gl_PatchVerticesIn

contains the number of vertices in the current patch

Signature

gl_PatchVerticesIn( )->

Description

Available only in the tessellation control and evaluation languages,
gl_PatchVerticesIn
contains the number of vertices in the input being processed by the shader. A single tessellation control or evaluation shader can read patches of differing sizes, and so th value of
gl_PatchVertexIn
may differ between patches.

Version Support

gl_PatchVerticesIn

See Also

Copyright

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. .