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diff --git a/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/blendequation.gl b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/blendequation.gl deleted file mode 100644 index f3c49cda3..000000000 --- a/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/blendequation.gl +++ /dev/null @@ -1,163 +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(BlendEquation, set the blend equation) -_names(BlendEquation) -.EQ -delim $$ -.EN -.SH PARAMETERS -_phead(_param1) -specifies how source and destination colors are combined. -It must be _const(FUNC_ADD), _const(FUNC_SUBTRACT), -_const(FUNC_REVERSE_SUBTRACT), _const(MIN), _const(MAX). - -.SH DESCRIPTION -The blend equation determines how a new pixel (the ``source'' color) -is combined with a pixel already in the framebuffer (the ``destination'' -color). -.TP -_const(MIN) -sets the blend equation so that each component of the result color -is the minimum of the corresponding components of the source and destination -colors. -.TP -_const(MAX) -sets the blend equation so that each component of the result color -is the maximum of the corresponding components of the source and destination -colors. -.P -The remaining blend equations use the source and destination blend factors -specified by _cmnd(BlendFunc). -See _cmnd(BlendFunc) for a description of the various blend factors. -.P -In the equations that follow, source and destination -color components are referred to as -$(R sub s, G sub s, B sub s, A sub s )$ -and -$(R sub d, G sub d, B sub d, A sub d )$, -respectively. -The result color is referred to as -$(R sub r, G sub r, B sub r, A sub r )$. -The source and destination blend factors are denoted -$(s sub R, s sub G, s sub B, s sub A )$ and -$(d sub R, d sub G, d sub B, d sub A )$, respectively. -For these equations all color components are understood to have values -in the range [0,\ 1]. -.TP -_const(FUNC_ADD) -sets the blend equation so that the source and destination -data are added. -Each component of the source color is -multiplied by the corresponding source factor, then -each component of the destination color is multiplied -by the corresponding destination factor. -The result is the componentwise sum of the two products, clamped to the -range [0,\ 1]. -.P -.RS -.nf -.IP -$Rr ~=~ mark min (1, ~R sub s~s sub R ~+~ R sub d~d sub R )$ -$Gr ~=~ lineup min (1, ~G sub s~s sub G ~+~ G sub d~d sub G )$ -$Br ~=~ lineup min (1, ~B sub s~s sub B ~+~ B sub d~d sub B )$ -$Ar ~=~ lineup min (1, ~A sub s~s sub A ~+~ A sub d~d sub A )$ -.fi -.RE -.TP -_const(FUNC_SUBTRACT) -Is like _const(FUNC_ADD) except the product of the destination factor and -the destination color is componentwise subtracted from the product of the -source factor and the source color. -The result is clamped to the range [0,\ 1]. -.RS -.nf -.IP -$Rr ~=~ mark max (0 , ~R sub s~s sub R ~-~ R sub d~d sub R )$ -$Gr ~=~ lineup max (0 , ~G sub s~s sub G ~-~ G sub d~d sub G )$ -$Br ~=~ lineup max (0 , ~B sub s~s sub B ~-~ B sub d~d sub B )$ -$Ar ~=~ lineup max (0 , ~A sub s~s sub A ~-~ A sub d~d sub A )$ -.fi -.RE -.TP -_const(FUNC_REVERSE_SUBTRACT) -Is like _const(FUNC_ADD) except the product of the source factor and the -source color is componentwise subtracted from the product of the destination -factor and the destination color. -The result is clamped to the range [0,\ 1]. -.RS -.nf -.IP -$Rr ~=~ mark max (0 , ~R sub d~d sub R ~-~ R sub s~s sub R )$ -$Gr ~=~ lineup max (0 , ~G sub d~d sub G ~-~ G sub s~s sub G )$ -$Br ~=~ lineup max (0 , ~B sub d~d sub B ~-~ B sub s~s sub B )$ -$Ar ~=~ lineup max (0 , ~A sub d~d sub A ~-~ A sub s~s sub A )$ -.fi -.RE -.P -The _const(MIN) and _const(MAX) equations are useful for applications -that analyze -.br -image data (image thresholding against a constant color, -for example). -The _const(FUNC_ADD) equation is useful -for antialiasing and transparency, among other things. -.P -Initially, the blend equation is set to _const(FUNC_ADD). -.P -.SH NOTES -_cmnd is part of the _arbstring(imaging) subset. _cmnd is present only -if _arbstring(imaging) is returned when _cmnd(GetString) is called with -_const(EXTENSIONS) as its argument. -.P -The _const(MIN), and _const(MAX) equations do not use -the source or destination factors, only the source and destination colors. -.P -.SH ERRORS -_const(INVALID_ENUM) is generated if _param1 is not one of -_const(FUNC_ADD), _const(FUNC_SUBTRACT), _const(FUNC_REVERSE_SUBTRACT), -_const(MAX), or _const(MIN). -.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 -.TP -_cmnd(Get) with an argument of _const(BLEND_EQUATION) -.SH SEE ALSO -_cmnd(GetString), -_cmnd(BlendColor), -_cmnd(BlendFunc) |