Mercurial > sdl-ios-xcode
annotate src/video/dga/SDL_dgavideo.c @ 1601:a79200e79a61
Hopefully fixed up DirectFB detection
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 23 Mar 2006 15:25:30 +0000 |
| parents | 3ba88cb7eb1b |
| children | 14717b52abc0 45669d4efd02 |
| 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 |
| 0 | 44 /* Initialization/Query functions */ |
| 45 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat); | |
| 46 static SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); | |
| 47 static SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); | |
| 48 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, | |
| 49 SDL_Color *colors); | |
| 50 static int DGA_SetGammaRamp(_THIS, Uint16 *ramp); | |
| 51 static void DGA_VideoQuit(_THIS); | |
| 52 | |
| 53 /* Hardware surface functions */ | |
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54 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size); |
| 0 | 55 static void DGA_FreeHWSurfaces(_THIS); |
| 56 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface); | |
| 57 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color); | |
| 58 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst); | |
| 59 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface); | |
| 60 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface); | |
| 61 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface); | |
| 62 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface); | |
| 63 | |
| 64 /* DGA driver bootstrap functions */ | |
| 65 | |
| 66 static int DGA_Available(void) | |
| 67 { | |
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68 const char *display = NULL; |
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69 Display *dpy = NULL; |
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70 int available = 0; |
| 0 | 71 |
| 72 /* The driver is available is available if the display is local | |
| 73 and the DGA 2.0+ extension is available, and we can map mem. | |
| 74 */ | |
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75 if ( SDL_X11_LoadSymbols() ) { |
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76 if ( (SDL_strncmp(XDisplayName(display), ":", 1) == 0) || |
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77 (SDL_strncmp(XDisplayName(display), "unix:", 5) == 0) ) { |
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78 dpy = XOpenDisplay(display); |
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79 if ( dpy ) { |
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80 int events, errors, major, minor; |
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81 |
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82 if ( SDL_NAME(XDGAQueryExtension)(dpy, &events, &errors) && |
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83 SDL_NAME(XDGAQueryVersion)(dpy, &major, &minor) ) { |
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84 int screen; |
| 0 | 85 |
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86 screen = DefaultScreen(dpy); |
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87 if ( (major >= 2) && |
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88 SDL_NAME(XDGAOpenFramebuffer)(dpy, screen) ) { |
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89 available = 1; |
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90 SDL_NAME(XDGACloseFramebuffer)(dpy, screen); |
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91 } |
| 0 | 92 } |
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93 XCloseDisplay(dpy); |
| 0 | 94 } |
| 95 } | |
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96 SDL_X11_UnloadSymbols(); |
| 0 | 97 } |
| 98 return(available); | |
| 99 } | |
| 100 | |
| 101 static void DGA_DeleteDevice(SDL_VideoDevice *device) | |
| 102 { | |
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103 if (device != NULL) { |
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104 SDL_free(device->hidden); |
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105 SDL_free(device); |
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106 SDL_X11_UnloadSymbols(); |
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107 } |
| 0 | 108 } |
| 109 | |
| 110 static SDL_VideoDevice *DGA_CreateDevice(int devindex) | |
| 111 { | |
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112 SDL_VideoDevice *device = NULL; |
| 0 | 113 |
| 114 /* Initialize all variables that we clean on shutdown */ | |
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115 if (SDL_X11_LoadSymbols()) { |
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116 device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
| 0 | 117 if ( device ) { |
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118 SDL_memset(device, 0, (sizeof *device)); |
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119 device->hidden = (struct SDL_PrivateVideoData *) |
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120 SDL_malloc((sizeof *device->hidden)); |
| 0 | 121 } |
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122 if ( (device == NULL) || (device->hidden == NULL) ) { |
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123 SDL_OutOfMemory(); |
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124 if ( device ) { |
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125 SDL_free(device); |
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126 } |
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127 SDL_X11_UnloadSymbols(); |
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128 return(0); |
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129 } |
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130 SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
| 0 | 131 |
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132 /* Set the function pointers */ |
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133 device->VideoInit = DGA_VideoInit; |
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134 device->ListModes = DGA_ListModes; |
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135 device->SetVideoMode = DGA_SetVideoMode; |
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136 device->SetColors = DGA_SetColors; |
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137 device->UpdateRects = NULL; |
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138 device->VideoQuit = DGA_VideoQuit; |
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139 device->AllocHWSurface = DGA_AllocHWSurface; |
