glGetString - return a string describing the current GL connection
const GLubyte* glGetString(GLenum name);
const GLubyte* glGetStringi(GLenum name, GLuint index);
glGetString returns a pointer to a static string describing some aspect of the current GL connection. name 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 platform. It does not change from release to release.
Returns a version or release number.
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:
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:
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.
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.
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.
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