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diff --git a/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/polygonmode.gl b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/polygonmode.gl new file mode 100644 index 000000000..2a54f5d98 --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/polygonmode.gl @@ -0,0 +1,117 @@ +_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(PolygonMode,select a polygon rasterization mode) +_names(PolygonMode) +.SH PARAMETERS +_phead(_param1) +Specifies the polygons that _param2 applies to. +Must be +_const(FRONT) for front-facing polygons, +_const(BACK) for back-facing polygons, +or _const(FRONT_AND_BACK) for front- and back-facing polygons. +_phead(_param2) +Specifies how polygons will be rasterized. +Accepted values are +_const(POINT), +_const(LINE), and +_const(FILL). +The initial value is _const(FILL) for both front- and back-facing polygons. +.SH DESCRIPTION +_cmnd controls the interpretation of polygons for rasterization. +_param1 describes which polygons _param2 applies to: +front-facing polygons (_const(FRONT)), +back-facing polygons (_const(BACK)), +or both (_const(FRONT_AND_BACK)). +The polygon mode affects only the final rasterization of polygons. +In particular, +a polygon's vertices are lit and +the polygon is clipped and possibly culled before these modes are applied. +.P +Three modes are defined and can be specified in _param2: +.TP 14 +_const(POINT) +Polygon vertices that are marked as the start of a boundary edge +are drawn as points. +Point attributes such as +_const(POINT_SIZE) and +_const(POINT_SMOOTH) control +the rasterization of the points. +Polygon rasterization attributes other than _const(POLYGON_MODE) have no effect. +.TP +_const(LINE) +Boundary edges of the polygon are drawn as line segments. +They are treated as connected line segments for line stippling; +the line stipple counter and pattern are not reset between segments +(see _cmnd(LineStipple)). +Line attributes such as +_const(LINE_WIDTH) and +_const(LINE_SMOOTH) control +the rasterization of the lines. +Polygon rasterization attributes other than _const(POLYGON_MODE) have no effect. +.TP +_const(FILL) +The interior of the polygon is filled. +Polygon attributes such as +_const(POLYGON_STIPPLE) and +_const(POLYGON_SMOOTH) control the rasterization of the polygon. +.SH EXAMPLES +To draw a surface with filled back-facing polygons +and outlined front-facing polygons, +call +.Ex 1 +glPolygonMode(_const(FRONT), _const(LINE)); +.Ee +.SH NOTES +Vertices are marked as boundary or nonboundary with an edge flag. +Edge flags are generated internally by the GL when it decomposes +polygons; they can be set explicitly using _cmnd(EdgeFlag). +.SH ERRORS +_const(INVALID_ENUM) is generated if either _param1 or _param2 is not +an accepted value. +.P +_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(Get) with argument _const(POLYGON_MODE) +.SH SEE ALSO +_cmnd(Begin), +_cmnd(EdgeFlag), +_cmnd(LineStipple), +_cmnd(LineWidth), +_cmnd(PointSize), +_cmnd(PolygonStipple) |