Mercurial > sdl-ios-xcode
annotate src/video/dga/SDL_dgavideo.c @ 4029:e7ec5ee35d54 SDL-1.2
Merged some patches from NetBSD pkgsrc:
Added two patches for Solaris 8. The X11 implementation does not
define the xEvent structure unless NEED_EVENTS is defined.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 10 Jul 2007 04:47:08 +0000 |
| parents | cc6bea4bb90d |
| children | e6c20cda4e28 |
| 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 |
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29 #define NEED_EVENTS |
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30 #define NEED_REPLIES |
| 0 | 31 #include <X11/Xlib.h> |
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32 #include "../Xext/extensions/xf86dga.h" |
| 0 | 33 |
| 34 #include "SDL_video.h" | |
| 35 #include "SDL_mouse.h" | |
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36 #include "../SDL_sysvideo.h" |
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37 #include "../SDL_pixels_c.h" |
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38 #include "../../events/SDL_events_c.h" |
| 0 | 39 #include "SDL_dgavideo.h" |
| 40 #include "SDL_dgamouse_c.h" | |
| 41 #include "SDL_dgaevents_c.h" | |
| 42 | |
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43 /* get function pointers... */ |
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44 #include "../x11/SDL_x11dyn.h" |
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45 |
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46 /*#define DGA_DEBUG*/ |
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47 |
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48 /* Heheh we're using X11 event code */ |
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49 extern void X11_SaveScreenSaver(Display *display, int *saved_timeout, BOOL *dpms); |
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50 extern void X11_DisableScreenSaver(Display *display); |
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51 extern void X11_RestoreScreenSaver(Display *display, int saved_timeout, BOOL dpms); |
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52 |
| 0 | 53 /* Initialization/Query functions */ |
| 54 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat); | |
| 55 static SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); | |
| 56 static SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); | |
| 57 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, | |
| 58 SDL_Color *colors); | |
| 59 static int DGA_SetGammaRamp(_THIS, Uint16 *ramp); | |
| 60 static void DGA_VideoQuit(_THIS); | |
| 61 | |
| 62 /* Hardware surface functions */ | |
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63 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size); |
| 0 | 64 static void DGA_FreeHWSurfaces(_THIS); |
| 65 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface); | |
| 66 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color); | |
| 67 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst); | |
| 68 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface); | |
| 69 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface); | |
| 70 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface); | |
| 71 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface); | |
| 72 | |
| 73 /* DGA driver bootstrap functions */ | |
| 74 | |
| 75 static int DGA_Available(void) | |
| 76 { | |
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77 const char *display = NULL; |
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78 Display *dpy = NULL; |
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79 int available = 0; |
| 0 | 80 |
| 81 /* The driver is available is available if the display is local | |
| 82 and the DGA 2.0+ extension is available, and we can map mem. | |
| 83 */ | |
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84 if ( SDL_X11_LoadSymbols() ) { |
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85 if ( (SDL_strncmp(XDisplayName(display), ":", 1) == 0) || |
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86 (SDL_strncmp(XDisplayName(display), "unix:", 5) == 0) ) { |
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87 dpy = XOpenDisplay(display); |
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88 if ( dpy ) { |
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89 int events, errors, major, minor; |
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90 |
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91 if ( SDL_NAME(XDGAQueryExtension)(dpy, &events, &errors) && |
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92 SDL_NAME(XDGAQueryVersion)(dpy, &major, &minor) ) { |
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93 int screen; |
| 0 | 94 |
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95 screen = DefaultScreen(dpy); |
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96 if ( (major >= 2) && |
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97 SDL_NAME(XDGAOpenFramebuffer)(dpy, screen) ) { |
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98 available = 1; |
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99 SDL_NAME(XDGACloseFramebuffer)(dpy, screen); |
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100 } |
| 0 | 101 } |
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102 XCloseDisplay(dpy); |
| 0 | 103 } |
| 104 } | |
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105 SDL_X11_UnloadSymbols(); |
| 0 | 106 } |
| 107 return(available); | |
| 108 } | |
| 109 | |
| 110 static void DGA_DeleteDevice(SDL_VideoDevice *device) | |
| 111 { | |
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112 if (device != NULL) { |
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113 SDL_free(device->hidden); |
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114 SDL_free(device); |
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115 SDL_X11_UnloadSymbols(); |
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116 } |
| 0 | 117 } |
| 118 | |
| 119 static SDL_VideoDevice *DGA_CreateDevice(int devindex) | |
| 120 { | |
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121 SDL_VideoDevice *device = NULL; |
| 0 | 122 |
| 123 /* Initialize all variables that we clean on shutdown */ | |
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124 if (SDL_X11_LoadSymbols()) { |
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125 device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
| 0 | 126 if ( device ) { |
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127 SDL_memset(device, 0, (sizeof *device)); |
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128 device->hidden = (struct SDL_PrivateVideoData *) |
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129 SDL_malloc((sizeof *device->hidden)); |
| 0 | 130 } |
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131 if ( (device == NULL) || (device->hidden == NULL) ) { |
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132 SDL_OutOfMemory(); |
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133 if ( device ) { |
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134 SDL_free(device); |
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135 } |
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136 SDL_X11_UnloadSymbols(); |
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137 return(0); |
