glGetFragDataLocation : PyOpenGL 3.1.4 GL Man Pages

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

Signature

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

glGetFragDataLocation( 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 binding to query

Description

glGetFragDataLocation retrieves the assigned color number binding for the user-defined varying out variable name for program program . program must have previously been linked. name must be a null-terminated string. If name is not the name of an active user-defined varying out fragment shader variable within program , -1 will be returned.

Errors

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

Version Support

glGetFragDataLocation

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/