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140 device->CheckHWBlit = DGA_CheckHWBlit; |
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141 device->FillHWRect = DGA_FillHWRect; |
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142 device->SetHWColorKey = NULL; |
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143 device->SetHWAlpha = NULL; |
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144 device->LockHWSurface = DGA_LockHWSurface; |
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145 device->UnlockHWSurface = DGA_UnlockHWSurface; |
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146 device->FlipHWSurface = DGA_FlipHWSurface; |
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147 device->FreeHWSurface = DGA_FreeHWSurface; |
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148 device->SetGammaRamp = DGA_SetGammaRamp; |
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149 device->GetGammaRamp = NULL; |
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150 device->SetCaption = NULL; |
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151 device->SetIcon = NULL; |
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152 device->IconifyWindow = NULL; |
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153 device->GrabInput = NULL; |
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154 device->GetWMInfo = NULL; |
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155 device->InitOSKeymap = DGA_InitOSKeymap; |
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156 device->PumpEvents = DGA_PumpEvents; |
| 0 | 157 |
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158 device->free = DGA_DeleteDevice; |
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159 } |
| 0 | 160 |
| 161 return device; | |
| 162 } | |
| 163 | |
| 164 VideoBootStrap DGA_bootstrap = { | |
| 165 "dga", "XFree86 DGA 2.0", | |
| 166 DGA_Available, DGA_CreateDevice | |
| 167 }; | |
| 168 | |
| 169 static int DGA_AddMode(_THIS, int bpp, int w, int h) | |
| 170 { | |
| 171 SDL_Rect *mode; | |
| 172 int i, index; | |
| 173 int next_mode; | |
| 174 | |
| 175 /* Check to see if we already have this mode */ | |
| 176 if ( bpp < 8 ) { /* Not supported */ | |
| 177 return(0); | |
| 178 } | |
| 179 index = ((bpp+7)/8)-1; | |
| 180 for ( i=0; i<SDL_nummodes[index]; ++i ) { | |
| 181 mode = SDL_modelist[index][i]; | |
| 182 if ( (mode->w == w) && (mode->h == h) ) { | |
| 183 return(0); | |
| 184 } | |
| 185 } | |
| 186 | |
| 187 /* Set up the new video mode rectangle */ | |
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188 mode = (SDL_Rect *)SDL_malloc(sizeof *mode); |
| 0 | 189 if ( mode == NULL ) { |
| 190 SDL_OutOfMemory(); | |
| 191 return(-1); | |
| 192 } | |
| 193 mode->x = 0; | |
| 194 mode->y = 0; | |
| 195 mode->w = w; | |
| 196 mode->h = h; | |
| 197 | |
| 198 /* Allocate the new list of modes, and fill in the new mode */ | |
| 199 next_mode = SDL_nummodes[index]; | |
| 200 SDL_modelist[index] = (SDL_Rect **) | |
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201 SDL_realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *)); |
| 0 | 202 if ( SDL_modelist[index] == NULL ) { |
| 203 SDL_OutOfMemory(); | |
| 204 SDL_nummodes[index] = 0; | |
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205 SDL_free(mode); |
| 0 | 206 return(-1); |
| 207 } | |
| 208 SDL_modelist[index][next_mode] = mode; | |
| 209 SDL_modelist[index][next_mode+1] = NULL; | |
| 210 SDL_nummodes[index]++; | |
| 211 | |
| 212 return(0); | |
| 213 } | |
| 214 | |
| 215 /* This whole function is a hack. :) */ | |
| 216 static Uint32 get_video_size(_THIS) | |
| 217 { | |
| 218 /* This is a non-exported function from libXxf86dga.a */ | |
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219 extern unsigned char *SDL_NAME(XDGAGetMappedMemory)(int screen); |
| 0 | 220 FILE *proc; |
| 221 unsigned long mem; | |
| 222 unsigned start, stop; | |
| 223 char line[BUFSIZ]; | |
| 224 Uint32 size; | |
| 225 | |
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226 mem = (unsigned long)SDL_NAME(XDGAGetMappedMemory)(DGA_Screen); |
| 0 | 227 size = 0; |
| 228 proc = fopen("/proc/self/maps", "r"); | |
| 229 if ( proc ) { | |
| 230 while ( fgets(line, sizeof(line)-1, proc) ) { | |
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231 SDL_sscanf(line, "%x-%x", &start, &stop); |
| 0 | 232 if ( start == mem ) { |
| 233 size = (Uint32)((stop-start)/1024); | |
| 234 break; | |
| 235 } | |
| 236 } | |
| 237 fclose(proc); | |
| 238 } | |
| 239 return(size); | |
| 240 } | |
| 241 | |
| 242 #ifdef DGA_DEBUG | |
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243 static void PrintMode(SDL_NAME(XDGAMode) *mode) |
| 0 | 244 { |
| 245 printf("Mode: %s (%dx%d) at %d bpp (%f refresh, %d pitch) num: %d\n", | |
| 246 mode->name, | |
| 247 mode->viewportWidth, mode->viewportHeight, | |
| 248 mode->depth == 24 ? mode->bitsPerPixel : mode->depth, | |
| 249 mode->verticalRefresh, mode->bytesPerScanline, mode->num); | |
| 250 printf("\tRGB: 0x%8.8x 0x%8.8x 0x%8.8x (%d - %s)\n", | |
| 251 mode->redMask, mode->greenMask, mode->blueMask, | |
| 252 mode->visualClass, | |
| 253 mode->visualClass == TrueColor ? "truecolor" : | |
| 254 mode->visualClass == DirectColor ? "directcolor" : | |
| 255 mode->visualClass == PseudoColor ? "pseudocolor" : "unknown"); | |
| 256 printf("\tFlags: "); | |
| 257 if ( mode->flags & XDGAConcurrentAccess ) | |
| 258 printf(" XDGAConcurrentAccess"); | |
| 259 if ( mode->flags & XDGASolidFillRect ) | |
| 260 printf(" XDGASolidFillRect"); | |
| 261 if ( mode->flags & XDGABlitRect ) | |
| 262 printf(" XDGABlitRect"); | |
| 263 if ( mode->flags & XDGABlitTransRect ) | |
| 264 printf(" XDGABlitTransRect"); | |
| 265 if ( mode->flags & XDGAPixmap ) | |
| 266 printf(" XDGAPixmap"); | |
| 267 if ( mode->flags & XDGAInterlaced ) | |
| 268 printf(" XDGAInterlaced"); | |
| 269 if ( mode->flags & XDGADoublescan ) | |
| 270 printf(" XDGADoublescan"); | |
| 271 if ( mode->viewportFlags & XDGAFlipRetrace ) | |
| 272 printf(" XDGAFlipRetrace"); | |
| 273 if ( mode->viewportFlags & XDGAFlipImmediate ) | |
| 274 printf(" XDGAFlipImmediate"); | |
| 275 printf("\n"); | |
| 276 } | |
| 277 #endif /* DGA_DEBUG */ | |
| 278 | |
| 279 static int cmpmodes(const void *va, const void *vb) | |
| 280 { | |
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281 const SDL_NAME(XDGAMode) *a = (const SDL_NAME(XDGAMode) *)va; |