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138 } |
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139 SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
| 0 | 140 |
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141 /* Set the function pointers */ |
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142 device->VideoInit = DGA_VideoInit; |
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143 device->ListModes = DGA_ListModes; |
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144 device->SetVideoMode = DGA_SetVideoMode; |
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145 device->SetColors = DGA_SetColors; |
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146 device->UpdateRects = NULL; |
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147 device->VideoQuit = DGA_VideoQuit; |
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148 device->AllocHWSurface = DGA_AllocHWSurface; |
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149 device->CheckHWBlit = DGA_CheckHWBlit; |
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150 device->FillHWRect = DGA_FillHWRect; |
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151 device->SetHWColorKey = NULL; |
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152 device->SetHWAlpha = NULL; |
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153 device->LockHWSurface = DGA_LockHWSurface; |
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154 device->UnlockHWSurface = DGA_UnlockHWSurface; |
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155 device->FlipHWSurface = DGA_FlipHWSurface; |
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156 device->FreeHWSurface = DGA_FreeHWSurface; |
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157 device->SetGammaRamp = DGA_SetGammaRamp; |
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158 device->GetGammaRamp = NULL; |
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159 device->SetCaption = NULL; |
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160 device->SetIcon = NULL; |
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161 device->IconifyWindow = NULL; |
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162 device->GrabInput = NULL; |
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163 device->GetWMInfo = NULL; |
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164 device->InitOSKeymap = DGA_InitOSKeymap; |
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165 device->PumpEvents = DGA_PumpEvents; |
| 0 | 166 |
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167 device->free = DGA_DeleteDevice; |
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168 } |
| 0 | 169 |
| 170 return device; | |
| 171 } | |
| 172 | |
| 173 VideoBootStrap DGA_bootstrap = { | |
| 174 "dga", "XFree86 DGA 2.0", | |
| 175 DGA_Available, DGA_CreateDevice | |
| 176 }; | |
| 177 | |
| 178 static int DGA_AddMode(_THIS, int bpp, int w, int h) | |
| 179 { | |
| 180 SDL_Rect *mode; | |
| 1800 | 181 int index; |
| 0 | 182 int next_mode; |
| 183 | |
| 184 /* Check to see if we already have this mode */ | |
| 185 if ( bpp < 8 ) { /* Not supported */ | |
| 186 return(0); | |
| 187 } | |
| 188 index = ((bpp+7)/8)-1; | |
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189 if ( SDL_nummodes[index] > 0 ) { |
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190 mode = SDL_modelist[index][SDL_nummodes[index]-1]; |
| 0 | 191 if ( (mode->w == w) && (mode->h == h) ) { |
| 192 return(0); | |
| 193 } | |
| 194 } | |
| 195 | |
| 196 /* Set up the new video mode rectangle */ | |
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197 mode = (SDL_Rect *)SDL_malloc(sizeof *mode); |
| 0 | 198 if ( mode == NULL ) { |
| 199 SDL_OutOfMemory(); | |
| 200 return(-1); | |
| 201 } | |
| 202 mode->x = 0; | |
| 203 mode->y = 0; | |
| 204 mode->w = w; | |
| 205 mode->h = h; | |
| 206 | |
| 207 /* Allocate the new list of modes, and fill in the new mode */ | |
| 208 next_mode = SDL_nummodes[index]; | |
| 209 SDL_modelist[index] = (SDL_Rect **) | |
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210 SDL_realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *)); |
| 0 | 211 if ( SDL_modelist[index] == NULL ) { |
| 212 SDL_OutOfMemory(); | |
| 213 SDL_nummodes[index] = 0; | |
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214 SDL_free(mode); |
| 0 | 215 return(-1); |
| 216 } | |
| 217 SDL_modelist[index][next_mode] = mode; | |
| 218 SDL_modelist[index][next_mode+1] = NULL; | |
| 219 SDL_nummodes[index]++; | |
| 220 | |
| 221 return(0); | |
| 222 } | |
| 223 | |
| 224 /* This whole function is a hack. :) */ | |
| 225 static Uint32 get_video_size(_THIS) | |
| 226 { | |
| 227 /* This is a non-exported function from libXxf86dga.a */ | |
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228 extern unsigned char *SDL_NAME(XDGAGetMappedMemory)(int screen); |
| 0 | 229 FILE *proc; |
| 230 unsigned long mem; | |
| 231 unsigned start, stop; | |
| 232 char line[BUFSIZ]; | |
| 233 Uint32 size; | |
| 234 | |
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235 mem = (unsigned long)SDL_NAME(XDGAGetMappedMemory)(DGA_Screen); |
| 0 | 236 size = 0; |
| 237 proc = fopen("/proc/self/maps", "r"); | |
| 238 if ( proc ) { | |
| 239 while ( fgets(line, sizeof(line)-1, proc) ) { | |
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240 SDL_sscanf(line, "%x-%x", &start, &stop); |
| 0 | 241 if ( start == mem ) { |
| 242 size = (Uint32)((stop-start)/1024); | |
| 243 break; | |
| 244 } | |
| 245 } | |
| 246 fclose(proc); | |
| 247 } | |
| 248 return(size); | |
| 249 } | |
| 250 | |
| 251 #ifdef DGA_DEBUG | |
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252 static void PrintMode(SDL_NAME(XDGAMode) *mode) |
| 0 | 253 { |
| 254 printf("Mode: %s (%dx%d) at %d bpp (%f refresh, %d pitch) num: %d\n", | |
| 255 mode->name, | |
| 256 mode->viewportWidth, mode->viewportHeight, | |
| 257 mode->depth == 24 ? mode->bitsPerPixel : mode->depth, | |
| 258 mode->verticalRefresh, mode->bytesPerScanline, mode->num); | |
| 259 printf("\tRGB: 0x%8.8x 0x%8.8x 0x%8.8x (%d - %s)\n", | |
| 260 mode->redMask, mode->greenMask, mode->blueMask, | |
| 261 mode->visualClass, | |
| 262 mode->visualClass == TrueColor ? "truecolor" : | |
| 263 mode->visualClass == DirectColor ? "directcolor" : | |
| 264 mode->visualClass == PseudoColor ? "pseudocolor" : "unknown"); | |
| 265 printf("\tFlags: "); | |
| 266 if ( mode->flags & XDGAConcurrentAccess ) | |
| 267 printf(" XDGAConcurrentAccess"); | |
| 268 if ( mode->flags & XDGASolidFillRect ) | |
| 269 printf(" XDGASolidFillRect"); | |
| 270 if ( mode->flags & XDGABlitRect ) | |
| 271 printf(" XDGABlitRect"); | |
| 272 if ( mode->flags & XDGABlitTransRect ) | |
| 273 printf(" XDGABlitTransRect"); | |
| 274 if ( mode->flags & XDGAPixmap ) | |
| 275 printf(" XDGAPixmap"); | |
| 276 if ( mode->flags & XDGAInterlaced ) | |
| 277 printf(" XDGAInterlaced"); | |
| 278 if ( mode->flags & XDGADoublescan ) | |
| 279 printf(" XDGADoublescan"); | |
| 280 if ( mode->viewportFlags & XDGAFlipRetrace ) | |
| 281 printf(" XDGAFlipRetrace"); | |
| 282 if ( mode->viewportFlags & XDGAFlipImmediate ) | |
| 283 printf(" XDGAFlipImmediate"); | |
| 284 printf("\n"); | |
| 285 } | |
| 286 #endif /* DGA_DEBUG */ | |
| 287 | |
| 288 static int cmpmodes(const void *va, const void *vb) | |
