.0f, 1.0f } };  // Cyan
-            // vertices[index++] = { { 0.5f, 0.5f, 0.0f }, { 1.0f, 0.0f, 1.0f, 1.0f } };  // Magenta
-
-            if (CubeMesh)
-            {
-                CubeMesh->VertexOffset = index;
-                size_t vertexSize      = CubeMesh->VertexCount * sizeof(Vertex);
-                MemCopy(vertices + index, CubeMesh->Vertices, vertexSize);
-
-                CubeMesh->IndexByteOffset = (index + CubeMesh->VertexCount) * sizeof(Vertex);
-                // Align
-                CubeMesh->IndexByteOffset = (CubeMesh->IndexByteOffset + 255) & static_cast<size_t>(~255);
-
-                size_t indexSize = CubeMesh->IndexCount * sizeof(uint16);
-
-                CubeMesh->IndexOffset = 0;
-
-                uint8*  ptrOneByte = static_cast<uint8*>(ptr);
-                uint16* dst        = reinterpret_cast<uint16*>(ptrOneByte + CubeMesh->IndexByteOffset);
-                MemCopy(dst, CubeMesh->Indices, indexSize);
-            }
-
-            UnmapGraphicsTransferBuffer(GraphicsDevice, TransferBuffer);
-        }
-
-        CopyBuffer(cmd, StructuredBuffer, TransferBuffer, CubeMesh->IndexByteOffset + (CubeMesh->IndexCount * sizeof(uint16)));
-        TransitionBufferToReadable(cmd, StructuredBuffer);
-    }
-}
 
 void JulietApplication::OnRender(RenderPass* pass, CommandList* cmd)
 {
-    BindGraphicsPipeline(pass, GraphicsPipeline);
+    PushData pushData       = {};
-
-    uint32 descriptorIndex = GetDescriptorIndex(GraphicsDevice, StructuredBuffer);
-
-    struct PushData
-    {
-        Matrix ViewProjection;
-        uint32 BufferIndex;
-    } pushData              = {};
-    pushData.BufferIndex    = descriptorIndex;
     pushData.ViewProjection = Camera_GetViewProjectionMatrix(GetDebugCamera());
 
-    SetPushConstants(cmd, ShaderStage::Vertex, 0, sizeof(pushData) / 4, &pushData);
+    if (enableGlobalLight)
+    {
+        pushData.GlobalLightDirection   = Normalize({ globalLightDir[0], globalLightDir[1], globalLightDir[2] });
+        pushData.GlobalLightColor       = { globalLightColor[0], globalLightColor[1], globalLightColor[2] };
+        pushData.GlobalAmbientIntensity = globalAmbientIntensity;
+    }
+    else
+    {
+        pushData.GlobalLightDirection   = { 0.0f, -1.0f, 0.0f };
+        pushData.GlobalLightColor       = { 0.0f, 0.0f, 0.0f };
+        pushData.GlobalAmbientIntensity = 0.0f;
+    }
 
-    SetIndexBuffer(cmd, StructuredBuffer, IndexFormat::UInt16, CubeMesh->IndexCount, CubeMesh->IndexByteOffset);
+    RenderSkybox(pass, cmd, pushData.ViewProjection);
-    // DrawIndexedPrimitives(pass, static_cast<uint32>(CubeMesh->IndexCount), 1, 0, 0, 0);
+    RenderMeshes(pass, cmd, pushData);
-
-    DrawIndexedPrimitives(pass, static_cast<uint32>(CubeMesh->IndexCount), 1,
-                          static_cast<uint32>(CubeMesh->IndexOffset), static_cast<uint32>(CubeMesh->VertexOffset), 0);
 }
 
 ColorTargetInfo JulietApplication::GetColorTargetInfo(Texture* swapchainTexture)
@@ -455,21 +595,33 @@ DepthStencilTargetInfo* JulietApplication::GetDepthTargetInfo()
 
