Mercurial > sdl-ios-xcode
annotate src/video/dga/SDL_dgavideo.c @ 1784:45669d4efd02
Disable the screensaver in DGA mode, which is even more important than X11...
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 08 May 2006 06:54:20 +0000 |
| parents | 3ba88cb7eb1b |
| children | dcec47a019e2 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 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. |
| 0 | 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. |
| 0 | 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 |
| 0 | 18 |
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19 Sam Lantinga |
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20 slouken@libsdl.org |
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21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* DGA 2.0 based SDL video driver implementation. | |
| 25 */ | |
| 26 | |
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27 #include <stdio.h> |
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28 |
| 0 | 29 #include <X11/Xlib.h> |
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30 #include "../Xext/extensions/xf86dga.h" |
| 0 | 31 |
| 32 #include "SDL_video.h" | |
| 33 #include "SDL_mouse.h" | |
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34 #include "../SDL_sysvideo.h" |
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35 #include "../SDL_pixels_c.h" |
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36 #include "../../events/SDL_events_c.h" |
| 0 | 37 #include "SDL_dgavideo.h" |
| 38 #include "SDL_dgamouse_c.h" | |
| 39 #include "SDL_dgaevents_c.h" | |
| 40 | |
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41 /* get function pointers... */ |
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42 #include "../x11/SDL_x11dyn.h" |
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43 |
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44 /* Heheh we're using X11 event code */ |
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45 extern void X11_SaveScreenSaver(Display *display, int *saved_timeout, BOOL *dpms); |
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46 extern void X11_DisableScreenSaver(Display *display); |
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47 extern void X11_RestoreScreenSaver(Display *display, int saved_timeout, BOOL dpms); |
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48 |
| 0 | 49 /* Initialization/Query functions */ |
| 50 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat); | |
| 51 static SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); | |
| 52 static SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); | |
| 53 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, | |
| 54 SDL_Color *colors); | |
| 55 static int DGA_SetGammaRamp(_THIS, Uint16 *ramp); | |
| 56 static void DGA_VideoQuit(_THIS); | |
| 57 | |
| 58 /* Hardware surface functions */ | |
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59 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size); |
| 0 | 60 static void DGA_FreeHWSurfaces(_THIS); |
| 61 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface); | |
| 62 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color); | |
| 63 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst); | |
| 64 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface); | |
| 65 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface); | |
| 66 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface); | |
| 67 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface); | |
| 68 | |
| 69 /* DGA driver bootstrap functions */ | |
| 70 | |
| 71 static int DGA_Available(void) | |
| 72 { | |
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73 const char *display = NULL; |
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74 Display *dpy = NULL; |
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75 int available = 0; |
| 0 | 76 |
| 77 /* The driver is available is available if the display is local | |
| 78 and the DGA 2.0+ extension is available, and we can map mem. | |
| 79 */ | |
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80 if ( SDL_X11_LoadSymbols() ) { |
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81 if ( (SDL_strncmp(XDisplayName(display), ":", 1) == 0) || |
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82 (SDL_strncmp(XDisplayName(display), "unix:", 5) == 0) ) { |
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83 dpy = XOpenDisplay(display); |
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84 if ( dpy ) { |
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85 int events, errors, major, minor; |
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86 |
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87 if ( SDL_NAME(XDGAQueryExtension)(dpy, &events, &errors) && |
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88 SDL_NAME(XDGAQueryVersion)(dpy, &major, &minor) ) { |
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89 int screen; |
| 0 | 90 |
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91 screen = DefaultScreen(dpy); |
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92 if ( (major >= 2) && |
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93 SDL_NAME(XDGAOpenFramebuffer)(dpy, screen) ) { |
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94 available = 1; |
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95 SDL_NAME(XDGACloseFramebuffer)(dpy, screen); |
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96 } |
| 0 | 97 } |
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98 XCloseDisplay(dpy); |
| 0 | 99 } |
| 100 } | |
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101 SDL_X11_UnloadSymbols(); |
| 0 | 102 } |
| 103 return(available); | |
| 104 } | |
| 105 | |
| 106 static void DGA_DeleteDevice(SDL_VideoDevice *device) | |
| 107 { | |
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108 if (device != NULL) { |
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109 SDL_free(device->hidden); |
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110 SDL_free(device); |
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111 SDL_X11_UnloadSymbols(); |
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112 } |
| 0 | 113 } |
| 114 | |
| 115 static SDL_VideoDevice *DGA_CreateDevice(int devindex) | |
| 116 { | |
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117 SDL_VideoDevice *device = NULL; |
| 0 | 118 |
| 119 /* Initialize all variables that we clean on shutdown */ | |
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120 if (SDL_X11_LoadSymbols()) { |
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121 device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
| 0 | 122 if ( device ) { |
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123 SDL_memset(device, 0, (sizeof *device)); |
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124 device->hidden = (struct SDL_PrivateVideoData *) |
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125 SDL_malloc((sizeof *device->hidden)); |
| 0 | 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 SDL_free(device); |
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131 } |
