NAME

       glGetUniformIndices - retrieve the index of a named uniform block

C SPECIFICATION

       void glGetUniformIndices(GLuint program, GLsizei uniformCount, const GLchar **uniformNames,
                                GLuint *uniformIndices);

PARAMETERS

       program
           Specifies the name of a program containing uniforms whose indices to query.

       uniformCount
           Specifies the number of uniforms whose indices to query.

       uniformNames
           Specifies the address of an array of pointers to buffers containing the names of the queried
           uniforms.

       uniformIndices
           Specifies the address of an array that will receive the indices of the uniforms.

DESCRIPTION

       glGetUniformIndices retrieves the indices of a number of uniforms within program.

       program must be the name of a program object for which the command glLinkProgram() must have been called
       in the past, although it is not required that glLinkProgram() must have succeeded. The link could have
       failed because the number of active uniforms exceeded the limit.

       uniformCount indicates both the number of elements in the array of names uniformNames and the number of
       indices that may be written to uniformIndices.

       uniformNames contains a list of uniformCount name strings identifying the uniform names to be queried for
       indices. For each name string in uniformNames, the index assigned to the active uniform of that name will
       be written to the corresponding element of uniformIndices. If a string in uniformNames is not the name of
       an active uniform, the special value GL_INVALID_INDEX will be written to the corresponding element of
       uniformIndices.

       If an error occurs, nothing is written to uniformIndices.

ERRORS

       GL_INVALID_OPERATION is generated if program is not the name of a program object for which
       glLinkProgram() has been called in the past.

NOTES

       glGetUniformIndices is available only if the GL version is 3.1 or greater.

VERSION SUPPORT

       ┌────────────────────┬───────────────────────────────────────────────────────────────────────┐
       │                    │                OpenGL Version                                         │
       ├────────────────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┤
       │Function            │ 2.0 │ 2.1 │ 3.0 │ 3.1 │ 3.2 │ 3.3 │ 4.0 │ 4.1 │ 4.2 │ 4.3 │ 4.4 │ 4.5 │
       │/                   │     │     │     │     │     │     │     │     │     │     │     │     │
       │Feature             │     │     │     │     │     │     │     │     │     │     │     │     │
       │Name                │     │     │     │     │     │     │     │     │     │     │     │     │
       ├────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │glGetUniformIndices │  -  │  -  │  -  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       └────────────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘

SEE ALSO

       glGetActiveUniform(), glGetActiveUniformName(), glLinkProgram()

COPYRIGHT

       Copyright © 2010-2014 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 © 2010-2014 Khronos Group

[FIXME: source]                                    01/03/2018                            GLGETUNIFORMINDICES(3G)