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#rb none #ROBOMERGE-OWNER: charles.derousiers #ROBOMERGE-AUTHOR: charles.derousiers #ROBOMERGE-SOURCE: CL 16566234 #ROBOMERGE-BOT: (v828-16531559) #ROBOMERGE-CONFLICT from-shelf [CL 16566334 by charles derousiers in ue5-main branch]
66 lines
1.9 KiB
Plaintext
66 lines
1.9 KiB
Plaintext
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Common.ush"
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#include "ShaderDrawDebug.ush"
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// The shader used to render the debug element on view
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StructuredBuffer<FPackedShaderDrawElement> ShaderDrawDebugPrimitive;
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Texture2D<float> DepthTexture;
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int2 DepthTextureResolution;
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float2 DepthTextureInvResolution;
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SamplerState DepthSampler;
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#if GPU_DEBUG_RENDERING_VS
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void ShaderDrawDebugVS(
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in uint InstanceId : SV_InstanceID,
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in uint VertexId : SV_VertexID,
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out float4 Position : SV_POSITION,
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out float4 ColorAlpha : TEXCOORD0)
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{
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FPackedShaderDrawElement PackedLine = ShaderDrawDebugPrimitive[InstanceId];
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FShaderDrawElement Line = UnpackShaderElement(PackedLine);
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float4 VertexPosition = float4(VertexId == 0 ? Line.Pos0 : Line.Pos1, 1.0f);
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float4 VertexColor = VertexId == 0 ? Line.Color0 : Line.Color1;
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Position = mul(VertexPosition, View.WorldToClip);
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ColorAlpha = VertexColor;
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}
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#endif
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#if GPU_DEBUG_RENDERING_PS
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void ShaderDrawDebugPS(
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in float4 Position : SV_POSITION,
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in float4 ColorAlpha : TEXCOORD0,
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out float4 OutSceneColor : SV_Target0)
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{
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uint2 PixelCoord = Position.xy;
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const float2 DepthUV = float2(PixelCoord) * DepthTextureInvResolution;
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const float Depth = DepthTexture.SampleLevel(DepthSampler, DepthUV, 0);
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const bool bIsHidden = Position.z < Depth; // Reverse-Z
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const float ColorScale = bIsHidden ? 0.4f : 1;
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const float CheckerboardScale = ((PixelCoord.x%2) ^ (PixelCoord.y%2)) > 0 ? 1 : 0.0;
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const float OcclusionScale = bIsHidden ? CheckerboardScale : 1;
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OutSceneColor = OcclusionScale * ColorAlpha * float4(ColorAlpha.aaa * ColorScale, 1.0); // Pre multiplied alpha with color scale
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}
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#endif
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#if GPU_DEBUG_RENDERING_CLEAR_CS
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RWStructuredBuffer<FPackedShaderDrawElement> DataBuffer;
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RWBuffer<uint> IndirectBuffer;
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[numthreads(1, 1, 1)]
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void ShaderDrawDebugClearCS(uint3 DispatchThreadId : SV_DispatchThreadID)
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{
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IndirectBuffer[0] = 2;
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IndirectBuffer[1] = 0;
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IndirectBuffer[2] = 0;
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IndirectBuffer[3] = 0;
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}
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#endif |