annotate src/video/svga/SDL_svgavideo.c @ 297:f6ffac90895c

Updated copyright information for 2002
author Sam Lantinga <slouken@libsdl.org>
date Wed, 06 Mar 2002 11:23:08 +0000
parents e8157fcb3114
children b8d311d90021
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, 1998, 1999, 2000, 2001, 2002 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
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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 /* SVGAlib based SDL video driver implementation.
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29 */
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30
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31 #include <stdlib.h>
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32 #include <stdio.h>
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33 #include <unistd.h>
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34 #include <sys/stat.h>
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35 #include <sys/types.h>
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36 #include <sys/ioctl.h>
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37 #include <fcntl.h>
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38
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39 #if defined(linux)
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40 #include <linux/vt.h>
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41 #elif defined(__FreeBSD__)
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42 #include <sys/consio.h>
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43 #else
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44 #error You must choose your operating system here
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45 #endif
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46 #include <vga.h>
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47 #include <vgamouse.h>
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48 #include <vgakeyboard.h>
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49
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50 #include "SDL.h"
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51 #include "SDL_error.h"
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52 #include "SDL_video.h"
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53 #include "SDL_mouse.h"
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54 #include "SDL_sysvideo.h"
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55 #include "SDL_pixels_c.h"
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56 #include "SDL_events_c.h"
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57 #include "SDL_svgavideo.h"
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58 #include "SDL_svgaevents_c.h"
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59 #include "SDL_svgamouse_c.h"
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60
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61
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62 /* Initialization/Query functions */
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63 static int SVGA_VideoInit(_THIS, SDL_PixelFormat *vformat);
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64 static SDL_Rect **SVGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
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65 static SDL_Surface *SVGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
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66 static int SVGA_SetColors(_THIS, int firstcolor, int ncolors,
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67 SDL_Color *colors);
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68 static void SVGA_VideoQuit(_THIS);
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69
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70 /* Hardware surface functions */
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71 static int SVGA_AllocHWSurface(_THIS, SDL_Surface *surface);
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72 static int SVGA_LockHWSurface(_THIS, SDL_Surface *surface);
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73 static int SVGA_FlipHWSurface(_THIS, SDL_Surface *surface);
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74 static void SVGA_UnlockHWSurface(_THIS, SDL_Surface *surface);
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75 static void SVGA_FreeHWSurface(_THIS, SDL_Surface *surface);
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76
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77 /* SVGAlib driver bootstrap functions */
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78
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79 static int SVGA_Available(void)
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80 {
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81 /* Check to see if we are root and stdin is a virtual console */
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82 int console;
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83
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84 /* SVGALib 1.9.x+ doesn't require root (via /dev/svga) */
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85 int svgalib2 = -1;
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86
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87 /* See if we are connected to a virtual terminal */
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88 console = STDIN_FILENO;
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89 #if 0 /* This is no longer needed, SVGAlib can switch consoles for us */
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90 if ( console >= 0 ) {
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91 struct stat sb;
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92 struct vt_mode dummy;
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93
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94 if ( (fstat(console, &sb) < 0) ||
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95 (ioctl(console, VT_GETMODE, &dummy) < 0) ) {
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96 console = -1;
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97 }
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98 }
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99 #endif /* 0 */
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100
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101 /* See if SVGAlib 2.0 is available */
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102 svgalib2 = open("/dev/svga", O_RDONLY);
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103 if (svgalib2 != -1) {
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104 close(svgalib2);
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105 }
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106
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107 return(((svgalib2 != -1) || (geteuid() == 0)) && (console >= 0));
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108 }
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109
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110 static void SVGA_DeleteDevice(SDL_VideoDevice *device)
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111 {
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112 free(device->hidden);
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113 free(device);
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114 }
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115
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116 static SDL_VideoDevice *SVGA_CreateDevice(int devindex)
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117 {
