Name

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

glIsShader is available only if the GL version is 2.0 or greater.

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.

Errors

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

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. 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/.