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playcanvas

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PlayCanvas WebGL game engine

playcanvas.com

playcanvas/engine

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declare const _default: "\n\nvar uSceneDepthMap: texture_2d<f32>;\nvar uSceneDepthMapSampler: sampler;\n\n#ifndef SCREENSIZE\n #define SCREENSIZE\n uniform uScreenSize: vec4f;\n#endif\n\n#ifndef VIEWMATRIX\n #define VIEWMATRIX\n uniform matrix_view: mat4x4f;\n#endif\n\n#ifndef LINEARIZE_DEPTH\n #define LINEARIZE_DEPTH\n\n #ifndef CAMERAPLANES\n #define CAMERAPLANES\n uniform camera_params: vec4f; // x: 1 / camera_far, y: camera_far, z: camera_near, w: is_ortho\n #endif\n\n fn linearizeDepth(z: f32) -> f32 {\n if (uniform.camera_params.w == 0.0) { // Perspective\n return (uniform.camera_params.z * uniform.camera_params.y) / (uniform.camera_params.y + z * (uniform.camera_params.z - uniform.camera_params.y));\n } else {\n return uniform.camera_params.z + z * (uniform.camera_params.y - uniform.camera_params.z);\n }\n }\n#endif\n\nfn delinearizeDepth(linearDepth: f32) -> f32 {\n if (uniform.camera_params.w == 0.0) {\n return (uniform.camera_params.y * (uniform.camera_params.z - linearDepth)) / (linearDepth * (uniform.camera_params.z - uniform.camera_params.y));\n } else {\n return (linearDepth - uniform.camera_params.z) / (uniform.camera_params.y - uniform.camera_params.z);\n }\n}\n\n// Retrieves rendered linear camera depth by UV\nfn getLinearScreenDepth(uv: vec2f) -> f32 {\n #ifdef SCENE_DEPTHMAP_LINEAR\n #ifdef SCENE_DEPTHMAP_FLOAT\n return textureSample(uSceneDepthMap, uSceneDepthMapSampler, uv).r;\n #else\n\n let textureSize = textureDimensions(uSceneDepthMap, 0);\n let texel: vec2i = vec2i(uv * vec2f(textureSize));\n let data: vec4f = textureLoad(uSceneDepthMap, texel, 0);\n\n let data_u32: vec4u = vec4u(data * 255.0);\n let intBits: u32 = (data_u32.r << 24u) | (data_u32.g << 16u) | (data_u32.b << 8u) | data_u32.a;\n\n return bitcast<f32>(intBits);\n\n #endif\n #else\n return linearizeDepth(textureSample(uSceneDepthMap, uSceneDepthMapSampler, uv).r);\n #endif\n}\n\n#ifndef VERTEXSHADER\n // Retrieves rendered linear camera depth under the current pixel\n fn getLinearScreenDepthFrag() -> f32 {\n let uv: vec2f = pcPosition.xy * uniform.uScreenSize.zw;\n return getLinearScreenDepth(uv);\n }\n#endif\n\n// Generates linear camera depth for the given world position\nfn getLinearDepth(pos: vec3f) -> f32 {\n return -(uniform.matrix_view * vec4f(pos, 1.0)).z;\n}\n"; export default _default;