Provided by: opengl-4-man-doc_1.0~svn31251-1build1_all bug

NAME
       gl_PatchVerticesIn - contains the number of vertices in the current patch


DECLARATION
       in int gl_PatchVerticesIn ;.SH "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
       ┌───────────────────┬───────────────────────────────────────────────────────────────────────────────────┐
       │                   │        OpenGL Shading Language Version                                            │
       ├───────────────────┼──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┤
       │Variable           │ 1.10 │ 1.20 │ 1.30 │ 1.40 │ 1.50 │ 3.30 │ 4.00 │ 4.10 │ 4.20 │ 4.30 │ 4.40 │ 4.50 │
       │Name               │      │      │      │      │      │      │      │      │      │      │      │      │
       ├───────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │gl_PatchVerticesIn │  -   │  -   │  -   │  -   │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       └───────────────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┘


SEE ALSO
       gl_TessLevelOuter(), gl_TessLevelInner(), gl_TessCoord()


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.
       http://opencontent.org/openpub/.


COPYRIGHT
       Copyright © 2011-2014 Khronos Group

[FIXME: source]                             07/22/2015                     GL_PATCHVERTICESIN(3G)