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118 SDL_VideoDevice *device;
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119
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120 /* Initialize all variables that we clean on shutdown */
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121 device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
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122 if ( device ) {
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123 memset(device, 0, (sizeof *device));
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124 device->hidden = (struct SDL_PrivateVideoData *)
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125 malloc((sizeof *device->hidden));
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126 }
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127 if ( (device == NULL) || (device->hidden == NULL) ) {
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128 SDL_OutOfMemory();
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129 if ( device ) {
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130 free(device);
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131 }
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132 return(0);
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133 }
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134 memset(device->hidden, 0, (sizeof *device->hidden));
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135
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136 /* Set the function pointers */
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137 device->VideoInit = SVGA_VideoInit;
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138 device->ListModes = SVGA_ListModes;
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139 device->SetVideoMode = SVGA_SetVideoMode;
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140 device->SetColors = SVGA_SetColors;
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141 device->UpdateRects = NULL;
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142 device->VideoQuit = SVGA_VideoQuit;
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143 device->AllocHWSurface = SVGA_AllocHWSurface;
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144 device->CheckHWBlit = NULL;
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145 device->FillHWRect = NULL;
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146 device->SetHWColorKey = NULL;
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147 device->SetHWAlpha = NULL;
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148 device->LockHWSurface = SVGA_LockHWSurface;
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149 device->UnlockHWSurface = SVGA_UnlockHWSurface;
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150 device->FlipHWSurface = SVGA_FlipHWSurface;
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151 device->FreeHWSurface = SVGA_FreeHWSurface;
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152 device->SetCaption = NULL;
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153 device->SetIcon = NULL;
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154 device->IconifyWindow = NULL;
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155 device->GrabInput = NULL;
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156 device->GetWMInfo = NULL;
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157 device->InitOSKeymap = SVGA_InitOSKeymap;
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158 device->PumpEvents = SVGA_PumpEvents;
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159
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160 device->free = SVGA_DeleteDevice;
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161
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162 return device;
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163 }
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164
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parents:
diff changeset
165 VideoBootStrap SVGALIB_bootstrap = {
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parents:
diff changeset
166 "svgalib", "SVGAlib",
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parents:
diff changeset
167 SVGA_Available, SVGA_CreateDevice
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parents:
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168 };
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169
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parents:
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170 static int SVGA_AddMode(_THIS, int mode, int actually_add, int force)
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parents:
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171 {
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172 vga_modeinfo *modeinfo;
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diff changeset
173
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parents:
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174 modeinfo = vga_getmodeinfo(mode);
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parents:
diff changeset
175 if ( force || ( modeinfo->flags & CAPABLE_LINEAR ) ) {
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parents:
diff changeset
176 int i, j;
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parents:
diff changeset
177
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178 i = modeinfo->bytesperpixel-1;
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parents:
diff changeset
179 if ( actually_add ) {
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parents:
diff changeset
180 SDL_Rect saved_rect[2];
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parents:
diff changeset
181 int saved_mode[2];
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diff changeset
182 int b;
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parents:
diff changeset
183
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parents:
diff changeset
184 /* Add the mode, sorted largest to smallest */
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parents:
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185 b = 0;
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parents:
diff changeset
186 j = 0;
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parents:
diff changeset
187 while ( (SDL_modelist[i][j]->w > modeinfo->width) ||
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parents:
diff changeset
188 (SDL_modelist[i][j]->h > modeinfo->height) ) {
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parents:
diff changeset
189 ++j;
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parents:
diff changeset
190 }
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parents:
diff changeset
191 /* Skip modes that are already in our list */
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parents:
diff changeset
192 if ( (SDL_modelist[i][j]->w == modeinfo->width) &&
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parents:
diff changeset
193 (SDL_modelist[i][j]->h == modeinfo->height) ) {
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parents:
diff changeset
194 return(0);
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parents:
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195 }
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parents:
diff changeset
196 /* Insert the new mode */
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parents:
diff changeset
197 saved_rect[b] = *SDL_modelist[i][j];
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parents:
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198 saved_mode[b] = SDL_vgamode[i][j];
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199 SDL_modelist[i][j]->w = modeinfo->width;
