Mercurial > sdl-ios-xcode
annotate src/video/dga/SDL_dgavideo.c @ 3897:37dab4a917c4 SDL-1.2
Check video driver mouse cursor pointers before using them
| author | Patrice Mandin <patmandin@gmail.com> |
|---|---|
| date | Sun, 19 Nov 2006 14:07:32 +0000 |
| parents | cc6bea4bb90d |
| children | c121d94672cb e7ec5ee35d54 |
| 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 /*#define DGA_DEBUG*/ |
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45 |
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46 /* Heheh we're using X11 event code */ |
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47 extern void X11_SaveScreenSaver(Display *display, int *saved_timeout, BOOL *dpms); |
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48 extern void X11_DisableScreenSaver(Display *display); |
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49 extern void X11_RestoreScreenSaver(Display *display, int saved_timeout, BOOL dpms); |
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50 |
| 0 | 51 /* Initialization/Query functions */ |
| 52 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat); | |
| 53 static SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); | |
| 54 static SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); | |
| 55 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, | |
| 56 SDL_Color *colors); | |
| 57 static int DGA_SetGammaRamp(_THIS, Uint16 *ramp); | |
| 58 static void DGA_VideoQuit(_THIS); | |
| 59 | |
| 60 /* Hardware surface functions */ | |
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61 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size); |
| 0 | 62 static void DGA_FreeHWSurfaces(_THIS); |
| 63 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface); | |
| 64 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color); | |
| 65 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst); | |
| 66 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface); | |
| 67 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface); | |
| 68 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface); | |
| 69 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface); | |
| 70 | |
| 71 /* DGA driver bootstrap functions */ | |
| 72 | |
| 73 static int DGA_Available(void) | |
| 74 { | |
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75 const char *display = NULL; |
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76 Display *dpy = NULL; |
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77 int available = 0; |
| 0 | 78 |
| 79 /* The driver is available is available if the display is local | |
| 80 and the DGA 2.0+ extension is available, and we can map mem. | |
| 81 */ | |
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82 if ( SDL_X11_LoadSymbols() ) { |
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83 if ( (SDL_strncmp(XDisplayName(display), ":", 1) == 0) || |
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84 (SDL_strncmp(XDisplayName(display), "unix:", 5) == 0) ) { |
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85 dpy = XOpenDisplay(display); |
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86 if ( dpy ) { |
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87 int events, errors, major, minor; |
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88 |
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89 if ( SDL_NAME(XDGAQueryExtension)(dpy, &events, &errors) && |
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90 SDL_NAME(XDGAQueryVersion)(dpy, &major, &minor) ) { |
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91 int screen; |
| 0 | 92 |
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93 screen = DefaultScreen(dpy); |
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94 if ( (major >= 2) && |
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95 SDL_NAME(XDGAOpenFramebuffer)(dpy, screen) ) { |
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96 available = 1; |
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97 SDL_NAME(XDGACloseFramebuffer)(dpy, screen); |
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98 } |
| 0 | 99 } |
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100 XCloseDisplay(dpy); |
| 0 | 101 } |
| 102 } | |
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103 SDL_X11_UnloadSymbols(); |
| 0 | 104 } |
| 105 return(available); | |
| 106 } | |
| 107 | |
| 108 static void DGA_DeleteDevice(SDL_VideoDevice *device) | |
| 109 { | |
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110 if (device != NULL) { |
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111 SDL_free(device->hidden); |
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112 SDL_free(device); |
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113 SDL_X11_UnloadSymbols(); |
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114 } |
| 0 | 115 } |
| 116 | |
| 117 static SDL_VideoDevice *DGA_CreateDevice(int devindex) | |
| 118 { | |
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119 SDL_VideoDevice *device = NULL; |
| 0 | 120 |
| 121 /* Initialize all variables that we clean on shutdown */ | |
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122 if (SDL_X11_LoadSymbols()) { |
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123 device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
| 0 | 124 if ( device ) { |
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125 SDL_memset(device, 0, (sizeof *device)); |
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126 device->hidden = (struct SDL_PrivateVideoData *) |
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127 SDL_malloc((sizeof *device->hidden)); |
| 0 | 128 } |
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129 if ( (device == NULL) || (device->hidden == NULL) ) { |
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130 SDL_OutOfMemory(); |
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131 if ( device ) { |
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132 SDL_free(device); |
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133 } |
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134 SDL_X11_UnloadSymbols(); |
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135 return(0); |
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136 } |
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137 SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
| 0 | 138 |
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139 /* Set the function pointers */ |
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140 device->VideoInit = DGA_VideoInit; |
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141 device->ListModes = DGA_ListModes; |
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142 device->SetVideoMode = DGA_SetVideoMode; |
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143 device->SetColors = DGA_SetColors; |
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144 device->UpdateRects = NULL; |
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145 device->VideoQuit = DGA_VideoQuit; |
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146 device->AllocHWSurface = DGA_AllocHWSurface; |
