glGetFragDataIndex : PyOpenGL 3.1.4 GL Man Pages

query the bindings of color indices to user-defined varying out variables

Signature

glGetFragDataIndex( GLuint ( program ) , const char * ( name ) )-> GLint

glGetFragDataIndex( program , name ) -> <class 'ctypes.c_int'>

Parameters

Variables	Description
program	The name of the program containing varying out variable whose binding to query
name	The name of the user-defined varying out variable whose index to query

Description

glGetFragDataIndex returns the index of the fragment color to which the variable name was bound when the program object program was last linked. If name is not a varying out variable of program , or if an error occurs, -1 will be returned.

Notes

glGetFragDataIndex is available only if the GL version is 3.3 or greater.

Errors

GL_INVALID_OPERATION is generated if program is not the name of a program object.

Version Support

glGetFragDataIndex

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/