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diff changeset
200 SDL_modelist[i][j]->h = modeinfo->height;
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parents:
diff changeset
201 SDL_vgamode[i][j] = mode;
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parents:
diff changeset
202 /* Everybody scoot down! */
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parents:
diff changeset
203 if ( saved_rect[b].w && saved_rect[b].h ) {
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parents:
diff changeset
204 for ( ++j; SDL_modelist[i][j]->w; ++j ) {
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parents:
diff changeset
205 saved_rect[!b] = *SDL_modelist[i][j];
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parents:
diff changeset
206 saved_mode[!b] = SDL_vgamode[i][j];
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parents:
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207 *SDL_modelist[i][j] = saved_rect[b];
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parents:
diff changeset
208 SDL_vgamode[i][j] = saved_mode[b];
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parents:
diff changeset
209 b = !b;
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parents:
diff changeset
210 }
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parents:
diff changeset
211 *SDL_modelist[i][j] = saved_rect[b];
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parents:
diff changeset
212 SDL_vgamode[i][j] = saved_mode[b];
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parents:
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213 }
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parents:
diff changeset
214 } else {
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parents:
diff changeset
215 ++SDL_nummodes[i];
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parents:
diff changeset
216 }
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parents:
diff changeset
217 }
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parents:
diff changeset
218 return( force || ( modeinfo->flags & CAPABLE_LINEAR ) );
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parents:
diff changeset
219 }
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parents:
diff changeset
220
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diff changeset
221 static void SVGA_UpdateVideoInfo(_THIS)
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parents:
diff changeset
222 {
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diff changeset
223 vga_modeinfo *modeinfo;
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parents:
diff changeset
224
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225 this->info.wm_available = 0;
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diff changeset
226 this->info.hw_available = 1;
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diff changeset
227 modeinfo = vga_getmodeinfo(vga_getcurrentmode());
205
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
228 this->info.video_mem = modeinfo->memory;
0
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parents:
diff changeset
229 /* FIXME: Add hardware accelerated blit information */
226
bb72c418a1f9 Disabled virtual terminal check for SVGAlib video
Sam Lantinga <slouken@libsdl.org>
parents: 205
diff changeset
230 #ifdef SVGALIB_DEBUG
bb72c418a1f9 Disabled virtual terminal check for SVGAlib video
Sam Lantinga <slouken@libsdl.org>
parents: 205
diff changeset
231 printf("Hardware accelerated blit: %savailable\n", modeinfo->haveblit ? "" : "not ");
0
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parents:
diff changeset
232 #endif
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parents:
diff changeset
233 }
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parents:
diff changeset
234
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parents:
diff changeset
235 int SVGA_VideoInit(_THIS, SDL_PixelFormat *vformat)
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parents:
diff changeset
236 {
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parents:
diff changeset
237 int keyboard;
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parents:
diff changeset
238 int i, j;
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parents:
diff changeset
239 int mode, total_modes;
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parents:
diff changeset
240
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parents:
diff changeset
241 /* Initialize all variables that we clean on shutdown */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
242 for ( i=0; i<NUM_MODELISTS; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
243 SDL_nummodes[i] = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
244 SDL_modelist[i] = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
245 SDL_vgamode[i] = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
246 }
74212992fb08 Initial revision
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parents:
diff changeset
247
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parents:
diff changeset
248 /* Initialize the library */
74212992fb08 Initial revision
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parents:
diff changeset
249 vga_disabledriverreport();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
250 if ( vga_init() < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
251 SDL_SetError("Unable to initialize SVGAlib");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
252 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
253 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
254 vga_setmode(TEXT);
74212992fb08 Initial revision
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parents:
diff changeset
255
74212992fb08 Initial revision
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parents:
diff changeset
256 /* Enable mouse and keyboard support */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
257 vga_setmousesupport(1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
258 keyboard = keyboard_init_return_fd();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
259 if ( keyboard < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
260 SDL_SetError("Unable to initialize keyboard");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
261 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
262 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
263 if ( SVGA_initkeymaps(keyboard) < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
264 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
265 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
266 keyboard_seteventhandler(SVGA_keyboardcallback);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
267
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
268 /* Determine the screen depth (use default 8-bit depth) */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
269 vformat->BitsPerPixel = 8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
270
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
271 /* Enumerate the available fullscreen modes */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
272 total_modes = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
273 for ( mode=vga_lastmodenumber(); mode; --mode ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
274 if ( vga_hasmode(mode) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
275 if ( SVGA_AddMode(this, mode, 0, 0) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
276 ++total_modes;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
277 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
278 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
279 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
