Debug options: Stop moving light, camera and cubes.

F1 to have free camera

Assets/source/RootConstants.hlsl

@@ -9,16 +9,23 @@ struct PointLight
     float  Intensity;
 };
 
+struct TransformData
+{
+    row_major float4x4 Model;
+};
+
 cbuffer RootConstants : register(b0, space0)
 {
     row_major float4x4 ViewProjection;
-    row_major float4x4 Model;
+    uint     MeshIndex;
+    uint     TransformsBufferIndex;
     uint     BufferIndex;
-    uint     TextureIndex; 
+    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   LightDirection;  // Normalized, world-space
     float    LightPad;