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132 SDL_X11_UnloadSymbols(); |
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133 return(0); |
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134 } |
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135 SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
| 0 | 136 |
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137 /* Set the function pointers */ |
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138 device->VideoInit = DGA_VideoInit; |
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139 device->ListModes = DGA_ListModes; |
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140 device->SetVideoMode = DGA_SetVideoMode; |
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141 device->SetColors = DGA_SetColors; |
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142 device->UpdateRects = NULL; |
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143 device->VideoQuit = DGA_VideoQuit; |
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144 device->AllocHWSurface = DGA_AllocHWSurface; |
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145 device->CheckHWBlit = DGA_CheckHWBlit; |
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146 device->FillHWRect = DGA_FillHWRect; |
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147 device->SetHWColorKey = NULL; |
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148 device->SetHWAlpha = NULL; |
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149 device->LockHWSurface = DGA_LockHWSurface; |
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150 device->UnlockHWSurface = DGA_UnlockHWSurface; |
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151 device->FlipHWSurface = DGA_FlipHWSurface; |
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152 device->FreeHWSurface = DGA_FreeHWSurface; |
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153 device->SetGammaRamp = DGA_SetGammaRamp; |
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154 device->GetGammaRamp = NULL; |
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155 device->SetCaption = NULL; |
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156 device->SetIcon = NULL; |
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157 device->IconifyWindow = NULL; |
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158 device->GrabInput = NULL; |
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159 device->GetWMInfo = NULL; |
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160 device->InitOSKeymap = DGA_InitOSKeymap; |
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161 device->PumpEvents = DGA_PumpEvents; |
| 0 | 162 |
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163 device->free = DGA_DeleteDevice; |
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164 } |
| 0 | 165 |
| 166 return device; | |
| 167 } | |
| 168 | |
| 169 VideoBootStrap DGA_bootstrap = { | |
| 170 "dga", "XFree86 DGA 2.0", | |
| 171 DGA_Available, DGA_CreateDevice | |
| 172 }; | |
| 173 | |
| 174 static int DGA_AddMode(_THIS, int bpp, int w, int h) | |
| 175 { | |
| 176 SDL_Rect *mode; | |
| 177 int i, index; | |
| 178 int next_mode; | |
| 179 | |
| 180 /* Check to see if we already have this mode */ | |
| 181 if ( bpp < 8 ) { /* Not supported */ | |
| 182 return(0); | |
| 183 } | |
| 184 index = ((bpp+7)/8)-1; | |
| 185 for ( i=0; i<SDL_nummodes[index]; ++i ) { | |
| 186 mode = SDL_modelist[index][i]; | |
| 187 if ( (mode->w == w) && (mode->h == h) ) { | |
| 188 return(0); | |
| 189 } | |
| 190 } | |
| 191 | |
| 192 /* Set up the new video mode rectangle */ | |
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193 mode = (SDL_Rect *)SDL_malloc(sizeof *mode); |
| 0 | 194 if ( mode == NULL ) { |
| 195 SDL_OutOfMemory(); | |
| 196 return(-1); | |
| 197 } | |
| 198 mode->x = 0; | |
| 199 mode->y = 0; | |
| 200 mode->w = w; | |
| 201 mode->h = h; | |
| 202 | |
| 203 /* Allocate the new list of modes, and fill in the new mode */ | |
| 204 next_mode = SDL_nummodes[index]; | |
| 205 SDL_modelist[index] = (SDL_Rect **) | |
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206 SDL_realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *)); |
| 0 | 207 if ( SDL_modelist[index] == NULL ) { |
| 208 SDL_OutOfMemory(); | |
| 209 SDL_nummodes[index] = 0; | |
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210 SDL_free(mode); |
| 0 | 211 return(-1); |
| 212 } | |
| 213 SDL_modelist[index][next_mode] = mode; | |
| 214 SDL_modelist[index][next_mode+1] = NULL; | |
| 215 SDL_nummodes[index]++; | |
| 216 | |
| 217 return(0); | |
| 218 } | |
| 219 | |
| 220 /* This whole function is a hack. :) */ | |
| 221 static Uint32 get_video_size(_THIS) | |
| 222 { | |
| 223 /* This is a non-exported function from libXxf86dga.a */ | |
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224 extern unsigned char *SDL_NAME(XDGAGetMappedMemory)(int screen); |
| 0 | 225 FILE *proc; |
| 226 unsigned long mem; | |
| 227 unsigned start, stop; | |
| 228 char line[BUFSIZ]; | |
| 229 Uint32 size; | |
| 230 | |
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231 mem = (unsigned long)SDL_NAME(XDGAGetMappedMemory)(DGA_Screen); |
| 0 | 232 size = 0; |
| 233 proc = fopen("/proc/self/maps", "r"); | |
| 234 if ( proc ) { | |
| 235 while ( fgets(line, sizeof(line)-1, proc) ) { | |
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236 SDL_sscanf(line, "%x-%x", &start, &stop); |
| 0 | 237 if ( start == mem ) { |
| 238 size = (Uint32)((stop-start)/1024); | |
| 239 break; | |
| 240 } | |
| 241 } | |
| 242 fclose(proc); | |
| 243 } | |
| 244 return(size); | |
| 245 } | |
| 246 | |
| 247 #ifdef DGA_DEBUG | |
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248 static void PrintMode(SDL_NAME(XDGAMode) *mode) |
| 0 | 249 { |
| 250 printf("Mode: %s (%dx%d) at %d bpp (%f refresh, %d pitch) num: %d\n", | |
| 251 mode->name, | |
| 252 mode->viewportWidth, mode->viewportHeight, | |
| 253 mode->depth == 24 ? mode->bitsPerPixel : mode->depth, | |
| 254 mode->verticalRefresh, mode->bytesPerScanline, mode->num); | |
| 255 printf("\tRGB: 0x%8.8x 0x%8.8x 0x%8.8x (%d - %s)\n", | |
| 256 mode->redMask, mode->greenMask, mode->blueMask, | |
| 257 mode->visualClass, | |
| 258 mode->visualClass == TrueColor ? "truecolor" : | |
| 259 mode->visualClass == DirectColor ? "directcolor" : | |
| 260 mode->visualClass == PseudoColor ? "pseudocolor" : "unknown"); | |
| 261 printf("\tFlags: "); | |
| 262 if ( mode->flags & XDGAConcurrentAccess ) | |
| 263 printf(" XDGAConcurrentAccess"); | |
| 264 if ( mode->flags & XDGASolidFillRect ) | |
| 265 printf(" XDGASolidFillRect"); | |
| 266 if ( mode->flags & XDGABlitRect ) | |
| 267 printf(" XDGABlitRect"); | |
| 268 if ( mode->flags & XDGABlitTransRect ) | |
| 269 printf(" XDGABlitTransRect"); | |
| 270 if ( mode->flags & XDGAPixmap ) | |
| 271 printf(" XDGAPixmap"); | |
| 272 if ( mode->flags & XDGAInterlaced ) | |
| 273 printf(" XDGAInterlaced"); | |
| 274 if ( mode->flags & XDGADoublescan ) | |
| 275 printf(" XDGADoublescan"); | |
| 276 if ( mode->viewportFlags & XDGAFlipRetrace ) | |
| 277 printf(" XDGAFlipRetrace"); | |
| 278 if ( mode->viewportFlags & XDGAFlipImmediate ) | |
| 279 printf(" XDGAFlipImmediate"); | |