| 289 { | |
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290 const SDL_NAME(XDGAMode) *a = (const SDL_NAME(XDGAMode) *)va; |
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291 const SDL_NAME(XDGAMode) *b = (const SDL_NAME(XDGAMode) *)vb; |
| 0 | 292 |
| 293 if ( (a->viewportWidth == b->viewportWidth) && | |
| 294 (b->viewportHeight == a->viewportHeight) ) { | |
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295 /* Prefer 32 bpp over 24 bpp, 16 bpp over 15 bpp */ |
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296 int a_bpp = a->depth == 24 ? a->bitsPerPixel : a->depth; |
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297 int b_bpp = b->depth == 24 ? b->bitsPerPixel : b->depth; |
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298 if ( a_bpp != b_bpp ) { |
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299 return b_bpp - a_bpp; |
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300 } |
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301 /* Prefer DirectColor visuals, for gamma support */ |
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302 if ( a->visualClass == DirectColor && b->visualClass != DirectColor ) |
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303 return -1; |
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304 if ( b->visualClass == DirectColor && a->visualClass != DirectColor ) |
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305 return 1; |
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306 /* Maintain server refresh rate sorting */ |
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307 return a->num - b->num; |
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308 } else if ( a->viewportWidth == b->viewportWidth ) { |
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309 return b->viewportHeight - a->viewportHeight; |
| 0 | 310 } else { |
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311 return b->viewportWidth - a->viewportWidth; |
| 0 | 312 } |
| 313 } | |
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314 static void UpdateHWInfo(_THIS, SDL_NAME(XDGAMode) *mode) |
| 0 | 315 { |
| 316 this->info.wm_available = 0; | |
| 317 this->info.hw_available = 1; | |
| 318 if ( mode->flags & XDGABlitRect ) { | |
| 319 this->info.blit_hw = 1; | |
| 320 } else { | |
| 321 this->info.blit_hw = 0; | |
| 322 } | |
| 323 if ( mode->flags & XDGABlitTransRect ) { | |
| 324 this->info.blit_hw_CC = 1; | |
| 325 } else { | |
| 326 this->info.blit_hw_CC = 0; | |
| 327 } | |
| 328 if ( mode->flags & XDGASolidFillRect ) { | |
| 329 this->info.blit_fill = 1; | |
| 330 } else { | |
| 331 this->info.blit_fill = 0; | |
| 332 } | |
| 333 this->info.video_mem = get_video_size(this); | |
| 334 } | |
| 335 | |
| 336 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat) | |
| 337 { | |
| 338 const char *display; | |
| 339 int event_base, error_base; | |
| 340 int major_version, minor_version; | |
| 341 Visual *visual; | |
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342 SDL_NAME(XDGAMode) *modes; |
| 0 | 343 int i, num_modes; |
| 344 | |
| 345 /* Open the X11 display */ | |
| 346 display = NULL; /* Get it from DISPLAY environment variable */ | |
| 347 | |
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348 DGA_Display = XOpenDisplay(display); |
| 0 | 349 if ( DGA_Display == NULL ) { |
| 350 SDL_SetError("Couldn't open X11 display"); | |
| 351 return(-1); | |
| 352 } | |
| 353 | |
| 354 /* Check for the DGA extension */ | |
|
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355 if ( ! SDL_NAME(XDGAQueryExtension)(DGA_Display, &event_base, &error_base) || |
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356 ! SDL_NAME(XDGAQueryVersion)(DGA_Display, &major_version, &minor_version) ) { |
| 0 | 357 SDL_SetError("DGA extension not available"); |
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358 XCloseDisplay(DGA_Display); |
| 0 | 359 return(-1); |
| 360 } | |
| 361 if ( major_version < 2 ) { | |
| 362 SDL_SetError("DGA driver requires DGA 2.0 or newer"); | |
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363 XCloseDisplay(DGA_Display); |
| 0 | 364 return(-1); |
| 365 } | |
| 366 DGA_event_base = event_base; | |
| 367 | |
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368 /* Determine the current screen size */ |
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369 this->info.current_w = DisplayWidth(DGA_Display, DGA_Screen); |
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370 this->info.current_h = DisplayHeight(DGA_Display, DGA_Screen); |
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371 |
| 0 | 372 /* Determine the current screen depth */ |
| 373 visual = DefaultVisual(DGA_Display, DGA_Screen); | |
| 374 { | |
| 375 XPixmapFormatValues *pix_format; | |
| 376 int i, num_formats; | |
| 377 | |
| 378 vformat->BitsPerPixel = DefaultDepth(DGA_Display, DGA_Screen); | |
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379 pix_format = XListPixmapFormats(DGA_Display, &num_formats); |
| 0 | 380 if ( pix_format == NULL ) { |
| 381 SDL_SetError("Couldn't determine screen formats"); | |
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382 XCloseDisplay(DGA_Display); |
| 0 | 383 return(-1); |
| 384 } | |
| 385 for ( i=0; i<num_formats; ++i ) { | |
| 386 if ( vformat->BitsPerPixel == pix_format[i].depth ) | |
| 387 break; | |
| 388 } | |
| 389 if ( i != num_formats ) | |
| 390 vformat->BitsPerPixel = pix_format[i].bits_per_pixel; | |
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391 XFree((char *)pix_format); |
| 0 | 392 } |
| 393 if ( vformat->BitsPerPixel > 8 ) { | |
| 394 vformat->Rmask = visual->red_mask; | |
| 395 vformat->Gmask = visual->green_mask; | |
| 396 vformat->Bmask = visual->blue_mask; | |
| 397 } | |
| 398 | |
| 399 /* Open access to the framebuffer */ | |
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400 if ( ! SDL_NAME(XDGAOpenFramebuffer)(DGA_Display, DGA_Screen) ) { |
| 0 | 401 SDL_SetError("Unable to map the video memory"); |
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402 XCloseDisplay(DGA_Display); |
| 0 | 403 return(-1); |
| 404 } | |
| 405 | |
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406 /* Save DPMS and screensaver settings */ |
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407 X11_SaveScreenSaver(DGA_Display, &screensaver_timeout, &dpms_enabled); |
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408 X11_DisableScreenSaver(DGA_Display); |
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409 |
| 0 | 410 /* Query for the list of available video modes */ |
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411 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
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412 SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes); |
| 0 | 413 for ( i=0; i<num_modes; ++i ) { |
|
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414 if ( ((modes[i].visualClass == PseudoColor) || |
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415 (modes[i].visualClass == DirectColor) || |
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416 (modes[i].visualClass == TrueColor)) && |
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417 !(modes[i].flags & (XDGAInterlaced|XDGADoublescan)) ) { |
| 0 | 418 #ifdef DGA_DEBUG |
