glGetFragDataLocation.3G man page

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

C Specification

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

Parameters

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

glCreateProgram(), glBindFragDataLocation()

Info

02/04/2016 [FIXME: source] [FIXME: manual]