Mercurial > sdl-ios-xcode
annotate src/video/dga/SDL_dgavideo.c @ 4210:8f501bbc3bf1 SDL-1.2
Fixed bug #571.. I think. :)
It certainly can't hurt!
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 21 Sep 2009 07:59:44 +0000 |
| parents | a1b03ba2fcd0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 SDL - Simple DirectMedia Layer |
| 4159 | 3 Copyright (C) 1997-2009 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 |
| 0 | 46 /* Initialization/Query functions */ |
| 47 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat); | |
| 48 static SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); | |
| 49 static SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); | |
| 50 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, | |
| 51 SDL_Color *colors); | |
| 52 static int DGA_SetGammaRamp(_THIS, Uint16 *ramp); | |
| 53 static void DGA_VideoQuit(_THIS); | |
| 54 | |
| 55 /* Hardware surface functions */ | |
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56 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size); |
| 0 | 57 static void DGA_FreeHWSurfaces(_THIS); |
| 58 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface); | |
| 59 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color); | |
| 60 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst); | |
| 61 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface); | |
| 62 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface); | |
| 63 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface); | |
| 64 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface); | |
| 65 | |
| 66 /* DGA driver bootstrap functions */ | |
| 67 | |
| 68 static int DGA_Available(void) | |
| 69 { | |
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70 const char *display = NULL; |
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71 Display *dpy = NULL; |
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72 int available = 0; |
| 0 | 73 |
| 74 /* The driver is available is available if the display is local | |
| 75 and the DGA 2.0+ extension is available, and we can map mem. | |
| 76 */ | |
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77 if ( SDL_X11_LoadSymbols() ) { |
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78 if ( (SDL_strncmp(XDisplayName(display), ":", 1) == 0) || |
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79 (SDL_strncmp(XDisplayName(display), "unix:", 5) == 0) ) { |
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80 dpy = XOpenDisplay(display); |
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81 if ( dpy ) { |
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82 int events, errors, major, minor; |
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83 |
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84 if ( SDL_NAME(XDGAQueryExtension)(dpy, &events, &errors) && |
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85 SDL_NAME(XDGAQueryVersion)(dpy, &major, &minor) ) { |
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86 int screen; |
| 0 | 87 |
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88 screen = DefaultScreen(dpy); |
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89 if ( (major >= 2) && |
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90 SDL_NAME(XDGAOpenFramebuffer)(dpy, screen) ) { |
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91 available = 1; |
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92 SDL_NAME(XDGACloseFramebuffer)(dpy, screen); |
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93 } |
| 0 | 94 } |
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95 XCloseDisplay(dpy); |
| 0 | 96 } |
| 97 } | |
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98 SDL_X11_UnloadSymbols(); |
| 0 | 99 } |
| 100 return(available); | |
| 101 } | |
| 102 | |
| 103 static void DGA_DeleteDevice(SDL_VideoDevice *device) | |
| 104 { | |
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105 if (device != NULL) { |
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106 SDL_free(device->hidden); |
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107 SDL_free(device); |
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108 SDL_X11_UnloadSymbols(); |
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109 } |
| 0 | 110 } |
| 111 | |
| 112 static SDL_VideoDevice *DGA_CreateDevice(int devindex) | |
| 113 { | |
