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
.
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
.
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/.