glGetUniformIndices man page on Darwin
[printable version]
GLGETUNIFORMINDICES(3G) OpenGL 3.3 GLGETUNIFORMINDICES(3G)
NAME
glGetUniformIndices - retrieve the index of a named uniform block
C SPECIFICATION
GLuint 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.
SEE ALSO
glGetActiveUniform(), glGetActiveUniformName(), glLinkProgram()
COPYRIGHT
Copyright © 2010 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/.
OpenGL 3.3 03/08/2011 GLGETUNIFORMINDICES(3G)
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