glIsShader

3G

glIsShader

Determines if a name corresponds to a shader object

# C Specification

            GLboolean glIsShader
            GLuint shader

## Parameters

`shader`

- Specifies a potential shader object.

## Description

`glIsShader` returns `GL_TRUE` if `shader` is the name of a shader object previously created with

glCreateShader

and not yet deleted with

glDeleteShader

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

## Notes

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

A shader object marked for deletion with

glDeleteShader

but still attached to a program object is still considered a shader object and `glIsShader` will return `GL_TRUE`.

## Associated Gets

glGetAttachedShaders

with a valid program object

glGetShader

with arguments `shader` and a parameter to be queried

glGetShaderInfoLog

with argument `object`

glGetShaderSource

with argument `object`

## See Also

glAttachShader

,

glCompileShader

,

glCreateShader

,

glDeleteShader

,

glDetachShader

,

glLinkProgram

,

glShaderSource

## Copyright

Copyright 2003-2005 3Dlabs Inc. Ltd. Copyright 2010-2013 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/.