| 280 printf("\n"); | |
| 281 } | |
| 282 #endif /* DGA_DEBUG */ | |
| 283 | |
| 284 static int cmpmodes(const void *va, const void *vb) | |
| 285 { | |
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286 const SDL_NAME(XDGAMode) *a = (const SDL_NAME(XDGAMode) *)va; |
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287 const SDL_NAME(XDGAMode) *b = (const SDL_NAME(XDGAMode) *)vb; |
| 0 | 288 |
| 289 /* Prefer DirectColor visuals for otherwise equal modes */ | |
| 290 if ( (a->viewportWidth == b->viewportWidth) && | |
| 291 (b->viewportHeight == a->viewportHeight) ) { | |
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292 if ( a->visualClass == DirectColor ) |
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293 return -1; |
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294 if ( b->visualClass == DirectColor ) |
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295 return 1; |
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296 return 0; |
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297 } else if ( a->viewportWidth == b->viewportWidth ) { |
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298 return b->viewportHeight - a->viewportHeight; |
| 0 | 299 } else { |
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300 return b->viewportWidth - a->viewportWidth; |
| 0 | 301 } |
| 302 } | |
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303 static void UpdateHWInfo(_THIS, SDL_NAME(XDGAMode) *mode) |
| 0 | 304 { |
| 305 this->info.wm_available = 0; | |
| 306 this->info.hw_available = 1; | |
| 307 if ( mode->flags & XDGABlitRect ) { | |
| 308 this->info.blit_hw = 1; | |
| 309 } else { | |
| 310 this->info.blit_hw = 0; | |
| 311 } | |
| 312 if ( mode->flags & XDGABlitTransRect ) { | |
| 313 this->info.blit_hw_CC = 1; | |
| 314 } else { | |
| 315 this->info.blit_hw_CC = 0; | |
| 316 } | |
| 317 if ( mode->flags & XDGASolidFillRect ) { | |
| 318 this->info.blit_fill = 1; | |
| 319 } else { | |
| 320 this->info.blit_fill = 0; | |
| 321 } | |
| 322 this->info.video_mem = get_video_size(this); | |
| 323 } | |
| 324 | |
| 325 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat) | |
| 326 { | |
| 327 const char *display; | |
| 328 int event_base, error_base; | |
| 329 int major_version, minor_version; | |
| 330 Visual *visual; | |
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331 SDL_NAME(XDGAMode) *modes; |
| 0 | 332 int i, num_modes; |
| 333 | |
| 334 /* Open the X11 display */ | |
| 335 display = NULL; /* Get it from DISPLAY environment variable */ | |
| 336 | |
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337 DGA_Display = XOpenDisplay(display); |
| 0 | 338 if ( DGA_Display == NULL ) { |
| 339 SDL_SetError("Couldn't open X11 display"); | |
| 340 return(-1); | |
| 341 } | |
| 342 | |
| 343 /* Check for the DGA extension */ | |
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344 if ( ! SDL_NAME(XDGAQueryExtension)(DGA_Display, &event_base, &error_base) || |
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345 ! SDL_NAME(XDGAQueryVersion)(DGA_Display, &major_version, &minor_version) ) { |
| 0 | 346 SDL_SetError("DGA extension not available"); |
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347 XCloseDisplay(DGA_Display); |
| 0 | 348 return(-1); |
| 349 } | |
| 350 if ( major_version < 2 ) { | |
| 351 SDL_SetError("DGA driver requires DGA 2.0 or newer"); | |
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352 XCloseDisplay(DGA_Display); |
| 0 | 353 return(-1); |
| 354 } | |
| 355 DGA_event_base = event_base; | |
| 356 | |
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357 /* Determine the current screen size */ |
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358 this->info.current_w = DisplayWidth(DGA_Display, DGA_Screen); |
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359 this->info.current_h = DisplayHeight(DGA_Display, DGA_Screen); |
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360 |
| 0 | 361 /* Determine the current screen depth */ |
| 362 visual = DefaultVisual(DGA_Display, DGA_Screen); | |
| 363 { | |
| 364 XPixmapFormatValues *pix_format; | |
| 365 int i, num_formats; | |
| 366 | |
| 367 vformat->BitsPerPixel = DefaultDepth(DGA_Display, DGA_Screen); | |
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368 pix_format = XListPixmapFormats(DGA_Display, &num_formats); |
| 0 | 369 if ( pix_format == NULL ) { |
| 370 SDL_SetError("Couldn't determine screen formats"); | |
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371 XCloseDisplay(DGA_Display); |
| 0 | 372 return(-1); |
| 373 } | |
| 374 for ( i=0; i<num_formats; ++i ) { | |
| 375 if ( vformat->BitsPerPixel == pix_format[i].depth ) | |
| 376 break; | |
| 377 } | |
| 378 if ( i != num_formats ) | |
| 379 vformat->BitsPerPixel = pix_format[i].bits_per_pixel; | |
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380 XFree((char *)pix_format); |
| 0 | 381 } |
| 382 if ( vformat->BitsPerPixel > 8 ) { | |
| 383 vformat->Rmask = visual->red_mask; | |
| 384 vformat->Gmask = visual->green_mask; | |
| 385 vformat->Bmask = visual->blue_mask; | |
| 386 } | |
| 387 | |
| 388 /* Open access to the framebuffer */ | |
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389 if ( ! SDL_NAME(XDGAOpenFramebuffer)(DGA_Display, DGA_Screen) ) { |
| 0 | 390 SDL_SetError("Unable to map the video memory"); |
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391 XCloseDisplay(DGA_Display); |
| 0 | 392 return(-1); |
| 393 } | |
| 394 | |
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395 /* Save DPMS and screensaver settings */ |
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396 X11_SaveScreenSaver(DGA_Display, &screensaver_timeout, &dpms_enabled); |
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397 X11_DisableScreenSaver(DGA_Display); |
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398 |
| 0 | 399 /* Query for the list of available video modes */ |
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400 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
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401 SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes); |
| 0 | 402 for ( i=0; i<num_modes; ++i ) { |
| 403 #ifdef DGA_DEBUG | |
| 404 PrintMode(&modes[i]); | |
| 405 #endif | |
| 406 if ( (modes[i].visualClass == PseudoColor) || | |
| 407 (modes[i].visualClass == DirectColor) || | |
| 408 (modes[i].visualClass == TrueColor) ) { | |
| 409 DGA_AddMode(this, modes[i].bitsPerPixel, | |
| 410 modes[i].viewportWidth, | |
| 411 modes[i].viewportHeight); | |
| 412 } | |
| 413 } | |
| 414 UpdateHWInfo(this, modes); | |
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415 XFree(modes); |
| 0 | 416 |
| 417 /* Create the hardware surface lock mutex */ | |
| 418 hw_lock = SDL_CreateMutex(); | |
| 419 if ( hw_lock == NULL ) { | |
| 420 SDL_SetError("Unable to create lock mutex"); | |
| 421 DGA_VideoQuit(this); | |
| 422 return(-1); | |
| 423 } | |
| 424 | |
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425 #ifdef LOCK_DGA_DISPLAY |
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426 /* Create the event lock so we're thread-safe.. :-/ */ |
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427 event_lock = SDL_CreateMutex(); |
