@luma.gl/shadertools/dist/modules/lighting/lights/lighting-uniforms-wgsl.d.ts

Shader module system for luma.gl

export declare const lightingUniformsWGSL = "// #if (defined(SHADER_TYPE_FRAGMENT) && defined(LIGHTING_FRAGMENT)) || (defined(SHADER_TYPE_VERTEX) && defined(LIGHTING_VERTEX))\nstruct AmbientLight {\n  color: vec3<f32>,\n};\n\nstruct PointLight {\n  color: vec3<f32>,\n  position: vec3<f32>,\n  attenuation: vec3<f32>, // 2nd order x:Constant-y:Linear-z:Exponential\n};\n\nstruct DirectionalLight {\n  color: vec3<f32>,\n  direction: vec3<f32>,\n};\n\nstruct lightingUniforms {\n  enabled: i32,\n  pointLightCount: i32,\n  directionalLightCount: i32,\n\n  ambientColor: vec3<f32>,\n\n  // TODO - support multiple lights by uncommenting arrays below\n  lightType: i32,\n  lightColor: vec3<f32>,\n  lightDirection: vec3<f32>,\n  lightPosition: vec3<f32>,\n  lightAttenuation: vec3<f32>,\n\n  // AmbientLight ambientLight;\n  // PointLight pointLight[MAX_LIGHTS];\n  // DirectionalLight directionalLight[MAX_LIGHTS];\n};\n\n// Binding 0:1 is reserved for lighting (Note: could go into separate bind group as it is stable across draw calls)\n@binding(1) @group(0) var<uniform> lighting : lightingUniforms;\n\nfn lighting_getPointLight(index: i32) -> PointLight {\n  return PointLight(lighting.lightColor, lighting.lightPosition, lighting.lightAttenuation);\n}\n\nfn lighting_getDirectionalLight(index: i32) -> DirectionalLight {\n  return DirectionalLight(lighting.lightColor, lighting.lightDirection);\n} \n\nfn getPointLightAttenuation(pointLight: PointLight, distance: f32) -> f32 {\n  return pointLight.attenuation.x\n       + pointLight.attenuation.y * distance\n       + pointLight.attenuation.z * distance * distance;\n}\n";
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