annotate src/video/svga/SDL_svgavideo.c @ 1338:604d73db6802

Removed uses of stdlib.h and string.h
author Sam Lantinga <slouken@libsdl.org>
date Tue, 07 Feb 2006 09:29:18 +0000
parents 3692456e7b0f
children c71e05b4dc2e
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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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 /* SVGAlib based SDL video driver implementation.
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24 */
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25
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26 #include <unistd.h>
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27 #include <sys/stat.h>
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28 #include <sys/types.h>
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29 #include <sys/ioctl.h>
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30 #include <fcntl.h>
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31
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32 #if defined(linux)
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33 #include <linux/vt.h>
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34 #elif defined(__FreeBSD__)
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35 #include <sys/consio.h>
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36 #else
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37 #error You must choose your operating system here
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38 #endif
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39 #include <vga.h>
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40 #include <vgamouse.h>
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41 #include <vgakeyboard.h>
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42
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43 #include "SDL.h"
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44 #include "SDL_stdlib.h"
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45 #include "SDL_string.h"
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46 #include "SDL_error.h"
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47 #include "SDL_video.h"
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48 #include "SDL_mouse.h"
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49 #include "SDL_sysvideo.h"
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50 #include "SDL_pixels_c.h"
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51 #include "SDL_events_c.h"
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52 #include "SDL_svgavideo.h"
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53 #include "SDL_svgaevents_c.h"
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54 #include "SDL_svgamouse_c.h"
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55
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56
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57 /* Initialization/Query functions */
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58 static int SVGA_VideoInit(_THIS, SDL_PixelFormat *vformat);
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59 static SDL_Rect **SVGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
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60 static SDL_Surface *SVGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
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61 static int SVGA_SetColors(_THIS, int firstcolor, int ncolors,
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62 SDL_Color *colors);
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63 static void SVGA_VideoQuit(_THIS);
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64
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65 /* Hardware surface functions */
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66 static int SVGA_AllocHWSurface(_THIS, SDL_Surface *surface);
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67 static int SVGA_LockHWSurface(_THIS, SDL_Surface *surface);
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68 static int SVGA_FlipHWSurface(_THIS, SDL_Surface *surface);
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69 static void SVGA_UnlockHWSurface(_THIS, SDL_Surface *surface);
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70 static void SVGA_FreeHWSurface(_THIS, SDL_Surface *surface);
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71
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72 /* SVGAlib driver bootstrap functions */
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73
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74 static int SVGA_Available(void)
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75 {
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76 /* Check to see if we are root and stdin is a virtual console */
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77 int console;
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78
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79 /* SVGALib 1.9.x+ doesn't require root (via /dev/svga) */
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80 int svgalib2 = -1;
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81
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82 /* See if we are connected to a virtual terminal */
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83 console = STDIN_FILENO;
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84 #if 0 /* This is no longer needed, SVGAlib can switch consoles for us */
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85 if ( console >= 0 ) {
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86 struct stat sb;
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87 struct vt_mode dummy;
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88
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89 if ( (fstat(console, &sb) < 0) ||
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90 (ioctl(console, VT_GETMODE, &dummy) < 0) ) {
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91 console = -1;
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92 }
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93 }
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94 #endif /* 0 */
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95
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96 /* See if SVGAlib 2.0 is available */
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97 svgalib2 = open("/dev/svga", O_RDONLY);
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98 if (svgalib2 != -1) {
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99 close(svgalib2);
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100 }
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101
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102 return(((svgalib2 != -1) || (geteuid() == 0)) && (console >= 0));
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103 }
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104
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105 static void SVGA_DeleteDevice(SDL_VideoDevice *device)
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106 {
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107 SDL_free(device->hidden);
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108 SDL_free(device);
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109 }
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110
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111 static SDL_VideoDevice *SVGA_CreateDevice(int devindex)
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112 {
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113 SDL_VideoDevice *device;
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114
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115 /* Initialize all variables that we clean on shutdown */
