diff options
Diffstat (limited to 'nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/readbuffer.gl')
| -rw-r--r-- | nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/readbuffer.gl | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/readbuffer.gl b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/readbuffer.gl new file mode 100644 index 000000000..4d65606fc --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/readbuffer.gl @@ -0,0 +1,98 @@ +_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(ReadBuffer,select a color buffer source for pixels) +_names(ReadBuffer) +.SH PARAMETERS +_phead(_param1) +Specifies a color buffer. +Accepted values are +_const(FRONT_LEFT), +_const(FRONT_RIGHT), +_const(BACK_LEFT), +_const(BACK_RIGHT), +_const(FRONT), +_const(BACK), +_const(LEFT), +_const(RIGHT), and +_const(AUX)\f2i\fP, +where \f2i\fP is between 0 and _const(AUX_BUFFERS) \-1. +.SH DESCRIPTION +_cmnd specifies a color buffer as the source for subsequent +_cmnd(ReadPixels), _cmnd(CopyTexImage1D), _cmnd(CopyTexImage2D), +_cmnd(CopyTexSubImage1D), _cmnd(CopyTexSubImage2D), +_cmnd(CopyTexSubImage3D), and +_cmnd(CopyPixels) commands. +_param1 accepts one of twelve or more predefined values. +(_const(AUX0) through _const(AUX3) are always defined.) +In a fully configured system, +_const(FRONT), +_const(LEFT), and +_const(FRONT_LEFT) all name the front left buffer, +_const(FRONT_RIGHT) and +_const(RIGHT) name the front right buffer, and +_const(BACK_LEFT) and +_const(BACK) name the back left buffer. +.P +Nonstereo double-buffered configurations have only a front left and a +back left buffer. +Single-buffered configurations have a front left and a front right +buffer if stereo, and only a front left buffer if nonstereo. +It is an error to specify a nonexistent buffer to _cmnd. +.P +_param1 is initially _const(FRONT) in single-buffered configurations, +and _const(BACK) in double-buffered configurations. +.SH ERRORS +_const(INVALID_ENUM) is generated if _param1 is not one of the twelve +(or more) accepted values. +.P +_const(INVALID_OPERATION) is generated if _param1 specifies a buffer +that does not exist. +.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(READ_BUFFER) +.SH SEE ALSO +_cmnd(CopyPixels), +_cmnd(CopyTexImage1D), +_cmnd(CopyTexImage2D), +_cmnd(CopyTexSubImage1D), +_cmnd(CopyTexSubImage2D), +_cmnd(CopyTexSubImage3D), +_cmnd(DrawBuffer), +_cmnd(ReadPixels) |