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282 const SDL_NAME(XDGAMode) *b = (const SDL_NAME(XDGAMode) *)vb; |
| 0 | 283 |
| 284 /* Prefer DirectColor visuals for otherwise equal modes */ | |
| 285 if ( (a->viewportWidth == b->viewportWidth) && | |
| 286 (b->viewportHeight == a->viewportHeight) ) { | |
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287 if ( a->visualClass == DirectColor ) |
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288 return -1; |
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289 if ( b->visualClass == DirectColor ) |
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290 return 1; |
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291 return 0; |
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292 } else if ( a->viewportWidth == b->viewportWidth ) { |
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293 return b->viewportHeight - a->viewportHeight; |
| 0 | 294 } else { |
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295 return b->viewportWidth - a->viewportWidth; |
| 0 | 296 } |
| 297 } | |
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298 static void UpdateHWInfo(_THIS, SDL_NAME(XDGAMode) *mode) |
| 0 | 299 { |
| 300 this->info.wm_available = 0; | |
| 301 this->info.hw_available = 1; | |
| 302 if ( mode->flags & XDGABlitRect ) { | |
| 303 this->info.blit_hw = 1; | |
| 304 } else { | |
| 305 this->info.blit_hw = 0; | |
| 306 } | |
| 307 if ( mode->flags & XDGABlitTransRect ) { | |
| 308 this->info.blit_hw_CC = 1; | |
| 309 } else { | |
| 310 this->info.blit_hw_CC = 0; | |
| 311 } | |
| 312 if ( mode->flags & XDGASolidFillRect ) { | |
| 313 this->info.blit_fill = 1; | |
| 314 } else { | |
| 315 this->info.blit_fill = 0; | |
| 316 } | |
| 317 this->info.video_mem = get_video_size(this); | |
| 318 } | |
| 319 | |
| 320 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat) | |
| 321 { | |
| 322 const char *display; | |
| 323 int event_base, error_base; | |
| 324 int major_version, minor_version; | |
| 325 Visual *visual; | |
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326 SDL_NAME(XDGAMode) *modes; |
| 0 | 327 int i, num_modes; |
| 328 | |
| 329 /* Open the X11 display */ | |
| 330 display = NULL; /* Get it from DISPLAY environment variable */ | |
| 331 | |
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332 DGA_Display = XOpenDisplay(display); |
| 0 | 333 if ( DGA_Display == NULL ) { |
| 334 SDL_SetError("Couldn't open X11 display"); | |
| 335 return(-1); | |
| 336 } | |
| 337 | |
| 338 /* Check for the DGA extension */ | |
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339 if ( ! SDL_NAME(XDGAQueryExtension)(DGA_Display, &event_base, &error_base) || |
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340 ! SDL_NAME(XDGAQueryVersion)(DGA_Display, &major_version, &minor_version) ) { |
| 0 | 341 SDL_SetError("DGA extension not available"); |
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342 XCloseDisplay(DGA_Display); |
| 0 | 343 return(-1); |
| 344 } | |
| 345 if ( major_version < 2 ) { | |
| 346 SDL_SetError("DGA driver requires DGA 2.0 or newer"); | |
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347 XCloseDisplay(DGA_Display); |
| 0 | 348 return(-1); |
| 349 } | |
| 350 DGA_event_base = event_base; | |
| 351 | |
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352 /* Determine the current screen size */ |
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353 this->info.current_w = DisplayWidth(DGA_Display, DGA_Screen); |
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354 this->info.current_h = DisplayHeight(DGA_Display, DGA_Screen); |
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355 |
| 0 | 356 /* Determine the current screen depth */ |
| 357 visual = DefaultVisual(DGA_Display, DGA_Screen); | |
| 358 { | |
| 359 XPixmapFormatValues *pix_format; | |
| 360 int i, num_formats; | |
| 361 | |
| 362 vformat->BitsPerPixel = DefaultDepth(DGA_Display, DGA_Screen); | |
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363 pix_format = XListPixmapFormats(DGA_Display, &num_formats); |
| 0 | 364 if ( pix_format == NULL ) { |
| 365 SDL_SetError("Couldn't determine screen formats"); | |
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366 XCloseDisplay(DGA_Display); |
| 0 | 367 return(-1); |
| 368 } | |
| 369 for ( i=0; i<num_formats; ++i ) { | |
| 370 if ( vformat->BitsPerPixel == pix_format[i].depth ) | |
| 371 break; | |
| 372 } | |
| 373 if ( i != num_formats ) | |
| 374 vformat->BitsPerPixel = pix_format[i].bits_per_pixel; | |
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375 XFree((char *)pix_format); |
| 0 | 376 } |
| 377 if ( vformat->BitsPerPixel > 8 ) { | |
| 378 vformat->Rmask = visual->red_mask; | |
| 379 vformat->Gmask = visual->green_mask; | |
| 380 vformat->Bmask = visual->blue_mask; | |
| 381 } | |
| 382 | |
| 383 /* Open access to the framebuffer */ | |
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384 if ( ! SDL_NAME(XDGAOpenFramebuffer)(DGA_Display, DGA_Screen) ) { |
| 0 | 385 SDL_SetError("Unable to map the video memory"); |
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386 XCloseDisplay(DGA_Display); |
| 0 | 387 return(-1); |
| 388 } | |
| 389 | |
| 390 /* Query for the list of available video modes */ | |
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391 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
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392 SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes); |
| 0 | 393 for ( i=0; i<num_modes; ++i ) { |
| 394 #ifdef DGA_DEBUG | |
| 395 PrintMode(&modes[i]); | |
| 396 #endif | |
| 397 if ( (modes[i].visualClass == PseudoColor) || | |
| 398 (modes[i].visualClass == DirectColor) || | |
| 399 (modes[i].visualClass == TrueColor) ) { | |
| 400 DGA_AddMode(this, modes[i].bitsPerPixel, | |
| 401 modes[i].viewportWidth, | |
| 402 modes[i].viewportHeight); | |
| 403 } | |
| 404 } | |
| 405 UpdateHWInfo(this, modes); | |
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406 XFree(modes); |
| 0 | 407 |
| 408 /* Create the hardware surface lock mutex */ | |
| 409 hw_lock = SDL_CreateMutex(); | |
| 410 if ( hw_lock == NULL ) { | |
| 411 SDL_SetError("Unable to create lock mutex"); | |
| 412 DGA_VideoQuit(this); | |
| 413 return(-1); | |
| 414 } | |
| 415 | |
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416 #ifdef LOCK_DGA_DISPLAY |
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417 /* Create the event lock so we're thread-safe.. :-/ */ |