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114 SDL_VideoDevice *device = NULL; |
| 0 | 115 |
| 116 /* Initialize all variables that we clean on shutdown */ | |
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117 if (SDL_X11_LoadSymbols()) { |
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118 device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
| 0 | 119 if ( device ) { |
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120 SDL_memset(device, 0, (sizeof *device)); |
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121 device->hidden = (struct SDL_PrivateVideoData *) |
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122 SDL_malloc((sizeof *device->hidden)); |
| 0 | 123 } |
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124 if ( (device == NULL) || (device->hidden == NULL) ) { |
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125 SDL_OutOfMemory(); |
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126 if ( device ) { |
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127 SDL_free(device); |
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128 } |
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129 SDL_X11_UnloadSymbols(); |
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130 return(0); |
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131 } |
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132 SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
| 0 | 133 |
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134 /* Set the function pointers */ |
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135 device->VideoInit = DGA_VideoInit; |
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136 device->ListModes = DGA_ListModes; |
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137 device->SetVideoMode = DGA_SetVideoMode; |
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138 device->SetColors = DGA_SetColors; |
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139 device->UpdateRects = NULL; |
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140 device->VideoQuit = DGA_VideoQuit; |
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141 device->AllocHWSurface = DGA_AllocHWSurface; |
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142 device->CheckHWBlit = DGA_CheckHWBlit; |
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143 device->FillHWRect = DGA_FillHWRect; |
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144 device->SetHWColorKey = NULL; |
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145 device->SetHWAlpha = NULL; |
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146 device->LockHWSurface = DGA_LockHWSurface; |
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147 device->UnlockHWSurface = DGA_UnlockHWSurface; |
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148 device->FlipHWSurface = DGA_FlipHWSurface; |
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149 device->FreeHWSurface = DGA_FreeHWSurface; |
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150 device->SetGammaRamp = DGA_SetGammaRamp; |
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151 device->GetGammaRamp = NULL; |
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152 device->SetCaption = NULL; |
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153 device->SetIcon = NULL; |
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154 device->IconifyWindow = NULL; |
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155 device->GrabInput = NULL; |
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156 device->GetWMInfo = NULL; |
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157 device->InitOSKeymap = DGA_InitOSKeymap; |
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158 device->PumpEvents = DGA_PumpEvents; |
| 0 | 159 |
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160 device->free = DGA_DeleteDevice; |
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161 } |
| 0 | 162 |
| 163 return device; | |
| 164 } | |
| 165 | |
| 166 VideoBootStrap DGA_bootstrap = { | |
| 167 "dga", "XFree86 DGA 2.0", | |
| 168 DGA_Available, DGA_CreateDevice | |
| 169 }; | |
| 170 | |
| 171 static int DGA_AddMode(_THIS, int bpp, int w, int h) | |
| 172 { | |
| 173 SDL_Rect *mode; | |
| 1800 | 174 int index; |
| 0 | 175 int next_mode; |
| 176 | |
| 177 /* Check to see if we already have this mode */ | |
| 178 if ( bpp < 8 ) { /* Not supported */ | |
