sdl-ios-xcode: src/video/Xext/XmuStdCmap/CmapAlloc.c annotate

annotate src/video/Xext/XmuStdCmap/CmapAlloc.c @ 4590:1ad70fb49fcb

Fix so many things that there is little place in this column to list them all but the result is that blending modes just work now for drawing primitives. Fixes involved: 1. Fix handling of alpha channel when SDL_BLENDMODE_NONE is set. 2. Make xrendercolor use floating-point values for color channels and then convert to 16 bit ints. 3. Fix handling of visuals in SDL_x11modes.c so that a 32 bit ARGB visual is used. 4. Fix the background pixel value in SDL_x11window.c so that the window background has an alpha value of 0xFF and not 0.

author	Sunny Sachanandani <sunnysachanandani@gmail.com>
date	Fri, 09 Jul 2010 21:36:41 +0530
parents	2032348afed1
children

rev	line source
2185 2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	1 /* $Xorg: CmapAlloc.c,v 1.4 2001/02/09 02:03:51 xorgcvs Exp $ */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	2
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	3 /*
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	4
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	5 Copyright 1989, 1994, 1998 The Open Group
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	6
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	7 Permission to use, copy, modify, distribute, and sell this software and its
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	8 documentation for any purpose is hereby granted without fee, provided that
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	9 the above copyright notice appear in all copies and that both that
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	10 copyright notice and this permission notice appear in supporting
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	11 documentation.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	12
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	13 The above copyright notice and this permission notice shall be included in
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	14 all copies or substantial portions of the Software.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	15
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	19 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	20 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	21 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	22
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	23 Except as contained in this notice, the name of The Open Group shall not be
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	24 used in advertising or otherwise to promote the sale, use or other dealings
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	25 in this Software without prior written authorization from The Open Group.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	26
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	27 */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	28 /* $XFree86: xc/lib/Xmu/CmapAlloc.c,v 1.6 2001/01/17 19:42:53 dawes Exp $ */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	29
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	30 /*
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	31 * Author: Donna Converse, MIT X Consortium
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	32 */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	33
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	34 #ifdef HAVE_CONFIG_H
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	35 #include <config.h>
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	36 #endif
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	37 #include <X11/Xlib.h>
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	38 #include <X11/Xatom.h>
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	39 #include <X11/Xutil.h>
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	40 #include "../extensions/StdCmap.h"
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	41 #include <stdio.h>
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	42
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	43 #define lowbit(x) ((x) & (~(x) + 1))
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	44
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	45 /*
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	46 * Prototypes
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	47 */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	48 static void best_allocation(XVisualInfo , unsigned long , unsigned long *,
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	49 unsigned long *);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	50 static int default_allocation(XVisualInfo , unsigned long ,
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	51 unsigned long , unsigned long );
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	52 static void gray_allocation(int, unsigned long , unsigned long ,
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	53 unsigned long *);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	54 static int icbrt(int);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	55 static int icbrt_with_bits(int, int);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	56 static int icbrt_with_guess(int, int);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	57
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	58 /* To determine the best allocation of reds, greens, and blues in a
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	59 * standard colormap, use XmuGetColormapAllocation.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	60 * vinfo specifies visual information for a chosen visual
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	61 * property specifies one of the standard colormap property names
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	62 * red_max returns maximum red value
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	63 * green_max returns maximum green value
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	64 * blue_max returns maximum blue value
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	65 *
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	66 * XmuGetColormapAllocation returns 0 on failure, non-zero on success.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	67 * It is assumed that the visual is appropriate for the colormap property.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	68 */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	69
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	70 Status
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	71 XmuGetColormapAllocation(XVisualInfo * vinfo, Atom property,
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	72 unsigned long *red_max,
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	73 unsigned long green_max, unsigned long blue_max)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	74 {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	75 Status status = 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	76
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	77 if (vinfo->colormap_size <= 2)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	78 return 0;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	79
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	80 switch (property) {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	81 case XA_RGB_DEFAULT_MAP:
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	82 status = default_allocation(vinfo, red_max, green_max, blue_max);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	83 break;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	84 case XA_RGB_BEST_MAP:
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	85 best_allocation(vinfo, red_max, green_max, blue_max);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	86 break;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	87 case XA_RGB_GRAY_MAP:
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	88 gray_allocation(vinfo->colormap_size, red_max, green_max, blue_max);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	89 break;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	90 case XA_RGB_RED_MAP:
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	91 *red_max = vinfo->colormap_size - 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	92 green_max = blue_max = 0;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	93 break;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	94 case XA_RGB_GREEN_MAP:
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	95 *green_max = vinfo->colormap_size - 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	96 red_max = blue_max = 0;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	97 break;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	98 case XA_RGB_BLUE_MAP:
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	99 *blue_max = vinfo->colormap_size - 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	100 red_max = green_max = 0;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	101 break;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	102 default:
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	103 status = 0;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	104 }
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	105 return status;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	106 }
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	107