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418 event_lock = SDL_CreateMutex(); |
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419 #endif /* LOCK_DGA_DISPLAY */ |
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420 |
| 0 | 421 /* We're done! */ |
| 422 return(0); | |
| 423 } | |
| 424 | |
| 425 SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) | |
| 426 { | |
| 427 return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); | |
| 428 } | |
| 429 | |
| 430 /* Various screen update functions available */ | |
| 431 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); | |
| 432 | |
| 433 SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, | |
| 434 int width, int height, int bpp, Uint32 flags) | |
| 435 { | |
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436 SDL_NAME(XDGAMode) *modes; |
| 0 | 437 int i, num_modes; |
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438 SDL_NAME(XDGADevice) *mode; |
| 0 | 439 int screen_len; |
| 440 Uint8 *surfaces_mem; | |
| 441 int surfaces_len; | |
| 442 | |
| 443 /* Free any previous colormap */ | |
| 444 if ( DGA_colormap ) { | |
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445 XFreeColormap(DGA_Display, DGA_colormap); |
| 0 | 446 DGA_colormap = 0; |
| 447 } | |
| 448 | |
| 449 /* Search for a matching video mode */ | |
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450 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
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451 SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes); |
| 0 | 452 for ( i=0; i<num_modes; ++i ) { |
| 453 int depth; | |
| 454 | |
| 455 | |
| 456 depth = modes[i].depth; | |
| 457 if ( depth == 24 ) { /* Distinguish between 24 and 32 bpp */ | |
| 458 depth = modes[i].bitsPerPixel; | |
| 459 } | |
| 460 if ( (depth == bpp) && | |
| 461 (modes[i].viewportWidth == width) && | |
| 462 (modes[i].viewportHeight == height) && | |
| 463 ((modes[i].visualClass == PseudoColor) || | |
| 464 (modes[i].visualClass == DirectColor) || | |
| 465 (modes[i].visualClass == TrueColor)) ) { | |
| 466 break; | |
| 467 } | |
| 468 } | |
| 469 if ( i == num_modes ) { | |
| 470 SDL_SetError("No matching video mode found"); | |
| 471 return(NULL); | |
| 472 } | |
| 473 | |
| 474 /* Set the video mode */ | |
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475 mode = SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, modes[i].num); |
|
1575
3ba88cb7eb1b
Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents:
1545
diff
changeset
|
476 XFree(modes); |
| 0 | 477 if ( mode == NULL ) { |
| 478 SDL_SetError("Unable to switch to requested mode"); | |
| 479 return(NULL); | |
| 480 } | |
|
559
b528214c8c9a
Fixed invalid memory access in DGA video driver (thanks ldb!)
Sam Lantinga <slouken@libsdl.org>
parents:
540
diff
changeset
|
481 DGA_visualClass = mode->mode.visualClass; |
| 0 | 482 memory_base = (Uint8 *)mode->data; |
| 483 memory_pitch = mode->mode.bytesPerScanline; | |
| 484 | |
| 485 /* Set up the new mode framebuffer */ | |
| 486 current->flags = (SDL_FULLSCREEN|SDL_HWSURFACE); | |
| 487 current->w = mode->mode.viewportWidth; | |
| 488 current->h = mode->mode.viewportHeight; | |
| 489 current->pitch = memory_pitch; | |
| 490 current->pixels = memory_base; | |
| 491 if ( ! SDL_ReallocFormat(current, mode->mode.bitsPerPixel, | |
| 492 mode->mode.redMask, | |
| 493 mode->mode.greenMask, | |
| 494 mode->mode.blueMask, 0) ) { | |
| 495 return(NULL); | |
| 496 } | |
| 497 screen_len = current->h*current->pitch; | |
| 498 | |
| 499 /* Create a colormap if necessary */ | |
| 500 if ( (DGA_visualClass == PseudoColor) || | |
| 501 (DGA_visualClass == DirectColor) ) { | |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
502 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
| 0 | 503 mode, AllocAll); |
| 504 if ( DGA_visualClass == PseudoColor ) { | |
| 505 current->flags |= SDL_HWPALETTE; | |
| 506 } else { | |
| 507 /* Initialize the colormap to the identity mapping */ | |
| 508 SDL_GetGammaRamp(0, 0, 0); | |
| 509 this->screen = current; | |
| 510 DGA_SetGammaRamp(this, this->gamma); | |
| 511 this->screen = NULL; | |
| 512 } | |
| 513 } else { | |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
514 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
| 0 | 515 mode, AllocNone); |
| 516 } | |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
517 SDL_NAME(XDGAInstallColormap)(DGA_Display, DGA_Screen, DGA_colormap); |
| 0 | 518 |
| 519 /* Update the hardware capabilities */ | |
| 520 UpdateHWInfo(this, &mode->mode); | |
| 521 | |
| 522 /* Set up the information for hardware surfaces */ | |
| 523 surfaces_mem = (Uint8 *)current->pixels + screen_len; | |
| 524 surfaces_len = (mode->mode.imageHeight*current->pitch - screen_len); | |
| 525 | |
| 526 /* Update for double-buffering, if we can */ | |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
527 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, 0, 0, XDGAFlipRetrace); |
| 0 | 528 if ( flags & SDL_DOUBLEBUF ) { |
| 529 if ( mode->mode.imageHeight >= (current->h*2) ) { | |
| 530 current->flags |= SDL_DOUBLEBUF; | |
| 531 flip_page = 0; | |
| 532 flip_yoffset[0] = 0; | |
| 533 flip_yoffset[1] = current->h; | |
| 534 flip_address[0] = memory_base; | |
| 535 flip_address[1] = memory_base+screen_len; | |
| 536 surfaces_mem += screen_len; | |
| 537 surfaces_len -= screen_len; | |
| 538 } | |
| 539 } | |
| 540 | |
| 541 /* Allocate memory tracking for hardware surfaces */ | |
| 542 DGA_FreeHWSurfaces(this); | |
| 543 if ( surfaces_len < 0 ) { | |
| 544 surfaces_len = 0; | |
| 545 } | |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
546 DGA_InitHWSurfaces(this, current, surfaces_mem, surfaces_len); |
| 0 | 547 |
|
202
401f0134f4f9
Fixed crash when using double-buffering with DGA
Sam Lantinga <slouken@libsdl.org>
parents:
105
diff
changeset
|
548 /* Expose the back buffer as surface memory */ |
|
401f0134f4f9
Fixed crash when using double-buffering with DGA
Sam Lantinga <slouken@libsdl.org>
parents:
105
diff
changeset
|
549 if ( current->flags & SDL_DOUBLEBUF ) { |
|
401f0134f4f9
Fixed crash when using double-buffering with DGA
Sam Lantinga <slouken@libsdl.org>
parents:
105
diff
changeset
|
550 this->screen = current; |
|
401f0134f4f9
Fixed crash when using double-buffering with DGA
Sam Lantinga <slouken@libsdl.org>
parents:
105
diff
changeset
|
551 DGA_FlipHWSurface(this, current); |
|
401f0134f4f9
