79 lines
2.7 KiB
HLSL
79 lines
2.7 KiB
HLSL
// Copyright Epic Games, Inc. All Rights Reserved.
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// Include required for platform TANGENT_RWBUFFER_FORMAT.
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#include "/Engine/Private/GpuSkinCommon.ush"
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#if OPENGL_PROFILE
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// On OpenGL, deformer/skin cache tangents are stored as SINT [-32767, 32767], instead of SNORM [-1.0,1.0], see TangentUnbias_SkinCache
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#define TangentRead_SkinCache(X) (X / 32767.0)
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#else
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#define TangentRead_SkinCache(X) (X)
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#endif // OPENGL_PROFILE
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uint {DataInterfaceName}_NumVertices;
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Buffer<float> {DataInterfaceName}_PositionBufferSRV;
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Buffer<TANGENT_RWBUFFER_FORMAT> {DataInterfaceName}_TangentBufferSRV;
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Buffer<UNORM float4> {DataInterfaceName}_ColorBufferSRV;
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Buffer<float> {DataInterfaceName}_PositionStaticBuffer;
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Buffer<SNORM float4> {DataInterfaceName}_TangentStaticBuffer;
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Buffer<float4> {DataInterfaceName}_ColorStaticBuffer;
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uint {DataInterfaceName}_ColorIndexMask;
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uint ReadNumVertices_{DataInterfaceName}()
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{
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return {DataInterfaceName}_NumVertices;
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}
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float3 ReadPosition_{DataInterfaceName}(uint VertexIndex)
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{
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uint BufferIndex = (VertexIndex) * 3;
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#if READABLE_OUTPUT_BUFFERS & OPTIMUS_SKINNED_MESH_READ_POSITION
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return float3(
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{DataInterfaceName}_PositionBufferSRV[BufferIndex + 0],
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{DataInterfaceName}_PositionBufferSRV[BufferIndex + 1],
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{DataInterfaceName}_PositionBufferSRV[BufferIndex + 2]);
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#else
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return float3(
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{DataInterfaceName}_PositionStaticBuffer[BufferIndex + 0],
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{DataInterfaceName}_PositionStaticBuffer[BufferIndex + 1],
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{DataInterfaceName}_PositionStaticBuffer[BufferIndex + 2]);
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#endif
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}
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float4 ReadTangentX_{DataInterfaceName}(uint VertexIndex)
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{
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uint BufferIndex = (VertexIndex) * 2;
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#if READABLE_OUTPUT_BUFFERS & OPTIMUS_SKINNED_MESH_READ_TANGENTS
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return TangentRead_SkinCache({DataInterfaceName}_TangentBufferSRV[BufferIndex]) ;
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#else
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return TangentBias_SkinCache({DataInterfaceName}_TangentStaticBuffer[BufferIndex]) ;
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#endif
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}
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float4 ReadTangentZ_{DataInterfaceName}(uint VertexIndex)
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{
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uint BufferIndex = (VertexIndex) * 2;
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#if READABLE_OUTPUT_BUFFERS & OPTIMUS_SKINNED_MESH_READ_TANGENTS
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return TangentRead_SkinCache({DataInterfaceName}_TangentBufferSRV[BufferIndex + 1]) ;
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#else
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return TangentBias_SkinCache({DataInterfaceName}_TangentStaticBuffer[BufferIndex + 1]) ;
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#endif
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}
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float4 ReadColor_{DataInterfaceName}(uint VertexIndex)
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{
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// Index Mask is used here in case ColorStaticBuffer is bound to the GWhiteVertexBufferWithSRV that is only a few bytes
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uint BufferIndex = (VertexIndex) & ({DataInterfaceName}_ColorIndexMask);
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#if READABLE_OUTPUT_BUFFERS & OPTIMUS_SKINNED_MESH_READ_COLOR
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return {DataInterfaceName}_ColorBufferSRV[BufferIndex] FMANUALFETCH_COLOR_COMPONENT_SWIZZLE;
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#else
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return {DataInterfaceName}_ColorStaticBuffer[BufferIndex] FMANUALFETCH_COLOR_COMPONENT_SWIZZLE;
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#endif
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}
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