Staging before meshlet linearization

res/shaders/lib/MaterialParameter.slang

@@ -25,6 +25,7 @@ struct FragmentParameter
 	float3 biTangent_WS : TANGENT1;
 	float3 position_WS : POSITION2;
 	float3 vertexColor : COLOR0;
+	uint meshletId : POSITION3;
 	float2 texCoords[MAX_TEXCOORDS] : TEXCOORD0;
 	MaterialParameter getMaterialParameter()
 	{
@@ -55,6 +56,7 @@ struct VertexAttributes
 	float3 tangent_MS;
 	float3 biTangent_MS;
 	float3 vertexColor;
+	uint meshletId;
 	float2 texCoords[MAX_TEXCOORDS];
 	FragmentParameter getParameter(float4x4 transformMatrix)
 	{
@@ -73,6 +75,7 @@ struct VertexAttributes
 		result.position_WS = worldPos.xyz;
 		result.position_CS = clipPos;
 		result.vertexColor = vertexColor;
+		result.meshletId = meshletId;
 		for(uint i = 0; i < MAX_TEXCOORDS; ++i)
 		{
 			result.texCoords[i] = texCoords[i];

res/shaders/lib/Scene.slang

@@ -8,7 +8,7 @@ struct MeshletDescription
 	uint32_t vertexOffset;
 	uint32_t primitiveOffset;
 	float3 color;
-	float pad;
+	uint32_t indicesOffset;
 };
 
 struct MeshData
@@ -18,8 +18,6 @@ struct MeshData
 	uint32_t meshletOffset;
 	uint32_t firstIndex;
 	uint32_t numIndices;
-	uint32_t indicesOffset;
-	uint32_t pad0[3];
 };
 
 static const uint MAX_VERTICES = 256;