Index for Section 3G

Alphabetical listing for G

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glGetString(3G)
NAME
  glGetString - return a string describing the current GL connection

SYNOPSIS
  const GLubyte * glGetString(
	  GLenum name );

PARAMETERS
  name
      Specifies a symbolic constant, one of GL_VENDOR, GL_RENDERER,
      GL_VERSION, 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 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_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
  characteristics 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
  standard 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  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 or extensions.
  glGetString() 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().

Index for Section 3G

Alphabetical listing for G

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