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147 device->CheckHWBlit = DGA_CheckHWBlit; |
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148 device->FillHWRect = DGA_FillHWRect; |
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149 device->SetHWColorKey = NULL; |
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150 device->SetHWAlpha = NULL; |
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151 device->LockHWSurface = DGA_LockHWSurface; |
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152 device->UnlockHWSurface = DGA_UnlockHWSurface; |
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153 device->FlipHWSurface = DGA_FlipHWSurface; |
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154 device->FreeHWSurface = DGA_FreeHWSurface; |
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155 device->SetGammaRamp = DGA_SetGammaRamp; |
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156 device->GetGammaRamp = NULL; |
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157 device->SetCaption = NULL; |
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158 device->SetIcon = NULL; |
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159 device->IconifyWindow = NULL; |
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160 device->GrabInput = NULL; |
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161 device->GetWMInfo = NULL; |
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162 device->InitOSKeymap = DGA_InitOSKeymap; |
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163 device->PumpEvents = DGA_PumpEvents; |
| 0 | 164 |
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165 device->free = DGA_DeleteDevice; |
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166 } |
| 0 | 167 |
| 168 return device; | |
| 169 } | |
| 170 | |
| 171 VideoBootStrap DGA_bootstrap = { | |
| 172 "dga", "XFree86 DGA 2.0", | |
| 173 DGA_Available, DGA_CreateDevice | |
| 174 }; | |
| 175 | |
| 176 static int DGA_AddMode(_THIS, int bpp, int w, int h) | |
| 177 { | |
| 178 SDL_Rect *mode; | |
| 1800 | 179 int index; |
| 0 | 180 int next_mode; |
| 181 | |
| 182 /* Check to see if we already have this mode */ | |
| 183 if ( bpp < 8 ) { /* Not supported */ | |
| 184 return(0); | |
| 185 } | |
| 186 index = ((bpp+7)/8)-1; | |
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187 if ( SDL_nummodes[index] > 0 ) { |
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188 mode = SDL_modelist[index][SDL_nummodes[index]-1]; |
| 0 | 189 if ( (mode->w == w) && (mode->h == h) ) { |
| 190 return(0); | |
| 191 } | |
| 192 } | |
| 193 | |
| 194 /* Set up the new video mode rectangle */ | |
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195 mode = (SDL_Rect *)SDL_malloc(sizeof *mode); |
| 0 | 196 if ( mode == NULL ) { |
| 197 SDL_OutOfMemory(); | |
| 198 return(-1); | |
| 199 } | |
| 200 mode->x = 0; | |
| 201 mode->y = 0; | |
| 202 mode->w = w; | |
| 203 mode->h = h; | |
| 204 | |
| 205 /* Allocate the new list of modes, and fill in the new mode */ | |
| 206 next_mode = SDL_nummodes[index]; | |
| 207 SDL_modelist[index] = (SDL_Rect **) | |
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208 SDL_realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *)); |
| 0 | 209 if ( SDL_modelist[index] == NULL ) { |
| 210 SDL_OutOfMemory(); | |
| 211 SDL_nummodes[index] = 0; | |
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212 SDL_free(mode); |
| 0 | 213 return(-1); |
| 214 } | |
| 215 SDL_modelist[index][next_mode] = mode; | |
| 216 SDL_modelist[index][next_mode+1] = NULL; | |
| 217 SDL_nummodes[index]++; | |
| 218 | |
| 219 return(0); | |
| 220 } | |
| 221 | |
| 222 /* This whole function is a hack. :) */ | |
| 223 static Uint32 get_video_size(_THIS) | |
| 224 { | |
| 225 /* This is a non-exported function from libXxf86dga.a */ | |
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226 extern unsigned char *SDL_NAME(XDGAGetMappedMemory)(int screen); |
| 0 | 227 FILE *proc; |
| 228 unsigned long mem; | |
| 229 unsigned start, stop; | |
| 230 char line[BUFSIZ]; | |
| 231 Uint32 size; | |
| 232 | |
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233 mem = (unsigned long)SDL_NAME(XDGAGetMappedMemory)(DGA_Screen); |
| 0 | 234 size = 0; |
| 235 proc = fopen("/proc/self/maps", "r"); | |
| 236 if ( proc ) { | |
| 237 while ( fgets(line, sizeof(line)-1, proc) ) { | |
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238 SDL_sscanf(line, "%x-%x", &start, &stop); |
| 0 | 239 if ( start == mem ) { |
| 240 size = (Uint32)((stop-start)/1024); | |
| 241 break; | |
| 242 } | |
| 243 } | |
| 244 fclose(proc); | |
| 245 } | |
| 246 return(size); | |
| 247 } | |
| 248 | |
| 249 #ifdef DGA_DEBUG | |
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250 static void PrintMode(SDL_NAME(XDGAMode) *mode) |
| 0 | 251 { |
| 252 printf("Mode: %s (%dx%d) at %d bpp (%f refresh, %d pitch) num: %d\n", | |
| 253 mode->name, | |
| 254 mode->viewportWidth, mode->viewportHeight, | |
| 255 mode->depth == 24 ? mode->bitsPerPixel : mode->depth, | |
| 256 mode->verticalRefresh, mode->bytesPerScanline, mode->num); | |
| 257 printf("\tRGB: 0x%8.8x 0x%8.8x 0x%8.8x (%d - %s)\n", | |
| 258 mode->redMask, mode->greenMask, mode->blueMask, | |
| 259 mode->visualClass, | |
| 260 mode->visualClass == TrueColor ? "truecolor" : | |
| 261 mode->visualClass == DirectColor ? "directcolor" : | |
| 262 mode->visualClass == PseudoColor ? "pseudocolor" : "unknown"); | |
| 263 printf("\tFlags: "); | |
| 264 if ( mode->flags & XDGAConcurrentAccess ) | |
| 265 printf(" XDGAConcurrentAccess"); | |
| 266 if ( mode->flags & XDGASolidFillRect ) | |
| 267 printf(" XDGASolidFillRect"); | |
| 268 if ( mode->flags & XDGABlitRect ) | |
| 269 printf(" XDGABlitRect"); | |
| 270 if ( mode->flags & XDGABlitTransRect ) | |
| 271 printf(" XDGABlitTransRect"); | |
| 272 if ( mode->flags & XDGAPixmap ) | |
| 273 printf(" XDGAPixmap"); | |
| 274 if ( mode->flags & XDGAInterlaced ) | |
| 275 printf(" XDGAInterlaced"); | |
| 276 if ( mode->flags & XDGADoublescan ) | |
| 277 printf(" XDGADoublescan"); | |
| 278 if ( mode->viewportFlags & XDGAFlipRetrace ) | |
| 279 printf(" XDGAFlipRetrace"); | |
| 280 if ( mode->viewportFlags & XDGAFlipImmediate ) | |
| 281 printf(" XDGAFlipImmediate"); | |
| 282 printf("\n"); | |
| 283 } | |
| 284 #endif /* DGA_DEBUG */ | |
| 285 | |
| 286 static int cmpmodes(const void *va, const void *vb) | |
| 287 { | |
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288 const SDL_NAME(XDGAMode) *a = (const SDL_NAME(XDGAMode) *)va; |
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289 const SDL_NAME(XDGAMode) *b = (const SDL_NAME(XDGAMode) *)vb; |
| 0 | 290 |
| 291 if ( (a->viewportWidth == b->viewportWidth) && | |
| 292 (b->viewportHeight == a->viewportHeight) ) { | |
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293 /* Prefer 32 bpp over 24 bpp, 16 bpp over 15 bpp */ |
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294 int a_bpp = a->depth == 24 ? a->bitsPerPixel : a->depth; |
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295 int b_bpp = b->depth == 24 ? b->bitsPerPixel : b->depth; |
