playcanvas/build/playcanvas.dbg/src/scene/shader-lib/chunks/lit/frag/ambient.js

PlayCanvas WebGL game engine

var ambientPS = '\n\n#ifdef LIT_AMBIENT_SOURCE == AMBIENTSH\n    uniform vec3 ambientSH[9];\n#endif\n\n#if LIT_AMBIENT_SOURCE == ENVALATLAS\n    #include "envAtlasPS"\n\n    #ifndef ENV_ATLAS\n    #define ENV_ATLAS\n    uniform sampler2D texture_envAtlas;\n    #endif\n#endif\n\nvoid addAmbient(vec3 worldNormal) {\n    #ifdef LIT_AMBIENT_SOURCE == AMBIENTSH\n\n        vec3 n = cubeMapRotate(worldNormal);\n        vec3 color =\n            ambientSH[0] +\n            ambientSH[1] * n.x +\n            ambientSH[2] * n.y +\n            ambientSH[3] * n.z +\n            ambientSH[4] * n.x * n.z +\n            ambientSH[5] * n.z * n.y +\n            ambientSH[6] * n.y * n.x +\n            ambientSH[7] * (3.0 * n.z * n.z - 1.0) +\n            ambientSH[8] * (n.x * n.x - n.y * n.y);\n\n        dDiffuseLight += processEnvironment(max(color, vec3(0.0)));\n\n    #endif\n\n    #if LIT_AMBIENT_SOURCE == ENVALATLAS\n\n        vec3 dir = normalize(cubeMapRotate(worldNormal) * vec3(-1.0, 1.0, 1.0));\n        vec2 uv = mapUv(toSphericalUv(dir), vec4(128.0, 256.0 + 128.0, 64.0, 32.0) / atlasSize);\n\n        vec4 raw = texture2D(texture_envAtlas, uv);\n        vec3 linear = {ambientDecode}(raw);\n        dDiffuseLight += processEnvironment(linear);\n\n    #endif\n\n    #if LIT_AMBIENT_SOURCE == CONSTANT\n\n        dDiffuseLight += light_globalAmbient;\n\n    #endif\n}\n';

export { ambientPS as default };