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author | Reinhard Tartler <siretart@tauware.de> | 2011-10-10 17:43:39 +0200 |
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committer | Reinhard Tartler <siretart@tauware.de> | 2011-10-10 17:43:39 +0200 |
commit | f4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch) | |
tree | 2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/drawbuffer.gl | |
parent | a840692edc9c6d19cd7c057f68e39c7d95eb767d (diff) | |
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Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz
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Imported nx-X11-3.1.0-1.tar.gz
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Diffstat (limited to 'nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/drawbuffer.gl')
-rw-r--r-- | nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/drawbuffer.gl | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/drawbuffer.gl b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/drawbuffer.gl new file mode 100644 index 000000000..52699d73e --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/drawbuffer.gl @@ -0,0 +1,158 @@ +_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,tbl|eqn)_C_ +_C_ eqn is automatically replaced with neqn for nroff +_header(DrawBuffer,specify which color buffers are to be drawn into) +_names(DrawBuffer) +.EQ +delim $$ +.EN +.SH PARAMETERS +_phead(_param1) +Specifies up to four color buffers to be drawn into. +Symbolic constants +_const(NONE), +_const(FRONT_LEFT), +_const(FRONT_RIGHT), +_const(BACK_LEFT), +_const(BACK_RIGHT), +_const(FRONT), +_const(BACK), +_const(LEFT), +_const(RIGHT), +_const(FRONT_AND_BACK), and +_const(AUX)\f2i\fP, +where \f2i\fP is between 0 and +.br +``_const(AUX_BUFFERS)'' \-1, +are accepted (_const(AUX_BUFFERS) is not the upper limit; use _cmnd(Get) +to query the number of available aux buffers.) +The initial value is _const(FRONT) for single-buffered contexts, +and _const(BACK) for double-buffered contexts. +.SH DESCRIPTION +When colors are written to the frame buffer, +they are written into the color buffers specified by _cmnd. +The specifications are as follows: +.TP 25 +_const(NONE) +No color buffers are written. +.TP +_const(FRONT_LEFT) +Only the front left color buffer is written. +.TP +_const(FRONT_RIGHT) +Only the front right color buffer is written. +.TP +_const(BACK_LEFT) +Only the back left color buffer is written. +.TP +_const(BACK_RIGHT) +Only the back right color buffer is written. +.TP +_const(FRONT) +Only the front left and front right color buffers are written. +If there is no front right color buffer, +only the front left color buffer is written. +.TP +_const(BACK) +Only the back left and back right color buffers are written. +If there is no back right color buffer, +only the back left color buffer is written. +.TP +_const(LEFT) +Only the front left and back left color buffers are written. +If there is no back left color buffer, +only the front left color buffer is written. +.TP +_const(RIGHT) +Only the front right and back right color buffers are written. +If there is no back right color buffer, +only the front right color buffer is written. +.BP +.TP +_const(FRONT_AND_BACK) +All the front and back color buffers +(front left, front right, back left, back right) +are written. +If there are no back color buffers, +only the front left and front right color buffers are written. +If there are no right color buffers, +only the front left and back left color buffers are written. +If there are no right or back color buffers, +only the front left color buffer is written. +.TP +_const(AUX)\f2i\fP +Only auxiliary color buffer \f2i\fP is written. +.P +If more than one color buffer is selected for drawing, +then blending or logical operations are computed and applied independently +for each color buffer and can produce different results in each buffer. +.P +Monoscopic contexts include only +.I left +buffers, and stereoscopic contexts include both +.I left +and +.I right +buffers. +Likewise, single-buffered contexts include only +.I front +buffers, and double-buffered contexts include both +.I front +and +.I back +buffers. +The context is selected at GL initialization. +.SH NOTES +It is always the case that _const(AUX)$i$ = _const(AUX0) + $i$. +.SH ERRORS +_const(INVALID_ENUM) is generated if _param1 is not an accepted value. +.P +_const(INVALID_OPERATION) is generated if none of the buffers indicated +by _param1 exists. +.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(DRAW_BUFFER) +.br +_cmnd(Get) with argument _const(AUX_BUFFERS) +.SH SEE ALSO +_cmnd(BlendFunc), +_cmnd(ColorMask), +_cmnd(IndexMask), +_cmnd(LogicOp), +_cmnd(ReadBuffer) |