Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 97 insertions, 0 deletions

diff --git a/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/polygonstipple.gl b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/polygonstipple.gl
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+_C_ License Applicability. Except to the extent portions of this file are
+_C_ made subject to an alternative license as permitted in the SGI Free
+_C_ Software License B, Version 1.1 (the "License"), the contents of this
+_C_ file are subject only to the provisions of the License. You may not use
+_C_ this file except in compliance with the License. You may obtain a copy
+_C_ of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
+_C_ Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
+_C_ 
+_C_ http://oss.sgi.com/projects/FreeB
+_C_ 
+_C_ Note that, as provided in the License, the Software is distributed on an
+_C_ "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
+_C_ DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
+_C_ CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
+_C_ PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+_C_ 
+_C_ Original Code. The Original Code is: OpenGL Sample Implementation,
+_C_ Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
+_C_ Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
+_C_ Copyright in any portions created by third parties is as indicated
+_C_ elsewhere herein. All Rights Reserved.
+_C_ 
+_C_ Additional Notice Provisions: The application programming interfaces
+_C_ established by SGI in conjunction with the Original Code are The
+_C_ OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
+_C_ April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
+_C_ 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
+_C_ Window System(R) (Version 1.3), released October 19, 1998. This software
+_C_ was created using the OpenGL(R) version 1.2.1 Sample Implementation
+_C_ published by SGI, but has not been independently verified as being
+_C_ compliant with the OpenGL(R) version 1.2.1 Specification.
+_C_
+_C_ The first character in this file must be an '_'!
+_C_ Anything on a line after _C_ is ignored
+_define(_filters,eqn)_C_
+_C_      eqn is automatically replaced with neqn for nroff
+_header(PolygonStipple,set the polygon stippling pattern)
+_names(PolygonStipple)
+.EQ
+delim $$
+.EN
+.SH PARAMETERS
+_phead(_param1)
+Specifies a pointer to a $32 ~times~ 32$ stipple pattern that will be unpacked
+from memory in the same way that _cmnd(DrawPixels) unpacks pixels.
+.SH DESCRIPTION
+Polygon stippling,
+like line stippling
+(see _cmnd(LineStipple)),
+masks out certain fragments produced by rasterization,
+creating a pattern.
+Stippling is independent of polygon antialiasing.
+.P
+_param1 is a pointer to a $32 ~times~ 32$ stipple pattern that is stored
+in memory just like the pixel data supplied to a _cmnd(DrawPixels)
+call with 
+.I
+height
+and
+.I width
+both equal to 32, a pixel format
+of _const(COLOR_INDEX), and data type 
+of _const(BITMAP).
+That is,
+the stipple pattern is represented as a $32 ~times~ 32$ array
+of 1-bit color indices packed in unsigned bytes.
+_cmnd(PixelStore) parameters like _const(UNPACK_SWAP_BYTES)
+and _const(UNPACK_LSB_FIRST) affect the assembling of the bits into a
+stipple pattern.
+Pixel transfer operations
+(shift, offset, pixel map)
+are not applied to the stipple image,
+however.
+.P
+To enable and disable polygon stippling, call
+_cmnd(Enable) and _cmnd(Disable)
+with argument _const(POLYGON_STIPPLE). Polygon stippling is initially
+disabled. If it's enabled,
+a rasterized polygon fragment with window coordinates $x sub w$ and $y sub w$
+is sent to the next stage of the GL if and only if the
+($x sub w~roman mod~32$)th bit in the ($y sub w~roman mod~32$)th row
+of the stipple pattern is 1 (one).
+When polygon stippling is disabled, it is as if the stipple pattern
+consists of all 1's.
+.SH ERRORS
+_const(INVALID_OPERATION) is generated if _cmnd
+is executed between the execution of _cmnd(Begin)
+and the corresponding execution of _cmnd(End).
+.SH ASSOCIATED GETS
+_cmnd(GetPolygonStipple)
+.br
+_cmnd(IsEnabled) with argument _const(POLYGON_STIPPLE)
+.SH SEE ALSO
+_cmnd(DrawPixels),
+_cmnd(LineStipple),
+_cmnd(PixelStore),
+_cmnd(PixelTransfer)