sdl-ios-xcode: src/video/x11/SDL

annotate src/video/x11/SDL_x11gamma.c @ 3473:7bdc10624cba

This is terrible, but the OpenGL standard says that lines are half open, which means that one endpoint is not covered so adjoining lines don't overlap. It also doesn't define which end is open, and indeed Mac OS X and Linux differ. Mac OS X seems to leave the second endpoint open, but Linux uses the right-most endpoint for x major lines and the bottom-most endpoint for y major lines.

author	Sam Lantinga <slouken@libsdl.org>
date	Sat, 21 Nov 2009 07:14:21 +0000
parents	b7197d7e8566
children	4b594623401b

rev	line source
2162 1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	1 /*
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	2 SDL - Simple DirectMedia Layer
2859 99210400e8b9 Updated copyright date Sam Lantinga <slouken@libsdl.org> parents: 2221 diff changeset	3 Copyright (C) 1997-2009 Sam Lantinga
2162 1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	4
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	5 This library is free software; you can redistribute it and/or
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	6 modify it under the terms of the GNU Lesser General Public
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	7 License as published by the Free Software Foundation; either
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	8 version 2.1 of the License, or (at your option) any later version.
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	9
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	10 This library is distributed in the hope that it will be useful,
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	13 Lesser General Public License for more details.
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	14
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	15 You should have received a copy of the GNU Lesser General Public
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	16 License along with this library; if not, write to the Free Software
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	18
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	19 Sam Lantinga
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	20 slouken@libsdl.org
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	21 */
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	22 #include "SDL_config.h"
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	23 #include "../SDL_sysvideo.h"
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	24 #include "SDL_x11video.h"
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	25
3044 b36579172f27 Changes to hopefully handle the creation of a colormap for 8 bit PseudoColor visuals in X11 Bob Pendleton <bob@pendleton.com> parents: 3010 diff changeset	26 /* The size of all SDL gamma ramps */
b36579172f27 Changes to hopefully handle the creation of a colormap for 8 bit PseudoColor visuals in X11 Bob Pendleton <bob@pendleton.com> parents: 3010 diff changeset	27 #define SDL_GammaRampSize (3 * 256 * sizeof(Uint16))
b36579172f27 Changes to hopefully handle the creation of a colormap for 8 bit PseudoColor visuals in X11 Bob Pendleton <bob@pendleton.com> parents: 3010 diff changeset	28
2213 59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	29 static int numCmaps = 0;
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	30
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	31 typedef struct
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	32 {
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	33 Display *display;
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	34 int scrNum;
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	35 Colormap colormap;
2213 59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	36 Visual visual;
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	37 Uint16 *ramp;
2213 59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	38 } cmapTableEntry;
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	39
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	40 cmapTableEntry *cmapTable = NULL;
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	41
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	42 /* To reduce the overhead as much as possible lets do as little as
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	43 possible. When we do have to create a colormap keep track of it and
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	44 reuse it. We're going to do this for both DirectColor and
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	45 PseudoColor colormaps. */
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	46
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	47 Colormap
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	48 X11_LookupColormap(Display * display, int scrNum, VisualID vid)
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	49 {
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	50 int i;
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	51
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	52 for (i = 0; i < numCmaps; i++) {
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	53 if (cmapTable[i].display == display &&
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	54 cmapTable[i].scrNum == scrNum &&
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	55 cmapTable[i].visual.visualid == vid) {
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	56 return cmapTable[i].colormap;
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	57 }
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	58 }
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	59
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	60 return 0;
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	61 }
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	62
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	63
2213 59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	64 void
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	65 X11_TrackColormap(Display * display, int scrNum, Colormap colormap,
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	66 Visual * visual, XColor * ramp)
2213 59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	67 {
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	68 int i;
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	69 Uint16 *newramp;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	70 int ncolors;
2213 59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	71
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	72 /* search the table to find out if we already have this one. We
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	73 only want one entry for each display, screen number, visualid,
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	74 and colormap combination */