Fixed crash when using double-buffering with DGA
Sam Lantinga <slouken@libsdl.org>
parents:
105
diff
changeset
|
552 this->screen = NULL; |
|
401f0134f4f9
Fixed crash when using double-buffering with DGA
Sam Lantinga <slouken@libsdl.org>
parents:
105
diff
changeset
|
553 } |
|
401f0134f4f9
Fixed crash when using double-buffering with DGA
Sam Lantinga <slouken@libsdl.org>
parents:
105
diff
changeset
|
554 |
| 0 | 555 /* Set the update rectangle function */ |
| 556 this->UpdateRects = DGA_DirectUpdate; | |
| 557 | |
| 558 /* Enable mouse and keyboard support */ | |
| 559 { long input_mask; | |
| 560 input_mask = (KeyPressMask | KeyReleaseMask); | |
| 561 input_mask |= (ButtonPressMask | ButtonReleaseMask); | |
| 562 input_mask |= PointerMotionMask; | |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
563 SDL_NAME(XDGASelectInput)(DGA_Display, DGA_Screen, input_mask); |
| 0 | 564 } |
| 565 | |
| 566 /* We're done */ | |
| 567 return(current); | |
| 568 } | |
| 569 | |
| 570 #ifdef DGA_DEBUG | |
| 571 static void DGA_DumpHWSurfaces(_THIS) | |
| 572 { | |
| 573 vidmem_bucket *bucket; | |
| 574 | |
| 575 printf("Memory left: %d (%d total)\n", surfaces_memleft, surfaces_memtotal); | |
| 576 printf("\n"); | |
| 577 printf(" Base Size\n"); | |
| 578 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { | |
| 579 printf("Bucket: %p, %d (%s)\n", bucket->base, bucket->size, bucket->used ? "used" : "free"); | |
| 580 if ( bucket->prev ) { | |
| 581 if ( bucket->base != bucket->prev->base+bucket->prev->size ) { | |
| 582 printf("Warning, corrupt bucket list! (prev)\n"); | |
| 583 } | |
| 584 } else { | |
| 585 if ( bucket != &surfaces ) { | |
| 586 printf("Warning, corrupt bucket list! (!prev)\n"); | |
| 587 } | |
| 588 } | |
| 589 if ( bucket->next ) { | |
| 590 if ( bucket->next->base != bucket->base+bucket->size ) { | |
| 591 printf("Warning, corrupt bucket list! (next)\n"); | |
| 592 } | |
| 593 } | |
| 594 } | |
| 595 printf("\n"); | |
| 596 } | |
| 597 #endif | |
| 598 | |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
599 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size) |
| 0 | 600 { |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
601 vidmem_bucket *bucket; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
602 |
| 0 | 603 surfaces_memtotal = size; |
| 604 surfaces_memleft = size; | |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
605 |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
606 if ( surfaces_memleft > 0 ) { |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
607 bucket = (vidmem_bucket *)SDL_malloc(sizeof(*bucket)); |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
608 if ( bucket == NULL ) { |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
609 SDL_OutOfMemory(); |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
610 return(-1); |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
611 } |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
612 bucket->prev = &surfaces; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
613 bucket->used = 0; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
614 bucket->dirty = 0; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
615 bucket->base = base; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
616 bucket->size = size; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
617 bucket->next = NULL; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
618 } else { |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
619 bucket = NULL; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
620 } |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
621 |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
622 surfaces.prev = NULL; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
623 surfaces.used = 1; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
624 surfaces.dirty = 0; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
625 surfaces.base = screen->pixels; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
626 surfaces.size = (unsigned int)((long)base - (long)surfaces.base); |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
627 surfaces.next = bucket; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
628 screen->hwdata = (struct private_hwdata *)&surfaces; |
| 0 | 629 return(0); |
| 630 } | |
| 631 static void DGA_FreeHWSurfaces(_THIS) | |
| 632 { | |
| 633 vidmem_bucket *bucket, *freeable; | |
| 634 | |
| 635 bucket = surfaces.next; | |
| 636 while ( bucket ) { | |
| 637 freeable = bucket; | |
| 638 bucket = bucket->next; | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
639 SDL_free(freeable); |
| 0 | 640 } |
| 641 surfaces.next = NULL; | |
| 642 } | |
| 643 | |
|
105
2136ea8953f9
Some minor name changes to clean up
Sam Lantinga <slouken@lokigames.com>
parents:
102
diff
changeset
|
644 static __inline__ void DGA_AddBusySurface(SDL_Surface *surface) |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
645 { |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
646 ((vidmem_bucket *)surface->hwdata)->dirty = 1; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
647 } |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
648 |
|
105
2136ea8953f9
Some minor name changes to clean up
Sam Lantinga <slouken@lokigames.com>
parents:
102
diff
changeset
|
649 static __inline__ int DGA_IsSurfaceBusy(SDL_Surface *surface) |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
650 { |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
651 return ((vidmem_bucket *)surface->hwdata)->dirty; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
652 } |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
653 |
|
105
2136ea8953f9
Some minor name changes to clean up
Sam Lantinga <slouken@lokigames.com>
parents:
102
diff
changeset
|
654 static __inline__ void DGA_WaitBusySurfaces(_THIS) |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
655 { |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
656 vidmem_bucket *bucket; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
657 |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
658 /* Wait for graphic operations to complete */ |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
659 SDL_NAME(XDGASync)(DGA_Display, DGA_Screen); |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
660 |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
661 /* Clear all surface dirty bits */ |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
662 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