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296 if ( a_bpp != b_bpp ) { |
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297 return b_bpp - a_bpp; |
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298 } |
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299 /* Prefer DirectColor visuals, for gamma support */ |
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300 if ( a->visualClass == DirectColor && b->visualClass != DirectColor ) |
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301 return -1; |
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302 if ( b->visualClass == DirectColor && a->visualClass != DirectColor ) |
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303 return 1; |
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304 /* Maintain server refresh rate sorting */ |
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305 return a->num - b->num; |
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306 } else if ( a->viewportWidth == b->viewportWidth ) { |
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307 return b->viewportHeight - a->viewportHeight; |
| 0 | 308 } else { |
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309 return b->viewportWidth - a->viewportWidth; |
| 0 | 310 } |
| 311 } | |
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312 static void UpdateHWInfo(_THIS, SDL_NAME(XDGAMode) *mode) |
| 0 | 313 { |
| 314 this->info.wm_available = 0; | |
| 315 this->info.hw_available = 1; | |
| 316 if ( mode->flags & XDGABlitRect ) { | |
| 317 this->info.blit_hw = 1; | |
| 318 } else { | |
| 319 this->info.blit_hw = 0; | |
| 320 } | |
| 321 if ( mode->flags & XDGABlitTransRect ) { | |
| 322 this->info.blit_hw_CC = 1; | |
| 323 } else { | |
| 324 this->info.blit_hw_CC = 0; | |
| 325 } | |
| 326 if ( mode->flags & XDGASolidFillRect ) { | |
| 327 this->info.blit_fill = 1; | |
| 328 } else { | |
| 329 this->info.blit_fill = 0; | |
| 330 } | |
| 331 this->info.video_mem = get_video_size(this); | |
| 332 } | |
| 333 | |
| 334 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat) | |
| 335 { | |
| 336 const char *display; | |
| 337 int event_base, error_base; | |
| 338 int major_version, minor_version; | |
| 339 Visual *visual; | |
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340 SDL_NAME(XDGAMode) *modes; |
| 0 | 341 int i, num_modes; |
| 342 | |
| 343 /* Open the X11 display */ | |
| 344 display = NULL; /* Get it from DISPLAY environment variable */ | |
| 345 | |
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346 DGA_Display = XOpenDisplay(display); |
| 0 | 347 if ( DGA_Display == NULL ) { |
| 348 SDL_SetError("Couldn't open X11 display"); | |
| 349 return(-1); | |
| 350 } | |
| 351 | |
| 352 /* Check for the DGA extension */ | |
|
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353 if ( ! SDL_NAME(XDGAQueryExtension)(DGA_Display, &event_base, &error_base) || |
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354 ! SDL_NAME(XDGAQueryVersion)(DGA_Display, &major_version, &minor_version) ) { |
| 0 | 355 SDL_SetError("DGA extension not available"); |
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356 XCloseDisplay(DGA_Display); |
| 0 | 357 return(-1); |
| 358 } | |
| 359 if ( major_version < 2 ) { | |
| 360 SDL_SetError("DGA driver requires DGA 2.0 or newer"); | |
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361 XCloseDisplay(DGA_Display); |
| 0 | 362 return(-1); |
| 363 } | |
| 364 DGA_event_base = event_base; | |
| 365 | |
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366 /* Determine the current screen size */ |
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367 this->info.current_w = DisplayWidth(DGA_Display, DGA_Screen); |
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368 this->info.current_h = DisplayHeight(DGA_Display, DGA_Screen); |
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369 |
| 0 | 370 /* Determine the current screen depth */ |
| 371 visual = DefaultVisual(DGA_Display, DGA_Screen); | |
| 372 { | |
| 373 XPixmapFormatValues *pix_format; | |
| 374 int i, num_formats; | |
| 375 | |
| 376 vformat->BitsPerPixel = DefaultDepth(DGA_Display, DGA_Screen); | |
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377 pix_format = XListPixmapFormats(DGA_Display, &num_formats); |
| 0 | 378 if ( pix_format == NULL ) { |
| 379 SDL_SetError("Couldn't determine screen formats"); | |
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380 XCloseDisplay(DGA_Display); |
| 0 | 381 return(-1); |
| 382 } | |
| 383 for ( i=0; i<num_formats; ++i ) { | |
| 384 if ( vformat->BitsPerPixel == pix_format[i].depth ) | |
| 385 break; | |
| 386 } | |
| 387 if ( i != num_formats ) | |
| 388 vformat->BitsPerPixel = pix_format[i].bits_per_pixel; | |
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389 XFree((char *)pix_format); |
| 0 | 390 } |
| 391 if ( vformat->BitsPerPixel > 8 ) { | |
| 392 vformat->Rmask = visual->red_mask; | |
| 393 vformat->Gmask = visual->green_mask; | |
| 394 vformat->Bmask = visual->blue_mask; | |
| 395 } | |
| 396 | |
| 397 /* Open access to the framebuffer */ | |
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398 if ( ! SDL_NAME(XDGAOpenFramebuffer)(DGA_Display, DGA_Screen) ) { |
| 0 | 399 SDL_SetError("Unable to map the video memory"); |
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400 XCloseDisplay(DGA_Display); |
| 0 | 401 return(-1); |
| 402 } | |
| 403 | |
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404 /* Save DPMS and screensaver settings */ |
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405 X11_SaveScreenSaver(DGA_Display, &screensaver_timeout, &dpms_enabled); |
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406 X11_DisableScreenSaver(DGA_Display); |
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407 |
| 0 | 408 /* Query for the list of available video modes */ |
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409 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
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410 SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes); |
| 0 | 411 for ( i=0; i<num_modes; ++i ) { |
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412 if ( ((modes[i].visualClass == PseudoColor) || |
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413 (modes[i].visualClass == DirectColor) || |
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414 (modes[i].visualClass == TrueColor)) && |
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415 !(modes[i].flags & (XDGAInterlaced|XDGADoublescan)) ) { |
| 0 | 416 #ifdef DGA_DEBUG |
|
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417 PrintMode(&modes[i]); |
| 0 | 418 #endif |
| 419 DGA_AddMode(this, modes[i].bitsPerPixel, | |
| 420 modes[i].viewportWidth, | |
| 421 modes[i].viewportHeight); | |
| 422 } | |
| 423 } | |
| 424 UpdateHWInfo(this, modes); | |
|
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425 XFree(modes); |
| 0 | 426 |
| 427 /* Create the hardware surface lock mutex */ | |
| 428 hw_lock = SDL_CreateMutex(); | |
| 429 if ( hw_lock == NULL ) { | |
| 430 SDL_SetError("Unable to create lock mutex"); | |