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419 PrintMode(&modes[i]); |
| 0 | 420 #endif |
| 421 DGA_AddMode(this, modes[i].bitsPerPixel, | |
| 422 modes[i].viewportWidth, | |
| 423 modes[i].viewportHeight); | |
| 424 } | |
| 425 } | |
| 426 UpdateHWInfo(this, modes); | |
|
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427 XFree(modes); |
| 0 | 428 |
| 429 /* Create the hardware surface lock mutex */ | |
| 430 hw_lock = SDL_CreateMutex(); | |
| 431 if ( hw_lock == NULL ) { | |
| 432 SDL_SetError("Unable to create lock mutex"); | |
| 433 DGA_VideoQuit(this); | |
| 434 return(-1); | |
| 435 } | |
| 436 | |
|
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437 #ifdef LOCK_DGA_DISPLAY |
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438 /* Create the event lock so we're thread-safe.. :-/ */ |
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439 event_lock = SDL_CreateMutex(); |
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440 #endif /* LOCK_DGA_DISPLAY */ |
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441 |
| 0 | 442 /* We're done! */ |
| 443 return(0); | |
| 444 } | |
| 445 | |
| 446 SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) | |
| 447 { | |
| 448 return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); | |
| 449 } | |
| 450 | |
| 451 /* Various screen update functions available */ | |
| 452 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); | |
| 453 | |
| 454 SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, | |
| 455 int width, int height, int bpp, Uint32 flags) | |
| 456 { | |
|
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457 SDL_NAME(XDGAMode) *modes; |
| 0 | 458 int i, num_modes; |
|
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459 SDL_NAME(XDGADevice) *mode; |
| 0 | 460 int screen_len; |
| 461 Uint8 *surfaces_mem; | |
| 462 int surfaces_len; | |
| 463 | |
| 464 /* Free any previous colormap */ | |
| 465 if ( DGA_colormap ) { | |
|
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466 XFreeColormap(DGA_Display, DGA_colormap); |
| 0 | 467 DGA_colormap = 0; |
| 468 } | |
| 469 | |
| 470 /* Search for a matching video mode */ | |
|
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471 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
|
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472 SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes); |
| 0 | 473 for ( i=0; i<num_modes; ++i ) { |
| 474 int depth; | |
| 475 | |
| 476 depth = modes[i].depth; | |
| 477 if ( depth == 24 ) { /* Distinguish between 24 and 32 bpp */ | |
| 478 depth = modes[i].bitsPerPixel; | |
| 479 } | |
| 480 if ( (depth == bpp) && | |
| 481 (modes[i].viewportWidth == width) && | |
| 482 (modes[i].viewportHeight == height) && | |
| 483 ((modes[i].visualClass == PseudoColor) || | |
| 484 (modes[i].visualClass == DirectColor) || | |
|
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485 (modes[i].visualClass == TrueColor)) && |
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486 !(modes[i].flags & (XDGAInterlaced|XDGADoublescan)) ) { |
| 0 | 487 break; |
| 488 } | |
| 489 } | |
| 490 if ( i == num_modes ) { | |
| 491 SDL_SetError("No matching video mode found"); | |
| 492 return(NULL); | |
| 493 } | |
|
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494 #ifdef DGA_DEBUG |
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495 PrintMode(&modes[i]); |
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496 #endif |
| 0 | 497 |
| 498 /* Set the video mode */ | |
|
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499 mode = SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, modes[i].num); |
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500 XFree(modes); |
| 0 | 501 if ( mode == NULL ) { |
| 502 SDL_SetError("Unable to switch to requested mode"); | |
| 503 return(NULL); | |
| 504 } | |
|
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Fixed invalid memory access in DGA video driver (thanks ldb!)
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505 DGA_visualClass = mode->mode.visualClass; |
| 0 | 506 memory_base = (Uint8 *)mode->data; |
| 507 memory_pitch = mode->mode.bytesPerScanline; | |
| 508 | |
| 509 /* Set up the new mode framebuffer */ | |
| 510 current->flags = (SDL_FULLSCREEN|SDL_HWSURFACE); | |
| 511 current->w = mode->mode.viewportWidth; | |
| 512 current->h = mode->mode.viewportHeight; | |
| 513 current->pitch = memory_pitch; | |
| 514 current->pixels = memory_base; | |
| 515 if ( ! SDL_ReallocFormat(current, mode->mode.bitsPerPixel, | |
| 516 mode->mode.redMask, | |
| 517 mode->mode.greenMask, | |
| 518 mode->mode.blueMask, 0) ) { | |
| 519 return(NULL); | |
| 520 } | |
| 521 screen_len = current->h*current->pitch; | |
| 522 | |
| 523 /* Create a colormap if necessary */ | |
| 524 if ( (DGA_visualClass == PseudoColor) || | |
| 525 (DGA_visualClass == DirectColor) ) { | |
|
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526 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
| 0 | 527 mode, AllocAll); |
| 528 if ( DGA_visualClass == PseudoColor ) { | |
| 529 current->flags |= SDL_HWPALETTE; | |
| 530 } else { | |
| 531 /* Initialize the colormap to the identity mapping */ | |
| 532 SDL_GetGammaRamp(0, 0, 0); | |
| 533 this->screen = current; | |
| 534 DGA_SetGammaRamp(this, this->gamma); | |
| 535 this->screen = NULL; | |
| 536 } | |
| 537 } else { | |
|
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538 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
| 0 | 539 mode, AllocNone); |
| 540 } | |
|
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541 SDL_NAME(XDGAInstallColormap)(DGA_Display, DGA_Screen, DGA_colormap); |
| 0 | 542 |
| 543 /* Update the hardware capabilities */ | |
| 544 UpdateHWInfo(this, &mode->mode); | |
| 545 | |
| 546 /* Set up the information for hardware surfaces */ | |
| 547 surfaces_mem = (Uint8 *)current->pixels + screen_len; | |
| 548 surfaces_len = (mode->mode.imageHeight*current->pitch - screen_len); | |
| 549 | |
| 550 /* Update for double-buffering, if we can */ | |
|
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551 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, 0, 0, XDGAFlipRetrace); |
| 0 | 552 if ( flags & SDL_DOUBLEBUF ) { |
| 553 if ( mode->mode.imageHeight >= (current->h*2) ) { | |
| 554 current->flags |= SDL_DOUBLEBUF; | |
| 555 flip_page = 0; | |
| 556 flip_yoffset[0] = 0; | |
| 557 flip_yoffset[1] = current->h; | |
| 558 flip_address[0] = memory_base; | |
| 559 flip_address[1] = memory_base+screen_len; | |
| 560 surfaces_mem += screen_len; | |
| 561 surfaces_len -= screen_len; | |
| 562 } | |
| 563 } | |
| 564 | |
| 565 /* Allocate memory tracking for hardware surfaces */ | |
| 566 DGA_FreeHWSurfaces(this); | |
| 567 if ( surfaces_len < 0 ) { | |
| 568 surfaces_len = 0; | |
| 569 } | |
|
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570 DGA_InitHWSurfaces(this, current, surfaces_mem, surfaces_len); |
| 0 | 571 |
|
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572 /* Expose the back buffer as surface memory */ |
|
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573 if ( current->flags & SDL_DOUBLEBUF ) { |
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574 this->screen = current; |
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575 DGA_FlipHWSurface(this, current); |
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576 this->screen = NULL; |