 Camera JulietApplication::GetDebugCamera()
 {
-    static float time = 0.0f;
+    if (freeCameraMode)
-    time += 0.016f;
+    {
-
+        Camera cam   = {};
-    float orbitSpeed       = 0.5f;
+        cam.Position = camPos;
-    float currentOrbitTime = time * orbitSpeed;
+        cam.Target   = camPos + Vector3{ cosf(camYaw) * cosf(camPitch), sinf(camYaw) * cosf(camPitch), sinf(camPitch) };
+        cam.Up       = { 0.0f, 0.0f, 1.0f };
+        cam.FOV      = 1.047f;
+        cam.AspectRatio = 1200.0f / 800.0f;
+        cam.NearPlane   = 0.1f;
+        cam.FarPlane    = 1000.0f;
+        return cam;
+    }
 
     // --- Adjusted for 1-Meter Scale ---
-    float baseRadius = 2.5f; // Hover 2.5 meters away (down from 15.0f)
+    float baseRadius = 25.0f; // Increased to see 10x10 cube grid
 
     float radius = baseRadius;
-    /* Uncomment for active zoom
+
-    float zoomAmplitude = 1.0f; // Oscillate between 1.5m and 3.5m away
+    if (animateCamera || animateCameraTime > 0.0f)
-    float zoomSpeed     = 0.8f;
+    {
-    radius  = baseRadius + (sinf(time * zoomSpeed) * zoomAmplitude);
+        float orbitSpeed       = 0.5f;
-    */
+        float currentOrbitTime = animateCameraTime * orbitSpeed;
+
+        float zoomAmplitude = 15.0f;
+        float zoomSpeed     = 0.5f;
+        radius              = baseRadius + (sinf(animateCameraTime * zoomSpeed) * zoomAmplitude);
+
         float zHeight = radius * 0.5f; // Keep a nice downward viewing angle
 
         Camera cam      = {};
@@ -484,6 +636,20 @@ Camera JulietApplication::GetDebugCamera()
         return cam;
     }
 
+    float zHeight = radius * 0.5f; // Keep a nice downward viewing angle
+
+    Camera cam      = {};
+    cam.Position    = { radius, 0.0f, zHeight };
+    cam.Target      = { 0.0f, 0.0f, 0.0f };
+    cam.Up          = { 0.0f, 0.0f, 1.0f };
+    cam.FOV         = 1.047f;
+    cam.AspectRatio = 1200.0f / 800.0f;
+    cam.NearPlane   = 0.1f;
+    cam.FarPlane    = 1000.0f;
+
+    return cam;
+}
+
 bool JulietApplication::IsRunning()
 {
     return Running;
@@ -498,15 +664,15 @@ JulietApplication& GetEditorApplication()
     return EditorApplication;
 }
 
-int JulietMain(int, wchar_t**)
+int JulietMain(int argc, wchar_t** argv)
 {
-    if (__argc > 1)
+    if (argc > 1)
     {
-        for (int i = 1; i < __argc; ++i)
+        for (int i = 1; i < argc; ++i)
         {
-            if (strcmp(__argv[i], "-autoclose") == 0 && (i + 1 < __argc))
+            if (wcscmp(argv[i], L"-autoclose") == 0 && (i + 1 < argc))
             {
-                int frames = atoi(__argv[i + 1]);
+                int frames = _wtoi(argv[i + 1]);
                 EditorApplication.SetAutoCloseFrameCount(frames);
             }
         }
@@ -516,7 +682,7 @@ int JulietMain(int, wchar_t**)
 
     // Pause here to not close the console window immediatly on stop
     // Only pause if not in auto-close mode
-    if (EditorApplication.GetAutoCloseFrameCount() == -1)
+    if (EditorApplication.GetAutoCloseFrameCount() == -1 && !Debug::IsDebuggerPresent())
     {
         system("PAUSE");
     }

