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