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577 } |
|
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578 |
| 0 | 579 /* Set the update rectangle function */ |
| 580 this->UpdateRects = DGA_DirectUpdate; | |
| 581 | |
| 582 /* Enable mouse and keyboard support */ | |
| 583 { long input_mask; | |
| 584 input_mask = (KeyPressMask | KeyReleaseMask); | |
| 585 input_mask |= (ButtonPressMask | ButtonReleaseMask); | |
| 586 input_mask |= PointerMotionMask; | |
|
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Added SDL_LockRect() and SDL_UnlockRect()
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587 SDL_NAME(XDGASelectInput)(DGA_Display, DGA_Screen, input_mask); |
| 0 | 588 } |
| 589 | |
| 590 /* We're done */ | |
| 591 return(current); | |
| 592 } | |
| 593 | |
| 594 #ifdef DGA_DEBUG | |
| 595 static void DGA_DumpHWSurfaces(_THIS) | |
| 596 { | |
| 597 vidmem_bucket *bucket; | |
| 598 | |
| 599 printf("Memory left: %d (%d total)\n", surfaces_memleft, surfaces_memtotal); | |
| 600 printf("\n"); | |
| 601 printf(" Base Size\n"); | |
| 602 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { | |
| 603 printf("Bucket: %p, %d (%s)\n", bucket->base, bucket->size, bucket->used ? "used" : "free"); | |
| 604 if ( bucket->prev ) { | |
| 605 if ( bucket->base != bucket->prev->base+bucket->prev->size ) { | |
| 606 printf("Warning, corrupt bucket list! (prev)\n"); | |
| 607 } | |
| 608 } else { | |
| 609 if ( bucket != &surfaces ) { | |
| 610 printf("Warning, corrupt bucket list! (!prev)\n"); | |
| 611 } | |
| 612 } | |
| 613 if ( bucket->next ) { | |
| 614 if ( bucket->next->base != bucket->base+bucket->size ) { | |
| 615 printf("Warning, corrupt bucket list! (next)\n"); | |
| 616 } | |
| 617 } | |
| 618 } | |
| 619 printf("\n"); | |
| 620 } | |
| 621 #endif | |
| 622 | |
|
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623 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size) |
| 0 | 624 { |
|
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625 vidmem_bucket *bucket; |
|
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626 |
| 0 | 627 surfaces_memtotal = size; |
| 628 surfaces_memleft = size; | |
|
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629 |
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630 if ( surfaces_memleft > 0 ) { |
|
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631 bucket = (vidmem_bucket *)SDL_malloc(sizeof(*bucket)); |
|
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632 if ( bucket == NULL ) { |
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633 SDL_OutOfMemory(); |
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634 return(-1); |
|
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635 } |
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|
636 bucket->prev = &surfaces; |
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637 bucket->used = 0; |
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638 bucket->dirty = 0; |
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639 bucket->base = base; |
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640 bucket->size = size; |
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641 bucket->next = NULL; |
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642 } else { |
|
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643 bucket = NULL; |
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644 } |
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645 |
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646 surfaces.prev = NULL; |
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647 surfaces.used = 1; |
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648 surfaces.dirty = 0; |
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649 surfaces.base = screen->pixels; |
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650 surfaces.size = (unsigned int)((long)base - (long)surfaces.base); |
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651 surfaces.next = bucket; |
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652 screen->hwdata = (struct private_hwdata *)&surfaces; |
| 0 | 653 return(0); |
| 654 } | |
| 655 static void DGA_FreeHWSurfaces(_THIS) | |
| 656 { | |
| 657 vidmem_bucket *bucket, *freeable; | |
| 658 | |
| 659 bucket = surfaces.next; | |
| 660 while ( bucket ) { | |
| 661 freeable = bucket; | |
| 662 bucket = bucket->next; | |
|
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663 SDL_free(freeable); |
| 0 | 664 } |
| 665 surfaces.next = NULL; | |
| 666 } | |
| 667 | |
|
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668 static __inline__ void DGA_AddBusySurface(SDL_Surface *surface) |
|
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669 { |
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670 ((vidmem_bucket *)surface->hwdata)->dirty = 1; |
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671 } |
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672 |
|
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673 static __inline__ int DGA_IsSurfaceBusy(SDL_Surface *surface) |
|
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674 { |
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675 return ((vidmem_bucket *)surface->hwdata)->dirty; |
|
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676 } |
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677 |
|
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678 static __inline__ void DGA_WaitBusySurfaces(_THIS) |
|
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679 { |
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680 vidmem_bucket *bucket; |
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681 |
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682 /* Wait for graphic operations to complete */ |
|
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683 SDL_NAME(XDGASync)(DGA_Display, DGA_Screen); |
|
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684 |
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685 /* Clear all surface dirty bits */ |
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686 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
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687 bucket->dirty = 0; |
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688 } |
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689 } |
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690 |
| 0 | 691 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface) |
| 692 { | |
| 693 vidmem_bucket *bucket; | |
| 694 int size; | |
| 695 int extra; | |
|
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696 int retval = 0; |
| 0 | 697 |
| 698 /* Temporarily, we only allow surfaces the same width as display. | |
| 699 Some blitters require the pitch between two hardware surfaces | |
| 700 to be the same. Others have interesting alignment restrictions. | |
| 701 */ | |
| 702 if ( surface->pitch > SDL_VideoSurface->pitch ) { | |
| 703 SDL_SetError("Surface requested wider than screen"); | |
| 704 return(-1); | |
| 705 } | |
| 706 surface->pitch = SDL_VideoSurface->pitch; | |
| 707 size = surface->h * surface->pitch; | |
| 708 #ifdef DGA_DEBUG | |
| 709 fprintf(stderr, "Allocating bucket of %d bytes\n", size); | |
| 710 #endif | |
|
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711 LOCK_DISPLAY(); |