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428 #endif /* LOCK_DGA_DISPLAY */ |
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429 |
| 0 | 430 /* We're done! */ |
| 431 return(0); | |
| 432 } | |
| 433 | |
| 434 SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) | |
| 435 { | |
| 436 return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); | |
| 437 } | |
| 438 | |
| 439 /* Various screen update functions available */ | |
| 440 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); | |
| 441 | |
| 442 SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, | |
| 443 int width, int height, int bpp, Uint32 flags) | |
| 444 { | |
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445 SDL_NAME(XDGAMode) *modes; |
| 0 | 446 int i, num_modes; |
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447 SDL_NAME(XDGADevice) *mode; |
| 0 | 448 int screen_len; |
| 449 Uint8 *surfaces_mem; | |
| 450 int surfaces_len; | |
| 451 | |
| 452 /* Free any previous colormap */ | |
| 453 if ( DGA_colormap ) { | |
|
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454 XFreeColormap(DGA_Display, DGA_colormap); |
| 0 | 455 DGA_colormap = 0; |
| 456 } | |
| 457 | |
| 458 /* Search for a matching video mode */ | |
|
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459 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
|
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460 SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes); |
| 0 | 461 for ( i=0; i<num_modes; ++i ) { |
| 462 int depth; | |
| 463 | |
| 464 | |
| 465 depth = modes[i].depth; | |
| 466 if ( depth == 24 ) { /* Distinguish between 24 and 32 bpp */ | |
| 467 depth = modes[i].bitsPerPixel; | |
| 468 } | |
| 469 if ( (depth == bpp) && | |
| 470 (modes[i].viewportWidth == width) && | |
| 471 (modes[i].viewportHeight == height) && | |
| 472 ((modes[i].visualClass == PseudoColor) || | |
| 473 (modes[i].visualClass == DirectColor) || | |
| 474 (modes[i].visualClass == TrueColor)) ) { | |
| 475 break; | |
| 476 } | |
| 477 } | |
| 478 if ( i == num_modes ) { | |
| 479 SDL_SetError("No matching video mode found"); | |
| 480 return(NULL); | |
| 481 } | |
| 482 | |
| 483 /* Set the video mode */ | |
|
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484 mode = SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, modes[i].num); |
|
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485 XFree(modes); |
| 0 | 486 if ( mode == NULL ) { |
| 487 SDL_SetError("Unable to switch to requested mode"); | |
| 488 return(NULL); | |
| 489 } | |
|
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490 DGA_visualClass = mode->mode.visualClass; |
| 0 | 491 memory_base = (Uint8 *)mode->data; |
| 492 memory_pitch = mode->mode.bytesPerScanline; | |
| 493 | |
| 494 /* Set up the new mode framebuffer */ | |
| 495 current->flags = (SDL_FULLSCREEN|SDL_HWSURFACE); | |
| 496 current->w = mode->mode.viewportWidth; | |
| 497 current->h = mode->mode.viewportHeight; | |
| 498 current->pitch = memory_pitch; | |
| 499 current->pixels = memory_base; | |
| 500 if ( ! SDL_ReallocFormat(current, mode->mode.bitsPerPixel, | |
| 501 mode->mode.redMask, | |
| 502 mode->mode.greenMask, | |
| 503 mode->mode.blueMask, 0) ) { | |
| 504 return(NULL); | |
| 505 } | |
| 506 screen_len = current->h*current->pitch; | |
| 507 | |
| 508 /* Create a colormap if necessary */ | |
| 509 if ( (DGA_visualClass == PseudoColor) || | |
| 510 (DGA_visualClass == DirectColor) ) { | |
|
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511 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
| 0 | 512 mode, AllocAll); |
| 513 if ( DGA_visualClass == PseudoColor ) { | |
| 514 current->flags |= SDL_HWPALETTE; | |
| 515 } else { | |
| 516 /* Initialize the colormap to the identity mapping */ | |
| 517 SDL_GetGammaRamp(0, 0, 0); | |
| 518 this->screen = current; | |
| 519 DGA_SetGammaRamp(this, this->gamma); | |
| 520 this->screen = NULL; | |
| 521 } | |
| 522 } else { | |
|
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523 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
| 0 | 524 mode, AllocNone); |
| 525 } | |
|
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526 SDL_NAME(XDGAInstallColormap)(DGA_Display, DGA_Screen, DGA_colormap); |
| 0 | 527 |
| 528 /* Update the hardware capabilities */ | |
| 529 UpdateHWInfo(this, &mode->mode); | |
| 530 | |
| 531 /* Set up the information for hardware surfaces */ | |
| 532 surfaces_mem = (Uint8 *)current->pixels + screen_len; | |
| 533 surfaces_len = (mode->mode.imageHeight*current->pitch - screen_len); | |
| 534 | |
| 535 /* Update for double-buffering, if we can */ | |
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536 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, 0, 0, XDGAFlipRetrace); |
| 0 | 537 if ( flags & SDL_DOUBLEBUF ) { |
| 538 if ( mode->mode.imageHeight >= (current->h*2) ) { | |
| 539 current->flags |= SDL_DOUBLEBUF; | |
| 540 flip_page = 0; | |
| 541 flip_yoffset[0] = 0; | |
| 542 flip_yoffset[1] = current->h; | |
| 543 flip_address[0] = memory_base; | |
| 544 flip_address[1] = memory_base+screen_len; | |
| 545 surfaces_mem += screen_len; | |
| 546 surfaces_len -= screen_len; | |
| 547 } | |
| 548 } | |
| 549 | |
| 550 /* Allocate memory tracking for hardware surfaces */ | |
| 551 DGA_FreeHWSurfaces(this); | |
| 552 if ( surfaces_len < 0 ) { | |
| 553 surfaces_len = 0; | |
| 554 } | |
|
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555 DGA_InitHWSurfaces(this, current, surfaces_mem, surfaces_len); |
| 0 | 556 |
|
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557 /* Expose the back buffer as surface memory */ |
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558 if ( current->flags & SDL_DOUBLEBUF ) { |
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559 this->screen = current; |
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560 DGA_FlipHWSurface(this, current); |
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561 this->screen = NULL; |
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562 } |
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563 |
| 0 | 564 /* Set the update rectangle function */ |
| 565 this->UpdateRects = DGA_DirectUpdate; | |
| 566 | |
| 567 /* Enable mouse and keyboard support */ | |
| 568 { long input_mask; | |
| 569 input_mask = (KeyPressMask | KeyReleaseMask); | |
| 570 input_mask |= (ButtonPressMask | ButtonReleaseMask); | |
| 571 input_mask |= PointerMotionMask; | |
|
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572 SDL_NAME(XDGASelectInput)(DGA_Display, DGA_Screen, input_mask); |
| 0 | 573 } |
| 574 | |
| 575 /* We're done */ | |
| 576 return(current); | |
| 577 } | |
| 578 | |
| 579 #ifdef DGA_DEBUG | |
| 580 static void DGA_DumpHWSurfaces(_THIS) | |
| 581 { | |
| 582 vidmem_bucket *bucket; | |
| 583 | |
| 584 printf("Memory left: %d (%d total)\n", surfaces_memleft, surfaces_memtotal); | |
| 585 printf("\n"); | |
| 586 printf(" Base Size\n"); | |
| 587 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { | |
| 588 printf("Bucket: %p, %d (%s)\n", bucket->base, bucket->size, bucket->used ? "used" : "free"); | |
| 589 if ( bucket->prev ) { | |
| 590 if ( bucket->base != bucket->prev->base+bucket->prev->size ) { | |