| 431 DGA_VideoQuit(this); | |
| 432 return(-1); | |
| 433 } | |
| 434 | |
|
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435 #ifdef LOCK_DGA_DISPLAY |
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436 /* Create the event lock so we're thread-safe.. :-/ */ |
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437 event_lock = SDL_CreateMutex(); |
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438 #endif /* LOCK_DGA_DISPLAY */ |
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439 |
| 0 | 440 /* We're done! */ |
| 441 return(0); | |
| 442 } | |
| 443 | |
| 444 SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) | |
| 445 { | |
| 446 return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); | |
| 447 } | |
| 448 | |
| 449 /* Various screen update functions available */ | |
| 450 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); | |
| 451 | |
| 452 SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, | |
| 453 int width, int height, int bpp, Uint32 flags) | |
| 454 { | |
|
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455 SDL_NAME(XDGAMode) *modes; |
| 0 | 456 int i, num_modes; |
|
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457 SDL_NAME(XDGADevice) *mode; |
| 0 | 458 int screen_len; |
| 459 Uint8 *surfaces_mem; | |
| 460 int surfaces_len; | |
| 461 | |
| 462 /* Free any previous colormap */ | |
| 463 if ( DGA_colormap ) { | |
|
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464 XFreeColormap(DGA_Display, DGA_colormap); |
| 0 | 465 DGA_colormap = 0; |
| 466 } | |
| 467 | |
| 468 /* Search for a matching video mode */ | |
|
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469 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
|
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470 SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes); |
| 0 | 471 for ( i=0; i<num_modes; ++i ) { |
| 472 int depth; | |
| 473 | |
| 474 depth = modes[i].depth; | |
| 475 if ( depth == 24 ) { /* Distinguish between 24 and 32 bpp */ | |
| 476 depth = modes[i].bitsPerPixel; | |
| 477 } | |
| 478 if ( (depth == bpp) && | |
| 479 (modes[i].viewportWidth == width) && | |
| 480 (modes[i].viewportHeight == height) && | |
| 481 ((modes[i].visualClass == PseudoColor) || | |
| 482 (modes[i].visualClass == DirectColor) || | |
|
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483 (modes[i].visualClass == TrueColor)) && |
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484 !(modes[i].flags & (XDGAInterlaced|XDGADoublescan)) ) { |
| 0 | 485 break; |
| 486 } | |
| 487 } | |
| 488 if ( i == num_modes ) { | |
| 489 SDL_SetError("No matching video mode found"); | |
| 490 return(NULL); | |
| 491 } | |
|
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492 #ifdef DGA_DEBUG |
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493 PrintMode(&modes[i]); |
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494 #endif |
| 0 | 495 |
| 496 /* Set the video mode */ | |
|
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497 mode = SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, modes[i].num); |
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498 XFree(modes); |
| 0 | 499 if ( mode == NULL ) { |
| 500 SDL_SetError("Unable to switch to requested mode"); | |
| 501 return(NULL); | |
| 502 } | |
|
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503 DGA_visualClass = mode->mode.visualClass; |
| 0 | 504 memory_base = (Uint8 *)mode->data; |
| 505 memory_pitch = mode->mode.bytesPerScanline; | |
| 506 | |
| 507 /* Set up the new mode framebuffer */ | |
| 508 current->flags = (SDL_FULLSCREEN|SDL_HWSURFACE); | |
| 509 current->w = mode->mode.viewportWidth; | |
| 510 current->h = mode->mode.viewportHeight; | |
| 511 current->pitch = memory_pitch; | |
| 512 current->pixels = memory_base; | |
| 513 if ( ! SDL_ReallocFormat(current, mode->mode.bitsPerPixel, | |
| 514 mode->mode.redMask, | |
| 515 mode->mode.greenMask, | |
| 516 mode->mode.blueMask, 0) ) { | |
| 517 return(NULL); | |
| 518 } | |
| 519 screen_len = current->h*current->pitch; | |
| 520 | |
| 521 /* Create a colormap if necessary */ | |
| 522 if ( (DGA_visualClass == PseudoColor) || | |
| 523 (DGA_visualClass == DirectColor) ) { | |
|
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524 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
| 0 | 525 mode, AllocAll); |
| 526 if ( DGA_visualClass == PseudoColor ) { | |
| 527 current->flags |= SDL_HWPALETTE; | |
| 528 } else { | |
| 529 /* Initialize the colormap to the identity mapping */ | |
| 530 SDL_GetGammaRamp(0, 0, 0); | |
| 531 this->screen = current; | |
| 532 DGA_SetGammaRamp(this, this->gamma); | |
| 533 this->screen = NULL; | |
| 534 } | |
| 535 } else { | |
|
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536 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
| 0 | 537 mode, AllocNone); |
| 538 } | |
|
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539 SDL_NAME(XDGAInstallColormap)(DGA_Display, DGA_Screen, DGA_colormap); |
| 0 | 540 |
| 541 /* Update the hardware capabilities */ | |
| 542 UpdateHWInfo(this, &mode->mode); | |
| 543 | |
| 544 /* Set up the information for hardware surfaces */ | |
| 545 surfaces_mem = (Uint8 *)current->pixels + screen_len; | |
| 546 surfaces_len = (mode->mode.imageHeight*current->pitch - screen_len); | |
| 547 | |
| 548 /* Update for double-buffering, if we can */ | |
|
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549 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, 0, 0, XDGAFlipRetrace); |
| 0 | 550 if ( flags & SDL_DOUBLEBUF ) { |
| 551 if ( mode->mode.imageHeight >= (current->h*2) ) { | |
| 552 current->flags |= SDL_DOUBLEBUF; | |
| 553 flip_page = 0; | |
| 554 flip_yoffset[0] = 0; | |
| 555 flip_yoffset[1] = current->h; | |
| 556 flip_address[0] = memory_base; | |
| 557 flip_address[1] = memory_base+screen_len; | |
| 558 surfaces_mem += screen_len; | |
| 559 surfaces_len -= screen_len; | |
| 560 } | |
| 561 } | |
| 562 | |
| 563 /* Allocate memory tracking for hardware surfaces */ | |
| 564 DGA_FreeHWSurfaces(this); | |
| 565 if ( surfaces_len < 0 ) { | |
| 566 surfaces_len = 0; | |
| 567 } | |
|
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568 DGA_InitHWSurfaces(this, current, surfaces_mem, surfaces_len); |
| 0 | 569 |
|
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570 /* Expose the back buffer as surface memory */ |
|
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571 if ( current->flags & SDL_DOUBLEBUF ) { |
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572 this->screen = current; |
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573 DGA_FlipHWSurface(this, current); |
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574 this->screen = NULL; |
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575 } |
|
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576 |
| 0 | 577 /* Set the update rectangle function */ |
| 578 this->UpdateRects = DGA_DirectUpdate; | |
| 579 | |
| 580 /* Enable mouse and keyboard support */ | |
| 581 { long input_mask; | |
| 582 input_mask = (KeyPressMask | KeyReleaseMask); | |