280 if ( SVGA_AddMode(this, G320x200x256, 0, 1) ) ++total_modes;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
281 if ( total_modes == 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
282 SDL_SetError("No linear video modes available");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
283 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
284 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
285 for ( i=0; i<NUM_MODELISTS; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
286 SDL_vgamode[i] = (int *)malloc(SDL_nummodes[i]*sizeof(int));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
287 if ( SDL_vgamode[i] == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
288 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
289 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
290 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
291 SDL_modelist[i] = (SDL_Rect **)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
292 malloc((SDL_nummodes[i]+1)*sizeof(SDL_Rect *));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
293 if ( SDL_modelist[i] == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
294 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
295 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
296 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
297 for ( j=0; j<SDL_nummodes[i]; ++j ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
298 SDL_modelist[i][j]=(SDL_Rect *)malloc(sizeof(SDL_Rect));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
299 if ( SDL_modelist[i][j] == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
300 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
301 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
302 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 memset(SDL_modelist[i][j], 0, sizeof(SDL_Rect));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
304 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
305 SDL_modelist[i][j] = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
306 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
307 for ( mode=vga_lastmodenumber(); mode; --mode ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
308 if ( vga_hasmode(mode) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
309 SVGA_AddMode(this, mode, 1, 0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
310 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
311 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
312 SVGA_AddMode(this, G320x200x256, 1, 1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
313
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
314 /* Free extra (duplicated) modes */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
315 for ( i=0; i<NUM_MODELISTS; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
316 j = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317 while ( SDL_modelist[i][j] && SDL_modelist[i][j]->w ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
318 j++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
319 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
320 while ( SDL_modelist[i][j] ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321 free(SDL_modelist[i][j]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 SDL_modelist[i][j] = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 j++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 /* Fill in our hardware acceleration capabilities */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328 SVGA_UpdateVideoInfo(this);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329
74212992fb08 Initial revision
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parents:
diff changeset
330 /* We're done! */
74212992fb08 Initial revision
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parents:
diff changeset
331 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334 SDL_Rect **SVGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 /* Various screen update functions available */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340 static void SVGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
341 static void SVGA_BankedUpdate(_THIS, int numrects, SDL_Rect *rects);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
342
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
343 SDL_Surface *SVGA_SetVideoMode(_THIS, SDL_Surface *current,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
344 int width, int height, int bpp, Uint32 flags)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
345 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
346 int mode;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347 int vgamode;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
348 vga_modeinfo *modeinfo;
205
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
349 int screenpage_len;
0
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parents:
diff changeset
350
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351 /* Try to set the requested linear video mode */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 bpp = (bpp+7)/8-1;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353 for ( mode=0; SDL_modelist[bpp][mode]; ++mode ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 if ( (SDL_modelist[bpp][mode]->w == width) &&
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
355 (SDL_modelist[bpp][mode]->h == height) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
357 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
358 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
359 if ( SDL_modelist[bpp][mode] == NULL ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360 SDL_SetError("Couldn't find requested mode in list");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
361 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363 vga_setmode(SDL_vgamode[bpp][mode]);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 vga_setpage(0);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
366 vgamode=SDL_vgamode[bpp][mode];
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367 if ((vga_setlinearaddressing()<0) && (vgamode!=G320x200x256)) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 SDL_SetError("Unable to set linear addressing");
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371 modeinfo = vga_getmodeinfo(SDL_vgamode[bpp][mode]);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
372
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
373 /* Update hardware acceleration info */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
374 SVGA_UpdateVideoInfo(this);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
375
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
376 /* Allocate the new pixel format for the screen */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
377 bpp = (bpp+1)*8;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378 if ( (bpp == 16) && (modeinfo->colors == 32768) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
379 bpp = 15;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381 if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
382 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 /* Set up the new mode framebuffer */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 current->flags = (SDL_FULLSCREEN|SDL_HWSURFACE);
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
387 if ( bpp == 8 ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
388 /* FIXME: What about DirectColor? */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
389 current->flags |= SDL_HWPALETTE;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
