Starting framework for static mesh rendering

2024-05-08 10:51:59 +02:00
parent af7d624d06
commit 46a2713729
31 changed files with 645 additions and 320 deletions
@@ -0,0 +1,43 @@
+import Common;
+import BRDF;
+import Scene;
+import VertexData;
+import MaterialParameter;
+
+struct PrimitiveAttributes
+{
+	uint cull: SV_CullPrimitive;
+};
+
+[numthreads(MESH_GROUP_SIZE, 1, 1)]
+[outputtopology("triangle")]
+[shader("mesh")]
+void meshMain(
+	in uint threadID: SV_GroupIndex,
+	in uint groupID: SV_GroupID,
+	out vertices FragmentParameter vertices[MAX_VERTICES], 
+	out indices uint3 indices[MAX_PRIMITIVES]
+){
+	MeshletDescription m = pScene.meshletInfos[groupID];
+	SetMeshOutputCounts(m.vertexCount, m.primitiveCount);
+	
+	for(uint i = threadID; i < MAX_PRIMITIVES; i += MESH_GROUP_SIZE)
+	{
+		uint p = min(i, m.primitiveCount - 1);
+		{
+			uint local_idx0 = pScene.primitiveIndices[m.primitiveOffset + (p * 3) + 0];
+			uint local_idx1 = pScene.primitiveIndices[m.primitiveOffset + (p * 3) + 1];
+			uint local_idx2 = pScene.primitiveIndices[m.primitiveOffset + (p * 3) + 2];
+			indices[p] = uint3(local_idx0, local_idx1, local_idx2);
+		}
+	}
+	for(uint i = threadID; i < MAX_VERTICES; i+=MESH_GROUP_SIZE)
+	{
+		uint v = min(i, m.vertexCount - 1);
+		{
+			uint vertexIndex = pScene.vertexIndices[m.vertexOffset + v];
+			VertexAttributes attr = pVertexData.getAttributes(md.indicesOffset + vertexIndex);
+			vertices[v] = attr.getParameter(float4x4(1.0));
+		}
+	}
+}