JulietApp/main.h

@@ -18,7 +18,7 @@ namespace Juliet
 class JulietApplication : public Juliet::IApplication
 {
   protected:
-    void Init() override;
+    void Init(Juliet::NonNullPtr<Juliet::Arena> arena) override;
     void Shutdown() override;
     void Update() override;
     bool IsRunning() override;
@@ -42,18 +42,13 @@ class JulietApplication : public Juliet::IApplication
     Juliet::GraphicsDevice*   GraphicsDevice   = {};
     Juliet::HotReloadCode     GameCode         = {};
     Juliet::GraphicsPipeline* GraphicsPipeline = {};
-    Juliet::GraphicsBuffer*         StructuredBuffer = {};
-    Juliet::GraphicsTransferBuffer* TransferBuffer   = {};
     Juliet::Texture*          DepthBuffer      = {};
-
-    Juliet::Mesh*  CubeMesh  = {};
-    Juliet::Arena* CubeArena = nullptr;
-
     Juliet::Arena*            GameArena        = nullptr;
     Juliet::Arena*            GameScratchArena = nullptr;
 
     int   AutoCloseFrameCount = -1;
     bool  Running             = false;
+    float CameraTime          = 0.0f;
 };
 
 JulietApplication& GetEditorApplication();

misc/agent_output.log

@@ -1,73 +0,0 @@
-[2026-02-16 16:02:02.4149977] Starting Unit Tests...
-Running Paged Memory Arena Tests...
-[2026-02-16 16:02:02.4153152] Allocating from W:\Classified\Juliet\Juliet\src\Core\Memory\MemoryArenaTests.cpp : 23l
-[2026-02-16 16:02:02.4154229] Allocating from W:\Classified\Juliet\Juliet\src\Core\Memory\MemoryArena.cpp : 181l
-[2026-02-16 16:02:02.4264282] Allocating from W:\Classified\Juliet\Juliet\src\Core\Memory\MemoryArenaTests.cpp : 122l
-[2026-02-16 16:02:02.4266593] Allocating from W:\Classified\Juliet\Juliet\src\Core\Memory\MemoryArenaTests.cpp : 141l
-All Paged MemoryArena tests passed.
-[2026-02-16 16:02:02.4268147] Allocating from Juliet/include\Core/Container/Vector.h : 22l
-[2026-02-16 16:02:02.4269590] Allocating from Juliet/include\Core/Container/Vector.h : 22l
-[2026-02-16 16:02:02.4270984] Allocating from Juliet/include\Core/Container/Vector.h : 22l
-[2026-02-16 16:02:02.4272310] Allocating from Juliet/include\Core/Container/Vector.h : 22l
-[2026-02-16 16:02:02.4273792] Allocating from W:\Classified\Juliet\Juliet\src\UnitTest\Container\VectorUnitTest.cpp : 152l
-[2026-02-16 16:02:02.4275180] Allocating from W:\Classified\Juliet\Juliet\src\UnitTest\Container\VectorUnitTest.cpp : 212l
-[2026-02-16 16:02:02.4276613] Allocating from W:\Classified\Juliet\Juliet\src\UnitTest\Container\VectorUnitTest.cpp : 231l
-[2026-02-16 16:02:02.4277980] Allocating from W:\Classified\Juliet\Juliet\src\UnitTest\Container\VectorUnitTest.cpp : 258l
-[2026-02-16 16:02:02.4279316] Allocating from W:\Classified\Juliet\Juliet\src\UnitTest\Container\VectorUnitTest.cpp : 275l
-[2026-02-16 16:02:02.4280555] Unit Tests Completed Successfully.
-[2026-02-16 16:02:02.4281360] Allocating from W:\Classified\Juliet\Juliet\src\Core\HAL\Display\Display.cpp : 26l
-[2026-02-16 16:02:02.4282502] Allocating from Juliet/include\Core/Container/Vector.h : 22l
-[2026-02-16 16:02:02.4283584] Initializing Juliet Application...
-[2026-02-16 16:02:02.4284436] w:\Classified\Juliet\bin\x64Clang-Debug\
-[2026-02-16 16:02:02.6190578] Allocating from W:\Classified\Juliet\Juliet\src\Graphics\D3D12\D3D12GraphicsDevice.cpp : 709l
-[2026-02-16 16:02:02.6205209] D3D12 Driver Infos:
-[2026-02-16 16:02:02.6206266] D3D12 Adapter: AMD Radeon RX 5700 XT
-[2026-02-16 16:02:02.6206942] D3D12 Driver Version: 32.0.21041.1000
-[2026-02-16 16:02:02.7715117] DX12: D3D12Device Created: 000001AE0FCD6AC0
-[2026-02-16 16:02:02.7716961] DX12: Debug Info Logger Initialized
