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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 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@devolution.com
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 #ifndef _SDL_dgavideo_h
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29 #define _SDL_dgavideo_h
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30
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31 #include <X11/Xlib.h>
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32
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33 #include "SDL_mouse.h"
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34 #include "SDL_mutex.h"
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35 #include "SDL_sysvideo.h"
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36
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37 /* Hidden "this" pointer for the video functions */
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38 #define _THIS SDL_VideoDevice *this
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39
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40
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41 /* This is the structure we use to keep track of video memory */
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42 typedef struct vidmem_bucket {
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43 struct vidmem_bucket *prev;
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44 unsigned int used;
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45 Uint8 *base;
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46 unsigned int size;
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47 struct vidmem_bucket *next;
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48 } vidmem_bucket;
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49
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50 /* Information about the location of the surface in hardware memory */
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51 struct private_hwdata {
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52 int x;
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53 int y;
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54 };
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55
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56 /* Private display data */
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57 struct SDL_PrivateVideoData {
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58 Display *DGA_Display;
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59 Colormap DGA_colormap;
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60 int visualClass;
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61
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62 #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */
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63 int SDL_nummodes[NUM_MODELISTS];
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64 SDL_Rect **SDL_modelist[NUM_MODELISTS];
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65
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66 /* Information for the video surface */
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67 Uint8 *memory_base;
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68 int memory_pitch;
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69 SDL_mutex *hw_lock;
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70 int sync_needed;
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71 int was_flipped;
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72
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73 /* Information for hardware surfaces */
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74 vidmem_bucket surfaces;
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75 int surfaces_memtotal;
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76 int surfaces_memleft;
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77
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78 /* Information for double-buffering */
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79 int flip_page;
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80 int flip_yoffset[2];
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81 Uint8 *flip_address[2];
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82
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83 /* Used to handle DGA events */
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84 int event_base;
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85 };
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86 /* Old variable names */
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87 #define DGA_Display (this->hidden->DGA_Display)
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88 #define DGA_Screen DefaultScreen(DGA_Display)
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89 #define DGA_colormap (this->hidden->DGA_colormap)
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90 #define DGA_visualClass (this->hidden->visualClass)
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91 #define memory_base (this->hidden->memory_base)
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92 #define memory_pitch (this->hidden->memory_pitch)
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93 #define flip_page (this->hidden->flip_page)
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94 #define flip_yoffset (this->hidden->flip_yoffset)
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95 #define flip_address (this->hidden->flip_address)
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96 #define sync_needed (this->hidden->sync_needed)
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97 #define was_flipped (this->hidden->was_flipped)
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98 #define SDL_nummodes (this->hidden->SDL_nummodes)
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99 #define SDL_modelist (this->hidden->SDL_modelist)
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100 #define surfaces (this->hidden->surfaces)
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101 #define surfaces_memtotal (this->hidden->surfaces_memtotal)
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102 #define surfaces_memleft (this->hidden->surfaces_memleft)
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103 #define hw_lock (this->hidden->hw_lock)
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104 #define DGA_event_base (this->hidden->event_base)
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105
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106 #endif /* _SDL_dgavideo_h */
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