GLISSHADER(3G)

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/.