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116 device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
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117 if ( device ) {
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118 SDL_memset(device, 0, (sizeof *device));
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119 device->hidden = (struct SDL_PrivateVideoData *)
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120 SDL_malloc((sizeof *device->hidden));
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121 }
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122 if ( (device == NULL) || (device->hidden == NULL) ) {
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123 SDL_OutOfMemory();
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124 if ( device ) {
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125 SDL_free(device);
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126 }
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127 return(0);
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128 }
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129 SDL_memset(device->hidden, 0, (sizeof *device->hidden));
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130
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131 /* Set the function pointers */
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132 device->VideoInit = SVGA_VideoInit;
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133 device->ListModes = SVGA_ListModes;
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134 device->SetVideoMode = SVGA_SetVideoMode;
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135 device->SetColors = SVGA_SetColors;
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136 device->UpdateRects = NULL;
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137 device->VideoQuit = SVGA_VideoQuit;
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138 device->AllocHWSurface = SVGA_AllocHWSurface;
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139 device->CheckHWBlit = NULL;
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140 device->FillHWRect = NULL;
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141 device->SetHWColorKey = NULL;
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142 device->SetHWAlpha = NULL;
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143 device->LockHWSurface = SVGA_LockHWSurface;
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144 device->UnlockHWSurface = SVGA_UnlockHWSurface;
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145 device->FlipHWSurface = SVGA_FlipHWSurface;
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146 device->FreeHWSurface = SVGA_FreeHWSurface;
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147 device->SetCaption = NULL;
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148 device->SetIcon = NULL;
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149 device->IconifyWindow = NULL;
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150 device->GrabInput = NULL;
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151 device->GetWMInfo = NULL;
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152 device->InitOSKeymap = SVGA_InitOSKeymap;
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153 device->PumpEvents = SVGA_PumpEvents;
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154
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diff changeset
155 device->free = SVGA_DeleteDevice;
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156
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157 return device;
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parents:
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158 }
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diff changeset
159
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parents:
diff changeset
160 VideoBootStrap SVGALIB_bootstrap = {
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parents:
diff changeset
161 "svgalib", "SVGAlib",
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parents:
diff changeset
162 SVGA_Available, SVGA_CreateDevice
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parents:
diff changeset
163 };
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164
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165 static int SVGA_AddMode(_THIS, int mode, int actually_add, int force)
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166 {
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167 vga_modeinfo *modeinfo;
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diff changeset
168
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169 modeinfo = vga_getmodeinfo(mode);
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parents:
diff changeset
170 if ( force || ( modeinfo->flags & CAPABLE_LINEAR ) ) {
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diff changeset
171 int i, j;
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diff changeset
172
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diff changeset
173 i = modeinfo->bytesperpixel-1;
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parents:
diff changeset
174 if ( actually_add ) {
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parents:
diff changeset
175 SDL_Rect saved_rect[2];
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parents:
diff changeset
176 int saved_mode[2];
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177 int b;
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diff changeset
178
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parents:
diff changeset
179 /* Add the mode, sorted largest to smallest */
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diff changeset
180 b = 0;
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diff changeset
181 j = 0;
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diff changeset
182 while ( (SDL_modelist[i][j]->w > modeinfo->width) ||
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parents:
diff changeset
183 (SDL_modelist[i][j]->h > modeinfo->height) ) {
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parents:
diff changeset
184 ++j;
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parents:
diff changeset
185 }
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parents:
diff changeset
186 /* Skip modes that are already in our list */
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parents:
diff changeset
187 if ( (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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diff changeset
189 return(0);
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parents:
diff changeset
190 }
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parents:
diff changeset
191 /* Insert the new mode */
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parents:
diff changeset
192 saved_rect[b] = *SDL_modelist[i][j];
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193 saved_mode[b] = SDL_vgamode[i][j];
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194 SDL_modelist[i][j]->w = modeinfo->width;
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195 SDL_modelist[i][j]->h = modeinfo->height;
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196 SDL_vgamode[i][j] = mode;
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parents:
diff changeset
197 /* Everybody scoot down! */
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parents:
diff changeset
198 if ( saved_rect[b].w && saved_rect[b].h ) {
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parents:
diff changeset
199 for ( ++j; SDL_modelist[i][j]->w; ++j ) {
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diff changeset
200 saved_rect[!b] = *SDL_modelist[i][j];
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diff changeset
201 saved_mode[!b] = SDL_vgamode[i][j];
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parents:
