GLAPI/glGetFragDataLocation

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glGetFragDataLocation
Core in version 4.4
Core since version 3.0

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

Function Definition

 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

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.

See Also

glLinkProgram, glBindFragDataLocation, glBindFragDataLocationIndexed, glGetFragDataIndex, glGetProgramResource, glGetProgramResourceLocation

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/.