390 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 current->w = width;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392 current->h = height;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393 current->pitch = modeinfo->linewidth;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394 current->pixels = vga_getgraphmem();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395
205
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
396 /* set double-buffering */
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
397 if ( flags & SDL_DOUBLEBUF )
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
398 {
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
399 /* length of one screen page in bytes */
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
400 screenpage_len=current->h*modeinfo->linewidth;
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
401
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
402 /* if start address should be aligned */
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
403 if ( modeinfo->linewidth_unit )
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
404 {
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
405 if ( screenpage_len % modeinfo->linewidth_unit )
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
406 {
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
407 screenpage_len += modeinfo->linewidth_unit - ( screenpage_len % modeinfo->linewidth_unit );
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
408 }
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
409 }
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
410
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
411 /* if we heve enough videomemory = ak je dost videopamete */
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
412 if ( modeinfo->memory > ( screenpage_len * 2 / 1024 ) )
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
413 {
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
414 current->flags |= SDL_DOUBLEBUF;
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
415 flip_page = 0;
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
416 flip_offset[0] = 0;
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
417 flip_offset[1] = screenpage_len;
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
418 flip_address[0] = vga_getgraphmem();
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
419 flip_address[1] = flip_address[0]+screenpage_len;
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
420 SVGA_FlipHWSurface(this,current);
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
421 }
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
422 }
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
423
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 /* Set the blit function */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 this->UpdateRects = SVGA_DirectUpdate;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 /* Set up the mouse handler again (buggy SVGAlib 1.40) */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 mouse_seteventhandler(SVGA_mousecallback);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 /* We're done */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 return(current);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434 /* We don't actually allow hardware surfaces other than the main one */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 static int SVGA_AllocHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439 static void SVGA_FreeHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 /* We need to wait for vertical retrace on page flipped displays */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 static int SVGA_LockHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 {
205
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
447 /* The waiting is done in SVGA_FlipHWSurface() */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450 static void SVGA_UnlockHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 static int SVGA_FlipHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 {
205
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
457 vga_setdisplaystart(flip_offset[flip_page]);
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
458 flip_page=!flip_page;
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
459 surface->pixels=flip_address[flip_page];
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
460 vga_waitretrace();
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464 static void SVGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 /* FIXME: Can this be used under SVGAlib? */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 static void SVGA_BankedUpdate(_THIS, int numrects, SDL_Rect *rects)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 int SVGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479 for(i = 0; i < ncolors; i++) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 vga_setpalette(firstcolor + i,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 colors[i].r>>2,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 colors[i].g>>2,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 colors[i].b>>2);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 return(1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 }
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487
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488 /* Note: If we are terminated, this could be called in the middle of
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489 another SDL video routine -- notably UpdateRects.
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490 */
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491 void SVGA_VideoQuit(_THIS)
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492 {
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493 int i, j;
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494
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495 /* Reset the console video mode */
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496 if ( this->screen && (this->screen->w && this->screen->h) ) {
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497 vga_setmode(TEXT);
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498 }
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499 keyboard_close();
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500
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501 /* Free video mode lists */
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502 for ( i=0; i<NUM_MODELISTS; ++i ) {
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503 if ( SDL_modelist[i] != NULL ) {
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504 for ( j=0; SDL_modelist[i][j]; ++j )
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505 free(SDL_modelist[i][j]);
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506 free(SDL_modelist[i]);
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507 SDL_modelist[i] = NULL;
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508 }
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509 if ( SDL_vgamode[i] != NULL ) {
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510 free(SDL_vgamode[i]);
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511 SDL_vgamode[i] = NULL;
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512 }
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513 }
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514 if ( this->screen && (this->screen->flags & SDL_HWSURFACE) ) {
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515 /* Direct screen access, no memory buffer */
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516 this->screen->pixels = NULL;
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517 }
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518 }
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519