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202 *SDL_modelist[i][j] = saved_rect[b];
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diff changeset
203 SDL_vgamode[i][j] = saved_mode[b];
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diff changeset
204 b = !b;
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parents:
diff changeset
205 }
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parents:
diff changeset
206 *SDL_modelist[i][j] = saved_rect[b];
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diff changeset
207 SDL_vgamode[i][j] = saved_mode[b];
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parents:
diff changeset
208 }
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parents:
diff changeset
209 } else {
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parents:
diff changeset
210 ++SDL_nummodes[i];
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parents:
diff changeset
211 }
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parents:
diff changeset
212 }
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parents:
diff changeset
213 return( force || ( modeinfo->flags & CAPABLE_LINEAR ) );
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parents:
diff changeset
214 }
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parents:
diff changeset
215
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diff changeset
216 static void SVGA_UpdateVideoInfo(_THIS)
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parents:
diff changeset
217 {
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diff changeset
218 vga_modeinfo *modeinfo;
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parents:
diff changeset
219
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diff changeset
220 this->info.wm_available = 0;
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parents:
diff changeset
221 this->info.hw_available = 1;
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diff changeset
222 modeinfo = vga_getmodeinfo(vga_getcurrentmode());
205
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
223 this->info.video_mem = modeinfo->memory;
0
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parents:
diff changeset
224 /* FIXME: Add hardware accelerated blit information */
226
bb72c418a1f9 Disabled virtual terminal check for SVGAlib video
Sam Lantinga <slouken@libsdl.org>
parents: 205
diff changeset
225 #ifdef SVGALIB_DEBUG
bb72c418a1f9 Disabled virtual terminal check for SVGAlib video
Sam Lantinga <slouken@libsdl.org>
parents: 205
diff changeset
226 printf("Hardware accelerated blit: %savailable\n", modeinfo->haveblit ? "" : "not ");
0
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parents:
diff changeset
227 #endif
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diff changeset
228 }
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parents:
diff changeset
229
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diff changeset
230 int SVGA_VideoInit(_THIS, SDL_PixelFormat *vformat)
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parents:
diff changeset
231 {
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parents:
diff changeset
232 int keyboard;
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parents:
diff changeset
233 int i, j;
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parents:
diff changeset
234 int mode, total_modes;
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parents:
diff changeset
235
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parents:
diff changeset
236 /* Initialize all variables that we clean on shutdown */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
237 for ( i=0; i<NUM_MODELISTS; ++i ) {
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parents:
diff changeset
238 SDL_nummodes[i] = 0;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
239 SDL_modelist[i] = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
240 SDL_vgamode[i] = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
241 }
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parents:
diff changeset
242
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parents:
diff changeset
243 /* Initialize the library */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
244 vga_disabledriverreport();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
245 if ( vga_init() < 0 ) {
74212992fb08 Initial revision
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parents:
diff changeset
246 SDL_SetError("Unable to initialize SVGAlib");
74212992fb08 Initial revision
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parents:
diff changeset
247 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
248 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
249 vga_setmode(TEXT);
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parents:
diff changeset
250
74212992fb08 Initial revision
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parents:
diff changeset
251 /* Enable mouse and keyboard support */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
252 vga_setmousesupport(1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
253 keyboard = keyboard_init_return_fd();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
254 if ( keyboard < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
255 SDL_SetError("Unable to initialize keyboard");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
256 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
257 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
258 if ( SVGA_initkeymaps(keyboard) < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
259 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
260 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
261 keyboard_seteventhandler(SVGA_keyboardcallback);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
262
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
263 /* Determine the screen depth (use default 8-bit depth) */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
264 vformat->BitsPerPixel = 8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
265
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
266 /* Enumerate the available fullscreen modes */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
267 total_modes = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
268 for ( mode=vga_lastmodenumber(); mode; --mode ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
269 if ( vga_hasmode(mode) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
270 if ( SVGA_AddMode(this, mode, 0, 0) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
271 ++total_modes;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
272 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
273 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
274 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
275 if ( SVGA_AddMode(this, G320x200x256, 0, 1) ) ++total_modes;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
276 if ( total_modes == 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
277 SDL_SetError("No linear video modes available");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
278 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
279 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
280 for ( i=0; i<NUM_MODELISTS; ++i ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
281 SDL_vgamode[i] = (int *)SDL_malloc(SDL_nummodes[i]*sizeof(int));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
282 if ( SDL_vgamode[i] == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
283 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
284 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
285 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
286 SDL_modelist[i] = (SDL_Rect **)
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
287 SDL_malloc((SDL_nummodes[i]+1)*sizeof(SDL_Rect *));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
288 if ( SDL_modelist[i] == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