| 591 printf("Warning, corrupt bucket list! (prev)\n"); | |
| 592 } | |
| 593 } else { | |
| 594 if ( bucket != &surfaces ) { | |
| 595 printf("Warning, corrupt bucket list! (!prev)\n"); | |
| 596 } | |
| 597 } | |
| 598 if ( bucket->next ) { | |
| 599 if ( bucket->next->base != bucket->base+bucket->size ) { | |
| 600 printf("Warning, corrupt bucket list! (next)\n"); | |
| 601 } | |
| 602 } | |
| 603 } | |
| 604 printf("\n"); | |
| 605 } | |
| 606 #endif | |
| 607 | |
|
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608 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size) |
| 0 | 609 { |
|
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610 vidmem_bucket *bucket; |
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611 |
| 0 | 612 surfaces_memtotal = size; |
| 613 surfaces_memleft = size; | |
|
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614 |
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615 if ( surfaces_memleft > 0 ) { |
|
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616 bucket = (vidmem_bucket *)SDL_malloc(sizeof(*bucket)); |
|
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617 if ( bucket == NULL ) { |
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618 SDL_OutOfMemory(); |
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619 return(-1); |
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620 } |
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621 bucket->prev = &surfaces; |
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622 bucket->used = 0; |
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623 bucket->dirty = 0; |
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624 bucket->base = base; |
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625 bucket->size = size; |
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626 bucket->next = NULL; |
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627 } else { |
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628 bucket = NULL; |
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629 } |
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630 |
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631 surfaces.prev = NULL; |
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632 surfaces.used = 1; |
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633 surfaces.dirty = 0; |
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634 surfaces.base = screen->pixels; |
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635 surfaces.size = (unsigned int)((long)base - (long)surfaces.base); |
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636 surfaces.next = bucket; |
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637 screen->hwdata = (struct private_hwdata *)&surfaces; |
| 0 | 638 return(0); |
| 639 } | |
| 640 static void DGA_FreeHWSurfaces(_THIS) | |
| 641 { | |
| 642 vidmem_bucket *bucket, *freeable; | |
| 643 | |
| 644 bucket = surfaces.next; | |
| 645 while ( bucket ) { | |
| 646 freeable = bucket; | |
| 647 bucket = bucket->next; | |
|
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648 SDL_free(freeable); |
| 0 | 649 } |
| 650 surfaces.next = NULL; | |
| 651 } | |
| 652 | |
|
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653 static __inline__ void DGA_AddBusySurface(SDL_Surface *surface) |
|
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654 { |
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655 ((vidmem_bucket *)surface->hwdata)->dirty = 1; |
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656 } |
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657 |
|
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658 static __inline__ int DGA_IsSurfaceBusy(SDL_Surface *surface) |
|
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659 { |
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660 return ((vidmem_bucket *)surface->hwdata)->dirty; |
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661 } |
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662 |
|
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663 static __inline__ void DGA_WaitBusySurfaces(_THIS) |
|
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664 { |
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665 vidmem_bucket *bucket; |
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666 |
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667 /* Wait for graphic operations to complete */ |
|
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668 SDL_NAME(XDGASync)(DGA_Display, DGA_Screen); |
|
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669 |
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670 /* Clear all surface dirty bits */ |
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671 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
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672 bucket->dirty = 0; |
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673 } |
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674 } |
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675 |
| 0 | 676 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface) |
| 677 { | |
| 678 vidmem_bucket *bucket; | |
| 679 int size; | |
| 680 int extra; | |
|
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681 int retval = 0; |
| 0 | 682 |
| 683 /* Temporarily, we only allow surfaces the same width as display. | |
| 684 Some blitters require the pitch between two hardware surfaces | |
| 685 to be the same. Others have interesting alignment restrictions. | |
| 686 */ | |
| 687 if ( surface->pitch > SDL_VideoSurface->pitch ) { | |
| 688 SDL_SetError("Surface requested wider than screen"); | |
| 689 return(-1); | |
| 690 } | |
| 691 surface->pitch = SDL_VideoSurface->pitch; | |
| 692 size = surface->h * surface->pitch; | |
| 693 #ifdef DGA_DEBUG | |
| 694 fprintf(stderr, "Allocating bucket of %d bytes\n", size); | |
| 695 #endif | |
|
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696 LOCK_DISPLAY(); |
| 0 | 697 |
| 698 /* Quick check for available mem */ | |
| 699 if ( size > surfaces_memleft ) { | |
| 700 SDL_SetError("Not enough video memory"); | |
|
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701 retval = -1; |
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702 goto done; |
| 0 | 703 } |
| 704 | |
| 705 /* Search for an empty bucket big enough */ | |
| 706 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { | |
| 707 if ( ! bucket->used && (size <= bucket->size) ) { | |
| 708 break; | |
| 709 } | |
| 710 } | |
| 711 if ( bucket == NULL ) { | |
| 712 SDL_SetError("Video memory too fragmented"); | |
|
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713 retval = -1; |
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|
714 goto done; |
| 0 | 715 } |
| 716 | |
| 717 /* Create a new bucket for left-over memory */ | |
| 718 extra = (bucket->size - size); | |
| 719 if ( extra ) { | |
| 720 vidmem_bucket *newbucket; | |
| 721 | |
| 722 #ifdef DGA_DEBUG | |
| 723 fprintf(stderr, "Adding new free bucket of %d bytes\n", extra); | |
| 724 #endif | |
|
1336
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Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