663 bucket->dirty = 0; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
664 } |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
665 } |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
666 |
| 0 | 667 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface) |
| 668 { | |
| 669 vidmem_bucket *bucket; | |
| 670 int size; | |
| 671 int extra; | |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
672 int retval = 0; |
| 0 | 673 |
| 674 /* Temporarily, we only allow surfaces the same width as display. | |
| 675 Some blitters require the pitch between two hardware surfaces | |
| 676 to be the same. Others have interesting alignment restrictions. | |
| 677 */ | |
| 678 if ( surface->pitch > SDL_VideoSurface->pitch ) { | |
| 679 SDL_SetError("Surface requested wider than screen"); | |
| 680 return(-1); | |
| 681 } | |
| 682 surface->pitch = SDL_VideoSurface->pitch; | |
| 683 size = surface->h * surface->pitch; | |
| 684 #ifdef DGA_DEBUG | |
| 685 fprintf(stderr, "Allocating bucket of %d bytes\n", size); | |
| 686 #endif | |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
687 LOCK_DISPLAY(); |
| 0 | 688 |
| 689 /* Quick check for available mem */ | |
| 690 if ( size > surfaces_memleft ) { | |
| 691 SDL_SetError("Not enough video memory"); | |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
692 retval = -1; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
693 goto done; |
| 0 | 694 } |
| 695 | |
| 696 /* Search for an empty bucket big enough */ | |
| 697 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { | |
| 698 if ( ! bucket->used && (size <= bucket->size) ) { | |
| 699 break; | |
| 700 } | |
| 701 } | |
| 702 if ( bucket == NULL ) { | |
| 703 SDL_SetError("Video memory too fragmented"); | |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
704 retval = -1; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
705 goto done; |
| 0 | 706 } |
| 707 | |
| 708 /* Create a new bucket for left-over memory */ | |
| 709 extra = (bucket->size - size); | |
| 710 if ( extra ) { | |
| 711 vidmem_bucket *newbucket; | |
| 712 | |
| 713 #ifdef DGA_DEBUG | |
| 714 fprintf(stderr, "Adding new free bucket of %d bytes\n", extra); | |
| 715 #endif | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
716 newbucket = (vidmem_bucket *)SDL_malloc(sizeof(*newbucket)); |
| 0 | 717 if ( newbucket == NULL ) { |
| 718 SDL_OutOfMemory(); | |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
719 retval = -1; |
|
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
720 goto done; |
| 0 | 721 } |
| 722 newbucket->prev = bucket; | |
| 723 newbucket->used = 0; | |
| 724 newbucket->base = bucket->base+size; | |
| 725 newbucket->size = extra; | |
| 726 newbucket->next = bucket->next; | |
| 727 if ( bucket->next ) { | |
| 728 bucket->next->prev = newbucket; | |
| 729 } | |
| 730 bucket->next = newbucket; | |
| 731 } | |
| 732 | |
| 733 /* Set the current bucket values and return it! */ | |
| 734 bucket->used = 1; | |
| 735 bucket->size = size; | |
|
101
825b2fa28e2e
DGA video driver is now thread-safe
Sam Lantinga <slouken@lokigames.com>
parents:
91
diff
changeset
|
736 bucket->dirty = 0; |
| 0 | 737 #ifdef DGA_DEBUG |
| 738 fprintf(stderr, "Allocated %d bytes at %p\n", bucket->size, bucket->base); | |
| 739 #endif | |
| 740 surfaces_memleft -= size; | |
| 741 surface->flags |= SDL_HWSURFACE; | |
| 742 surface->pixels = bucket->base; | |
|
101
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743 surface->hwdata = (struct private_hwdata *)bucket; |
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744 done: |
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745 UNLOCK_DISPLAY(); |
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746 return(retval); |
| 0 | 747 } |
| 748 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface) | |
| 749 { | |
| 750 vidmem_bucket *bucket, *freeable; | |
| 751 | |
| 752 /* Look for the bucket in the current list */ | |
|
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753 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
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754 if ( bucket == (vidmem_bucket *)surface->hwdata ) { |
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755 break; |
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756 } |
| 0 | 757 } |
|
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758 if ( bucket && bucket->used ) { |
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759 /* Add the memory back to the total */ |
| 0 | 760 #ifdef DGA_DEBUG |
| 761 printf("Freeing bucket of %d bytes\n", bucket->size); | |
| 762 #endif | |
|
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763 surfaces_memleft += bucket->size; |
| 0 | 764 |
|
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765 /* Can we merge the space with surrounding buckets? */ |
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766 bucket->used = 0; |
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767 if ( bucket->next && ! bucket->next->used ) { |
| 0 | 768 #ifdef DGA_DEBUG |
| 769 printf("Merging with next bucket, for %d total bytes\n", bucket->size+bucket->next->size); | |
| 770 #endif | |
|
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771 freeable = bucket->next; |
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772 bucket->size += bucket->next->size; |
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773 bucket->next = bucket->next->next; |
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774 if ( bucket->next ) { |
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775 bucket->next->prev = bucket; |
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776 } |
|
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777 SDL_free(freeable); |
| 0 | 778 } |
|
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779 if ( bucket->prev && ! bucket->prev->used ) { |
| 0 | 780 #ifdef DGA_DEBUG |
| 781 printf("Merging with previous bucket, for %d total bytes\n", bucket->prev->size+bucket->size); | |
| 782 #endif | |
|
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783 freeable = bucket; |
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784 bucket->prev->size += bucket->size; |
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785 bucket->prev->next = bucket->next; |
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786 if ( bucket->next ) { |
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787 bucket->next->prev = bucket->prev; |