289 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
290 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
291 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
292 for ( j=0; j<SDL_nummodes[i]; ++j ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
293 SDL_modelist[i][j]=(SDL_Rect *)SDL_malloc(sizeof(SDL_Rect));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
294 if ( SDL_modelist[i][j] == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
295 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
296 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
297 }
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
298 SDL_memset(SDL_modelist[i][j], 0, sizeof(SDL_Rect));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
299 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
300 SDL_modelist[i][j] = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
301 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
302 for ( mode=vga_lastmodenumber(); mode; --mode ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 if ( vga_hasmode(mode) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
304 SVGA_AddMode(this, mode, 1, 0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
305 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
306 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
307 SVGA_AddMode(this, G320x200x256, 1, 1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
308
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
309 /* Free extra (duplicated) modes */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
310 for ( i=0; i<NUM_MODELISTS; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
311 j = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
312 while ( SDL_modelist[i][j] && SDL_modelist[i][j]->w ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
313 j++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
314 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
315 while ( SDL_modelist[i][j] ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
316 SDL_free(SDL_modelist[i][j]);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317 SDL_modelist[i][j] = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
318 j++;
74212992fb08 Initial revision
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parents:
diff changeset
319 }
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parents:
diff changeset
320 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321
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parents:
diff changeset
322 /* Fill in our hardware acceleration capabilities */
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parents:
diff changeset
323 SVGA_UpdateVideoInfo(this);
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parents:
diff changeset
324
74212992fb08 Initial revision
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parents:
diff changeset
325 /* We're done! */
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parents:
diff changeset
326 return(0);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 }
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parents:
diff changeset
328
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parents:
diff changeset
329 SDL_Rect **SVGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
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parents:
diff changeset
330 {
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parents:
diff changeset
331 return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]);
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parents:
diff changeset
332 }
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parents:
diff changeset
333
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parents:
diff changeset
334 /* Various screen update functions available */
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parents:
diff changeset
335 static void SVGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects);
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parents:
diff changeset
336 static void SVGA_BankedUpdate(_THIS, int numrects, SDL_Rect *rects);
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parents:
diff changeset
337
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parents:
diff changeset
338 SDL_Surface *SVGA_SetVideoMode(_THIS, SDL_Surface *current,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 int width, int height, int bpp, Uint32 flags)
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parents:
diff changeset
340 {
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parents:
diff changeset
341 int mode;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
342 int vgamode;
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parents:
diff changeset
343 vga_modeinfo *modeinfo;
205
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
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parents: 67
diff changeset
344 int screenpage_len;
0
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parents:
diff changeset
345
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parents:
diff changeset
346 /* Try to set the requested linear video mode */
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parents:
diff changeset
347 bpp = (bpp+7)/8-1;
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parents:
diff changeset
348 for ( mode=0; SDL_modelist[bpp][mode]; ++mode ) {
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parents:
diff changeset
349 if ( (SDL_modelist[bpp][mode]->w == width) &&
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350 (SDL_modelist[bpp][mode]->h == height) ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 if ( SDL_modelist[bpp][mode] == NULL ) {
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parents:
diff changeset
355 SDL_SetError("Couldn't find requested mode in list");
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 return(NULL);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
357 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
358 vga_setmode(SDL_vgamode[bpp][mode]);
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parents:
diff changeset
359 vga_setpage(0);
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parents:
diff changeset
360
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parents:
diff changeset
361 vgamode=SDL_vgamode[bpp][mode];
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362 if ((vga_setlinearaddressing()<0) && (vgamode!=G320x200x256)) {
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parents:
diff changeset
363 SDL_SetError("Unable to set linear addressing");
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 return(NULL);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
366 modeinfo = vga_getmodeinfo(SDL_vgamode[bpp][mode]);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 /* Update hardware acceleration info */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369 SVGA_UpdateVideoInfo(this);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371 /* Allocate the new pixel format for the screen */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
372 bpp = (bpp+1)*8;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
373 if ( (bpp == 16) && (modeinfo->colors == 32768) ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
374 bpp = 15;
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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 if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
377 return(NULL);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
379
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380 /* Set up the new mode framebuffer */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381 current->flags = (SDL_FULLSCREEN|SDL_HWSURFACE);
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
382 if ( bpp == 8 ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
