2010-2014
Khronos Group
glActiveShaderProgram
3G

# glActiveShaderProgram

set the active program object for a program pipeline object

## C Specification

                    void glActiveShaderProgram
                    GLuint pipeline
                    GLuint program

## Parameters

`pipeline`

  Specifies the program pipeline object to set the active program object for.

`program`

  Specifies the program object to set as the active program pipeline object `pipeline`.

## Description

`glActiveShaderProgram` sets the linked program named by `program` to be the active program for the program pipeline object `pipeline`. The active program in the active program pipeline object is the target of calls to glUniform when no program has been made current through a call to glUseProgram.

## Errors

`GL_INVALID_OPERATION` is generated if `pipeline` is not a name previously returned from a call to glGenProgramPipelines or if such a name has been deleted by a call to glDeleteProgramPipelines.

`GL_INVALID_OPERATION` is generated if `program` refers to a program object that has not been successfully linked.

## API Version Support

`glActiveShaderProgram`

## See Also

glGenProgramPipelines, glDeleteProgramPipelines, glIsProgramPipeline, glUseProgram, glUniform

## Copyright

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/.