| 583 input_mask |= (ButtonPressMask | ButtonReleaseMask); | |
| 584 input_mask |= PointerMotionMask; | |
|
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585 SDL_NAME(XDGASelectInput)(DGA_Display, DGA_Screen, input_mask); |
| 0 | 586 } |
| 587 | |
| 588 /* We're done */ | |
| 589 return(current); | |
| 590 } | |
| 591 | |
| 592 #ifdef DGA_DEBUG | |
| 593 static void DGA_DumpHWSurfaces(_THIS) | |
| 594 { | |
| 595 vidmem_bucket *bucket; | |
| 596 | |
| 597 printf("Memory left: %d (%d total)\n", surfaces_memleft, surfaces_memtotal); | |
| 598 printf("\n"); | |
| 599 printf(" Base Size\n"); | |
| 600 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { | |
| 601 printf("Bucket: %p, %d (%s)\n", bucket->base, bucket->size, bucket->used ? "used" : "free"); | |
| 602 if ( bucket->prev ) { | |
| 603 if ( bucket->base != bucket->prev->base+bucket->prev->size ) { | |
| 604 printf("Warning, corrupt bucket list! (prev)\n"); | |
| 605 } | |
| 606 } else { | |
| 607 if ( bucket != &surfaces ) { | |
| 608 printf("Warning, corrupt bucket list! (!prev)\n"); | |
| 609 } | |
| 610 } | |
| 611 if ( bucket->next ) { | |
| 612 if ( bucket->next->base != bucket->base+bucket->size ) { | |
| 613 printf("Warning, corrupt bucket list! (next)\n"); | |
| 614 } | |
| 615 } | |
| 616 } | |
| 617 printf("\n"); | |
| 618 } | |
| 619 #endif | |
| 620 | |
|
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621 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size) |
| 0 | 622 { |
|
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623 vidmem_bucket *bucket; |
|
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624 |
| 0 | 625 surfaces_memtotal = size; |
| 626 surfaces_memleft = size; | |
|
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627 |
|
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|
628 if ( surfaces_memleft > 0 ) { |
|
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629 bucket = (vidmem_bucket *)SDL_malloc(sizeof(*bucket)); |
|
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630 if ( bucket == NULL ) { |
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631 SDL_OutOfMemory(); |
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632 return(-1); |
|
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633 } |
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634 bucket->prev = &surfaces; |
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635 bucket->used = 0; |
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636 bucket->dirty = 0; |
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637 bucket->base = base; |
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638 bucket->size = size; |
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639 bucket->next = NULL; |
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640 } else { |
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641 bucket = NULL; |
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642 } |
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643 |
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644 surfaces.prev = NULL; |
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645 surfaces.used = 1; |
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646 surfaces.dirty = 0; |
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647 surfaces.base = screen->pixels; |
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648 surfaces.size = (unsigned int)((long)base - (long)surfaces.base); |
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649 surfaces.next = bucket; |
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650 screen->hwdata = (struct private_hwdata *)&surfaces; |
| 0 | 651 return(0); |
| 652 } | |
| 653 static void DGA_FreeHWSurfaces(_THIS) | |
| 654 { | |
| 655 vidmem_bucket *bucket, *freeable; | |
| 656 | |
| 657 bucket = surfaces.next; | |
| 658 while ( bucket ) { | |
| 659 freeable = bucket; | |
| 660 bucket = bucket->next; | |
|
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661 SDL_free(freeable); |
| 0 | 662 } |
| 663 surfaces.next = NULL; | |
| 664 } | |
| 665 | |
|
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666 static __inline__ void DGA_AddBusySurface(SDL_Surface *surface) |
|
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667 { |
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668 ((vidmem_bucket *)surface->hwdata)->dirty = 1; |
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669 } |
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670 |
|
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671 static __inline__ int DGA_IsSurfaceBusy(SDL_Surface *surface) |
|
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672 { |
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673 return ((vidmem_bucket *)surface->hwdata)->dirty; |
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674 } |
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675 |
|
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676 static __inline__ void DGA_WaitBusySurfaces(_THIS) |
|
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677 { |
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678 vidmem_bucket *bucket; |
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679 |
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680 /* Wait for graphic operations to complete */ |
|
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681 SDL_NAME(XDGASync)(DGA_Display, DGA_Screen); |
|
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682 |
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683 /* Clear all surface dirty bits */ |
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684 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
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685 bucket->dirty = 0; |
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686 } |
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687 } |
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|
688 |
| 0 | 689 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface) |
| 690 { | |
| 691 vidmem_bucket *bucket; | |
| 692 int size; | |
| 693 int extra; | |
|
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694 int retval = 0; |
| 0 | 695 |
| 696 /* Temporarily, we only allow surfaces the same width as display. | |
| 697 Some blitters require the pitch between two hardware surfaces | |
| 698 to be the same. Others have interesting alignment restrictions. | |
| 699 */ | |
| 700 if ( surface->pitch > SDL_VideoSurface->pitch ) { | |
| 701 SDL_SetError("Surface requested wider than screen"); | |
| 702 return(-1); | |
| 703 } | |
| 704 surface->pitch = SDL_VideoSurface->pitch; | |
| 705 size = surface->h * surface->pitch; | |
| 706 #ifdef DGA_DEBUG | |
| 707 fprintf(stderr, "Allocating bucket of %d bytes\n", size); | |
| 708 #endif | |
|
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709 LOCK_DISPLAY(); |
| 0 | 710 |
| 711 /* Quick check for available mem */ | |
| 712 if ( size > surfaces_memleft ) { | |
| 713 SDL_SetError("Not enough video memory"); | |
|
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714 retval = -1; |
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|
