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diff --git a/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/color.gl b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/color.gl new file mode 100644 index 000000000..b5e93b83e --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/color.gl @@ -0,0 +1,103 @@ +_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(Color, set the current color) +_names(Color,[34]u*[bsifd]) +.EQ +delim $$ +.EN +.SH PARAMETERS +_phead(_param1 _param2 _param3) +Specify new red, green, and blue values for the current color. +_phead(_param4) +Specifies a new alpha value for the current color. +Included only in the four-argument _cmnd(Color4) commands. +_names(Color,[34]u*[bsifd]v) +.SH PARAMETERS +_phead(_param1) +Specifies a pointer to an array that contains red, green, blue, +and (sometimes) alpha values. +.SH DESCRIPTION +The GL stores both a current single-valued color index +and a current four-valued RGBA color. +_cmnd sets a new four-valued RGBA color. +_cmnd has two major variants: +_cmnd(Color3) and _cmnd(Color4). +_cmnd(Color3) variants specify new red, +green, +and blue values explicitly +and set the current alpha value to 1.0 (full intensity) implicitly. +_cmnd(Color4) variants specify all four color components explicitly. +.P +_cmnd(Color3b), _cmnd(Color4b), +_cmnd(Color3s), _cmnd(Color4s), _cmnd(Color3i), and _cmnd(Color4i) take +three or four signed byte, short, or long integers as arguments. +When \f3v\fP is appended to the name, +the color commands can take a pointer to an array of such values. +.P +Current color values are stored in floating-point format, +with unspecified mantissa and exponent sizes. +Unsigned integer color components, +when specified, +are linearly mapped to floating-point values such that the largest +representable value maps to 1.0 (full intensity), +and 0 maps to 0.0 (zero intensity). +Signed integer color components, +when specified, +are linearly mapped to floating-point values such that the most positive +representable value maps to 1.0, +and the most negative representable value maps to \-1.0. (Note that +this mapping does not convert 0 precisely to 0.0.) +Floating-point values are mapped directly. +.P +Neither floating-point nor signed integer values are clamped +to the range [0,1] before the current color is updated. +However, +color components are clamped to this range before they are interpolated +or written into a color buffer. +.SH NOTES +The initial value for the current color is (1, 1, 1, 1). +.P +The current color can be updated at any time. +In particular, +_cmnd can be called between a call to _cmnd(Begin) and the corresponding +call to _cmnd(End). +.SH ASSOCIATED GETS +_cmnd(Get) with argument _const(CURRENT_COLOR) +.br +_cmnd(Get) with argument _const(RGBA_MODE) +.SH SEE ALSO +_cmnd(Index) |