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annotate src/video/epoc/SDL_epocvideo.h @ 1554:0ca607a5d173

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Fixed bug #84 Date: Sun, 23 Oct 2005 16:39:03 +0200 From: "A. Schmid" <sahib@phreaker.net> Subject: [SDL] no software surfaces with svgalib driver? Hi, I noticed that the SDL (1.2.9) svgalib driver only makes use of linear addressable (framebuffer) video modes. On older systems (like one of mine), linear addressable modes are often not available. Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is unusable, since VESA only supports framebuffering for VBE 2.0 and later. The changes necessary to add support for software surfaces seem to be relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see attached patch). The code worked fine for me, but it is no more than a proof of concept and should be reviewed (probably has a memory leak when switching modes). It also uses the vgagl library (included in the svgalib package) and needs to be linked against it. -Alex
author Sam Lantinga <slouken@libsdl.org>
date Sun, 19 Mar 2006 12:04:40 +0000
parents d910939febfa
children 782fd950bd46 c121d94672cb
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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 SDL_epocvideo.h
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26 Epoc based SDL video driver implementation
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27
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28 Epoc version by Hannu Viitala (hannu.j.viitala@mbnet.fi)
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29 */
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30
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31 #ifndef _SDL_epocvideo_h
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32 #define _SDL_epocvideo_h
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33
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34 extern "C" {
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35 #include "SDL_mouse.h"
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36 #include "../SDL_sysvideo.h"
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37 };
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38
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39 #include <e32std.h>
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40 #include <bitdev.h>
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41 #include <w32std.h>
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42
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43 /* Hidden "this" pointer for the video functions */
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44 #define _THIS SDL_VideoDevice *_this
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45 #define Private _this->hidden
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46
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47 #define SDL_NUMMODES 4
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48
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49 /* Private display data */
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50 struct SDL_PrivateVideoData {
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51
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52 SDL_Rect *SDL_modelist[SDL_NUMMODES+1];
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53
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54 /* Epoc window server info */
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55
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56 RWsSession EPOC_WsSession;
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57 RWindowGroup EPOC_WsWindowGroup;
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58 TInt EPOC_WsWindowGroupID;
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59 RWindow EPOC_WsWindow;
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60 CWsScreenDevice* EPOC_WsScreen;
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61 CWindowGc* EPOC_WindowGc;
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62 TRequestStatus EPOC_WsEventStatus;
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63 TRequestStatus EPOC_RedrawEventStatus;
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64 TWsEvent EPOC_WsEvent;
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65 TWsRedrawEvent EPOC_RedrawEvent;
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66 #ifdef __WINS__
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67 CWsBitmap* EPOC_Bitmap;
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68 #endif
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69 TBool EPOC_IsWindowFocused; //!!Not used for anything yet!
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70
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71 /* Screen hardware frame buffer info */
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72
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73 TBool EPOC_HasFrameBuffer;
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74 TInt EPOC_BytesPerPixel;
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75 TInt EPOC_BytesPerScanLine;
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76 TDisplayMode EPOC_DisplayMode;
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77 TSize EPOC_ScreenSize;
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78 TUint8* EPOC_FrameBuffer; /* if NULL in HW we can't do direct screen access */
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79 TInt EPOC_ScreenOffset;
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80
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81 /* Simulate double screen height */
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82 TBool EPOC_ShrinkedHeight;
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83 };
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84
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85 extern "C" {
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86 extern void RedrawWindowL(_THIS);
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87 };
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90 #endif /* _SDL_epocvideo_h */