playcanvas/build/playcanvas/src/scene/shader-lib/glsl/chunks/render-pass/frag/dofBlur.d.ts

PlayCanvas WebGL game engine

declare const _default: "\n    #if defined(NEAR_BLUR)\n        uniform sampler2D nearTexture;\n    #endif\n    uniform sampler2D farTexture;\n    uniform sampler2D cocTexture;\n\n    uniform vec2 kernel[{KERNEL_COUNT}];\n    uniform float blurRadiusNear;\n    uniform float blurRadiusFar;\n\n    varying vec2 uv0;\n\n    void main()\n    {\n        vec2 coc = texture2D(cocTexture, uv0).rg;\n        float cocFar = coc.r;\n\n        vec3 sum = vec3(0.0, 0.0, 0.0);\n\n        #if defined(NEAR_BLUR)\n            // near blur\n            float cocNear = coc.g;\n            if (cocNear > 0.0001) {\n\n                ivec2 nearTextureSize = textureSize(nearTexture, 0);\n                vec2 step = cocNear * blurRadiusNear / vec2(nearTextureSize);\n\n                for (int i = 0; i < {KERNEL_COUNT}; i++) {\n                    vec2 uv = uv0 + step * kernel[i];\n                    vec3 tap = texture2DLod(nearTexture, uv, 0.0).rgb;\n                    sum += tap.rgb;\n                }\n\n                sum *= float({INV_KERNEL_COUNT});\n\n            } else\n        #endif\n            \n            if (cocFar > 0.0001) { // far blur\n\n            ivec2 farTextureSize = textureSize(farTexture, 0);\n            vec2 step = cocFar * blurRadiusFar / vec2(farTextureSize);\n\n            float sumCoC = 0.0; \n            for (int i = 0; i < {KERNEL_COUNT}; i++) {\n                vec2 uv = uv0 + step * kernel[i];\n                vec3 tap = texture2DLod(farTexture, uv, 0.0).rgb;\n\n                // block out sharp objects to avoid leaking to far blur\n                float cocThis = texture2DLod(cocTexture, uv, 0.0).r;\n                tap *= cocThis;\n                sumCoC += cocThis;\n\n                sum += tap;\n            }\n\n            // average out the sum\n            if (sumCoC > 0.0)\n                sum /= sumCoC;\n\n            // compensate for the fact the farTexture was premultiplied by CoC\n            sum /= cocFar;\n        }\n\n        pcFragColor0 = vec4(sum, 1.0);\n    }\n";
export default _default;