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annotate src/video/xbios/SDL_xbios_sb3.c @ 4249:429c8dd3175d SDL-1.2

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Fixed bug #713 Don't clamp the mouse coordinates to the video surface size, instead clamp them to the last known window size. This allows users to get the correct mouse coordinates even if they don't call SDL_SetVideoMode() in response to an SDL_VIDEORESIZE event (used as a hack to retain the OpenGL context on Windows and Linux after a window resize)
author Sam Lantinga <slouken@libsdl.org>
date Sun, 27 Sep 2009 05:18:43 +0000
parents 6405314a7c07
children
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 ScreenBlaster 3 functions
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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 /*--- Includes ---*/
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31
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32 #include "SDL_stdinc.h"
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33 #include "SDL_xbios.h"
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34 #include "SDL_xbios_sb3.h"
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35
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36 /*--- Defines ---*/
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37
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38 const int SDL_XBIOS_scpn_planes_device[]={
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39 SCPN_DEV_1BPP,
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40 SCPN_DEV_4BPP,
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41 SCPN_DEV_8BPP,
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42 SCPN_DEV_16BPP,
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43 SCPN_DEV_2BPP,
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44 SCPN_DEV_4BPP,
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45 SCPN_DEV_1BPP
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46 };
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47
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48 /*--- Functions ---*/
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49
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50 int SDL_XBIOS_SB3Usable(scpn_cookie_t *cookie_scpn)
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51 {
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52 scpn_screeninfo_t *scrinfo;
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53 int bpp;
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54
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55 /* Check if current SB3 mode is usable, i.e. 8 or 16bpp */
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56 scrinfo = cookie_scpn->screen_info;
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57 bpp = 1<<(SDL_XBIOS_scpn_planes_device[scrinfo->device]);
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58
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59 if ((bpp==8) || (bpp==16)) {
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60 return 1;
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61 }
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62
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63 return 0;
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64 }
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65
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66 void SDL_XBIOS_ListSB3Modes(_THIS, int actually_add, scpn_cookie_t *cookie_scpn)
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67 {
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68 scpn_screeninfo_t *scrinfo;
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69 xbiosmode_t modeinfo;
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70
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71 scrinfo = cookie_scpn->screen_info;
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72 if (actually_add) {
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73 scrinfo->h_pos = scrinfo->v_pos = 0;
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74 }
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75
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76 modeinfo.number = -1;
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77 modeinfo.width = scrinfo->virtual_width;
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78 modeinfo.height = scrinfo->virtual_height;
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79 modeinfo.depth = 1<<(SDL_XBIOS_scpn_planes_device[scrinfo->device]);
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80 modeinfo.flags = (modeinfo.depth == 8 ? XBIOSMODE_C2P : 0);
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81
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82 SDL_XBIOS_AddMode(this, actually_add, &modeinfo);
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83 }