-[2026-02-16 16:02:02.7759926] Allocating from W:\Classified\Juliet\Juliet\src\Graphics\D3D12\D3D12Common.cpp : 52l
-[2026-02-16 16:02:02.7762940] Allocating from W:\Classified\Juliet\Juliet\src\Graphics\D3D12\D3D12Common.cpp : 52l
-[2026-02-16 16:02:02.7764796] Allocating from W:\Classified\Juliet\Juliet\src\Graphics\D3D12\D3D12Common.cpp : 52l
-[2026-02-16 16:02:02.7767423] Allocating from W:\Classified\Juliet\Juliet\src\Graphics\D3D12\D3D12Common.cpp : 52l
-[2026-02-16 16:02:02.7769776] Allocating from W:\Classified\Juliet\Juliet\src\Graphics\D3D12\D3D12DescriptorHeap.cpp : 15l
-[2026-02-16 16:02:02.7862548] Allocating from W:\Classified\Juliet\Juliet\src\Core\HAL\Display\Display.cpp : 83l
-[2026-02-16 16:02:02.8281025] CreateBuffer: Device=000001AE0FCD6AC0, Size=1024, Type=Base Use=StructuredBuffer
-[2026-02-16 16:02:02.8287554]   -> SRV DescriptorIndex=1
-[2026-02-16 16:02:02.8288672] CreateBuffer: Device=000001AE0FCD6AC0, Size=1024, Type=TransferUpload Use=None
-[2026-02-16 16:02:02.8304524] Allocating from W:\Classified\Juliet\JulietApp\main.cpp : 174l
-[2026-02-16 16:02:02.8306076] Allocating from W:\Classified\Juliet\Juliet\src\Core\HotReload\HotReload.cpp : 14l
-[2026-02-16 16:02:02.8561774] Allocating from W:\Classified\Juliet\JulietApp\main.cpp : 200l
-[2026-02-16 16:02:02.8563269] Allocating from W:\Classified\Juliet\JulietApp\main.cpp : 201l
-Game Arena Allocated: 000001AE56E00080
-Door is Opened
-Rock has 100 health points
-[2026-02-16 16:02:02.8565687] CreateBuffer: Device=000001AE0FCD6AC0, Size=458752, Type=Base Use=StructuredBuffer
-[2026-02-16 16:02:02.8575789]   -> SRV DescriptorIndex=2
-[2026-02-16 16:02:02.8576717] CreateBuffer: Device=000001AE0FCD6AC0, Size=458752, Type=TransferUpload Use=None
-[2026-02-16 16:02:02.8583558] Allocating from W:\Classified\Juliet\Juliet\src\Core\ImGui\ImGuiService.cpp : 44l
-ImGuiRenderer_Initialize: device=000001AE2B1AC730, g_ImGuiState=00007FFE66A66140, Initialized=0
-[2026-02-16 16:02:02.8634723] CreateBuffer: Device=000001AE0FCD6AC0, Size=262144, Type=TransferUpload Use=None
-ImGuiService: Running Unit Tests...
-TestImGui: Context Verified.
-TestImGui: IO Verified. Backend: imgui_impl_win32
-TestImGui: Version Verified: 1.92.6 WIP
-TestImGui: Fonts Verified.
-TestImGui: Fonts Built Status: 1
-TestImGui: Font Atlas Verified.
-TestImGui: Style Verified.
-TestImGui: About to DrawList check.
-ImGui tests passed (Exhaustive).
-[2026-02-16 16:02:02.8744932] CreateBuffer: Device=000001AE0FCD6AC0, Size=101400, Type=Base Use=StructuredBuffer
-[2026-02-16 16:02:02.8754236]   -> SRV DescriptorIndex=4
-[2026-02-16 16:02:02.8755349] CreateBuffer: Device=000001AE0FCD6AC0, Size=101400, Type=TransferUpload Use=None
-[2026-02-16 16:02:02.8762446] CreateBuffer: Device=000001AE0FCD6AC0, Size=20258, Type=Base Use=IndexBuffer
-[2026-02-16 16:02:02.8768422] CreateBuffer: Device=000001AE0FCD6AC0, Size=20258, Type=TransferUpload Use=None
-[2026-02-16 16:02:02.8797340] CreateBuffer: Device=000001AE0FCD6AC0, Size=101400, Type=Base Use=StructuredBuffer
-[2026-02-16 16:02:02.8805045]   -> SRV DescriptorIndex=5
-[2026-02-16 16:02:02.8806249] CreateBuffer: Device=000001AE0FCD6AC0, Size=101400, Type=TransferUpload Use=None
-[2026-02-16 16:02:02.8812642] CreateBuffer: Device=000001AE0FCD6AC0, Size=20258, Type=Base Use=IndexBuffer
-[2026-02-16 16:02:02.8819564] CreateBuffer: Device=000001AE0FCD6AC0, Size=20258, Type=TransferUpload Use=None
-[2026-02-16 16:02:03.7970638] Auto-closing application as requested.
-[2026-02-16 16:02:03.8504471] Shutting down Juliet Application...
-Shutting down game...
-[2026-02-16 16:02:03.8768023] Juliet App shutdown Completed

