A native shadowmap render texture format.
This represents a format for which the GPU can automatically do shadowmap comparisons
for. Unity uses this format internally for shadows, when supported. Note that some
platforms or GPUs do not support Shadowmap format, in which case shadows
end up using RenderTextureFormat.Depth format.
Note that not all graphics cards support shadowmaps. Use SystemInfo.SupportsRenderTextureFormat
to check for support.
See Also: RenderTexture.format, RenderTexture class, SystemInfo.SupportsRenderTextureFormat.
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