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modelMaterial.glsl
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modelMaterial.glsl
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/**
* Struct for representing a material for a {@link Model}. The model
* rendering pipeline will pass this struct between material, custom shaders,
* and lighting stages. This is not to be confused with {@link czm_material}
* which is used by the older Fabric materials system, although they are similar.
* <p>
* All color values (diffuse, specular, emissive) are in linear color space.
* </p>
*
* @name czm_modelMaterial
* @glslStruct
*
* @property {vec3} diffuse Incoming light that scatters evenly in all directions.
* @property {float} alpha Alpha of this material. 0.0 is completely transparent; 1.0 is completely opaque.
* @property {vec3} specular Color of reflected light at normal incidence in PBR materials. This is sometimes referred to as f0 in the literature.
* @property {float} roughness A number from 0.0 to 1.0 representing how rough the surface is. Values near 0.0 produce glossy surfaces, while values near 1.0 produce rough surfaces.
* @property {vec3} normalEC Surface's normal in eye coordinates. It is used for effects such as normal mapping. The default is the surface's unmodified normal.
* @property {float} occlusion Ambient occlusion recieved at this point on the material. 1.0 means fully lit, 0.0 means fully occluded.
* @property {vec3} emissive Light emitted by the material equally in all directions. The default is vec3(0.0), which emits no light.
*/
struct czm_modelMaterial {
vec3 diffuse;
float alpha;
vec3 specular;
float roughness;
vec3 normalEC;
float occlusion;
vec3 emissive;
};