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diff --git a/nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/build2dmipmaps.gl b/nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/build2dmipmaps.gl deleted file mode 100644 index c20b52636..000000000 --- a/nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/build2dmipmaps.gl +++ /dev/null @@ -1,242 +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_ $Date: 2004/03/14 08:29:09 $ $Revision: 1.1.1.4 $ -_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(Build2DMipmaps, builds a two-dimensional mipmap) -_names(Build2DMipmaps) -.EQ -delim $$ -.EN -.SH PARAMETERS -_phead(_param1) -Specifies the target texture. Must be _const(TEXTURE_2D). -_phead(_param2) -Requests the internal storage format of the texture image. The most -current version of the SGI implementation of GLU does not check this -value for validity before passing it on to the underlying OpenGL -implementation. A value that is not accepted by the OpenGL -implementation will lead to an OpenGL error. The benefit of not -checking this value at the GLU level is that OpenGL extensions can add -new internal texture formats without requiring a revision of the GLU -implementation. Older implementations of GLU check this value and -raise a GLU error if it is not 1, 2, 3, or 4 or one of the following -symbolic constants: -_const(ALPHA), -_const(ALPHA4), -_const(ALPHA8), -_const(ALPHA12), -_const(ALPHA16), -_const(LUMINANCE), -_const(LUMINANCE4), -_const(LUMINANCE8), -_const(LUMINANCE12), -_const(LUMINANCE16), -_const(LUMINANCE_ALPHA), -_const(LUMINANCE4_ALPHA4), -_const(LUMINANCE6_ALPHA2), -_const(LUMINANCE8_ALPHA8), -_const(LUMINANCE12_ALPHA4), -_const(LUMINANCE12_ALPHA12), -_const(LUMINANCE16_ALPHA16), -_const(INTENSITY), -_const(INTENSITY4), -_const(INTENSITY8), -_const(INTENSITY12), -_const(INTENSITY16), -_const(RGB), -_const(R3_G3_B2), -_const(RGB4), -_const(RGB5), -_const(RGB8), -_const(RGB10), -_const(RGB12), -_const(RGB16), -_const(RGBA), -_const(RGBA2), -_const(RGBA4), -_const(RGB5_A1), -_const(RGBA8), -_const(RGB10_A2), -_const(RGBA12) or -_const(RGBA16). -_phead(_param3 _param4) -Specifies in pixels the width and height, respectively, of the texture image. -_phead(_param5) -Specifies the format of the pixel data. -Must be one of -_const(COLOR_INDEX), -_const(DEPTH_COMPONENT), -_const(RED), -_const(GREEN), -_const(BLUE), -_const(ALPHA), -_const(RGB), -_const(RGBA), -_const(BGR), -_const(BGRA), -_const(LUMINANCE), or -_const(LUMINANCE_ALPHA). -_phead(_param6) -Specifies the data type for _param7. -Must be one of -_const(UNSIGNED_BYTE), -_const(BYTE), -_const(BITMAP), -_const(UNSIGNED_SHORT), -_const(SHORT), -_const(UNSIGNED_INT), -_const(INT), -_const(FLOAT), -_const(UNSIGNED_BYTE_3_3_2), -_const(UNSIGNED_BYTE_2_3_3_REV), -_const(UNSIGNED_SHORT_5_6_5), -_const(UNSIGNED_SHORT_5_6_5_REV), -_const(UNSIGNED_SHORT_4_4_4_4), -_const(UNSIGNED_SHORT_4_4_4_4_REV), -_const(UNSIGNED_SHORT_5_5_5_1), -_const(UNSIGNED_SHORT_1_5_5_5_REV), -_const(UNSIGNED_INT_8_8_8_8), -_const(UNSIGNED_INT_8_8_8_8_REV), -_const(UNSIGNED_INT_10_10_10_2), or -_const(UNSIGNED_INT_2_10_10_10_REV). -_phead(_param7) -Specifies a pointer to the image data in memory. - - -.SH DESCRIPTION -_cmnd builds a series of prefiltered two-dimensional texture maps of decreasing -resolutions called a mipmap. This is used for the antialiasing of -texture-mapped primitives. -.P -A return value of zero indicates success, otherwise a GLU error code is -returned (see _cmnd(ErrorString)). -.P -Initially, the _param3 and _param4 of _param7 are checked to see if they -are a power of 2. If not, a copy of _param7 (not _param7), is scaled up -or down to the nearest power of 2. This copy will be used for subsequent -mipmapping operations described below. (If _param3 or _param4 is exactly -between powers of 2, then the copy of _param7 will scale upwards.) For -example, if _param3 is 57 and _param4 is 23 then a copy of _param7 will -scale up to 64 in _param3 and down to 16 in depth, before mipmapping takes -place. -.P -Then, proxy textures (see _glcmnd(TexImage2D)) are used to determine if -the implementation can fit the requested texture. If not, both dimensions -are continually halved until it fits. (If the OpenGL version is \(<= 1.0, -both maximum texture dimensions are clamped to the value returned -by _glcmnd(GetIntegerv) with the argument _const(MAX_TEXTURE_SIZE).) -.P -Next, a series of mipmap levels is built by decimating a copy of _param7 -in half along both dimensions until size $1 ~times~ 1$ is reached. At -each level, -each texel in the halved mipmap level is an average of the corresponding -four texels in the larger mipmap level. (In the case of rectangular -images, the decimation will ultimately reach an $N ~times~ 1$ or -$1 ~times~ N$ configuration. Here, two texels are averaged instead.) -.P -_glcmnd(TexImage2D) is called to load each of these mipmap levels. -Level 0 is a copy of _param7. The highest level is -${log sub 2} ( max (_eqnparam3,_eqnparam4))$. For example, -if _param3 is 64 and _param4 is 16 -and the implementation can store a texture of this size, the following -mipmap levels are built: $64 ~times~ 16$, $32 ~times~ 8$, $16 ~times~ 4$, -$8 ~times~ 2$, $4 ~times~ 1$, $2 ~times~ 1$ and $1 ~times~ 1$. These correspond to -levels 0 through 6, respectively. -.P -See the _glcmnd(TexImage1D) reference page for a description of the -acceptable values for _param5 parameter. See the _glcmnd(DrawPixels) -reference page for a description of the acceptable values -for _param6 parameter. -.SH NOTES - -Note that there is no direct way of querying the maximum level. This can -be derived indirectly via _glcmnd(GetTexLevelParameter). First, query -for the width and height actually used at level 0. (The width and -height may not be equal to _param3 and _param4 respectively since proxy -textures might have scaled them to fit the implementation.) Then the -maximum level can be derived from the formula -${log sub 2}( max (_param3,_param4))$. -.SH NOTES -Formats _const(BGR), and _const(BGRA), and types -_const(UNSIGNED_BYTE_3_3_2), -_const(UNSIGNED_BYTE_2_3_3_REV), -_const(UNSIGNED_SHORT_5_6_5), -_const(UNSIGNED_SHORT_5_6_5_REV), -_const(UNSIGNED_SHORT_4_4_4_4), -_const(UNSIGNED_SHORT_4_4_4_4_REV), -_const(UNSIGNED_SHORT_5_5_5_1), -_const(UNSIGNED_SHORT_1_5_5_5_REV), -_const(UNSIGNED_INT_8_8_8_8), -_const(UNSIGNED_INT_8_8_8_8_REV), -_const(UNSIGNED_INT_10_10_10_2), and -_const(UNSIGNED_INT_2_10_10_10_REV) are only available if the GL version -is 1.2 or greater and if the GLU version is 1.3 or greater. -.SH ERRORS -_gluconst(INVALID_VALUE) is returned if _param3, or _param4 is < 1. -.P -_gluconst(INVALID_ENUM) is returned if _param2, _param5, or _param6 is not -legal. -.P -_gluconst(INVALID_OPERATION) is returned if _param6 is _const(UNSIGNED_BYTE_3_3_2) or _const(UNSIGNED_BYTE_2_3_3_REV) -and _param5 is not _const(RGB). -.P -_gluconst(INVALID_OPERATION) is returned if _param6 is _const(UNSIGNED_SHORT_5_6_5) or _const(UNSIGNED_SHORT_5_6_5_REV) -and _param5 is not _const(RGB). -.P -_gluconst(INVALID_OPERATION) is returned if _param6 is _const(UNSIGNED_SHORT_4_4_4_4) or _const(UNSIGNED_SHORT_4_4_4_4_REV) -and _param5 is neither _const(RGBA) nor _const(BGRA). -.P -_gluconst(INVALID_OPERATION) is returned if _param6 is _const(UNSIGNED_SHORT_5_5_5_1) or _const(UNSIGNED_SHORT_1_5_5_5_REV) -and _param5 is neither _const(RGBA) nor _const(BGRA). -.P -_gluconst(INVALID_OPERATION) is returned if _param6 is _const(UNSIGNED_INT_8_8_8_8) or _const(UNSIGNED_INT_8_8_8_8_REV) -and _param5 is neither _const(RGBA) nor _const(BGRA). -.P -_gluconst(INVALID_OPERATION) is returned if _param6 is _const(UNSIGNED_INT_10_10_10_2) or _const(UNSIGNED_INT_2_10_10_10_REV) -and _param5 is neither _const(RGBA) nor _const(BGRA). -.SH SEE ALSO -_glcmnd(DrawPixels), -_glcmnd(TexImage1D), -_glcmnd(TexImage2D), -_glcmnd(TexImage3D), -_cmnd(Build1DMipmaps), -_cmnd(Build3DMipmaps), -_cmnd(ErrorString), -_glcmnd(GetTexImage), -_glcmnd(GetTexLevelParameter), -_cmnd(Build1DMipmapLevels), -_cmnd(Build2DMipmapLevels), -_cmnd(Build3DMipmapLevels) |