fglgetstring man page on IRIX

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fglGetString(3G)	       OpenGL Reference		      fglGetString(3G)

NAME
     fglGetString - return a string describing the current GL connection

FORTRAN SPECIFICATION
     CHARACTER*256  fglGetString( INTEGER*4 name )

PARAMETERS
     name  Specifies a symbolic constant, one of GL_VENDOR, GL_RENDERER,
	   GL_VERSION, or GL_EXTENSIONS.

DESCRIPTION
     fglGetString 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.  For Silicon Graphics the string
			 is "SGI".

     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.  The renderer strings for Silicon
			 Graphics graphic engines are listed in the MACHINE
			 DEPENDENCIES section below.

     GL_VERSION		 Returns a version or release number.  For SGI
			 releases prior to Irix 5.3 the string is "1.0".  For
			 Irix 5.3 and subsequent releases the format is
			 "<GL version> Irix <release number> patch <patch number>";
			 for example in the Irix 5.3 release the string is
			 "1.0 Irix 5.3".  Beginning with Irix 6.5, the GL
			 version number may be 1.1 or 1.2, depending on the
			 particular graphics hardware.

     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.)

									Page 1

fglGetString(3G)	       OpenGL Reference		      fglGetString(3G)

     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
     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, fglGetString returns 0.

     The client and server may support different versions or extensions.
     fglGetString 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 fglGetString is executed between the
     execution of fglBegin and the corresponding execution of fglEnd.

MACHINE DEPENDENCIES
     The GL_RENDERER strings returned by fglGetString for each graphics system
     are listed below.	Square brackets ([,]) surround optional parts of the
     string, and angle brackets (<,>) surround multi-valued parts that are
     always present. Neither the square brackets nor the angle brackets are
     part of the string.

     Indy and XL: "NEWPORT <nplanes>", where nplanes is the number of
	  configured bitplanes: 8 or 24.

     Personal Iris: "GR1.<version>[/24][/Z][/Turbo]", where version is the
	  board version: 1 or 2; /24 indicates 24 bitplanes (otherwise 8); /Z
	  indicates a hardware depth buffer; /Turbo indicates the "Turbo"
	  option.

     VGX and VGXT: "VGX[T][<spans>]", where spans is either /5 or /10
	  indicating the number of spans other than 20.

     Indigo Entry: "LIGHT".

     O2: "CRIME".

     XS, XZ, Elan, and Extreme: "<type>-<graphics>", where type is one of
	  GR2, GR3, GU1 or GR2MP and graphics is one of XS, XSM, XS24, XS24-Z,
	  XZ, Elan, or Extreme, corresponding to the configuration of the
	  graphics board.

									Page 2

fglGetString(3G)	       OpenGL Reference		      fglGetString(3G)

     RealityEngine, RealityEngine2, and VTX: "<type>/<pixd>/<nrm>/<texsz>",
	  where type is REC, RE, REV, RET, or RES, corresponding to Crimson,
	  Power Series, Onyx/VTX with R4400, PowerOnyx with R8000, or
	  Onyx/PowerOnyx with R10000; pixd is S, M, or L, corresponding to
	  small, medium, or large pixel depth, respectively; nrm is 1, 2, or
	  4, indicating the number of raster manager boards; texsz is 2 or 8
	  indicating the size of the texture memory in megatexels.  (Each
	  texel is 16 bits in size.)

     Solid Impact, High Impact and Maximum Impact: "IMPACT/<nge>/<nrss>/<texsz>",
	  where nge is 1 or 2, corresponding to the number of GEs; nrss is 1
	  or 2, corresponding to the number of raster subsystem boards; and
	  texsz is 0, 1 or 4, corresponding to the size of texture memory in
	  megabytes.

     InfiniteReality: "<type>/<pixd>/<nrm>/<texsz>/<nge>",
	  where type is IR or IRS, corresponding to Onyx with R4400 or R10000,
	  respectively; pixd is S, M, L, or X, corresponding to small, medium,
	  large, or extra large pixel depth, respectively; nrm is 1, 2, or 4,
	  indicating the number of raster manager boards; texsz is 16 or 64
	  indicating the size of texture memory in megabytes; and nge
	  indicates the number of Geometry Engines on the geometry engine
	  board.

     Octane2 VPro: "VPRO/<rev>/<memsz>",
	  where rev is the hardware revision letter, and memsz is the amount
	  of unified graphics memory in megabytes.

									Page 3

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