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#rb Guillaume.Abadie #preflight 62bc5528e353c20ac245329d #ROBOMERGE-AUTHOR: tiago.costa #ROBOMERGE-SOURCE: CL 20874253 via CL 20874263 via CL 20874279 #ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v971-20777995) [CL 20876979 by tiago costa in ue5-main branch]
56 lines
2.1 KiB
Plaintext
56 lines
2.1 KiB
Plaintext
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Common.ush"
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#include "ScreenPass.ush"
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#include "PostProcessHistogramCommon.ush"
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SCREEN_PASS_TEXTURE_VIEWPORT(Input)
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SCREEN_PASS_TEXTURE_VIEWPORT(Output)
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Texture2D InputTexture;
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Texture2D EyeAdaptationTexture;
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Texture3D LumBilateralGrid;
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Texture2D BlurredLogLum;
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SamplerState TextureSampler;
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RWTexture2D<float> OutputFloat;
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RWTexture2D<float4> OutputFloat4;
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[numthreads(THREADGROUP_SIZEX, THREADGROUP_SIZEY, 1)]
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void SetupLogLuminanceCS(uint3 DispatchThreadId : SV_DispatchThreadID)
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{
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float3 SceneColor = InputTexture.Load(uint3(Input_ViewportMin + DispatchThreadId.xy, 0)).rgb * View.OneOverPreExposure;
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float LuminanceVal = CalculateEyeAdaptationLuminance(SceneColor);
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OutputFloat[DispatchThreadId.xy] = log2(LuminanceVal);
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}
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[numthreads(THREADGROUP_SIZEX, THREADGROUP_SIZEY, 1)]
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void ApplyLocalExposureCS(uint2 DispatchThreadId : SV_DispatchThreadID)
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{
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uint2 OutputPixelPos = DispatchThreadId + Output_ViewportMin;
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if (all(OutputPixelPos < Output_ViewportMax))
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{
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const float2 UV = (DispatchThreadId + 0.5f) * Output_ExtentInverse;
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float2 ExposureScaleMiddleGrey = EyeAdaptationTexture.Load(int3(0, 0, 0)).xw;
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float ExposureScale = ExposureScaleMiddleGrey.x;
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float MiddleGreyLumValue = log2(0.18 * ExposureScaleMiddleGrey.y * EyeAdaptation_LocalExposureMiddleGreyExposureCompensation);
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float4 SceneColor = InputTexture.Load(uint3(DispatchThreadId + Input_ViewportMin, 0));
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float LuminanceVal = CalculateEyeAdaptationLuminance(SceneColor.rgb * View.OneOverPreExposure);
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float LogLuminance = log2(LuminanceVal);
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float BaseLogLum = CalculateBaseLogLuminance(LogLuminance, EyeAdaptation_LocalExposureBlurredLuminanceBlend, ExposureScale, UV, LumBilateralGrid, BlurredLogLum, TextureSampler, TextureSampler);
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float LocalExposure = CalculateLocalExposure(LogLuminance + log2(ExposureScale), BaseLogLum, MiddleGreyLumValue, EyeAdaptation_LocalExposureHighlightContrastScale, EyeAdaptation_LocalExposureShadowContrastScale, EyeAdaptation_LocalExposureDetailStrength);
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SceneColor.rgb *= LocalExposure;
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OutputFloat4[OutputPixelPos] = SceneColor;
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}
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}
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