glGetUniformIndices — retrieve the index of a named uniform block
|const GLchar **uniformNames,|
Specifies the name of a program containing uniforms whose indices to query.
Specifies the number of uniforms whose indices to query.
Specifies the address of an array of pointers to buffers containing the names of the queried uniforms.
Specifies the address of an array that will receive the indices of the uniforms.
glGetUniformIndices retrieves the indices of a number of uniforms within
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
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
If an error occurs, nothing is written to
GL_INVALID_OPERATION is generated if
program is not the name of a program object for which
glLinkProgram has been called in the past.
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. https://opencontent.org/openpub/.