//---------------------------------------------------------------------------------------------------------- // X-PostProcessing Library // https://github.com/QianMo/X-PostProcessing-Library // Copyright (C) 2020 QianMo. All rights reserved. // Licensed under the MIT License // You may not use this file except in compliance with the License.You may obtain a copy of the License at // http://opensource.org/licenses/MIT //---------------------------------------------------------------------------------------------------------- Shader "Hidden/X-PostProcessing/GaussianBlur" { HLSLINCLUDE #include "../../../Shaders/StdLib.hlsl" #include "../../../Shaders/XPostProcessing.hlsl" half4 _BlurOffset; struct v2f { float4 pos: POSITION; float2 uv: TEXCOORD0; float4 uv01: TEXCOORD1; float4 uv23: TEXCOORD2; float4 uv45: TEXCOORD3; }; v2f VertGaussianBlur(AttributesDefault v) { v2f o; o.pos = float4(v.vertex.xy, 0, 1); o.uv.xy = TransformTriangleVertexToUV(o.pos.xy); #if UNITY_UV_STARTS_AT_TOP o.uv = o.uv * float2(1.0, -1.0) + float2(0.0, 1.0); #endif o.uv = TransformStereoScreenSpaceTex(o.uv, 1.0); o.uv01 = o.uv.xyxy + _BlurOffset.xyxy * float4(1, 1, -1, -1); o.uv23 = o.uv.xyxy + _BlurOffset.xyxy * float4(1, 1, -1, -1) * 2.0; o.uv45 = o.uv.xyxy + _BlurOffset.xyxy * float4(1, 1, -1, -1) * 6.0; return o; } float4 FragGaussianBlur(v2f i): SV_Target { half4 color = float4(0, 0, 0, 0); color += 0.40 * SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.uv); color += 0.15 * SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.uv01.xy); color += 0.15 * SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.uv01.zw); color += 0.10 * SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.uv23.xy); color += 0.10 * SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.uv23.zw); color += 0.05 * SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.uv45.xy); color += 0.05 * SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.uv45.zw); return color; } float4 FragCombine(VaryingsDefault i): SV_Target { return SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.texcoordStereo); } ENDHLSL SubShader { Cull Off ZWrite Off ZTest Always Pass { HLSLPROGRAM #pragma vertex VertGaussianBlur #pragma fragment FragGaussianBlur ENDHLSL } Pass { HLSLPROGRAM #pragma vertex VertDefault #pragma fragment FragCombine ENDHLSL } } }