glIsProgram

3G

glIsProgram

Determines 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`.

## Associated Gets

glGet

with the argument `GL_CURRENT_PROGRAM`

glGetActiveAttrib

with arguments `program` and the index of an active attribute variable

glGetActiveUniform

with arguments `program` and the index of an active uniform variable

glGetAttachedShaders

with argument `program`

glGetAttribLocation

with arguments `program` and the name of an attribute variable

glGetProgramiv

with arguments `program` and the parameter to be queried

glGetProgramInfoLog

with argument `program`

glGetUniform

with arguments `program` and the location of a uniform variable

glGetUniformLocation

with arguments `program` and the name of a uniform variable

## API Version Support

glIsProgram

## See Also

glAttachShader

,

glBindAttribLocation

,

glCreateProgram

,

glDeleteProgram

,

glDetachShader

,

glLinkProgram

,

glUniform

,

glUseProgram

,

glValidateProgram

## Copyright

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