2213 59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	75 for (i = 0; i < numCmaps; i++) {
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	76 if (cmapTable[i].display == display &&
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	77 cmapTable[i].scrNum == scrNum &&
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	78 cmapTable[i].visual.visualid == visual->visualid &&
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	79 cmapTable[i].colormap == colormap) {
2213 59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	80 return;
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	81 }
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	82 }
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	83
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	84 /* increase the table by one entry. If the table is NULL create the
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	85 first entrty */
2221 1d75c38e1e5c indent Sam Lantinga <slouken@libsdl.org> parents: 2216 diff changeset	86 cmapTable =
1d75c38e1e5c indent Sam Lantinga <slouken@libsdl.org> parents: 2216 diff changeset	87 SDL_realloc(cmapTable, (numCmaps + 1) * sizeof(cmapTableEntry));
2216 82a133b784c9 changed to use SDL_realloc() Bob Pendleton <bob@pendleton.com> parents: 2214 diff changeset	88 if (NULL == cmapTable) {
2213 59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	89 SDL_SetError("Out of memory in X11_TrackColormap()");
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	90 return;
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	91 }
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	92
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	93 cmapTable[numCmaps].display = display;
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	94 cmapTable[numCmaps].scrNum = scrNum;
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	95 cmapTable[numCmaps].colormap = colormap;
2213 59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	96 SDL_memcpy(&cmapTable[numCmaps].visual, visual, sizeof(Visual));
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	97 cmapTable[numCmaps].ramp = NULL;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	98
3044 b36579172f27 Changes to hopefully handle the creation of a colormap for 8 bit PseudoColor visuals in X11 Bob Pendleton <bob@pendleton.com> parents: 3010 diff changeset	99 if (ramp != NULL) {
3052 b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	100 newramp = SDL_malloc(SDL_GammaRampSize);
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	101 if (NULL == newramp) {
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	102 SDL_SetError("Out of memory in X11_TrackColormap()");
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	103 return;
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	104 }
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	105 SDL_memset(newramp, 0, SDL_GammaRampSize);
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	106 cmapTable[numCmaps].ramp = newramp;
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	107
3052 b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	108 ncolors = cmapTable[numCmaps].visual.map_entries;
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	109
3052 b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	110 for (i = 0; i < ncolors; i++) {
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	111 newramp[(0 * 256) + i] = ramp[i].red;
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	112 newramp[(1 * 256) + i] = ramp[i].green;
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	113 newramp[(2 * 256) + i] = ramp[i].blue;
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	114 }
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	115 }
2213 59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	116
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	117 numCmaps++;
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	118 }
59a667370c57 make indent Bob Pendleton <bob@pendleton.com> parents: 2211 diff changeset	119
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	120 /* The problem is that you have to have at least one DirectColor
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	121 colormap before you can set the gamma ramps or read the gamma
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	122 ramps. If the application has created a DirectColor window then the
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	123 cmapTable will have at least one colormap in it and everything is
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	124 cool. If not, then we just fail */
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	125
2162 1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	126 int
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	127 X11_SetDisplayGammaRamp(_THIS, Uint16 * ramp)
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	128 {
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	129 Visual *visual;
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	130 Display *display;
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	131 Colormap colormap;
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	132 XColor *colorcells;
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	133 int ncolors;
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	134 int rmask, gmask, bmask;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	135 int rshift, gshift, bshift;
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	136 int i;
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	137 int j;
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	138
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	139 for (j = 0; j < numCmaps; j++) {
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	140 if (cmapTable[j].visual.class == DirectColor) {
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	141 display = cmapTable[j].display;
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	142 colormap = cmapTable[j].colormap;
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	143 ncolors = cmapTable[j].visual.map_entries;
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	144 visual = &cmapTable[j].visual;
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	145
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	146 colorcells = SDL_malloc(ncolors * sizeof(XColor));
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	147 if (NULL == colorcells) {
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	148 SDL_SetError("out of memory in X11_SetDisplayGammaRamp");
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	149 return -1;
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	150 }
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	151 /* remember the new ramp */
3052 b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	152 if (cmapTable[j].ramp == NULL) {
