@animech-public/playcanvas/build/playcanvas/src/scene/shader-lib/chunks/lightmapper/frag/bilateralDeNoise.js

PlayCanvas WebGL game engine

var t="\nfloat normpdf3(in vec3 v, in float sigma) {\n\treturn 0.39894 * exp(-0.5 * dot(v, v) / (sigma * sigma)) / sigma;\n}\nvec3 decodeRGBM(vec4 rgbm) {\n\tvec3 color = (8.0 * rgbm.a) * rgbm.rgb;\n\treturn color * color;\n}\nfloat saturate(float x) {\n\treturn clamp(x, 0.0, 1.0);\n}\nvec4 encodeRGBM(vec3 color) {\n\tvec4 encoded;\n\tencoded.rgb = pow(color.rgb, vec3(0.5));\n\tencoded.rgb *= 1.0 / 8.0;\n\tencoded.a = saturate( max( max( encoded.r, encoded.g ), max( encoded.b, 1.0 / 255.0 ) ) );\n\tencoded.a = ceil(encoded.a * 255.0) / 255.0;\n\tencoded.rgb /= encoded.a;\n\treturn encoded;\n}\n#define MSIZE 15\nvarying vec2 vUv0;\nuniform sampler2D source;\nuniform vec2 pixelOffset;\nuniform vec2 sigmas;\nuniform float bZnorm;\nuniform float kernel[MSIZE];\nvoid main(void) {\n\t\n\tvec4 pixelRgbm = texture2DLodEXT(source, vUv0, 0.0);\n\tif (pixelRgbm.a <= 0.0) {\n\t\tgl_FragColor = pixelRgbm;\n\t\treturn ;\n\t}\n\tfloat sigma = sigmas.x;\n\tfloat bSigma = sigmas.y;\n\tvec3 pixelHdr = decodeRGBM(pixelRgbm);\n\tvec3 accumulatedHdr = vec3(0.0);\n\tfloat accumulatedFactor = 0.0;\n\tconst int kSize = (MSIZE-1)/2;\n\tfor (int i = -kSize; i <= kSize; ++i) {\n\t\tfor (int j = -kSize; j <= kSize; ++j) {\n\t\t\t\n\t\t\tvec2 coord = vUv0 + vec2(float(i), float(j)) * pixelOffset;\n\t\t\tvec4 rgbm = texture2DLodEXT(source, coord, 0.0);\n\t\t\tif (rgbm.a > 0.0) {\n\t\t\t\tvec3 hdr = decodeRGBM(rgbm);\n\t\t\t\tfloat factor = kernel[kSize + j] * kernel[kSize + i];\n\t\t\t\tfactor *= normpdf3(hdr - pixelHdr, bSigma) * bZnorm;\n\t\t\t\taccumulatedHdr += factor * hdr;\n\t\t\t\taccumulatedFactor += factor;\n\t\t\t}\n\t\t}\n\t}\n\tgl_FragColor = encodeRGBM(accumulatedHdr / accumulatedFactor);\n}\n";export{t as default};