Manpage of GLGETSTRING
- return a string describing the current GL connection
const GLubyte* f3glGetStringfP(
GLenum fInamefP )
Specifies a symbolic constant, one of
%f3GL_VENDORfP, %f3GL_RENDERERfP, %f3GL_VERSIONfP, or %f3GL_EXTENSIONSfP.
%f3glGetStringfP returns a pointer to a static string
describing some aspect of the current GL connection.
f2namefP can be one of the following:
Returns the company responsible for this GL implementation.
This name does not change from release to release.
Returns the name of the renderer.
This name is typically specific to a particular configuration of a hardware
It does not change from release to release.
Returns a version or release number.
Returns a space-separated list of supported extensions to GL.
Because the GL does not include queries for the performance
characteristics of an implementation, some applications are written to
recognize known platforms and modify their GL usage based on known
performance characteristics of these platforms.
Strings %f3GL_VENDORfP and %f3GL_RENDERERfP together uniquely specify
a platform. They do not change from release to release and should be used
by platform-recognition algorithms.
Some applications want to make use of features that
are not part of the standard GL. These features
may be implemented as extensions to the standard GL.
The %f3GL_EXTENSIONSfP string is a space-separated
list of supported GL extensions.
(Extension names never contain a space character.)
The %f3GL_VERSIONfP string begins with a version number.
The version number uses one
of these forms:
Vendor-specific information may follow the version
number. Its depends on the implementation, but
a space always separates the version number and
the vendor-specific information.
All strings are null-terminated.
If an error is generated, %f3glGetStringfP returns 0.
The client and server may support different versions or extensions.
%f3glGetStringfP always returns a compatible version number or list of extensions.
The release number always describes the server.
%f3GL_INVALID_ENUMfP is generated if f2namefP is not an accepted value.
%f3GL_INVALID_OPERATIONfP is generated if %f3glGetStringfP
is executed between the execution of %f3glBeginfP
and the corresponding execution of %f3glEndfP.
- C SPECIFICATION