Constant DEPTH_TEXTURE_SAMPLING_SUPPORTED

pub const DEPTH_TEXTURE_SAMPLING_SUPPORTED: bool = true;

True if multisampled depth textures are supported on this platform.

In theory, Naga supports depth textures on WebGL 2. In practice, it doesn’t, because of a silly bug whereby Naga assumes that all depth textures are sampler2DShadow and will cheerfully generate invalid GLSL that tries to perform non-percentage-closer-filtering with such a sampler. Therefore we disable depth of field and screen space reflections entirely on WebGL 2.