misc/ship.bat

@@ -0,0 +1,62 @@
+@echo off
+setlocal
+
+REM ============================================================
+REM  ship.bat - Build clang-Release and prepare Ship/ folder
+REM ============================================================
+
+set ROOT=%~dp0..
+set BUILD_DIR=%ROOT%\bin\x64Clang-Release
+set SHIP_DIR=%ROOT%\Ship
+
+REM Step 0: Build Shader Compiler
+echo [Ship] Building Shader Compiler...
+call "%~dp0fbuild" JulietShaderCompiler-x64Clang-Release -cache
+if errorlevel 1 (
+    echo [Ship] SHADER COMPILER BUILD FAILED
+    exit /b 1
+)
+
+REM Step 1: Compile shaders
+echo [Ship] Compiling shaders...
+call "%~dp0recompile_shaders.bat"
+if errorlevel 1 (
+    echo [Ship] SHADER COMPILATION FAILED
+    exit /b 1
+)
+
+REM Step 2: Build clang-Release
+echo [Ship] Building clang-Release...
+call "%~dp0fbuild" clang-Release -cache
+if errorlevel 1 (
+    echo [Ship] BUILD FAILED
+    exit /b 1
+)
+
+REM Step 3: Prepare Ship folder
+echo [Ship] Preparing Ship folder: %SHIP_DIR%
+
+if exist "%SHIP_DIR%" rd /s /q "%SHIP_DIR%"
+mkdir "%SHIP_DIR%"
+
+REM Copy only the required binaries
+echo [Ship] Copying binaries...
+copy "%BUILD_DIR%\JulietApp.exe" "%SHIP_DIR%\" >nul
+copy "%BUILD_DIR%\Juliet.dll"    "%SHIP_DIR%\" >nul
+copy "%BUILD_DIR%\Game.dll"      "%SHIP_DIR%\" >nul
+
+REM Copy compiled shaders into Assets\Shaders\
+echo [Ship] Copying shaders...
+mkdir "%SHIP_DIR%\Assets\Shaders"
+copy "%ROOT%\Assets\compiled\*.dxil" "%SHIP_DIR%\Assets\Shaders\" >nul
+del "%SHIP_DIR%\Assets\Shaders\ImGui*.dxil" >nul 2>&1
+
+echo.
+echo [Ship] Done!
+echo [Ship] Ship folder: %SHIP_DIR%
+echo.
+echo [Ship] Contents:
+dir /b "%SHIP_DIR%"
+echo.
+echo [Ship] Shaders:
+dir /b "%SHIP_DIR%\Assets\Shaders"