GLGETSTRING() GLGETSTRING() NAME glGetString - return a string describing the current GL connection C SPECIFICATION const GLubyte * glGetString( GLenum name ) PARAMETERS name Specifies a symbolic constant, one of GL_VENDOR, GL_RENDERER, GL_VER- SION, or GL_EXTENSIONS. 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 implementa- tion. This name does not change from release to re- lease. GL_RENDERER Returns the name of the renderer. This name is typi- cally specific to a particular configuration of a hard- ware platform. It does not change from release to re- lease. GL_VERSION Returns a version or release number. GL_EXTENSIONS 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 characteris- tics of these platforms. 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. 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 stan- dard GL. The GL_EXTENSIONS string is a space-separated list of supported GL extensions. (Extension names never contain a space character.) The GL_VERSION string begins 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 de- pends on the implementation, but a space always separates the version num- ber 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 or extensions. glGet- String always returns a compatible version number or list of extensions. The release number always describes the server. ERRORS GL_INVALID_ENUM is generated if name is not an accepted value. GL_INVALID_OPERATION is generated if glGetString is executed between the execution of glBegin and the corresponding execution of glEnd. GLGETSTRING()
NAME | C SPECIFICATION | PARAMETERS | DESCRIPTION | NOTES | ERRORS
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