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	108 /****************************************************************************/
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	109 /* Determine the appropriate color allocations of a gray scale.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	110 *
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	111 * Keith Packard, MIT X Consortium
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	112 */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	113
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	114 static void
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	115 gray_allocation(int n, unsigned long red_max, unsigned long green_max,
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	116 unsigned long *blue_max)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	117 {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	118 red_max = (n 30) / 100;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	119 green_max = (n 59) / 100;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	120 blue_max = (n 11) / 100;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	121 green_max += ((n - 1) - (red_max + green_max + blue_max));
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	122 }
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	123
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	124 /****************************************************************************/
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	125 /* Determine an appropriate color allocation for the RGB_DEFAULT_MAP.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	126 * If a map has less than a minimum number of definable entries, we do not
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	127 * produce an allocation for an RGB_DEFAULT_MAP.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	128 *
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	129 * For 16 planes, the default colormap will have 27 each RGB; for 12 planes,
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	130 * 12 each. For 8 planes, let n = the number of colormap entries, which may
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	131 * be 256 or 254. Then, maximum red value = floor(cube_root(n - 125)) - 1.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	132 * Maximum green and maximum blue values are identical to maximum red.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	133 * This leaves at least 125 cells which clients can allocate.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	134 *
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	135 * Return 0 if an allocation has been determined, non-zero otherwise.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	136 */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	137
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	138 static int
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	139 default_allocation(XVisualInfo * vinfo, unsigned long *red,
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	140 unsigned long green, unsigned long blue)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	141 {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	142 int ngrays; /* number of gray cells */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	143
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	144 switch (vinfo->class) {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	145 case PseudoColor:
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	146
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	147 if (vinfo->colormap_size > 65000)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	148 /* intended for displays with 16 planes */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	149 red = green = *blue = (unsigned long) 27;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	150 else if (vinfo->colormap_size > 4000)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	151 /* intended for displays with 12 planes */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	152 red = green = *blue = (unsigned long) 12;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	153 else if (vinfo->colormap_size < 250)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	154 return 0;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	155 else
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	156 /* intended for displays with 8 planes */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	157 red = green = *blue = (unsigned long)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	158 (icbrt(vinfo->colormap_size - 125) - 1);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	159 break;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	160
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	161 case DirectColor:
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	162
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	163 if (vinfo->colormap_size < 10)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	164 return 0;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	165 red = green = *blue = vinfo->colormap_size / 2 - 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	166 break;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	167
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	168 case TrueColor:
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	169
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	170 *red = vinfo->red_mask / lowbit(vinfo->red_mask);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	171 *green = vinfo->green_mask / lowbit(vinfo->green_mask);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	172 *blue = vinfo->blue_mask / lowbit(vinfo->blue_mask);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	173 break;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	174
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	175 case GrayScale:
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	176
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	177 if (vinfo->colormap_size > 65000)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	178 ngrays = 4096;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	179 else if (vinfo->colormap_size > 4000)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	180 ngrays = 512;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	181 else if (vinfo->colormap_size < 250)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	182 return 0;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	183 else
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	184 ngrays = 12;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	185 gray_allocation(ngrays, red, green, blue);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	186 break;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	187
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	188 default:
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	189 return 0;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	190 }
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	191 return 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	192 }
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	193
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	194 /****************************************************************************/
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	195 /* Determine an appropriate color allocation for the RGB_BEST_MAP.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	196 *
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	197 * For a DirectColor or TrueColor visual, the allocation is determined
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	198 * by the red_mask, green_mask, and blue_mask members of the visual info.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	199 *
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	200 * Otherwise, if the colormap size is an integral power of 2, determine
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	201 * the allocation according to the number of bits given to each color,
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	202 * with green getting more than red, and red more than blue, if there
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	203 * are to be inequities in the distribution. If the colormap size is
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	204 * not an integral power of 2, let n = the number of colormap entries.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	205 * Then maximum red value = floor(cube_root(n)) - 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	206 * maximum blue value = floor(cube_root(n)) - 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	207 * maximum green value = n / ((# red values) * (# blue values)) - 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	208 * Which, on a GPX, allows for 252 entries in the best map, out of 254
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	209 * defineable colormap entries.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	210 */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	211
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	212 static void
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	213 best_allocation(XVisualInfo * vinfo, unsigned long red, unsigned long green,
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	214 unsigned long *blue)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	215 {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	216