383 /* FIXME: What about DirectColor? */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
384 current->flags |= SDL_HWPALETTE;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
385 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 current->w = width;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387 current->h = height;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 current->pitch = modeinfo->linewidth;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389 current->pixels = vga_getgraphmem();
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
390
205
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
391 /* set double-buffering */
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
392 if ( flags & SDL_DOUBLEBUF )
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
393 {
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
394 /* 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
395 screenpage_len=current->h*modeinfo->linewidth;
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
396
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
397 /* if start address should be aligned */
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
398 if ( modeinfo->linewidth_unit )
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
399 {
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
400 if ( screenpage_len % modeinfo->linewidth_unit )
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 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
403 }
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
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
406 /* 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
407 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
408 {
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
409 current->flags |= SDL_DOUBLEBUF;
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
410 flip_page = 0;
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
411 flip_offset[0] = 0;
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
412 flip_offset[1] = screenpage_len;
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
413 flip_address[0] = vga_getgraphmem();
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
414 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
415 SVGA_FlipHWSurface(this,current);
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
416 }
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
417 }
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
418
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419 /* Set the blit function */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 this->UpdateRects = SVGA_DirectUpdate;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 /* Set up the mouse handler again (buggy SVGAlib 1.40) */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 mouse_seteventhandler(SVGA_mousecallback);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 /* We're done */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 return(current);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429 /* We don't actually allow hardware surfaces other than the main one */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 static int SVGA_AllocHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434 static void SVGA_FreeHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439 /* We need to wait for vertical retrace on page flipped displays */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440 static int SVGA_LockHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441 {
205
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
442 /* The waiting is done in SVGA_FlipHWSurface() */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 static void SVGA_UnlockHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 }
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 int SVGA_FlipHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 {
205
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
452 vga_setdisplaystart(flip_offset[flip_page]);
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
453 flip_page=!flip_page;
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
454 surface->pixels=flip_address[flip_page];
13161d3d349d Added double-buffering support for SVGAlib (thanks Kutak!)
Sam Lantinga <slouken@libsdl.org>
parents: 67
diff changeset
455 vga_waitretrace();
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459 static void SVGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 return;
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 /* FIXME: Can this be used under SVGAlib? */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 static void SVGA_BankedUpdate(_THIS, int numrects, SDL_Rect *rects)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 int SVGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 for(i = 0; i < ncolors; i++) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 vga_setpalette(firstcolor + i,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 colors[i].r>>2,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 colors[i].g>>2,
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478 colors[i].b>>2);
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479 }
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480 return(1);
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481 }
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482
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483 /* Note: If we are terminated, this could be called in the middle of
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484 another SDL video routine -- notably UpdateRects.
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485 */
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486 void SVGA_VideoQuit(_THIS)
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487 {
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488 int i, j;
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489
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490 /* Reset the console video mode */
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491 if ( this->screen && (this->screen->w && this->screen->h) ) {
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492 vga_setmode(TEXT);
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493 }
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494 keyboard_close();
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495
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496 /* Free video mode lists */
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497 for ( i=0; i<NUM_MODELISTS; ++i ) {
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498 if ( SDL_modelist[i] != NULL ) {
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499 for ( j=0; SDL_modelist[i][j]; ++j )
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500 SDL_free(SDL_modelist[i][j]);
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501 SDL_free(SDL_modelist[i]);
0
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502 SDL_modelist[i] = NULL;
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503 }
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504 if ( SDL_vgamode[i] != NULL ) {
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505 SDL_free(SDL_vgamode[i]);
0
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506 SDL_vgamode[i] = NULL;
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507 }
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508 }
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509 if ( this->screen && (this->screen->flags & SDL_HWSURFACE) ) {
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510 /* Direct screen access, no memory buffer */
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511 this->screen->pixels = NULL;
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512 }
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513 }
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514