glDeleteShader 3G
glDeleteShader Deletes a shader object

## C Specification

void `glDeleteShader` GLuint shader

## Parameters

shader

  Specifies the shader object to be deleted.

## Description

`glDeleteShader` frees the memory and invalidates the name associated with the shader object specified by shader. This command effectively undoes the effects of a call to glCreateShader.

If a shader object to be deleted is attached to a program object, it will be flagged for deletion, but it will not be deleted until it is no longer attached to any program object, for any rendering context (i.e., it must be detached from wherever it was attached before it will be deleted). A value of 0 for shader will be silently ignored.

To determine whether an object has been flagged for deletion, call glGetShader with arguments shader and `GL_DELETE_STATUS`.

## Notes

`glDeleteShader` is available only if the GL version is 2.0 or greater.

## Errors

`GL_INVALID_VALUE` is generated if shader is not a value generated by OpenGL.

`GL_INVALID_OPERATION` is generated if `glDeleteShader` is executed between the execution of glBegin and the corresponding execution of glEnd.

## Associated Gets

glGetAttachedShaders with the program object to be queried

glGetShader with arguments shader and `GL_DELETE_STATUS`

glIsShader

## See Also

glCreateProgram, glCreateShader, glDetachShader, glUseProgram

## Copyright

Copyright 2003-2005 3Dlabs Inc. Ltd. 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/.