Invert the clearcoat gloss channel.
The set of defines used to generate the shader.
If UV1 (second set of texture coordinates) is required in the shader. Will be declared as "vUv1" and passed to the fragment shader.
Invert the gloss channel.
Defines if StandardMaterial#gloss constant should affect glossiness value.
Storage for the options for lit the shader and material.
Defines if StandardMaterial#metalness constant should affect metalness value.
If normal map contains X in RGB, Y in Alpha, and Z must be reconstructed.
Invert the sheen gloss channel.
Defines if StandardMaterial#specular constant should affect specular color.
True to include AO variables even if AO is not used, which allows SSAO to be used in the lit shader.
The standard material options define a set of options used to control the shader frontend shader generation, such as textures, tints and multipliers.