Signature
Parameters
| Variables | Description |
|---|---|
| name |
Specifies a symbolic constant, one of
GL_VENDOR
,
GL_RENDERER
,
GL_VERSION
, or
GL_SHADING_LANGUAGE_VERSION
.
Additionally,
glGetStringi
accepts the
GL_EXTENSIONS
token.
|
| index |
For
glGetStringi
, specifies the index of the string to return.
|
Description
glGetString
returns a pointer to a static string
describing some aspect of the current GL connection.
name
can be one of the following:
- GL_VENDOR
-
Returns the company responsible for this GL implementation. This name does not change from release to release.
- GL_RENDERER
-
Returns the name of the renderer. This name is typically specific to a particular configuration of a hardware platform. It does not change from release to release.
- GL_VERSION
-
Returns a version or release number.
- GL_SHADING_LANGUAGE_VERSION
-
Returns a version or release number for the shading language.
glGetStringi
returns a pointer to a static string
indexed by
index
.
name
can be one of the following:
- GL_EXTENSIONS
-
For glGetStringi only, returns the extension string supported by the implementation at index .
Strings
GL_VENDOR
and
GL_RENDERER
together uniquely specify
a platform. They do not change from release to release and should be used
by platform-recognition algorithms.
The
GL_VERSION
and
GL_SHADING_LANGUAGE_VERSION
strings begin with a version number.
The version number uses one
of these forms:
major_number.minor_number
major_number.minor_number.release_number
Vendor-specific information may follow the version
number. Its format depends on the implementation, but
a space always separates the version number and
the vendor-specific information.
All strings are null-terminated.
Notes
If an error is generated,
glGetString
returns 0.
The client and server may support different versions.
glGetString
always returns a compatible version number.
The release number always describes the server.
Errors
GL_INVALID_ENUM
is generated if
name
is not an accepted value.
GL_INVALID_VALUE
is generated by
glGetStringi
if
index
is outside the valid range for indexed state
name
.
Version Support
| glGetString | |
| glGetStringi |
See Also
Copyright
Copyright
1991-2006 Silicon Graphics, Inc.
Copyright
2010-2014 Khronos Group.
This document is licensed under the SGI
Free Software B License. For details, see
http://oss.sgi.com/projects/FreeB/
.
Sample Code References
The following code samples have been found which appear to reference the functions described here. Take care that the code may be old, broken or not even use PyOpenGL.
glGetString