| 0 | 712 |
| 713 /* Quick check for available mem */ | |
| 714 if ( size > surfaces_memleft ) { | |
| 715 SDL_SetError("Not enough video memory"); | |
|
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716 retval = -1; |
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717 goto done; |
| 0 | 718 } |
| 719 | |
| 720 /* Search for an empty bucket big enough */ | |
| 721 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { | |
| 722 if ( ! bucket->used && (size <= bucket->size) ) { | |
| 723 break; | |
| 724 } | |
| 725 } | |
| 726 if ( bucket == NULL ) { | |
| 727 SDL_SetError("Video memory too fragmented"); | |
|
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728 retval = -1; |
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729 goto done; |
| 0 | 730 } |
| 731 | |
| 732 /* Create a new bucket for left-over memory */ | |
| 733 extra = (bucket->size - size); | |
| 734 if ( extra ) { | |
| 735 vidmem_bucket *newbucket; | |
| 736 | |
| 737 #ifdef DGA_DEBUG | |
| 738 fprintf(stderr, "Adding new free bucket of %d bytes\n", extra); | |
| 739 #endif | |
|
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740 newbucket = (vidmem_bucket *)SDL_malloc(sizeof(*newbucket)); |
| 0 | 741 if ( newbucket == NULL ) { |
| 742 SDL_OutOfMemory(); | |
|
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743 retval = -1; |
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744 goto done; |
| 0 | 745 } |
| 746 newbucket->prev = bucket; | |
| 747 newbucket->used = 0; | |
| 748 newbucket->base = bucket->base+size; | |
| 749 newbucket->size = extra; | |
| 750 newbucket->next = bucket->next; | |
| 751 if ( bucket->next ) { | |
| 752 bucket->next->prev = newbucket; | |
| 753 } | |
| 754 bucket->next = newbucket; | |
| 755 } | |
| 756 | |
| 757 /* Set the current bucket values and return it! */ | |
| 758 bucket->used = 1; | |
| 759 bucket->size = size; | |
|
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760 bucket->dirty = 0; |
| 0 | 761 #ifdef DGA_DEBUG |
| 762 fprintf(stderr, "Allocated %d bytes at %p\n", bucket->size, bucket->base); | |
| 763 #endif | |
| 764 surfaces_memleft -= size; | |
| 765 surface->flags |= SDL_HWSURFACE; | |
| 766 surface->pixels = bucket->base; | |
|
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767 surface->hwdata = (struct private_hwdata *)bucket; |
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768 done: |
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769 UNLOCK_DISPLAY(); |
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770 return(retval); |
| 0 | 771 } |
| 772 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface) | |
| 773 { | |
| 774 vidmem_bucket *bucket, *freeable; | |
| 775 | |
| 1786 | 776 /* Wait for any pending operations involving this surface */ |
| 777 if ( DGA_IsSurfaceBusy(surface) ) { | |
| 778 LOCK_DISPLAY(); | |
| 779 DGA_WaitBusySurfaces(this); | |
| 780 UNLOCK_DISPLAY(); | |
| 781 } | |
| 782 | |
| 0 | 783 /* Look for the bucket in the current list */ |
|
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784 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
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785 if ( bucket == (vidmem_bucket *)surface->hwdata ) { |
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786 break; |
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787 } |
| 0 | 788 } |
|
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789 if ( bucket && bucket->used ) { |
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790 /* Add the memory back to the total */ |
| 0 | 791 #ifdef DGA_DEBUG |
| 792 printf("Freeing bucket of %d bytes\n", bucket->size); | |
| 793 #endif | |
|
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794 surfaces_memleft += bucket->size; |
| 0 | 795 |
|
102
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796 /* Can we merge the space with surrounding buckets? */ |
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797 bucket->used = 0; |
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798 if ( bucket->next && ! bucket->next->used ) { |
| 0 | 799 #ifdef DGA_DEBUG |
| 800 printf("Merging with next bucket, for %d total bytes\n", bucket->size+bucket->next->size); | |
| 801 #endif | |
|
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802 freeable = bucket->next; |
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803 bucket->size += bucket->next->size; |
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804 bucket->next = bucket->next->next; |
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805 if ( bucket->next ) { |
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806 bucket->next->prev = bucket; |
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807 } |
|
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808 SDL_free(freeable); |
| 0 | 809 } |
|
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810 if ( bucket->prev && ! bucket->prev->used ) { |
| 0 | 811 #ifdef DGA_DEBUG |
| 812 printf("Merging with previous bucket, for %d total bytes\n", bucket->prev->size+bucket->size); | |
| 813 #endif | |
|
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814 freeable = bucket; |
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815 bucket->prev->size += bucket->size; |
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816 bucket->prev->next = bucket->next; |
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817 if ( bucket->next ) { |
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818 bucket->next->prev = bucket->prev; |
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819 } |
|
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820 SDL_free(freeable); |
| 0 | 821 } |
| 822 } | |
| 823 surface->pixels = NULL; | |
|
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824 surface->hwdata = NULL; |
| 0 | 825 } |
| 826 | |
|
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827 static __inline__ void DGA_dst_to_xy(_THIS, SDL_Surface *dst, int *x, int *y) |
| 0 | 828 { |
| 829 *x = (long)((Uint8 *)dst->pixels - memory_base)%memory_pitch; | |
| 830 *y = (long)((Uint8 *)dst->pixels - memory_base)/memory_pitch; | |
| 831 } | |
| 832 | |
| 833 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) | |
| 834 { | |
| 835 int x, y; | |
| 836 unsigned int w, h; | |
| 837 | |
| 838 /* Don't fill the visible part of the screen, wait until flipped */ | |
|
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839 LOCK_DISPLAY(); |
| 0 | 840 if ( was_flipped && (dst == this->screen) ) { |
|
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841 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 842 /* Keep waiting for the hardware ... */ ; |
| 843 was_flipped = 0; | |
| 844 } | |
|
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845 DGA_dst_to_xy(this, dst, &x, &y); |
| 0 | 846 x += rect->x; |
| 847 y += rect->y; | |
| 848 w = rect->w; | |
| 849 h = rect->h; | |
| 850 #if 0 | |
| 851 printf("Hardware accelerated rectangle fill: %dx%d at %d,%d\n", w, h, x, y); | |
| 852 #endif | |
|
292
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853 SDL_NAME(XDGAFillRectangle)(DGA_Display, DGA_Screen, x, y, w, h, color); |
|
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|
854 if ( !(this->screen->flags & SDL_DOUBLEBUF) ) { |
|
1575
3ba88cb7eb1b
Updated dynamic X11 code. See details in Bugzilla #170.
