View Frustum culling for mesh shading

res/shaders/lib/AABB.slang

@@ -8,18 +8,18 @@ struct AABB
     float pad1;
 	bool insideFrustum(float4x4 transform, Frustum frustum)
 	{
-		float3 corners[8];
-        corners[0] = mul(transform, float4(min.x, min.y, min.z, 1.0f)).xyz;
-        corners[1] = mul(transform, float4(min.x, min.y, max.z, 1.0f)).xyz;
-        corners[2] = mul(transform, float4(min.x, max.y, min.z, 1.0f)).xyz;
-        corners[3] = mul(transform, float4(min.x, max.y, max.z, 1.0f)).xyz;
-        corners[4] = mul(transform, float4(max.x, min.y, min.z, 1.0f)).xyz;
-        corners[5] = mul(transform, float4(max.x, min.y, max.z, 1.0f)).xyz;
-        corners[6] = mul(transform, float4(max.x, max.y, min.z, 1.0f)).xyz;
-        corners[7] = mul(transform, float4(max.x, max.y, max.z, 1.0f)).xyz;
+		float4 corners[8];
+        corners[0] = mul(transform, float4(min.x, min.y, min.z, 1.0f));
+        corners[1] = mul(transform, float4(min.x, min.y, max.z, 1.0f));
+        corners[2] = mul(transform, float4(min.x, max.y, min.z, 1.0f));
+        corners[3] = mul(transform, float4(min.x, max.y, max.z, 1.0f));
+        corners[4] = mul(transform, float4(max.x, min.y, min.z, 1.0f));
+        corners[5] = mul(transform, float4(max.x, min.y, max.z, 1.0f));
+        corners[6] = mul(transform, float4(max.x, max.y, min.z, 1.0f));
+        corners[7] = mul(transform, float4(max.x, max.y, max.z, 1.0f));
         for(int i = 0; i < 8; ++i)
         {
-            if(frustum.pointInside(corners[i]))
+            if(frustum.pointInside(corners[i].xyz / corners[i].w))
             {
                 return true;
             }

res/shaders/lib/Common.slang

@@ -35,15 +35,13 @@ struct Frustum
     Plane basePlane;
     bool pointInside(float3 point)
     {
-        float result = dot(basePlane.n, point) + basePlane.d;
-        if (0.0f > result)
+        if (dot(basePlane.n, point) + basePlane.d < 0.0f)
         {
             return false;
         }
         for(int p = 0; p < 4; ++p)
         {
-            result = dot(sides[p].n, point) + sides[p].d;
-            if(0.0f > result)
+            if(dot(sides[p].n, point) + sides[p].d < 0.0f)
             {
                 return false;
             }

res/shaders/lib/Scene.slang

@@ -7,10 +7,13 @@ struct MeshletDescription
 	uint32_t primitiveCount;
 	uint32_t vertexOffset;
 	uint32_t primitiveOffset;
+	float3 color;
+	float pad;
 };
 
 struct MeshData
 {
+	AABB boundingBox;
     uint32_t numMeshlets;
     uint32_t meshletOffset;
     uint32_t firstIndex;