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788 } |
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789 SDL_free(freeable); |
| 0 | 790 } |
| 791 } | |
| 792 surface->pixels = NULL; | |
|
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793 surface->hwdata = NULL; |
| 0 | 794 } |
| 795 | |
|
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796 static __inline__ void DGA_dst_to_xy(_THIS, SDL_Surface *dst, int *x, int *y) |
| 0 | 797 { |
| 798 *x = (long)((Uint8 *)dst->pixels - memory_base)%memory_pitch; | |
| 799 *y = (long)((Uint8 *)dst->pixels - memory_base)/memory_pitch; | |
| 800 } | |
| 801 | |
| 802 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) | |
| 803 { | |
| 804 int x, y; | |
| 805 unsigned int w, h; | |
| 806 | |
| 807 /* Don't fill the visible part of the screen, wait until flipped */ | |
|
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808 LOCK_DISPLAY(); |
| 0 | 809 if ( was_flipped && (dst == this->screen) ) { |
|
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810 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 811 /* Keep waiting for the hardware ... */ ; |
| 812 was_flipped = 0; | |
| 813 } | |
|
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814 DGA_dst_to_xy(this, dst, &x, &y); |
| 0 | 815 x += rect->x; |
| 816 y += rect->y; | |
| 817 w = rect->w; | |
| 818 h = rect->h; | |
| 819 #if 0 | |
| 820 printf("Hardware accelerated rectangle fill: %dx%d at %d,%d\n", w, h, x, y); | |
| 821 #endif | |
|
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822 SDL_NAME(XDGAFillRectangle)(DGA_Display, DGA_Screen, x, y, w, h, color); |
|
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823 if ( !(this->screen->flags & SDL_DOUBLEBUF) ) { |
|
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824 XFlush(DGA_Display); |
|
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825 } |
|
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826 DGA_AddBusySurface(dst); |
|
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827 UNLOCK_DISPLAY(); |
| 0 | 828 return(0); |
| 829 } | |
| 830 | |
| 831 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, | |
| 832 SDL_Surface *dst, SDL_Rect *dstrect) | |
| 833 { | |
| 834 SDL_VideoDevice *this; | |
| 835 int srcx, srcy; | |
| 836 int dstx, dsty; | |
| 837 unsigned int w, h; | |
| 838 | |
| 839 this = current_video; | |
| 840 /* Don't blit to the visible part of the screen, wait until flipped */ | |
|
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841 LOCK_DISPLAY(); |
| 0 | 842 if ( was_flipped && (dst == this->screen) ) { |
|
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843 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 844 /* Keep waiting for the hardware ... */ ; |
| 845 was_flipped = 0; | |
| 846 } | |
|
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847 DGA_dst_to_xy(this, src, &srcx, &srcy); |
| 0 | 848 srcx += srcrect->x; |
| 849 srcy += srcrect->y; | |
|
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850 DGA_dst_to_xy(this, dst, &dstx, &dsty); |
| 0 | 851 dstx += dstrect->x; |
| 852 dsty += dstrect->y; | |
| 853 w = srcrect->w; | |
| 854 h = srcrect->h; | |
| 855 #if 0 | |
| 856 printf("Blitting %dx%d from %d,%d to %d,%d\n", w, h, srcx, srcy, dstx, dsty); | |
| 857 #endif | |
| 858 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
|
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859 SDL_NAME(XDGACopyTransparentArea)(DGA_Display, DGA_Screen, |
| 0 | 860 srcx, srcy, w, h, dstx, dsty, src->format->colorkey); |
| 861 } else { | |
|
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862 SDL_NAME(XDGACopyArea)(DGA_Display, DGA_Screen, |
| 0 | 863 srcx, srcy, w, h, dstx, dsty); |
| 864 } | |
|
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865 if ( !(this->screen->flags & SDL_DOUBLEBUF) ) { |
|
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866 XFlush(DGA_Display); |
|
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867 } |
|
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868 DGA_AddBusySurface(src); |
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869 DGA_AddBusySurface(dst); |
|
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870 UNLOCK_DISPLAY(); |
| 0 | 871 return(0); |
| 872 } | |
| 873 | |
| 874 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) | |
| 875 { | |
| 876 int accelerated; | |
| 877 | |
| 878 /* Set initial acceleration on */ | |
| 879 src->flags |= SDL_HWACCEL; | |
| 880 | |
| 881 /* Set the surface attributes */ | |
| 882 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { | |
| 883 if ( ! this->info.blit_hw_A ) { | |
| 884 src->flags &= ~SDL_HWACCEL; | |
| 885 } | |
| 886 } | |
| 887 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 888 if ( ! this->info.blit_hw_CC ) { | |
| 889 src->flags &= ~SDL_HWACCEL; | |
| 890 } | |
| 891 } | |
| 892 | |
| 893 /* Check to see if final surface blit is accelerated */ | |
| 894 accelerated = !!(src->flags & SDL_HWACCEL); | |
| 895 if ( accelerated ) { | |
| 896 src->map->hw_blit = HWAccelBlit; | |
| 897 } | |
| 898 return(accelerated); | |
| 899 } | |
| 900 | |
|
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901 static __inline__ void DGA_WaitFlip(_THIS) |
| 0 | 902 { |
| 903 if ( was_flipped ) { | |
|
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904 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 905 /* Keep waiting for the hardware ... */ ; |
| 906 was_flipped = 0; | |
| 907 } | |
| 908 } | |
| 909 | |
| 910 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface) | |
| 911 { | |
|
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912 if ( surface == this->screen ) { |
| 0 | 913 SDL_mutexP(hw_lock); |
|
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914 LOCK_DISPLAY(); |
|
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915 if ( DGA_IsSurfaceBusy(surface) ) { |
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916 DGA_WaitBusySurfaces(this); |
|
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917 } |
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918 DGA_WaitFlip(this); |
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919 UNLOCK_DISPLAY(); |
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920 } else { |
|
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921 if ( DGA_IsSurfaceBusy(surface) ) { |
|
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922 LOCK_DISPLAY(); |
|
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923 DGA_WaitBusySurfaces(this); |
