glIsProgram — determine if a name corresponds to a program object
GLboolean glIsProgram( | GLuint program); |
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.
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.
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. https://opencontent.org/openpub/.