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|
725 newbucket = (vidmem_bucket *)SDL_malloc(sizeof(*newbucket)); |
| 0 | 726 if ( newbucket == NULL ) { |
| 727 SDL_OutOfMemory(); | |
|
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DGA video driver is now thread-safe
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|
728 retval = -1; |
|
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|
729 goto done; |
| 0 | 730 } |
| 731 newbucket->prev = bucket; | |
| 732 newbucket->used = 0; | |
| 733 newbucket->base = bucket->base+size; | |
| 734 newbucket->size = extra; | |
| 735 newbucket->next = bucket->next; | |
| 736 if ( bucket->next ) { | |
| 737 bucket->next->prev = newbucket; | |
| 738 } | |
| 739 bucket->next = newbucket; | |
| 740 } | |
| 741 | |
| 742 /* Set the current bucket values and return it! */ | |
| 743 bucket->used = 1; | |
| 744 bucket->size = size; | |
|
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|
745 bucket->dirty = 0; |
| 0 | 746 #ifdef DGA_DEBUG |
| 747 fprintf(stderr, "Allocated %d bytes at %p\n", bucket->size, bucket->base); | |
| 748 #endif | |
| 749 surfaces_memleft -= size; | |
| 750 surface->flags |= SDL_HWSURFACE; | |
| 751 surface->pixels = bucket->base; | |
|
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|
752 surface->hwdata = (struct private_hwdata *)bucket; |
|
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|
753 done: |
|
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diff
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|
754 UNLOCK_DISPLAY(); |
|
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diff
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|
755 return(retval); |
| 0 | 756 } |
| 757 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface) | |
| 758 { | |
| 759 vidmem_bucket *bucket, *freeable; | |
| 760 | |
| 761 /* Look for the bucket in the current list */ | |
|
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|
762 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
|
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|
763 if ( bucket == (vidmem_bucket *)surface->hwdata ) { |
|
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|
764 break; |
|
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|
765 } |
| 0 | 766 } |
|
102
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|
767 if ( bucket && bucket->used ) { |
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|
768 /* Add the memory back to the total */ |
| 0 | 769 #ifdef DGA_DEBUG |
| 770 printf("Freeing bucket of %d bytes\n", bucket->size); | |
| 771 #endif | |
|
102
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772 surfaces_memleft += bucket->size; |
| 0 | 773 |
|
102
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|
774 /* Can we merge the space with surrounding buckets? */ |
|
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|
775 bucket->used = 0; |
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776 if ( bucket->next && ! bucket->next->used ) { |
| 0 | 777 #ifdef DGA_DEBUG |
| 778 printf("Merging with next bucket, for %d total bytes\n", bucket->size+bucket->next->size); | |
| 779 #endif | |
|
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|
780 freeable = bucket->next; |
|
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|
781 bucket->size += bucket->next->size; |
|
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|
782 bucket->next = bucket->next->next; |
|
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|
783 if ( bucket->next ) { |
|
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|
784 bucket->next->prev = bucket; |
|
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|
785 } |
|
1336
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Sam Lantinga <slouken@libsdl.org>
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|
786 SDL_free(freeable); |
| 0 | 787 } |
|
102
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|
788 if ( bucket->prev && ! bucket->prev->used ) { |
| 0 | 789 #ifdef DGA_DEBUG |
| 790 printf("Merging with previous bucket, for %d total bytes\n", bucket->prev->size+bucket->size); | |
| 791 #endif | |
|
102
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parents:
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diff
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|
792 freeable = bucket; |
|
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Don't crash if freeing a hardware surface after the video mode has been
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|
793 bucket->prev->size += bucket->size; |
|
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Don't crash if freeing a hardware surface after the video mode has been
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diff
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|
794 bucket->prev->next = bucket->next; |
|
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|
795 if ( bucket->next ) { |
|
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Sam Lantinga <slouken@lokigames.com>
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|
796 bucket->next->prev = bucket->prev; |
|
9162d62280b5
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Sam Lantinga <slouken@lokigames.com>
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diff
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|
797 } |
|
1336
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Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
798 SDL_free(freeable); |
| 0 | 799 } |
| 800 } | |
| 801 surface->pixels = NULL; | |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
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|
802 surface->hwdata = NULL; |
| 0 | 803 } |
| 804 | |
|
105
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|
805 static __inline__ void DGA_dst_to_xy(_THIS, SDL_Surface *dst, int *x, int *y) |
| 0 | 806 { |
| 807 *x = (long)((Uint8 *)dst->pixels - memory_base)%memory_pitch; | |
| 808 *y = (long)((Uint8 *)dst->pixels - memory_base)/memory_pitch; | |
| 809 } | |
| 810 | |
| 811 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) | |
| 812 { | |
| 813 int x, y; | |
| 814 unsigned int w, h; | |
| 815 | |
| 816 /* Don't fill the visible part of the screen, wait until flipped */ | |
|
101
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diff
changeset
|
817 LOCK_DISPLAY(); |
| 0 | 818 if ( was_flipped && (dst == this->screen) ) { |
|
292
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|
819 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 820 /* Keep waiting for the hardware ... */ ; |
| 821 was_flipped = 0; | |
| 822 } | |
|
105
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|
823 DGA_dst_to_xy(this, dst, &x, &y); |
| 0 | 824 x += rect->x; |
| 825 y += rect->y; | |
| 826 w = rect->w; | |
| 827 h = rect->h; | |
| 828 #if 0 | |
| 829 printf("Hardware accelerated rectangle fill: %dx%d at %d,%d\n", w, h, x, y); | |
| 830 #endif | |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
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diff
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|
831 SDL_NAME(XDGAFillRectangle)(DGA_Display, DGA_Screen, x, y, w, h, color); |
|
540
4bcfb93e0dfe
Greatly improved X11 DGA video speed (thanks Cezary!)
