像素化

Assets/ThemeBundles/DepartureToMultiverse/Shders/PixelatePass.hlsl

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+#ifndef PIXELATE_PASS_INCLUDED
+#define PIXELATE_PASS_INCLUDED
+
+#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
+
+TEXTURE2D(_SourceTexture);
+SAMPLER(sampler_SourceTexture);
+float4 _SourceTexture_TexelSize;
+
+float _PixelateStrengthX;
+float _PixelateStrengthY;
+
+struct Varyings
+{
+    float4 positionCS_SS : SV_POSITION;
+    float2 screenUV : VAR_SCREEN_UV;
+};
+
+Varyings PixelatePassVert(uint vertexID : SV_VertexID)
+{
+    Varyings output;
+    output.positionCS_SS = float4(
+        vertexID <= 1 ? -1.0 : 3.0,
+        vertexID == 1 ? 3.0 : -1.0,
+        0.0, 1.0
+    );
+    output.screenUV = float2(
+        vertexID <= 1 ? 0.0 : 2.0,
+        vertexID == 1 ? 2.0 : 0.0
+    );
+    if (_ProjectionParams.x < 0.0)
+    {
+        output.screenUV.y = 1.0 - output.screenUV.y;
+    }
+    return output;
+}
+
+half4 PixelatePassFrag(Varyings input) : SV_Target
+{
+    float2 screenUV = input.screenUV;
+    float2 strength = float2(_PixelateStrengthX, _PixelateStrengthY);
+    float2 uvScaled = screenUV * strength;
+    float2 uvFloor = floor(uvScaled);
+    float2 uvCenter = uvFloor + 0.5;
+    float2 uvPixelated = uvCenter / strength;
+
+    return SAMPLE_TEXTURE2D(_SourceTexture, sampler_SourceTexture, uvPixelated);
+}
+
+#endif