715 goto done; |
| 0 | 716 } |
| 717 | |
| 718 /* Search for an empty bucket big enough */ | |
| 719 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { | |
| 720 if ( ! bucket->used && (size <= bucket->size) ) { | |
| 721 break; | |
| 722 } | |
| 723 } | |
| 724 if ( bucket == NULL ) { | |
| 725 SDL_SetError("Video memory too fragmented"); | |
|
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726 retval = -1; |
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727 goto done; |
| 0 | 728 } |
| 729 | |
| 730 /* Create a new bucket for left-over memory */ | |
| 731 extra = (bucket->size - size); | |
| 732 if ( extra ) { | |
| 733 vidmem_bucket *newbucket; | |
| 734 | |
| 735 #ifdef DGA_DEBUG | |
| 736 fprintf(stderr, "Adding new free bucket of %d bytes\n", extra); | |
| 737 #endif | |
|
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738 newbucket = (vidmem_bucket *)SDL_malloc(sizeof(*newbucket)); |
| 0 | 739 if ( newbucket == NULL ) { |
| 740 SDL_OutOfMemory(); | |
|
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741 retval = -1; |
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|
742 goto done; |
| 0 | 743 } |
| 744 newbucket->prev = bucket; | |
| 745 newbucket->used = 0; | |
| 746 newbucket->base = bucket->base+size; | |
| 747 newbucket->size = extra; | |
| 748 newbucket->next = bucket->next; | |
| 749 if ( bucket->next ) { | |
| 750 bucket->next->prev = newbucket; | |
| 751 } | |
| 752 bucket->next = newbucket; | |
| 753 } | |
| 754 | |
| 755 /* Set the current bucket values and return it! */ | |
| 756 bucket->used = 1; | |
| 757 bucket->size = size; | |
|
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758 bucket->dirty = 0; |
| 0 | 759 #ifdef DGA_DEBUG |
| 760 fprintf(stderr, "Allocated %d bytes at %p\n", bucket->size, bucket->base); | |
| 761 #endif | |
| 762 surfaces_memleft -= size; | |
| 763 surface->flags |= SDL_HWSURFACE; | |
| 764 surface->pixels = bucket->base; | |
|
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765 surface->hwdata = (struct private_hwdata *)bucket; |
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|
766 done: |
|
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|
767 UNLOCK_DISPLAY(); |
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|
768 return(retval); |
| 0 | 769 } |
| 770 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface) | |
| 771 { | |
| 772 vidmem_bucket *bucket, *freeable; | |
| 773 | |
| 1786 | 774 /* Wait for any pending operations involving this surface */ |
| 775 if ( DGA_IsSurfaceBusy(surface) ) { | |
| 776 LOCK_DISPLAY(); | |
| 777 DGA_WaitBusySurfaces(this); | |
| 778 UNLOCK_DISPLAY(); | |
| 779 } | |
| 780 | |
| 0 | 781 /* Look for the bucket in the current list */ |
|
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782 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
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783 if ( bucket == (vidmem_bucket *)surface->hwdata ) { |
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|
784 break; |
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785 } |
| 0 | 786 } |
|
102
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787 if ( bucket && bucket->used ) { |
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788 /* Add the memory back to the total */ |
| 0 | 789 #ifdef DGA_DEBUG |
| 790 printf("Freeing bucket of %d bytes\n", bucket->size); | |
| 791 #endif | |
|
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792 surfaces_memleft += bucket->size; |
| 0 | 793 |
|
102
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794 /* Can we merge the space with surrounding buckets? */ |
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795 bucket->used = 0; |
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796 if ( bucket->next && ! bucket->next->used ) { |
| 0 | 797 #ifdef DGA_DEBUG |
| 798 printf("Merging with next bucket, for %d total bytes\n", bucket->size+bucket->next->size); | |
| 799 #endif | |
|
102
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800 freeable = bucket->next; |
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|
801 bucket->size += bucket->next->size; |
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802 bucket->next = bucket->next->next; |
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803 if ( bucket->next ) { |
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|
804 bucket->next->prev = bucket; |
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805 } |
|
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806 SDL_free(freeable); |
| 0 | 807 } |
|
102
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|
808 if ( bucket->prev && ! bucket->prev->used ) { |
| 0 | 809 #ifdef DGA_DEBUG |
| 810 printf("Merging with previous bucket, for %d total bytes\n", bucket->prev->size+bucket->size); | |
| 811 #endif | |
|
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diff
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|
812 freeable = bucket; |
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813 bucket->prev->size += bucket->size; |
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|
814 bucket->prev->next = bucket->next; |
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815 if ( bucket->next ) { |
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816 bucket->next->prev = bucket->prev; |
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817 } |
|
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|
818 SDL_free(freeable); |
| 0 | 819 } |
| 820 } | |
| 821 surface->pixels = NULL; | |
|
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822 surface->hwdata = NULL; |
| 0 | 823 } |
| 824 | |
|
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825 static __inline__ void DGA_dst_to_xy(_THIS, SDL_Surface *dst, int *x, int *y) |
| 0 | 826 { |
| 827 *x = (long)((Uint8 *)dst->pixels - memory_base)%memory_pitch; | |
| 828 *y = (long)((Uint8 *)dst->pixels - memory_base)/memory_pitch; | |
| 829 } | |
| 830 | |
| 831 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) | |
| 832 { | |
| 833 int x, y; | |
| 834 unsigned int w, h; | |
| 835 | |
| 836 /* Don't fill the visible part of the screen, wait until flipped */ | |
|
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|
837 LOCK_DISPLAY(); |
| 0 | 838 if ( was_flipped && (dst == this->screen) ) { |
|
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839 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 840 /* Keep waiting for the hardware ... */ ; |
| 841 was_flipped = 0; | |
| 842 } | |
|
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843 DGA_dst_to_xy(this, dst, &x, &y); |
| 0 | 844 x += rect->x; |
| 845 y += rect->y; | |
| 846 w = rect->w; | |
| 847 h = rect->h; | |
| 848 #if 0 | |
| 849 printf("Hardware accelerated rectangle fill: %dx%d at %d,%d\n", w, h, x, y); | |
| 850 #endif | |
|
292
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851 SDL_NAME(XDGAFillRectangle)(DGA_Display, DGA_Screen, x, y, w, h, color); |
|
540
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|
852 if ( !(this->screen->flags & SDL_DOUBLEBUF) ) { |
|
1575
3ba88cb7eb1b
Updated dynamic X11 code. See details in Bugzilla #170.