Sam Lantinga <slouken@libsdl.org>
parents:
462
diff
changeset
|
832 if ( !(this->screen->flags & SDL_DOUBLEBUF) ) { |
|
1575
3ba88cb7eb1b
Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents:
1545
diff
changeset
|
833 XFlush(DGA_Display); |
|
540
4bcfb93e0dfe
Greatly improved X11 DGA video speed (thanks Cezary!)
Sam Lantinga <slouken@libsdl.org>
parents:
462
diff
changeset
|
834 } |
|
105
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Sam Lantinga <slouken@lokigames.com>
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diff
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|
835 DGA_AddBusySurface(dst); |
|
101
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91
diff
changeset
|
836 UNLOCK_DISPLAY(); |
| 0 | 837 return(0); |
| 838 } | |
| 839 | |
| 840 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, | |
| 841 SDL_Surface *dst, SDL_Rect *dstrect) | |
| 842 { | |
| 843 SDL_VideoDevice *this; | |
| 844 int srcx, srcy; | |
| 845 int dstx, dsty; | |
| 846 unsigned int w, h; | |
| 847 | |
| 848 this = current_video; | |
| 849 /* Don't blit to the visible part of the screen, wait until flipped */ | |
|
101
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91
diff
changeset
|
850 LOCK_DISPLAY(); |
| 0 | 851 if ( was_flipped && (dst == this->screen) ) { |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
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|
852 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 853 /* Keep waiting for the hardware ... */ ; |
| 854 was_flipped = 0; | |
| 855 } | |
|
105
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diff
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|
856 DGA_dst_to_xy(this, src, &srcx, &srcy); |
| 0 | 857 srcx += srcrect->x; |
| 858 srcy += srcrect->y; | |
|
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|
859 DGA_dst_to_xy(this, dst, &dstx, &dsty); |
| 0 | 860 dstx += dstrect->x; |
| 861 dsty += dstrect->y; | |
| 862 w = srcrect->w; | |
| 863 h = srcrect->h; | |
| 864 #if 0 | |
| 865 printf("Blitting %dx%d from %d,%d to %d,%d\n", w, h, srcx, srcy, dstx, dsty); | |
| 866 #endif | |
| 867 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
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diff
changeset
|
868 SDL_NAME(XDGACopyTransparentArea)(DGA_Display, DGA_Screen, |
| 0 | 869 srcx, srcy, w, h, dstx, dsty, src->format->colorkey); |
| 870 } else { | |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
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parents:
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diff
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|
871 SDL_NAME(XDGACopyArea)(DGA_Display, DGA_Screen, |
| 0 | 872 srcx, srcy, w, h, dstx, dsty); |
| 873 } | |
|
540
4bcfb93e0dfe
Greatly improved X11 DGA video speed (thanks Cezary!)
Sam Lantinga <slouken@libsdl.org>
parents:
462
diff
changeset
|
874 if ( !(this->screen->flags & SDL_DOUBLEBUF) ) { |
|
1575
3ba88cb7eb1b
Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents:
1545
diff
changeset
|
875 XFlush(DGA_Display); |
|
540
4bcfb93e0dfe
Greatly improved X11 DGA video speed (thanks Cezary!)
Sam Lantinga <slouken@libsdl.org>
parents:
462
diff
changeset
|
876 } |
|
105
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diff
changeset
|
877 DGA_AddBusySurface(src); |
|
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Some minor name changes to clean up
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|
878 DGA_AddBusySurface(dst); |
|
101
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91
diff
changeset
|
879 UNLOCK_DISPLAY(); |
| 0 | 880 return(0); |
| 881 } | |
| 882 | |
| 883 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) | |
| 884 { | |
| 885 int accelerated; | |
| 886 | |
| 887 /* Set initial acceleration on */ | |
| 888 src->flags |= SDL_HWACCEL; | |
| 889 | |
| 890 /* Set the surface attributes */ | |
| 891 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { | |
| 892 if ( ! this->info.blit_hw_A ) { | |
| 893 src->flags &= ~SDL_HWACCEL; | |
| 894 } | |
| 895 } | |
| 896 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 897 if ( ! this->info.blit_hw_CC ) { | |
| 898 src->flags &= ~SDL_HWACCEL; | |
| 899 } | |
| 900 } | |
| 901 | |
| 902 /* Check to see if final surface blit is accelerated */ | |
| 903 accelerated = !!(src->flags & SDL_HWACCEL); | |
| 904 if ( accelerated ) { | |
| 905 src->map->hw_blit = HWAccelBlit; | |
| 906 } | |
| 907 return(accelerated); | |
| 908 } | |
| 909 | |
|
101
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diff
changeset
|
910 static __inline__ void DGA_WaitFlip(_THIS) |
| 0 | 911 { |
| 912 if ( was_flipped ) { | |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
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|
913 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 914 /* Keep waiting for the hardware ... */ ; |
| 915 was_flipped = 0; | |
| 916 } | |
| 917 } | |
| 918 | |
| 919 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface) | |
| 920 { | |
|
101
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diff
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|
921 if ( surface == this->screen ) { |
| 0 | 922 SDL_mutexP(hw_lock); |
|
101
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diff
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|
923 LOCK_DISPLAY(); |
|
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|
924 if ( DGA_IsSurfaceBusy(surface) ) { |
|
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|
925 DGA_WaitBusySurfaces(this); |
|
101
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|
926 } |
|
825b2fa28e2e
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diff
changeset
|
927 DGA_WaitFlip(this); |
|
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diff
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|
928 UNLOCK_DISPLAY(); |
|
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diff
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|
929 } else { |
|
105
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Some minor name changes to clean up
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diff
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|
930 if ( DGA_IsSurfaceBusy(surface) ) { |
|
101
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diff
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|
931 LOCK_DISPLAY(); |
|
105
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|
932 DGA_WaitBusySurfaces(this); |
|
101
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diff
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|
933 UNLOCK_DISPLAY(); |
|
825b2fa28e2e
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|
934 } |
