2010 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.

## See Also

glGenProgramPipelines, glDeleteProgramPipelines, glIsProgramPipeline, glUseProgram, glUniform

## 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/.