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7ba5023e71
- Also support contrast scale > 1. #jira UE-143419 #rb Guillaume.Abadie #lockdown juan.canada #preflight 6214ded2a97c2c3348ca3336 #ROBOMERGE-AUTHOR: tiago.costa #ROBOMERGE-SOURCE: CL 19074464 in //UE5/Release-5.0/... via CL 19090589 #ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v921-19075845) [CL 19135312 by tiago costa in ue5-main branch]
57 lines
1.9 KiB
Plaintext
57 lines
1.9 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 "PostProcessCommon.ush"
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#include "PostProcessHistogramCommon.ush"
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#include "DeferredShadingCommon.ush"
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#include "TonemapCommon.ush"
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Texture2D EyeAdaptationTexture;
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Texture2D HDRSceneColorTexture;
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Texture3D LumBilateralGrid;
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Texture2D BlurredLogLum;
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SamplerState TextureSampler;
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uint DebugMode;
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SCREEN_PASS_TEXTURE_VIEWPORT(Input)
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SCREEN_PASS_TEXTURE_VIEWPORT(Output)
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float4 MainPS(noperspective float4 UVAndScreenPos : TEXCOORD0, float4 SvPosition : SV_POSITION) : SV_Target0
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{
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float2 UV = UVAndScreenPos.xy;
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int2 PixelPos = (int2)SvPosition.xy;
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float2 ExposureScaleMiddleGrey = EyeAdaptationTexture.Load(int3(0, 0, 0)).xw;
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float4 SceneColor = Texture2DSample(HDRSceneColorTexture, TextureSampler, UV) * View.OneOverPreExposure;
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float LuminanceVal = CalculateEyeAdaptationLuminance(SceneColor.rgb);
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float LogLuminance = log2(LuminanceVal);
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float MiddleGreyLumValue = log2(0.18 * ExposureScaleMiddleGrey.y * EyeAdaptation_LocalExposureMiddleGreyExposureCompensation);
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float BaseLogLum = CalculateBaseLogLuminance(LogLuminance, EyeAdaptation_LocalExposureBlurredLuminanceBlend, ExposureScaleMiddleGrey.x, UV, LumBilateralGrid, BlurredLogLum, TextureSampler, TextureSampler);
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float LocalExposure = CalculateLocalExposure(LogLuminance + log2(ExposureScaleMiddleGrey.x), BaseLogLum, MiddleGreyLumValue, EyeAdaptation_LocalExposureContrastScale, EyeAdaptation_LocalExposureDetailStrength);
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float DetailLogLum = (LogLuminance + log2(ExposureScaleMiddleGrey.x)) - BaseLogLum;
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float3 OutValue;
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if (DebugMode == 0)
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{
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OutValue = saturate(abs(log2(LocalExposure) / 2)) * lerp(float3(1.0f, 0.0f, 0.0f), float3(0.0f, 1.0f, 0.0f), step(LocalExposure, 1));
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}
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else if (DebugMode == 1)
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{
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OutValue = exp2(BaseLogLum);
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}
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else if (DebugMode == 2)
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{
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OutValue = exp2(DetailLogLum);
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}
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return float4(OutValue, 1.0f);
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} |