From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Mon, 10 Oct 2011 17:43:39 +0200 Subject: Imported nx-X11-3.1.0-1.tar.gz Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository --- .../main/doc/man/mangl/standard/polygonstipple.gl | 97 ++++++++++++++++++++++ 1 file changed, 97 insertions(+) create mode 100644 nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/polygonstipple.gl (limited to 'nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/polygonstipple.gl') 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 new file mode 100644 index 000000000..d63cd4b53 --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/polygonstipple.gl @@ -0,0 +1,97 @@ +_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) -- cgit v1.2.3