|
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924 UNLOCK_DISPLAY(); |
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925 } |
| 0 | 926 } |
| 927 return(0); | |
| 928 } | |
| 929 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface) | |
| 930 { | |
|
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931 if ( surface == this->screen ) { |
| 0 | 932 SDL_mutexV(hw_lock); |
| 933 } | |
| 934 } | |
| 935 | |
| 936 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface) | |
| 937 { | |
| 938 /* Wait for vertical retrace and then flip display */ | |
|
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939 LOCK_DISPLAY(); |
|
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940 if ( DGA_IsSurfaceBusy(this->screen) ) { |
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941 DGA_WaitBusySurfaces(this); |
|
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942 } |
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943 DGA_WaitFlip(this); |
|
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944 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, |
| 0 | 945 0, flip_yoffset[flip_page], XDGAFlipRetrace); |
|
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946 XFlush(DGA_Display); |
|
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947 UNLOCK_DISPLAY(); |
| 0 | 948 was_flipped = 1; |
| 949 flip_page = !flip_page; | |
| 950 | |
| 951 surface->pixels = flip_address[flip_page]; | |
| 952 return(0); | |
| 953 } | |
| 954 | |
| 955 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) | |
| 956 { | |
| 957 /* The application is already updating the visible video memory */ | |
| 958 return; | |
| 959 } | |
| 960 | |
| 961 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) | |
| 962 { | |
| 963 int i; | |
| 964 XColor *xcmap; | |
| 965 | |
| 966 /* This happens on initialization */ | |
| 967 if ( ! DGA_colormap ) { | |
| 968 return(0); | |
| 969 } | |
|
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970 xcmap = SDL_stack_alloc(XColor, ncolors); |
| 0 | 971 for ( i=0; i<ncolors; ++i ) { |
| 972 xcmap[i].pixel = firstcolor + i; | |
| 973 xcmap[i].red = (colors[i].r<<8)|colors[i].r; | |
| 974 xcmap[i].green = (colors[i].g<<8)|colors[i].g; | |
| 975 xcmap[i].blue = (colors[i].b<<8)|colors[i].b; | |
| 976 xcmap[i].flags = (DoRed|DoGreen|DoBlue); | |
| 977 } | |
|
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978 LOCK_DISPLAY(); |
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979 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
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980 XSync(DGA_Display, False); |
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981 UNLOCK_DISPLAY(); |
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982 SDL_stack_free(xcmap); |
| 0 | 983 |
| 984 /* That was easy. :) */ | |
| 985 return(1); | |
| 986 } | |
| 987 | |
| 988 int DGA_SetGammaRamp(_THIS, Uint16 *ramp) | |
| 989 { | |
| 990 int i, ncolors; | |
| 991 XColor xcmap[256]; | |
| 992 | |
| 993 /* See if actually setting the gamma is supported */ | |
| 994 if ( DGA_visualClass != DirectColor ) { | |
| 995 SDL_SetError("Gamma correction not supported on this visual"); | |
| 996 return(-1); | |
| 997 } | |
| 998 | |
| 999 /* Calculate the appropriate palette for the given gamma ramp */ | |
| 1000 if ( this->screen->format->BitsPerPixel <= 16 ) { | |
| 1001 ncolors = 64; /* Is this right? */ | |
| 1002 } else { | |
| 1003 ncolors = 256; | |
| 1004 } | |
| 1005 for ( i=0; i<ncolors; ++i ) { | |
| 1006 Uint8 c = (256 * i / ncolors); | |
| 1007 xcmap[i].pixel = SDL_MapRGB(this->screen->format, c, c, c); | |
| 1008 xcmap[i].red = ramp[0*256+c]; | |
| 1009 xcmap[i].green = ramp[1*256+c]; | |
| 1010 xcmap[i].blue = ramp[2*256+c]; | |
| 1011 xcmap[i].flags = (DoRed|DoGreen|DoBlue); | |
| 1012 } | |
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1013 LOCK_DISPLAY(); |
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1014 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
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1015 XSync(DGA_Display, False); |
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1016 UNLOCK_DISPLAY(); |
| 0 | 1017 return(0); |
| 1018 } | |
| 1019 | |
| 1020 void DGA_VideoQuit(_THIS) | |
| 1021 { | |
| 1022 int i, j; | |
| 1023 | |
| 1024 if ( DGA_Display ) { | |
| 1025 /* Free colormap, if necessary */ | |
| 1026 if ( DGA_colormap ) { | |
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1027 XFreeColormap(DGA_Display, DGA_colormap); |
| 0 | 1028 DGA_colormap = 0; |
| 1029 } | |
| 1030 | |
| 1031 /* Unmap memory and reset video mode */ | |
|
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1032 SDL_NAME(XDGACloseFramebuffer)(DGA_Display, DGA_Screen); |
| 0 | 1033 if ( this->screen ) { |
| 1034 /* Tell SDL not to free the pixels */ | |
| 1035 this->screen->pixels = NULL; | |
| 1036 } | |
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1037 SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, 0); |
| 0 | 1038 |
| 1039 /* Clear the lock mutex */ | |
| 1040 if ( hw_lock != NULL ) { | |
| 1041 SDL_DestroyMutex(hw_lock); | |
| 1042 hw_lock = NULL; | |
| 1043 } | |
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1044 #ifdef LOCK_DGA_DISPLAY |
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1045 if ( event_lock != NULL ) { |
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1046 SDL_DestroyMutex(event_lock); |
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1047 event_lock = NULL; |
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1048 } |
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1049 #endif /* LOCK_DGA_DISPLAY */ |
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1050 |
| 0 | 1051 |
| 1052 /* Clean up defined video modes */ | |
| 1053 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
| 1054 if ( SDL_modelist[i] != NULL ) { | |
| 1055 for ( j=0; SDL_modelist[i][j]; ++j ) { | |
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1056 SDL_free(SDL_modelist[i][j]); |
| 0 | 1057 } |
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1058 SDL_free(SDL_modelist[i]); |
| 0 | 1059 SDL_modelist[i] = NULL; |
| 1060 } | |
| 1061 } | |
| 1062 | |
| 1063 /* Clean up the memory bucket list */ | |
| 1064 DGA_FreeHWSurfaces(this); | |
| 1065 | |
| 1066 /* Close up the display */ | |
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1067 XCloseDisplay(DGA_Display); |
| 0 | 1068 } |
| 1069 } |