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playcanvas

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Open-source WebGL/WebGPU 3D engine for the web

playcanvas.com

playcanvas/engine

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declare const _default: "\n\n#ifndef DITHER_NONE\n #include \"bayerPS\"\n #include \"opacityDitherPS\"\n varying id: f32;\n#endif\n\n#if defined(SHADOW_PASS) || defined(PICK_PASS) || defined(PREPASS_PASS)\n uniform alphaClip: f32;\n#endif\n\n#ifdef PREPASS_PASS\n varying vLinearDepth: f32;\n #include \"floatAsUintPS\"\n#endif\n\n#if !defined(SHADOW_PASS) && !defined(PICK_PASS) && !defined(PREPASS_PASS)\n uniform alphaClipForward: f32;\n#endif\n\nconst EXP4: half = exp(half(-4.0));\nconst INV_EXP4: half = half(1.0) / (half(1.0) - EXP4);\n\nfn normExp(x: half) -> half {\n return (exp(x * half(-4.0)) - EXP4) * INV_EXP4;\n}\n\nvarying gaussianUV: half2;\nvarying gaussianColor: half4;\n\n#if defined(GSPLAT_UNIFIED_ID) && defined(PICK_PASS)\n varying @interpolate(flat) vPickId: u32;\n#endif\n\n#ifdef PICK_PASS\n #include \"pickPS\"\n#endif\n\n@fragment\nfn fragmentMain(input: FragmentInput) -> FragmentOutput {\n var output: FragmentOutput;\n\n let A: half = dot(gaussianUV, gaussianUV);\n if (A > half(1.0)) {\n discard;\n return output;\n }\n\n // evaluate alpha\n var alpha: half = normExp(A) * gaussianColor.a;\n\n #if defined(SHADOW_PASS) || defined(PICK_PASS) || defined(PREPASS_PASS)\n if (alpha < half(uniform.alphaClip)) {\n discard;\n return output;\n }\n #endif\n\n #ifdef PICK_PASS\n\n #ifdef GSPLAT_UNIFIED_ID\n // Use component ID from work buffer (passed via varying)\n output.color = encodePickOutput(vPickId);\n #else\n // Use standard meshInstanceId path\n output.color = getPickOutput();\n #endif\n #ifdef DEPTH_PICK_PASS\n output.color1 = getPickDepth();\n #endif\n\n #elif SHADOW_PASS\n\n output.color = vec4f(0.0, 0.0, 0.0, 1.0);\n\n #elif PREPASS_PASS\n\n output.color = float2vec4(vLinearDepth);\n\n #else\n\n if (alpha < half(uniform.alphaClipForward)) {\n discard;\n return output;\n }\n\n #ifndef DITHER_NONE\n opacityDither(f32(alpha), id * 0.013);\n #endif\n\n output.color = vec4f(vec3f(gaussianColor.xyz * alpha), f32(alpha));\n #endif\n\n return output;\n}"; export default _default;