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#jira none #rb Dmitriy.Dyomin #preflight shader [CL 24728638 by Wei Liu in ue5-main branch]
100 lines
3.3 KiB
Plaintext
100 lines
3.3 KiB
Plaintext
// Copyright Epic Games, Inc. All Rights Reserved.
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/*=============================================================================
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DepthOnlyVertexShader.hlsl: Depth-only vertex shader.
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=============================================================================*/
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#include "Common.ush"
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#include "/Engine/Generated/Material.ush"
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#include "/Engine/Generated/VertexFactory.ush"
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#define USE_RAW_WORLD_POSITION ((!MATERIALBLENDING_SOLID || OUTPUT_PIXEL_DEPTH_OFFSET) && USE_WORLD_POSITION_EXCLUDING_SHADER_OFFSETS)
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struct FDepthOnlyVSToPS
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{
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float4 Position : SV_POSITION;
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#if !MATERIALBLENDING_SOLID || OUTPUT_PIXEL_DEPTH_OFFSET
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FVertexFactoryInterpolantsVSToPS FactoryInterpolants;
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float4 PixelPosition : TEXCOORD6;
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#endif
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#if USE_RAW_WORLD_POSITION
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float3 PixelPositionExcludingWPO : TEXCOORD7;
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#endif
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};
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#define FDepthOnlyVSOutput FDepthOnlyVSToPS
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#define VertexFactoryGetInterpolants VertexFactoryGetInterpolantsVSToPS
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#if VERTEXSHADER
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void Main(
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FVertexFactoryInput Input,
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out FDepthOnlyVSOutput Output
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#if USE_GLOBAL_CLIP_PLANE
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, out float OutGlobalClipPlaneDistance : SV_ClipDistance
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#endif
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#if INSTANCED_STEREO
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, out uint ViewportIndex : SV_ViewPortArrayIndex
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#endif
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)
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{
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#if INSTANCED_STEREO
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uint EyeIndex = GetEyeIndexFromVF(Input);
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ViewportIndex = EyeIndex;
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#endif
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ResolvedView = ResolveViewFromVF(Input);
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FVertexFactoryIntermediates VFIntermediates = GetVertexFactoryIntermediates(Input);
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float4 WorldPos = VertexFactoryGetWorldPosition(Input, VFIntermediates);
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float4 WorldPositionExcludingWPO = WorldPos;
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half3x3 TangentToLocal = VertexFactoryGetTangentToLocal(Input, VFIntermediates);
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FMaterialVertexParameters VertexParameters = GetMaterialVertexParameters(Input, VFIntermediates, WorldPos.xyz, TangentToLocal);
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// Isolate instructions used for world position offset
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// As these cause the optimizer to generate different position calculating instructions in each pass, resulting in self-z-fighting.
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// This is only necessary for shaders used in passes that have depth testing enabled.
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{
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WorldPos.xyz += GetMaterialWorldPositionOffset(VertexParameters);
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}
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{
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float4 RasterizedWorldPosition = VertexFactoryGetRasterizedWorldPosition(Input, VFIntermediates, WorldPos);
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Output.Position = INVARIANT(mul(RasterizedWorldPosition, ResolvedView.TranslatedWorldToClip));
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}
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#if XBOXONE_BIAS_HACK
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// XB1 needs a bias in the opposite direction to fix FORT-40853
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// XBOXONE_BIAS_HACK is defined only in a custom node in a particular material
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// This should be removed with a future shader compiler update
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Output.Position.z -= 0.0001 * Output.Position.w;
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#endif
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#if USE_GLOBAL_CLIP_PLANE
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OutGlobalClipPlaneDistance = dot(ResolvedView.GlobalClippingPlane, float4(WorldPos.xyz, 1));
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#endif
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#if !MATERIALBLENDING_SOLID || OUTPUT_PIXEL_DEPTH_OFFSET
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// Masked and transparent materials need texture coords to clip, and tessellated
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// materials need texture coords to displace
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Output.FactoryInterpolants = VertexFactoryGetInterpolants(Input, VFIntermediates, VertexParameters);
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#if INSTANCED_STEREO
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Output.FactoryInterpolants.EyeIndex = EyeIndex;
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#endif
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#endif
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#if !MATERIALBLENDING_SOLID || OUTPUT_PIXEL_DEPTH_OFFSET
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Output.PixelPosition = WorldPos;
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#endif
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#if USE_RAW_WORLD_POSITION
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Output.PixelPositionExcludingWPO = WorldPositionExcludingWPO.xyz;
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#endif
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}
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#endif // VERTEXSHADER
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