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diff --git a/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/accum.gl b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/accum.gl deleted file mode 100644 index 5245f738b..000000000 --- a/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/accum.gl +++ /dev/null @@ -1,170 +0,0 @@ -_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(Accum,operate on the accumulation buffer) -_names(Accum) -.EQ -delim $$ -.EN -.SH PARAMETERS -_phead(_param1) -Specifies the accumulation buffer operation. -Symbolic constants -_const(ACCUM), -_const(LOAD), -_const(ADD), -_const(MULT), -and -_const(RETURN) are accepted. -_phead(_param2) -Specifies a floating-point value used in the accumulation buffer operation. -_param1 determines how _param2 is used. -.SH DESCRIPTION -The accumulation buffer is an extended-range color buffer. -Images are not rendered into it. -Rather, -images rendered into one of the color buffers -are added to the contents of the accumulation buffer after rendering. -Effects such as antialiasing (of points, lines, and polygons), -motion blur, -and depth of field can be created -by accumulating images generated with different transformation matrices. -.P -Each pixel in the accumulation buffer consists of -red, green, blue, and alpha values. -The number of bits per component in the accumulation buffer -depends on the implementation. You can examine this number -by calling _cmnd(GetIntegerv) four times, -with arguments _const(ACCUM_RED_BITS), -_const(ACCUM_GREEN_BITS), -_const(ACCUM_BLUE_BITS), -and _const(ACCUM_ALPHA_BITS). -Regardless of the number of bits per component, -the range of values stored by each component is [\-1,\ 1]. -The accumulation buffer pixels are mapped one-to-one with frame buffer pixels. -.P -_cmnd operates on the accumulation buffer. -The first argument, _param1, -is a symbolic constant that selects an accumulation buffer operation. -The second argument, _param2, -is a floating-point value to be used in that operation. -Five operations are specified: -_const(ACCUM), _const(LOAD), _const(ADD), -_const(MULT), and _const(RETURN). -.P -All accumulation buffer operations are limited -to the area of the current scissor box and applied identically to -the red, green, blue, and alpha components of each pixel. -If a _cmnd operation results in a value outside the range [\-1,\ 1], -the contents of an accumulation buffer pixel component are undefined. -.P -The operations are as follows: -.TP 14 -_const(ACCUM) -Obtains R, G, B, and A values -from the buffer currently selected for reading (see _cmnd(ReadBuffer)). -Each component value is divided by $2 sup n^-^1$, -where $n$ is the number of bits allocated to each color component -in the currently selected buffer. -The result is a floating-point value in the range [0,\ 1], -which is multiplied by _param2 and added to the corresponding pixel component -in the accumulation buffer, -thereby updating the accumulation buffer. -.TP -_const(LOAD) -Similar to _const(ACCUM), -except that the current value in the accumulation buffer is not used -in the calculation of the new value. -That is, the R, G, B, and A values from the currently selected buffer -are divided by $2 sup n^-^1$, -multiplied by _param2, -and then stored in the corresponding accumulation buffer cell, -overwriting the current value. -.TP -_const(ADD) -Adds _param2 to each R, G, B, and A -in the accumulation buffer. -.TP -_const(MULT) -Multiplies each R, G, B, and A -in the accumulation buffer by _param2 and returns the scaled component -to its corresponding accumulation buffer location. -.TP -_const(RETURN) -Transfers accumulation buffer values -to the color buffer or buffers currently selected for writing. -Each R, G, B, and A component is multiplied by _param2, -then multiplied by $2 sup n^-^1$, -clamped to the range [0,$~2 sup n^-^1 $], and stored -in the corresponding display buffer cell. -The only fragment operations that are applied to this transfer are -pixel ownership, -scissor, -dithering, -and color writemasks. -.P -To clear the accumulation buffer, call _cmnd(ClearAccum) with R, G, B, -and A values to set it to, then call _cmnd(Clear) with the -accumulation buffer enabled. -.SH NOTES -Only pixels within the current scissor box are updated by a -_cmnd operation. -.SH ERRORS -_const(INVALID_ENUM) is generated if _param1 is not an accepted value. -.P -_const(INVALID_OPERATION) is generated if there is no accumulation buffer. -.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(ACCUM_RED_BITS) -.br -_cmnd(Get) with argument _const(ACCUM_GREEN_BITS) -.br -_cmnd(Get) with argument _const(ACCUM_BLUE_BITS) -.br -_cmnd(Get) with argument _const(ACCUM_ALPHA_BITS) -.SH SEE ALSO -_cmnd(Clear), -_cmnd(ClearAccum), -_cmnd(CopyPixels), -_cmnd(DrawBuffer), -_cmnd(Get), -_cmnd(ReadBuffer), -_cmnd(ReadPixels), -_cmnd(Scissor), -_cmnd(StencilOp) |