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	153 Uint16 *newramp = SDL_malloc(SDL_GammaRampSize);
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	154 if (NULL == newramp) {
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	155 SDL_SetError("Out of memory in X11_TrackColormap()");
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	156 return -1;
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	157 }
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	158 cmapTable[j].ramp = newramp;
b7197d7e8566 indent Sam Lantinga <slouken@libsdl.org> parents: 3044 diff changeset	159 }
3044 b36579172f27 Changes to hopefully handle the creation of a colormap for 8 bit PseudoColor visuals in X11 Bob Pendleton <bob@pendleton.com> parents: 3010 diff changeset	160 SDL_memcpy(cmapTable[j].ramp, ramp, SDL_GammaRampSize);
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	161
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	162 rshift = 0;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	163 rmask = visual->red_mask;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	164 while (0 == (rmask & 1)) {
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	165 rshift++;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	166 rmask >>= 1;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	167 }
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	168
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	169 /* printf("rmask = %4x rshift = %4d\n", rmask, rshift); */
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	170
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	171 gshift = 0;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	172 gmask = visual->green_mask;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	173 while (0 == (gmask & 1)) {
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	174 gshift++;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	175 gmask >>= 1;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	176 }
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	177
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	178 /* printf("gmask = %4x gshift = %4d\n", gmask, gshift); */
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	179
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	180 bshift = 0;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	181 bmask = visual->blue_mask;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	182 while (0 == (bmask & 1)) {
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	183 bshift++;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	184 bmask >>= 1;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	185 }
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	186
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	187 /* printf("bmask = %4x bshift = %4d\n", bmask, bshift); */
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	188
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	189 /* build the color table pixel values */
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	190 for (i = 0; i < ncolors; i++) {
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	191 Uint32 rbits = (rmask * i) / (ncolors - 1);
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	192 Uint32 gbits = (gmask * i) / (ncolors - 1);
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	193 Uint32 bbits = (bmask * i) / (ncolors - 1);
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	194
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	195 Uint32 pix =
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	196 (rbits << rshift) \| (gbits << gshift) \| (bbits << bshift);
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	197
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	198 colorcells[i].pixel = pix;
a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	199
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	200 colorcells[i].flags = DoRed \| DoGreen \| DoBlue;
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	201
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	202 colorcells[i].red = ramp[(0 * 256) + i];
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	203 colorcells[i].green = ramp[(1 * 256) + i];
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	204 colorcells[i].blue = ramp[(2 * 256) + i];
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	205 }
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	206
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	207 XStoreColors(display, colormap, colorcells, ncolors);
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	208 XFlush(display);
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	209 SDL_free(colorcells);
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	210 }
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	211 }
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	212
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	213 return 0;
2162 1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	214 }
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	215
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	216 int
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	217 X11_GetDisplayGammaRamp(_THIS, Uint16 * ramp)
1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	218 {
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	219 int i;
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	220
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	221 /* find the first DirectColor colormap and use it to get the gamma
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	222 ramp */
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	223
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	224 for (i = 0; i < numCmaps; i++) {
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	225 if (cmapTable[i].visual.class == DirectColor) {
3044 b36579172f27 Changes to hopefully handle the creation of a colormap for 8 bit PseudoColor visuals in X11 Bob Pendleton <bob@pendleton.com> parents: 3010 diff changeset	226 SDL_memcpy(ramp, cmapTable[i].ramp, SDL_GammaRampSize);
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	227 return 0;
2214 e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	228 }
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	229 }
e7164a4dac62 Added gamma table support to X11. Also now supports DirectColor visuals. Bob Pendleton <bob@pendleton.com> parents: 2213 diff changeset	230
3010 a6694a812119 Modified and totally untested code to load the color tables for DirectColor and PseudoColor windows. Bob Pendleton <bob@pendleton.com> parents: 2859 diff changeset	231 return -1;
2162 1d23870d8c49 Added stubs for x11 gamma functions and enabled them in SDL_x11video.c Bob Pendleton <bob@pendleton.com> parents: diff changeset	232 }

Mercurial > sdl-ios-xcode

annotate src/video/x11/SDL_x11gamma.c @ 3473:7bdc10624cba