Luis Gonzalez
53 lines
1.9 KiB
HLSL
53 lines
1.9 KiB
HLSL
#ifndef COPY_INITIAL_MESH_BLEND_SHAPES_HLSL_
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#define COPY_INITIAL_MESH_BLEND_SHAPES_HLSL_
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/////////////////////////////////////////////////////////////////////////////////
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ByteAddressBuffer meshBlendShapesBuffer;
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RWByteAddressBuffer outInitialMeshBlendShapesData;
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uint inputBlendShapeVerticesCount;
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uint inputBlendShapeVertexOffset;
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uint outBlendShapeVertexOffset;
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/////////////////////////////////////////////////////////////////////////////////
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InputBlendShapeVertex ReadBlendShapeVertexDelta(uint vertexID)
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{
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uint vertexByteOffset = vertexID * InputBlendShapeVertex::size;
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uint4 v0 = meshBlendShapesBuffer.Load4(vertexByteOffset + 0);
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uint4 v1 = meshBlendShapesBuffer.Load4(vertexByteOffset + 16);
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uint2 v2 = meshBlendShapesBuffer.Load2(vertexByteOffset + 32);
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InputBlendShapeVertex rv;
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rv.meshVertexIndex = v0.x;
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rv.positionDelta = asfloat(v0.yzw);
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rv.normalDelta = asfloat(v1.xyz);
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rv.tangentDelta = asfloat(uint3(v1.w, v2.xy));
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return rv;
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}
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/////////////////////////////////////////////////////////////////////////////////
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[numthreads(128, 1, 1)]
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void CopyInitialMeshBlendShapes(uint tid: SV_DispatchThreadID)
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{
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if (tid >= inputBlendShapeVerticesCount)
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return;
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InputBlendShapeVertex v = ReadBlendShapeVertexDelta(tid + inputBlendShapeVertexOffset);
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uint4 o0 = asuint(float4(v.positionDelta, v.normalDelta.x));
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uint4 o1 = asuint(float4(v.normalDelta.yz, v.tangentDelta.xy));
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uint o2 = asuint(v.tangentDelta.z);
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uint outVertexOffset = v.meshVertexIndex + outBlendShapeVertexOffset;
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uint outVertexByteOffset = outVertexOffset * DeformedVertex::size;
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outInitialMeshBlendShapesData.Store4(outVertexByteOffset + 0, o0);
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outInitialMeshBlendShapesData.Store4(outVertexByteOffset + 16, o1);
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outInitialMeshBlendShapesData.Store(outVertexByteOffset + 32, o2);
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}
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#endif // COPY_INITIAL_MESH_BLEND_SHAPES_HLSL_
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