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81 lines
3.6 KiB
81 lines
3.6 KiB
#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/ShaderLibrary/ShaderVariables.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/Material/Builtin/BuiltinData.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/PostProcessing/Shaders/PostProcessDefines.hlsl"
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Filtering.hlsl"
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#pragma kernel SharpenCS
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#pragma only_renderers d3d11 playstation xboxone xboxseries vulkan metal switch switch2
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TEXTURE2D_X(_InputTexture);
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RW_TEXTURE2D_X(CTYPE, _OutputTexture);
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#pragma multi_compile _ ENABLE_ALPHA
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#pragma multi_compile _ CLAMP_RINGING
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float4 _SharpenParams;
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#define _SharpenStrength _SharpenParams.x
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#define _RingingReduction _SharpenParams.y
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float3 GetBlurred(float2 UV)
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{
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float2 delta = _PostProcessScreenSize.zw;
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float3 s0 = SAMPLE_TEXTURE2D_X_LOD(_InputTexture, s_linear_clamp_sampler, ClampAndScaleUVForBilinearPostProcessTexture(UV + float2(delta.x, 0)), 0).xyz;
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float3 s1 = SAMPLE_TEXTURE2D_X_LOD(_InputTexture, s_linear_clamp_sampler, ClampAndScaleUVForBilinearPostProcessTexture(UV + float2(-delta.x, 0)), 0).xyz;
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float3 s2 = SAMPLE_TEXTURE2D_X_LOD(_InputTexture, s_linear_clamp_sampler, ClampAndScaleUVForBilinearPostProcessTexture(UV + float2(0, delta.y)), 0).xyz;
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float3 s3 = SAMPLE_TEXTURE2D_X_LOD(_InputTexture, s_linear_clamp_sampler, ClampAndScaleUVForBilinearPostProcessTexture(UV + float2(0, -delta.y)), 0).xyz;
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float3 blurred = s0 + s1 + s2 + s3;
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blurred *= 0.25f;
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return blurred;
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}
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float3 GetSharpenedResult(float3 original, float2 UV)
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{
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float3 blurry = GetBlurred(UV);
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float3 diff = (original - blurry);
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float3 sharpened = original + (original - blurry) * _SharpenStrength;
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#ifdef CLAMP_RINGING
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{
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float3 clampedSharp = sharpened;
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// Get a gather result around a local window.
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float4 gatherData = GATHER_RED_TEXTURE2D_X(_InputTexture, s_point_clamp_sampler, ClampAndScaleUVForBilinearPostProcessTexture(UV));
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float minC = Min3(gatherData.x, gatherData.y, min(gatherData.z, gatherData.w));
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float maxC = Max3(gatherData.x, gatherData.y, max(gatherData.z, gatherData.w));
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clampedSharp.r = clamp(clampedSharp.r, minC, maxC);
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gatherData = GATHER_GREEN_TEXTURE2D_X(_InputTexture, s_point_clamp_sampler, ClampAndScaleUVForBilinearPostProcessTexture(UV));
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minC = Min3(gatherData.x, gatherData.y, min(gatherData.z, gatherData.w));
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maxC = Max3(gatherData.x, gatherData.y, max(gatherData.z, gatherData.w));
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clampedSharp.g = clamp(clampedSharp.g, minC, maxC);
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gatherData = GATHER_BLUE_TEXTURE2D_X(_InputTexture, s_point_clamp_sampler, ClampAndScaleUVForBilinearPostProcessTexture(UV));
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minC = Min3(gatherData.x, gatherData.y, min(gatherData.z, gatherData.w));
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maxC = Max3(gatherData.x, gatherData.y, max(gatherData.z, gatherData.w));
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clampedSharp.b = clamp(clampedSharp.b, minC, maxC);
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sharpened = lerp(sharpened, clampedSharp, _RingingReduction);
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}
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#endif
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return sharpened;
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}
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[numthreads(8, 8, 1)]
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void SharpenCS(uint3 dispatchThreadId : SV_DispatchThreadID)
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{
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UNITY_XR_ASSIGN_VIEW_INDEX(dispatchThreadId.z);
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float2 UV = (dispatchThreadId.xy + 0.5) * _PostProcessScreenSize.zw;
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float4 original = _InputTexture[COORD_TEXTURE2D_X(dispatchThreadId.xy)];
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float3 sharpened = GetSharpenedResult(original.xyz, UV);
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_OutputTexture[COORD_TEXTURE2D_X(dispatchThreadId.xy)] = float4(sharpened.xyz, original.a).CTYPE_SWIZZLE;
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}
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