42 lines
1.5 KiB
Plaintext
42 lines
1.5 KiB
Plaintext
Shader "Hidden/Custom/Pixelate"
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{
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SubShader
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{
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Tags { "RenderPipeline" = "UniversalPipeline" }
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ZTest Always Cull Off ZWrite Off
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Pass
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{
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Name "PixelatePass"
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HLSLPROGRAM
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#pragma vertex Vert
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#pragma fragment Frag
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#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
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// URP 提供的前端 Blit 工具，拥有内置的 Varyings, Vert 函数和防颠倒运算
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#include "Packages/com.unity.render-pipelines.core/Runtime/Utilities/Blit.hlsl"
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float _PixelateStrengthX;
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float _PixelateStrengthY;
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half4 Frag(Varyings input) : SV_Target
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{
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float2 uv = input.texcoord;
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float2 resolutionRatio = saturate(float2(_PixelateStrengthX, _PixelateStrengthY));
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// 使用当前渲染目标分辨率，而不是设备固定分辨率，兼容动态分辨率和渲染缩放。
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float2 targetResolution = max(floor(_ScreenParams.xy * resolutionRatio), float2(1.0, 1.0));
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float2 uvScaled = uv * targetResolution;
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float2 uvFloor = floor(uvScaled);
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float2 uvCenter = uvFloor + 0.5;
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float2 uvPixelated = uvCenter / targetResolution;
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// Blitter框架将自动把 SourceTexture 注入为 _BlitTexture
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return SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_LinearClamp, uvPixelated);
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}
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ENDHLSL
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}
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}
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}
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