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annotate src/video/xbios/SDL_xbios_centscreen.c @ 1643:51038e80ae59

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More general fix for bug #189 The clipping is done at a higher level, and the low level functions are passed clipped rectangles. Drivers which don't support source clipping have not been changed, so the image will be squished instead of clipped, but at least they will no longer crash when the destination rect was out of bounds.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 17 Apr 2006 06:47:23 +0000
parents d910939febfa
children 782fd950bd46 c121d94672cb 568c9b3c0167
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /*
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25 Centscreen extension definitions
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26
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27 Patrice Mandin
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28 */
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29
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30 #include <mint/falcon.h>
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31
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32 #include "SDL_xbios.h"
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33 #include "SDL_xbios_centscreen.h"
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34
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35 int SDL_XBIOS_CentscreenInit(_THIS)
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36 {
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37 centscreen_mode_t curmode, listedmode;
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38 unsigned long result;
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39 int cur_handle; /* Current Centscreen mode handle */
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40
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41 /* Reset current mode list */
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42 if (XBIOS_modelist) {
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43 SDL_free(XBIOS_modelist);
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44 XBIOS_nummodes = 0;
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45 XBIOS_modelist = NULL;
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46 }
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47
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48 /* Add Centscreen modes */
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49 Vread(&curmode);
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50 cur_handle = curmode.handle;
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51 curmode.mode = curmode.physx = curmode.physy = curmode.plan =
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52 curmode.logx = curmode.logy = -1;
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53
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54 result = Vfirst(&curmode, &listedmode);
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55 if (result==0) {
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56 while (result==0) {
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57 /* Don't add modes with virtual screen */
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58 if ((listedmode.mode & CSCREEN_VIRTUAL)==0) {
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59 /* Don't add modes with bpp<8 */
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60 if (listedmode.plan>=8) {
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61 SDL_XBIOS_AddMode(this, listedmode.mode, listedmode.physx,
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62 listedmode.physy, listedmode.plan, SDL_FALSE
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63 );
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64 }
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65 }
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66 SDL_memcpy(&curmode, &listedmode, sizeof(centscreen_mode_t));
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67 curmode.mode = curmode.physx = curmode.physy = curmode.plan =
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68 curmode.logx = curmode.logy = -1;
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69 result = Vnext(&curmode, &listedmode);
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70 }
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71 } else {
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72 fprintf(stderr, "No suitable Centscreen modes\n");
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73 }
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74
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75 return cur_handle;
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76 }
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77
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78 void SDL_XBIOS_CentscreenSetmode(_THIS, int width, int height, int planes)
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79 {
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80 centscreen_mode_t newmode, curmode;
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81
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82 newmode.handle = newmode.mode = newmode.logx = newmode.logy = -1;
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83 newmode.physx = width;
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84 newmode.physy = height;
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85 newmode.plan = planes;
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86 Vwrite(0, &newmode, &curmode);
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87
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88 /* Disable screensaver */
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89 Vread(&newmode);
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90 newmode.mode &= ~(CSCREEN_SAVER|CSCREEN_ENERGYSTAR);
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91 Vwrite(0, &newmode, &curmode);
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92 }
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93
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94 void SDL_XBIOS_CentscreenRestore(_THIS, int prev_handle)
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95 {
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96 centscreen_mode_t newmode, curmode;
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97
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98 /* Restore old video mode */
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99 newmode.handle = prev_handle;
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100 newmode.mode = newmode.physx = newmode.physy = newmode.plan =
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101 newmode.logx = newmode.logy = -1;
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102 Vwrite(0, &newmode, &curmode);
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103 }