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|
855 XFlush(DGA_Display); |
|
540
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|
856 } |
|
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857 DGA_AddBusySurface(dst); |
|
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|
858 UNLOCK_DISPLAY(); |
| 0 | 859 return(0); |
| 860 } | |
| 861 | |
| 862 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, | |
| 863 SDL_Surface *dst, SDL_Rect *dstrect) | |
| 864 { | |
| 865 SDL_VideoDevice *this; | |
| 866 int srcx, srcy; | |
| 867 int dstx, dsty; | |
| 868 unsigned int w, h; | |
| 869 | |
| 870 this = current_video; | |
| 871 /* Don't blit to the visible part of the screen, wait until flipped */ | |
|
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872 LOCK_DISPLAY(); |
| 0 | 873 if ( was_flipped && (dst == this->screen) ) { |
|
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Added SDL_LockRect() and SDL_UnlockRect()
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874 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 875 /* Keep waiting for the hardware ... */ ; |
| 876 was_flipped = 0; | |
| 877 } | |
|
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878 DGA_dst_to_xy(this, src, &srcx, &srcy); |
| 0 | 879 srcx += srcrect->x; |
| 880 srcy += srcrect->y; | |
|
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881 DGA_dst_to_xy(this, dst, &dstx, &dsty); |
| 0 | 882 dstx += dstrect->x; |
| 883 dsty += dstrect->y; | |
| 884 w = srcrect->w; | |
| 885 h = srcrect->h; | |
| 886 #if 0 | |
| 887 printf("Blitting %dx%d from %d,%d to %d,%d\n", w, h, srcx, srcy, dstx, dsty); | |
| 888 #endif | |
| 889 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
|
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890 SDL_NAME(XDGACopyTransparentArea)(DGA_Display, DGA_Screen, |
| 0 | 891 srcx, srcy, w, h, dstx, dsty, src->format->colorkey); |
| 892 } else { | |
|
292
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893 SDL_NAME(XDGACopyArea)(DGA_Display, DGA_Screen, |
| 0 | 894 srcx, srcy, w, h, dstx, dsty); |
| 895 } | |
|
540
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Greatly improved X11 DGA video speed (thanks Cezary!)
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|
896 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
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|
897 XFlush(DGA_Display); |
|
540
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|
898 } |
|
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|
899 DGA_AddBusySurface(src); |
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900 DGA_AddBusySurface(dst); |
|
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|
901 UNLOCK_DISPLAY(); |
| 0 | 902 return(0); |
| 903 } | |
| 904 | |
| 905 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) | |
| 906 { | |
| 907 int accelerated; | |
| 908 | |
| 909 /* Set initial acceleration on */ | |
| 910 src->flags |= SDL_HWACCEL; | |
| 911 | |
| 912 /* Set the surface attributes */ | |
| 913 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { | |
| 914 if ( ! this->info.blit_hw_A ) { | |
| 915 src->flags &= ~SDL_HWACCEL; | |
| 916 } | |
| 917 } | |
| 918 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 919 if ( ! this->info.blit_hw_CC ) { | |
| 920 src->flags &= ~SDL_HWACCEL; | |
| 921 } | |
| 922 } | |
| 923 | |
| 924 /* Check to see if final surface blit is accelerated */ | |
| 925 accelerated = !!(src->flags & SDL_HWACCEL); | |
| 926 if ( accelerated ) { | |
| 927 src->map->hw_blit = HWAccelBlit; | |
| 928 } | |
| 929 return(accelerated); | |
| 930 } | |
| 931 | |
|
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932 static __inline__ void DGA_WaitFlip(_THIS) |
| 0 | 933 { |
| 934 if ( was_flipped ) { | |
|
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935 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 936 /* Keep waiting for the hardware ... */ ; |
| 937 was_flipped = 0; | |
| 938 } | |
| 939 } | |
| 940 | |
| 941 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface) | |
| 942 { | |
|
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943 if ( surface == this->screen ) { |
| 0 | 944 SDL_mutexP(hw_lock); |
|
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945 LOCK_DISPLAY(); |
|
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946 if ( DGA_IsSurfaceBusy(surface) ) { |
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947 DGA_WaitBusySurfaces(this); |
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948 } |
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949 DGA_WaitFlip(this); |
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950 UNLOCK_DISPLAY(); |
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951 } else { |
|
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952 if ( DGA_IsSurfaceBusy(surface) ) { |
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953 LOCK_DISPLAY(); |
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954 DGA_WaitBusySurfaces(this); |
|
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955 UNLOCK_DISPLAY(); |
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956 } |
| 0 | 957 } |
| 958 return(0); | |
| 959 } | |
| 960 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface) | |
| 961 { | |
|
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962 if ( surface == this->screen ) { |
| 0 | 963 SDL_mutexV(hw_lock); |
| 964 } | |
| 965 } | |
| 966 | |
| 967 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface) | |
| 968 { | |
| 969 /* Wait for vertical retrace and then flip display */ | |
|
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970 LOCK_DISPLAY(); |
|
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971 if ( DGA_IsSurfaceBusy(this->screen) ) { |
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972 DGA_WaitBusySurfaces(this); |
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973 } |
