glIsProgram

3G

glIsProgram

determine if a name corresponds to a program object

# C Specification

    		GLboolean glIsProgram
    		GLuint program

## Parameters

`program`

- Specifies a potential program object.

## Description

`glIsProgram` returns `GL_TRUE` if `program` is the name of a program object previously created with

glCreateProgram

and not yet deleted with

glDeleteProgram

. If `program` is zero or a non-zero value that is not the name of a program object, or if an error occurs, `glIsProgram` returns `GL_FALSE`.

## Notes

No error is generated if `program` is not a valid program object name.

A program object marked for deletion with

glDeleteProgram

but still in use as part of current rendering state is still considered a program object and `glIsProgram` will return `GL_TRUE`.

## See Also

glCreateProgram

,

glDeleteProgram

,

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/.