glIsProgram — Determines 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.
glIsProgram is available only if the
GL version is 2.0 or greater.
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.
GL_INVALID_OPERATION is generated if
glIsProgram is executed between the
execution of
glBegin
and the corresponding execution of
glEnd.
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
glGetProgram
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
glAttachShader, glBindAttribLocation, glCreateProgram, glDeleteProgram, glDetachShader, glLinkProgram, glUniform, glUseProgram, glValidateProgram
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/.