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974 DGA_WaitFlip(this); |
|
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975 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, |
| 0 | 976 0, flip_yoffset[flip_page], XDGAFlipRetrace); |
|
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977 XFlush(DGA_Display); |
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978 UNLOCK_DISPLAY(); |
| 0 | 979 was_flipped = 1; |
| 980 flip_page = !flip_page; | |
| 981 | |
| 982 surface->pixels = flip_address[flip_page]; | |
| 983 return(0); | |
| 984 } | |
| 985 | |
| 986 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) | |
| 987 { | |
| 988 /* The application is already updating the visible video memory */ | |
| 989 return; | |
| 990 } | |
| 991 | |
| 992 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) | |
| 993 { | |
| 994 int i; | |
| 995 XColor *xcmap; | |
| 996 | |
| 997 /* This happens on initialization */ | |
| 998 if ( ! DGA_colormap ) { | |
| 999 return(0); | |
| 1000 } | |
|
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1001 xcmap = SDL_stack_alloc(XColor, ncolors); |
| 0 | 1002 for ( i=0; i<ncolors; ++i ) { |
| 1003 xcmap[i].pixel = firstcolor + i; | |
| 1004 xcmap[i].red = (colors[i].r<<8)|colors[i].r; | |
| 1005 xcmap[i].green = (colors[i].g<<8)|colors[i].g; | |
| 1006 xcmap[i].blue = (colors[i].b<<8)|colors[i].b; | |
| 1007 xcmap[i].flags = (DoRed|DoGreen|DoBlue); | |
| 1008 } | |
|
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1009 LOCK_DISPLAY(); |
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1010 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
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1011 XSync(DGA_Display, False); |
|
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1012 UNLOCK_DISPLAY(); |
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1013 SDL_stack_free(xcmap); |
| 0 | 1014 |
| 1015 /* That was easy. :) */ | |
| 1016 return(1); | |
| 1017 } | |
| 1018 | |
| 1019 int DGA_SetGammaRamp(_THIS, Uint16 *ramp) | |
| 1020 { | |
| 1021 int i, ncolors; | |
| 1022 XColor xcmap[256]; | |
| 1023 | |
| 1024 /* See if actually setting the gamma is supported */ | |
| 1025 if ( DGA_visualClass != DirectColor ) { | |
| 1026 SDL_SetError("Gamma correction not supported on this visual"); | |
| 1027 return(-1); | |
| 1028 } | |
| 1029 | |
| 1030 /* Calculate the appropriate palette for the given gamma ramp */ | |
| 1031 if ( this->screen->format->BitsPerPixel <= 16 ) { | |
| 1032 ncolors = 64; /* Is this right? */ | |
| 1033 } else { | |
| 1034 ncolors = 256; | |
| 1035 } | |
| 1036 for ( i=0; i<ncolors; ++i ) { | |
| 1037 Uint8 c = (256 * i / ncolors); | |
| 1038 xcmap[i].pixel = SDL_MapRGB(this->screen->format, c, c, c); | |
| 1039 xcmap[i].red = ramp[0*256+c]; | |
| 1040 xcmap[i].green = ramp[1*256+c]; | |
| 1041 xcmap[i].blue = ramp[2*256+c]; | |
| 1042 xcmap[i].flags = (DoRed|DoGreen|DoBlue); | |
| 1043 } | |
|
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1044 LOCK_DISPLAY(); |
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1045 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
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1046 XSync(DGA_Display, False); |
|
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1047 UNLOCK_DISPLAY(); |
| 0 | 1048 return(0); |
| 1049 } | |
| 1050 | |
| 1051 void DGA_VideoQuit(_THIS) | |
| 1052 { | |
| 1053 int i, j; | |
| 1054 | |
| 1055 if ( DGA_Display ) { | |
| 1056 /* Free colormap, if necessary */ | |
| 1057 if ( DGA_colormap ) { | |
|
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1058 XFreeColormap(DGA_Display, DGA_colormap); |
| 0 | 1059 DGA_colormap = 0; |
| 1060 } | |
| 1061 | |
| 1062 /* Unmap memory and reset video mode */ | |
|
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1063 SDL_NAME(XDGACloseFramebuffer)(DGA_Display, DGA_Screen); |
| 0 | 1064 if ( this->screen ) { |
| 1065 /* Tell SDL not to free the pixels */ | |
| 1786 | 1066 DGA_FreeHWSurface(this, this->screen); |
| 0 | 1067 } |
|
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1068 SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, 0); |
| 0 | 1069 |
| 1070 /* Clear the lock mutex */ | |
| 1071 if ( hw_lock != NULL ) { | |
| 1072 SDL_DestroyMutex(hw_lock); | |
| 1073 hw_lock = NULL; | |
| 1074 } | |
|
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1075 #ifdef LOCK_DGA_DISPLAY |
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1076 if ( event_lock != NULL ) { |
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1077 SDL_DestroyMutex(event_lock); |
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1078 event_lock = NULL; |
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1079 } |
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1080 #endif /* LOCK_DGA_DISPLAY */ |
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1081 |
| 0 | 1082 /* Clean up defined video modes */ |
| 1083 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
| 1084 if ( SDL_modelist[i] != NULL ) { | |
| 1085 for ( j=0; SDL_modelist[i][j]; ++j ) { | |
|
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1086 SDL_free(SDL_modelist[i][j]); |
| 0 | 1087 } |
|
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1088 SDL_free(SDL_modelist[i]); |
| 0 | 1089 SDL_modelist[i] = NULL; |
| 1090 } | |
| 1091 } | |
| 1092 | |
| 1093 /* Clean up the memory bucket list */ | |
| 1094 DGA_FreeHWSurfaces(this); | |
| 1095 | |
|
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1096 /* Restore DPMS and screensaver settings */ |
|
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1097 X11_RestoreScreenSaver(DGA_Display, screensaver_timeout, dpms_enabled); |
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1098 |
| 0 | 1099 /* Close up the display */ |
|
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1100 XCloseDisplay(DGA_Display); |
| 0 | 1101 } |
| 1102 } |