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/scissor.gl | 81 ++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/scissor.gl (limited to 'nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/scissor.gl') diff --git a/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/scissor.gl b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/scissor.gl new file mode 100644 index 000000000..2665ff5ac --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/scissor.gl @@ -0,0 +1,81 @@ +_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(Scissor, define the scissor box) +_names(Scissor) +.SH PARAMETERS +_phead(_param1 _param2) +Specify the lower left corner of the scissor box. +Initially (0, 0). +_phead(_param3 _param4) +Specify the width and height of the scissor box. +When a GL context is first attached to a window, +_param3 and _param4 are set to the dimensions of that window. +.SH DESCRIPTION +_cmnd defines a rectangle, called the scissor box, +in window coordinates. +The first two arguments, +_param1 and _param2, +specify the lower left corner of the box. +_param3 and _param4 specify the width and height of the box. +.P +To enable and disable the scissor test, call +_cmnd(Enable) and _cmnd(Disable) with argument +_const(SCISSOR_TEST). The test is initially disabled. +While the test is enabled, only pixels that lie within the scissor box +can be modified by drawing commands. +Window coordinates have integer values at the shared corners of +frame buffer pixels. +\f7glScissor(0,0,1,1)\fP allows modification of only the lower left +pixel in the window, and \f7glScissor(0,0,0,0)\fP doesn't allow +modification of any pixels in the window. +.P +When the scissor test is disabled, +it is as though the scissor box includes the entire window. +.SH ERRORS +_const(INVALID_VALUE) is generated if either _param3 or _param4 is negative. +.P +_const(INVALID_OPERATION) is generated if _cmnd +is executed between the execution of _cmnd(Begin) +and the corresponding execution of _cmnd(End). +.bp +.SH ASSOCIATED GETS +_cmnd(Get) with argument _const(SCISSOR_BOX) +.br +_cmnd(IsEnabled) with argument _const(SCISSOR_TEST) +.SH SEE ALSO +_cmnd(Enable), +_cmnd(Viewport) -- cgit v1.2.3