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Contains the computed sample coverage mask for the current fragment.



gl_SampleMaskInis a fragment language that indicates the set of samples covered by the primitive generating the fragment during multisample rasterization. It has a sample bit set if and only if the sample is considered covered for this fragment shader invocation. BitBof maskgl_SampleMask[M]corresponds to sample 32 *M+B. The array has ceil (s/ 32) elements wheresis the maximum number of color samples supported by the implementation.

Version Support[edit]

gl_SampleMaskIn 4.0+

See Also[edit]

 gl_SampleMask , gl_SampleID , gl_SamplePosition , gl_FragCoord 


Copyright© 2011-2014 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999.