| 0 | 935 } |
| 936 return(0); | |
| 937 } | |
| 938 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface) | |
| 939 { | |
|
101
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diff
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|
940 if ( surface == this->screen ) { |
| 0 | 941 SDL_mutexV(hw_lock); |
| 942 } | |
| 943 } | |
| 944 | |
| 945 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface) | |
| 946 { | |
| 947 /* Wait for vertical retrace and then flip display */ | |
|
101
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diff
changeset
|
948 LOCK_DISPLAY(); |
|
105
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|
949 if ( DGA_IsSurfaceBusy(this->screen) ) { |
|
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|
950 DGA_WaitBusySurfaces(this); |
|
101
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|
951 } |
|
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952 DGA_WaitFlip(this); |
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953 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, |
| 0 | 954 0, flip_yoffset[flip_page], XDGAFlipRetrace); |
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955 XFlush(DGA_Display); |
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956 UNLOCK_DISPLAY(); |
| 0 | 957 was_flipped = 1; |
| 958 flip_page = !flip_page; | |
| 959 | |
| 960 surface->pixels = flip_address[flip_page]; | |
| 961 return(0); | |
| 962 } | |
| 963 | |
| 964 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) | |
| 965 { | |
| 966 /* The application is already updating the visible video memory */ | |
| 967 return; | |
| 968 } | |
| 969 | |
| 970 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) | |
| 971 { | |
| 972 int i; | |
| 973 XColor *xcmap; | |
| 974 | |
| 975 /* This happens on initialization */ | |
| 976 if ( ! DGA_colormap ) { | |
| 977 return(0); | |
| 978 } | |
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979 xcmap = SDL_stack_alloc(XColor, ncolors); |
| 0 | 980 for ( i=0; i<ncolors; ++i ) { |
| 981 xcmap[i].pixel = firstcolor + i; | |
| 982 xcmap[i].red = (colors[i].r<<8)|colors[i].r; | |
| 983 xcmap[i].green = (colors[i].g<<8)|colors[i].g; | |
| 984 xcmap[i].blue = (colors[i].b<<8)|colors[i].b; | |
| 985 xcmap[i].flags = (DoRed|DoGreen|DoBlue); | |
| 986 } | |
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987 LOCK_DISPLAY(); |
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988 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
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989 XSync(DGA_Display, False); |
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990 UNLOCK_DISPLAY(); |
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991 SDL_stack_free(xcmap); |
| 0 | 992 |
| 993 /* That was easy. :) */ | |
| 994 return(1); | |
| 995 } | |
| 996 | |
| 997 int DGA_SetGammaRamp(_THIS, Uint16 *ramp) | |
| 998 { | |
| 999 int i, ncolors; | |
| 1000 XColor xcmap[256]; | |
| 1001 | |
| 1002 /* See if actually setting the gamma is supported */ | |
| 1003 if ( DGA_visualClass != DirectColor ) { | |
| 1004 SDL_SetError("Gamma correction not supported on this visual"); | |
| 1005 return(-1); | |
| 1006 } | |
| 1007 | |
| 1008 /* Calculate the appropriate palette for the given gamma ramp */ | |
| 1009 if ( this->screen->format->BitsPerPixel <= 16 ) { | |
| 1010 ncolors = 64; /* Is this right? */ | |
| 1011 } else { | |
| 1012 ncolors = 256; | |
| 1013 } | |
| 1014 for ( i=0; i<ncolors; ++i ) { | |
| 1015 Uint8 c = (256 * i / ncolors); | |
| 1016 xcmap[i].pixel = SDL_MapRGB(this->screen->format, c, c, c); | |
| 1017 xcmap[i].red = ramp[0*256+c]; | |
| 1018 xcmap[i].green = ramp[1*256+c]; | |
| 1019 xcmap[i].blue = ramp[2*256+c]; | |
| 1020 xcmap[i].flags = (DoRed|DoGreen|DoBlue); | |
| 1021 } | |
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1022 LOCK_DISPLAY(); |
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1023 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
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1024 XSync(DGA_Display, False); |
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1025 UNLOCK_DISPLAY(); |
| 0 | 1026 return(0); |
| 1027 } | |
| 1028 | |
| 1029 void DGA_VideoQuit(_THIS) | |
| 1030 { | |
| 1031 int i, j; | |
| 1032 | |
| 1033 if ( DGA_Display ) { | |
| 1034 /* Free colormap, if necessary */ | |
| 1035 if ( DGA_colormap ) { | |
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1036 XFreeColormap(DGA_Display, DGA_colormap); |
| 0 | 1037 DGA_colormap = 0; |
| 1038 } | |
| 1039 | |
| 1040 /* Unmap memory and reset video mode */ | |
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1041 SDL_NAME(XDGACloseFramebuffer)(DGA_Display, DGA_Screen); |
| 0 | 1042 if ( this->screen ) { |
| 1043 /* Tell SDL not to free the pixels */ | |
| 1044 this->screen->pixels = NULL; | |
| 1045 } | |
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1046 SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, 0); |
| 0 | 1047 |
| 1048 /* Clear the lock mutex */ | |
| 1049 if ( hw_lock != NULL ) { | |
| 1050 SDL_DestroyMutex(hw_lock); | |
| 1051 hw_lock = NULL; | |
| 1052 } | |
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1053 #ifdef LOCK_DGA_DISPLAY |
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1054 if ( event_lock != NULL ) { |
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1055 SDL_DestroyMutex(event_lock); |
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1056 event_lock = NULL; |
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1057 } |
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1058 #endif /* LOCK_DGA_DISPLAY */ |
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1059 |
| 0 | 1060 /* Clean up defined video modes */ |
| 1061 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
| 1062 if ( SDL_modelist[i] != NULL ) { | |
| 1063 for ( j=0; SDL_modelist[i][j]; ++j ) { | |
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1064 SDL_free(SDL_modelist[i][j]); |
| 0 | 1065 } |
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1066 SDL_free(SDL_modelist[i]); |
| 0 | 1067 SDL_modelist[i] = NULL; |
| 1068 } | |
| 1069 } | |
| 1070 | |
| 1071 /* Clean up the memory bucket list */ | |
| 1072 DGA_FreeHWSurfaces(this); | |
| 1073 | |
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1074 /* Restore DPMS and screensaver settings */ |
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1075 X11_RestoreScreenSaver(DGA_Display, screensaver_timeout, dpms_enabled); |
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1076 |
| 0 | 1077 /* Close up the display */ |
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1078 XCloseDisplay(DGA_Display); |
| 0 | 1079 } |
| 1080 } |