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Spherical harmonics up to the second order (3 bands, 9 coefficients).
Spherical harmonics (SH) represent a function or signal over directions, and are commonly used in computer graphics to efficiently evaluate smooth lighting. Unity uses them for LightProbes and environment lighting.
L2 spherical harmonics is composed of 9 coefficients for each color channel.
See Also: RenderSettings.ambientMode, RenderSettings.ambientProbe, LightProbes.
|this[int,int]||Access individual SH coefficients.|
|AddAmbientLight||Add ambient lighting to probe data.|
|AddDirectionalLight||Add directional light to probe data.|
|Clear||Clears SH probe to zero.|
|Evaluate||Evaluates the Spherical Harmonics for each of the given directions. The result from the first direction is written into the first element of results, the result from the second direction is written into the second element of results, and so on. The array size of directions and results must match and directions must be normalized.|
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