Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
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1 files changed, 246 insertions, 0 deletions

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+_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)_C_
+_header(ConvolutionFilter2D,define a two-dimensional convolution filter)
+_names(ConvolutionFilter2D)
+_define(@<__target>@,@<_param1>@)_C_
+_define(@<__internalformat>@,@<_param2>@)_C_
+_define(@<__width>@,@<_param3>@)_C_
+_define(@<__height>@,@<_param4>@)_C_
+_define(@<__format>@,@<_param5>@)_C_
+_define(@<__type>@,@<_param6>@)_C_
+_define(@<__image>@,@<_param7>@)_C_
+.SH PARAMETERS
+_phead(__target)
+Must be _const(CONVOLUTION_2D).
+_phead(__internalformat)
+The internal format of the convolution filter kernel.
+The allowable values are
+_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(R3_G3_B2),
+_const(RGB),
+_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(__width)
+The width of the pixel array referenced by __image.
+_phead(__height)
+The height of the pixel array referenced by __image.
+_phead(__format)
+The format of the pixel data in __image.
+The allowable values are
+_const(RED),
+_const(GREEN),
+_const(BLUE),
+_const(ALPHA),
+_const(RGB),
+_const(BGR),
+_const(RGBA),
+_const(BGRA),
+_const(LUMINANCE), and
+_const(LUMINANCE_ALPHA).
+_phead(__type)
+The type of the pixel data in __image.
+Symbolic constants
+_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), and
+_const(UNSIGNED_INT_2_10_10_10_REV)
+are accepted.
+_phead(__image)
+Pointer to a two-dimensional array of pixel data that is processed to
+build the convolution filter kernel.
+.SH DESCRIPTION
+_cmnd builds a two-dimensional convolution filter kernel from an array of
+pixels.
+.sp
+The pixel array specified by __width, __height, __format, __type, and
+__image is extracted from memory and processed just as if
+_cmnd(DrawPixels) were called, but processing stops after the final
+expansion to RGBA is completed.
+.sp
+The R, G, B, and A components of each pixel are next scaled by the four
+2D _const(CONVOLUTION_FILTER_SCALE) parameters and biased by the
+four 2D _const(CONVOLUTION_FILTER_BIAS) parameters.
+(The scale and bias parameters are set by _cmnd(ConvolutionParameter)
+using the _const(CONVOLUTION_2D) target and the names
+_const(CONVOLUTION_FILTER_SCALE) and _const(CONVOLUTION_FILTER_BIAS).
+The parameters themselves are vectors of four values that are applied to red,
+green, blue, and alpha, in that order.)
+The R, G, B, and A values are not clamped to [0,1] at any time during this
+process.
+.sp
+Each pixel is then converted to the internal format specified by
+__internalformat.
+This conversion simply maps the component values of the pixel (R, G, B,
+and A) to the values included in the internal format (red, green, blue,
+alpha, luminance, and intensity).  The mapping is as follows:
+.sp
+.TS
+center;
+lb cb cb cb cb cb cb
+l c c c c c c.
+_
+Internal Format	Red	Green	Blue	Alpha	Luminance	Intensity
+_
+_const(ALPHA)				A
+_const(LUMINANCE)				R
+_const(LUMINANCE_ALPHA)			A	R
+_const(INTENSITY)						R
+_const(RGB)	R	G	B
+_const(RGBA)	R	G	B	A
+_
+.TE
+.sp
+The red, green, blue, alpha, luminance, and/or intensity components of
+the resulting pixels are stored in floating-point rather than integer
+format.
+They form a two-dimensional filter kernel image indexed with coordinates
+\f2i\fP and \f2j\fP such that \f2i\fP starts at zero and increases from left
+to right, and \f2j\fP starts at zero and increases from bottom to top.
+Kernel location \f2i,j\fP is derived from the \f2N\fPth pixel,
+where \f2N\fP is \f2i\fP+\f2j\fP*__width.
+.PP
+Note that after a convolution is performed, the resulting color
+components are also scaled by their corresponding
+_const(POST_CONVOLUTION_c_SCALE) parameters and biased by their
+corresponding _const(POST_CONVOLUTION_c_BIAS) parameters (where
+\f2c\fP takes on the values \f3RED\fP, \f3GREEN\fP, \f3BLUE\fP, and
+\f3ALPHA\fP).
+These parameters are set by _cmnd(PixelTransfer).
+.SH NOTES
+_cmnd is present only if _arbstring(imaging) is returned when _cmnd(GetString)
+is called with an argument of _const(EXTENSIONS).
+.SH ERRORS
+_const(INVALID_ENUM) is generated if __target is not
+_const(CONVOLUTION_2D).
+.P
+_const(INVALID_ENUM) is generated if __internalformat is not one of the
+allowable values.
+.P
+_const(INVALID_VALUE) is generated if __width is less than zero or greater
+than the maximum supported value.
+This value may be queried with _cmnd(GetConvolutionParameter)
+using target _const(CONVOLUTION_2D) and name
+_const(MAX_CONVOLUTION_WIDTH).
+.P
+_const(INVALID_VALUE) is generated if __height is less than zero or greater
+than the maximum supported value.
+This value may be queried with _cmnd(GetConvolutionParameter)
+using target _const(CONVOLUTION_2D) and name
+_const(MAX_CONVOLUTION_HEIGHT).
+.P
+_const(INVALID_ENUM) is generated if __format is not one of the allowable
+values.
+.P
+_const(INVALID_ENUM) is generated if __type is not one of the allowable
+values.
+.P
+_const(INVALID_OPERATION) is generated if _cmnd is executed
+between the execution of _cmnd(Begin) and the corresponding
+execution of _cmnd(End).
+.P
+_const(INVALID_OPERATION) is generated if _param4 is one of
+_const(UNSIGNED_BYTE_3_3_2),
+_const(UNSIGNED_BYTE_2_3_3_REV),
+_const(UNSIGNED_SHORT_5_6_5), or
+_const(UNSIGNED_SHORT_5_6_5_REV)
+and _param5 is not _const(RGB).
+.P
+_const(INVALID_OPERATION) is generated if _param4 is one of
+_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)
+and _param5 is neither _const(RGBA) nor _const(BGRA).
+.SH ASSOCIATED GETS
+_cmnd(GetConvolutionParameter), _cmnd(GetConvolutionFilter)
+.SH SEE ALSO
+_cmnd(ConvolutionFilter1D),
+_cmnd(SeparableFilter2D),
+_cmnd(ConvolutionParameter),
+_cmnd(PixelTransfer)