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	217 if (vinfo->class == DirectColor \|\| vinfo->class == TrueColor) {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	218 *red = vinfo->red_mask;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	219 while ((*red & 01) == 0)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	220 *red >>= 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	221 *green = vinfo->green_mask;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	222 while ((*green & 01) == 0)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	223 *green >>= 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	224 *blue = vinfo->blue_mask;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	225 while ((*blue & 01) == 0)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	226 *blue >>= 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	227 } else {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	228 register int bits, n;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	229
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	230 /* Determine n such that n is the least integral power of 2 which is
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	231 * greater than or equal to the number of entries in the colormap.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	232 */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	233 n = 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	234 bits = 0;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	235 while (vinfo->colormap_size > n) {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	236 n = n << 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	237 bits++;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	238 }
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	239
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	240 /* If the number of entries in the colormap is a power of 2, determine
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	241 * the allocation by "dealing" the bits, first to green, then red, then
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	242 * blue. If not, find the maximum integral red, green, and blue values
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	243 * which, when multiplied together, do not exceed the number of
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	244
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	245 * colormap entries.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	246 */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	247 if (n == vinfo->colormap_size) {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	248 register int r, g, b;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	249 b = bits / 3;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	250 g = b + ((bits % 3) ? 1 : 0);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	251 r = b + (((bits % 3) == 2) ? 1 : 0);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	252 *red = 1 << r;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	253 *green = 1 << g;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	254 *blue = 1 << b;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	255 } else {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	256 *red = icbrt_with_bits(vinfo->colormap_size, bits);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	257 blue = red;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	258 green = (vinfo->colormap_size / ((red) * (*blue)));
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	259 }
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	260 (*red)--;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	261 (*green)--;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	262 (*blue)--;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	263 }
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	264 return;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	265 }
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	266
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	267 /*
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	268 * integer cube roots by Newton's method
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	269 *
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	270 * Stephen Gildea, MIT X Consortium, July 1991
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	271 */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	272
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	273 static int
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	274 icbrt(int a)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	275 {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	276 register int bits = 0;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	277 register unsigned n = a;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	278
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	279 while (n) {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	280 bits++;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	281 n >>= 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	282 }
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	283 return icbrt_with_bits(a, bits);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	284 }
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	285
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	286
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	287 static int
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	288 icbrt_with_bits(int a, int bits)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	289 /* bits - log 2 of a */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	290 {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	291 return icbrt_with_guess(a, a >> 2 * bits / 3);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	292 }
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	293
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	294 #ifdef _X_ROOT_STATS
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	295 int icbrt_loopcount;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	296 #endif
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	297
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	298 /* Newton's Method: x_n+1 = x_n - ( f(x_n) / f'(x_n) ) */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	299
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	300 /* for cube roots, x^3 - a = 0, x_new = x - 1/3 (x - a/x^2) */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	301
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	302 /*
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	303 * Quick and dirty cube roots. Nothing fancy here, just Newton's method.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	304 * Only works for positive integers (since that's all we need).
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	305 * We actually return floor(cbrt(a)) because that's what we need here, too.
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	306 */
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	307
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	308 static int
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	309 icbrt_with_guess(int a, int guess)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	310 {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	311 register int delta;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	312
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	313 #ifdef _X_ROOT_STATS
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	314 icbrt_loopcount = 0;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	315 #endif
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	316 if (a <= 0)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	317 return 0;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	318 if (guess < 1)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	319 guess = 1;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	320
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	321 do {
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	322 #ifdef _X_ROOT_STATS
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	323 icbrt_loopcount++;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	324 #endif
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	325 delta = (guess - a / (guess * guess)) / 3;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	326 #ifdef DEBUG
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	327 printf("pass %d: guess=%d, delta=%d\n", icbrt_loopcount, guess,
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	328 delta);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	329 #endif
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	330 guess -= delta;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	331 } while (delta != 0);
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	332
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	333 if (guess * guess * guess > a)
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	334 guess--;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	335
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	336 return guess;
2032348afed1 This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is Bob Pendleton <bob@pendleton.com> parents: diff changeset	337 }

Mercurial > sdl-ios-xcode

annotate src/video/Xext/XmuStdCmap/CmapAlloc.c @ 4590:1ad70fb49fcb