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https://github.com/izzy2lost/UnrealEngineUWP.git
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c9355c292c
optimized shaders to use SvPosition where possible, following change could remove some unused interpolator [CL 2697164 by Martin Mittring in Main branch]
85 lines
2.9 KiB
Plaintext
85 lines
2.9 KiB
Plaintext
// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
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/*=============================================================================
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BasePassForForwardShadingVertexShader.usf: Base pass vertex shader used with forward shading
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=============================================================================*/
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#define IS_FORWARD_BASEPASS_VERTEX_SHADER 1
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// @todo urban: branch was: #define FORCE_FLOATS 1
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#define FORCE_FLOATS (COMPILER_METAL)
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#include "Common.usf"
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#include "BasePassForForwardShadingCommon.usf"
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#include "Material.usf"
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#include "VertexFactory.usf"
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#include "HeightFogCommon.usf"
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struct FForwardShadingBasePassVSToPS
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{
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FVertexFactoryInterpolantsVSToPS FactoryInterpolants;
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FForwardShadingBasePassInterpolantsVSToPS BasePassInterpolants;
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float4 Position : SV_POSITION;
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};
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#define FForwardShadingBasePassVSOutput FForwardShadingBasePassVSToPS
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#define VertexFactoryGetInterpolants VertexFactoryGetInterpolantsVSToPS
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/** Entry point for the base pass vertex shader. */
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void Main(
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FVertexFactoryInput Input,
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out FForwardShadingBasePassVSOutput Output
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)
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{
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#if PACK_INTERPOLANTS
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float4 PackedInterps[NUM_VF_PACKED_INTERPOLANTS];
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UNROLL
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for(int i = 0; i < NUM_VF_PACKED_INTERPOLANTS; ++i)
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{
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PackedInterps[i] = 0;
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}
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#endif
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FVertexFactoryIntermediates VFIntermediates = GetVertexFactoryIntermediates(Input);
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float4 WorldPositionExcludingWPO = VertexFactoryGetWorldPosition(Input, VFIntermediates);
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float4 WorldPosition = WorldPositionExcludingWPO;
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half3x3 TangentToLocal = VertexFactoryGetTangentToLocal(Input, VFIntermediates);
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FMaterialVertexParameters VertexParameters = GetMaterialVertexParameters(Input, VFIntermediates, WorldPosition.xyz, TangentToLocal);
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half3 WorldPositionOffset = GetMaterialWorldPositionOffset(VertexParameters);
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WorldPosition.xyz += WorldPositionOffset;
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float4 RasterizedWorldPosition = VertexFactoryGetRasterizedWorldPosition(Input, VFIntermediates, WorldPosition);
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Output.Position = mul(RasterizedWorldPosition, View.TranslatedWorldToClip);
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Output.BasePassInterpolants.PixelPosition = WorldPosition;
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#if USE_WORLD_POSITION_EXCLUDING_SHADER_OFFSETS
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Output.BasePassInterpolants.PixelPositionExcludingWPO = WorldPositionExcludingWPO.xyz;
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#endif
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#if USE_VERTEX_FOG
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#if PACK_INTERPOLANTS
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PackedInterps[0] = CalculateVertexHeightFog(WorldPosition.xyz, float4(View.TranslatedWorldCameraOrigin, 1));
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#else
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Output.BasePassInterpolants.VertexFog = CalculateVertexHeightFog(WorldPosition.xyz, float4(View.TranslatedWorldCameraOrigin, 1));
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#endif // PACK_INTERPOLANTS
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#endif
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#if LANDSCAPE_BUG_WORKAROUND
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Output.BasePassInterpolants.DummyInterp = 0;
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#endif
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Output.FactoryInterpolants = VertexFactoryGetInterpolants(Input, VFIntermediates, VertexParameters);
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Output.BasePassInterpolants.PixelPosition.w = Output.Position.w;
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#if PACK_INTERPOLANTS
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VertexFactoryPackInterpolants(Output.FactoryInterpolants, PackedInterps);
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#endif // PACK_INTERPOLANTS
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#if OUTPUT_GAMMA_SPACE && COMPILER_GLSL_ES2
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Output.Position.y *= -1;
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#endif
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}
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