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changeset
|
853 XFlush(DGA_Display); |
|
540
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|
854 } |
|
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855 DGA_AddBusySurface(dst); |
|
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|
856 UNLOCK_DISPLAY(); |
| 0 | 857 return(0); |
| 858 } | |
| 859 | |
| 860 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, | |
| 861 SDL_Surface *dst, SDL_Rect *dstrect) | |
| 862 { | |
| 863 SDL_VideoDevice *this; | |
| 864 int srcx, srcy; | |
| 865 int dstx, dsty; | |
| 866 unsigned int w, h; | |
| 867 | |
| 868 this = current_video; | |
| 869 /* Don't blit to the visible part of the screen, wait until flipped */ | |
|
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|
870 LOCK_DISPLAY(); |
| 0 | 871 if ( was_flipped && (dst == this->screen) ) { |
|
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Added SDL_LockRect() and SDL_UnlockRect()
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|
872 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 873 /* Keep waiting for the hardware ... */ ; |
| 874 was_flipped = 0; | |
| 875 } | |
|
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876 DGA_dst_to_xy(this, src, &srcx, &srcy); |
| 0 | 877 srcx += srcrect->x; |
| 878 srcy += srcrect->y; | |
|
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879 DGA_dst_to_xy(this, dst, &dstx, &dsty); |
| 0 | 880 dstx += dstrect->x; |
| 881 dsty += dstrect->y; | |
| 882 w = srcrect->w; | |
| 883 h = srcrect->h; | |
| 884 #if 0 | |
| 885 printf("Blitting %dx%d from %d,%d to %d,%d\n", w, h, srcx, srcy, dstx, dsty); | |
| 886 #endif | |
| 887 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
|
292
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888 SDL_NAME(XDGACopyTransparentArea)(DGA_Display, DGA_Screen, |
| 0 | 889 srcx, srcy, w, h, dstx, dsty, src->format->colorkey); |
| 890 } else { | |
|
292
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|
891 SDL_NAME(XDGACopyArea)(DGA_Display, DGA_Screen, |
| 0 | 892 srcx, srcy, w, h, dstx, dsty); |
| 893 } | |
|
540
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Greatly improved X11 DGA video speed (thanks Cezary!)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
894 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
|
895 XFlush(DGA_Display); |
|
540
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|
896 } |
|
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|
897 DGA_AddBusySurface(src); |
|
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898 DGA_AddBusySurface(dst); |
|
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|
899 UNLOCK_DISPLAY(); |
| 0 | 900 return(0); |
| 901 } | |
| 902 | |
| 903 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) | |
| 904 { | |
| 905 int accelerated; | |
| 906 | |
| 907 /* Set initial acceleration on */ | |
| 908 src->flags |= SDL_HWACCEL; | |
| 909 | |
| 910 /* Set the surface attributes */ | |
| 911 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { | |
| 912 if ( ! this->info.blit_hw_A ) { | |
| 913 src->flags &= ~SDL_HWACCEL; | |
| 914 } | |
| 915 } | |
| 916 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 917 if ( ! this->info.blit_hw_CC ) { | |
| 918 src->flags &= ~SDL_HWACCEL; | |
| 919 } | |
| 920 } | |
| 921 | |
| 922 /* Check to see if final surface blit is accelerated */ | |
| 923 accelerated = !!(src->flags & SDL_HWACCEL); | |
| 924 if ( accelerated ) { | |
| 925 src->map->hw_blit = HWAccelBlit; | |
| 926 } | |
| 927 return(accelerated); | |
| 928 } | |
| 929 | |
|
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930 static __inline__ void DGA_WaitFlip(_THIS) |
| 0 | 931 { |
| 932 if ( was_flipped ) { | |
|
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933 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 934 /* Keep waiting for the hardware ... */ ; |
| 935 was_flipped = 0; | |
| 936 } | |
| 937 } | |
| 938 | |
| 939 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface) | |
| 940 { | |
|
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941 if ( surface == this->screen ) { |
| 0 | 942 SDL_mutexP(hw_lock); |
|
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943 LOCK_DISPLAY(); |
|
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944 if ( DGA_IsSurfaceBusy(surface) ) { |
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945 DGA_WaitBusySurfaces(this); |
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946 } |
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947 DGA_WaitFlip(this); |
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948 UNLOCK_DISPLAY(); |
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949 } else { |
|
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950 if ( DGA_IsSurfaceBusy(surface) ) { |
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951 LOCK_DISPLAY(); |
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952 DGA_WaitBusySurfaces(this); |
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953 UNLOCK_DISPLAY(); |
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954 } |
| 0 | 955 } |
| 956 return(0); | |
| 957 } | |
| 958 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface) | |
| 959 { | |
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960 if ( surface == this->screen ) { |
| 0 | 961 SDL_mutexV(hw_lock); |
| 962 } | |
| 963 } | |
| 964 | |
| 965 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface) | |
| 966 { | |
| 967 /* Wait for vertical retrace and then flip display */ | |
|
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968 LOCK_DISPLAY(); |
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969 if ( DGA_IsSurfaceBusy(this->screen) ) { |
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970 DGA_WaitBusySurfaces(this); |
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971 } |
