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

C Specification[edit]

GLint glGetFragDataLocation( GLuint program, const char * name );


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


 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.


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

Version Support[edit]

 glGetFragDataLocation  3.0+

See Also[edit]

 glCreateProgram , glBindFragDataLocation 


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.