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972 DGA_WaitFlip(this); |
|
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973 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, |
| 0 | 974 0, flip_yoffset[flip_page], XDGAFlipRetrace); |
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975 XFlush(DGA_Display); |
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976 UNLOCK_DISPLAY(); |
| 0 | 977 was_flipped = 1; |
| 978 flip_page = !flip_page; | |
| 979 | |
| 980 surface->pixels = flip_address[flip_page]; | |
| 981 return(0); | |
| 982 } | |
| 983 | |
| 984 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) | |
| 985 { | |
| 986 /* The application is already updating the visible video memory */ | |
| 987 return; | |
| 988 } | |
| 989 | |
| 990 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) | |
| 991 { | |
| 992 int i; | |
| 993 XColor *xcmap; | |
| 994 | |
| 995 /* This happens on initialization */ | |
| 996 if ( ! DGA_colormap ) { | |
| 997 return(0); | |
| 998 } | |
|
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999 xcmap = SDL_stack_alloc(XColor, ncolors); |
| 0 | 1000 for ( i=0; i<ncolors; ++i ) { |
| 1001 xcmap[i].pixel = firstcolor + i; | |
| 1002 xcmap[i].red = (colors[i].r<<8)|colors[i].r; | |
| 1003 xcmap[i].green = (colors[i].g<<8)|colors[i].g; | |
| 1004 xcmap[i].blue = (colors[i].b<<8)|colors[i].b; | |
| 1005 xcmap[i].flags = (DoRed|DoGreen|DoBlue); | |
| 1006 } | |
|
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1007 LOCK_DISPLAY(); |
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1008 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
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1009 XSync(DGA_Display, False); |
|
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1010 UNLOCK_DISPLAY(); |
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1011 SDL_stack_free(xcmap); |
| 0 | 1012 |
| 1013 /* That was easy. :) */ | |
| 1014 return(1); | |
| 1015 } | |
| 1016 | |
| 1017 int DGA_SetGammaRamp(_THIS, Uint16 *ramp) | |
| 1018 { | |
| 1019 int i, ncolors; | |
| 1020 XColor xcmap[256]; | |
| 1021 | |
| 1022 /* See if actually setting the gamma is supported */ | |
| 1023 if ( DGA_visualClass != DirectColor ) { | |
| 1024 SDL_SetError("Gamma correction not supported on this visual"); | |
| 1025 return(-1); | |
| 1026 } | |
| 1027 | |
| 1028 /* Calculate the appropriate palette for the given gamma ramp */ | |
| 1029 if ( this->screen->format->BitsPerPixel <= 16 ) { | |
| 1030 ncolors = 64; /* Is this right? */ | |
| 1031 } else { | |
| 1032 ncolors = 256; | |
| 1033 } | |
| 1034 for ( i=0; i<ncolors; ++i ) { | |
| 1035 Uint8 c = (256 * i / ncolors); | |
| 1036 xcmap[i].pixel = SDL_MapRGB(this->screen->format, c, c, c); | |
| 1037 xcmap[i].red = ramp[0*256+c]; | |
| 1038 xcmap[i].green = ramp[1*256+c]; | |
| 1039 xcmap[i].blue = ramp[2*256+c]; | |
| 1040 xcmap[i].flags = (DoRed|DoGreen|DoBlue); | |
| 1041 } | |
|
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1042 LOCK_DISPLAY(); |
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1043 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
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1044 XSync(DGA_Display, False); |
|
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1045 UNLOCK_DISPLAY(); |
| 0 | 1046 return(0); |
| 1047 } | |
| 1048 | |
| 1049 void DGA_VideoQuit(_THIS) | |
| 1050 { | |
| 1051 int i, j; | |
| 1052 | |
| 1053 if ( DGA_Display ) { | |
| 1054 /* Free colormap, if necessary */ | |
| 1055 if ( DGA_colormap ) { | |
|
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1056 XFreeColormap(DGA_Display, DGA_colormap); |
| 0 | 1057 DGA_colormap = 0; |
| 1058 } | |
| 1059 | |
| 1060 /* Unmap memory and reset video mode */ | |
|
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1061 SDL_NAME(XDGACloseFramebuffer)(DGA_Display, DGA_Screen); |
| 0 | 1062 if ( this->screen ) { |
| 1063 /* Tell SDL not to free the pixels */ | |
| 1786 | 1064 DGA_FreeHWSurface(this, this->screen); |
| 0 | 1065 } |
|
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1066 SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, 0); |
| 0 | 1067 |
| 1068 /* Clear the lock mutex */ | |
| 1069 if ( hw_lock != NULL ) { | |
| 1070 SDL_DestroyMutex(hw_lock); | |
| 1071 hw_lock = NULL; | |
| 1072 } | |
|
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1073 #ifdef LOCK_DGA_DISPLAY |
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1074 if ( event_lock != NULL ) { |
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1075 SDL_DestroyMutex(event_lock); |
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1076 event_lock = NULL; |
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1077 } |
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1078 #endif /* LOCK_DGA_DISPLAY */ |
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1079 |
| 0 | 1080 /* Clean up defined video modes */ |
| 1081 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
| 1082 if ( SDL_modelist[i] != NULL ) { | |
| 1083 for ( j=0; SDL_modelist[i][j]; ++j ) { | |
|
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1084 SDL_free(SDL_modelist[i][j]); |
| 0 | 1085 } |
|
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1086 SDL_free(SDL_modelist[i]); |
| 0 | 1087 SDL_modelist[i] = NULL; |
| 1088 } | |
| 1089 } | |
| 1090 | |
| 1091 /* Clean up the memory bucket list */ | |
| 1092 DGA_FreeHWSurfaces(this); | |
| 1093 | |
|
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1094 /* Restore DPMS and screensaver settings */ |
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1095 X11_RestoreScreenSaver(DGA_Display, screensaver_timeout, dpms_enabled); |
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1096 |
| 0 | 1097 /* Close up the display */ |
|
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1098 XCloseDisplay(DGA_Display); |
| 0 | 1099 } |
| 1100 } |