| 179 return(0); | |
| 180 } | |
| 181 index = ((bpp+7)/8)-1; | |
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182 if ( SDL_nummodes[index] > 0 ) { |
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183 mode = SDL_modelist[index][SDL_nummodes[index]-1]; |
| 0 | 184 if ( (mode->w == w) && (mode->h == h) ) { |
| 185 return(0); | |
| 186 } | |
| 187 } | |
| 188 | |
| 189 /* Set up the new video mode rectangle */ | |
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190 mode = (SDL_Rect *)SDL_malloc(sizeof *mode); |
| 0 | 191 if ( mode == NULL ) { |
| 192 SDL_OutOfMemory(); | |
| 193 return(-1); | |
| 194 } | |
| 195 mode->x = 0; | |
| 196 mode->y = 0; | |
| 197 mode->w = w; | |
| 198 mode->h = h; | |
| 199 | |
| 200 /* Allocate the new list of modes, and fill in the new mode */ | |
| 201 next_mode = SDL_nummodes[index]; | |
| 202 SDL_modelist[index] = (SDL_Rect **) | |
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203 SDL_realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *)); |
| 0 | 204 if ( SDL_modelist[index] == NULL ) { |
| 205 SDL_OutOfMemory(); | |
| 206 SDL_nummodes[index] = 0; | |
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207 SDL_free(mode); |
| 0 | 208 return(-1); |
| 209 } | |
| 210 SDL_modelist[index][next_mode] = mode; | |
| 211 SDL_modelist[index][next_mode+1] = NULL; | |
| 212 SDL_nummodes[index]++; | |
| 213 | |
| 214 return(0); | |
| 215 } | |
| 216 | |
| 217 /* This whole function is a hack. :) */ | |
| 218 static Uint32 get_video_size(_THIS) | |
| 219 { | |
| 220 /* This is a non-exported function from libXxf86dga.a */ | |
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221 extern unsigned char *SDL_NAME(XDGAGetMappedMemory)(int screen); |
| 0 | 222 FILE *proc; |
| 223 unsigned long mem; | |
| 224 unsigned start, stop; | |
| 225 char line[BUFSIZ]; | |
| 226 Uint32 size; | |
| 227 | |
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228 mem = (unsigned long)SDL_NAME(XDGAGetMappedMemory)(DGA_Screen); |
| 0 | 229 size = 0; |
| 230 proc = fopen("/proc/self/maps", "r"); | |
| 231 if ( proc ) { | |
| 232 while ( fgets(line, sizeof(line)-1, proc) ) { | |
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233 SDL_sscanf(line, "%x-%x", &start, &stop); |
| 0 | 234 if ( start == mem ) { |
| 235 size = (Uint32)((stop-start)/1024); | |
| 236 break; | |
| 237 } | |
| 238 } | |
| 239 fclose(proc); | |
| 240 } | |
| 241 return(size); | |
| 242 } | |
| 243 | |
| 244 #ifdef DGA_DEBUG | |
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245 static void PrintMode(SDL_NAME(XDGAMode) *mode) |
| 0 | 246 { |
| 247 printf("Mode: %s (%dx%d) at %d bpp (%f refresh, %d pitch) num: %d\n", | |
| 248 mode->name, | |
| 249 mode->viewportWidth, mode->viewportHeight, | |
| 250 mode->depth == 24 ? mode->bitsPerPixel : mode->depth, | |
| 251 mode->verticalRefresh, mode->bytesPerScanline, mode->num); | |
| 252 printf("\tRGB: 0x%8.8x 0x%8.8x 0x%8.8x (%d - %s)\n", | |
| 253 mode->redMask, mode->greenMask, mode->blueMask, | |
| 254 mode->visualClass, | |
| 255 mode->visualClass == TrueColor ? "truecolor" : | |
| 256 mode->visualClass == DirectColor ? "directcolor" : | |
| 257 mode->visualClass == PseudoColor ? "pseudocolor" : "unknown"); | |
| 258 printf("\tFlags: "); | |
| 259 if ( mode->flags & XDGAConcurrentAccess ) | |
| 260 printf(" XDGAConcurrentAccess"); | |
| 261 if ( mode->flags & XDGASolidFillRect ) | |
| 262 printf(" XDGASolidFillRect"); | |
| 263 if ( mode->flags & XDGABlitRect ) | |
| 264 printf(" XDGABlitRect"); | |
| 265 if ( mode->flags & XDGABlitTransRect ) | |
| 266 printf(" XDGABlitTransRect"); | |
| 267 if ( mode->flags & XDGAPixmap ) | |
| 268 printf(" XDGAPixmap"); | |
| 269 if ( mode->flags & XDGAInterlaced ) | |
| 270 printf(" XDGAInterlaced"); | |
| 271 if ( mode->flags & XDGADoublescan ) | |
| 272 printf(" XDGADoublescan"); | |
| 273 if ( mode->viewportFlags & XDGAFlipRetrace ) | |
| 274 printf(" XDGAFlipRetrace"); | |
| 275 if ( mode->viewportFlags & XDGAFlipImmediate ) | |
| 276 printf(" XDGAFlipImmediate"); | |
| 277 printf("\n"); | |
| 278 } | |
| 279 #endif /* DGA_DEBUG */ | |
| 280 | |
| 281 static int cmpmodes(const void *va, const void *vb) | |
| 282 { | |
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283 const SDL_NAME(XDGAMode) *a = (const SDL_NAME(XDGAMode) *)va; |
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284 const SDL_NAME(XDGAMode) *b = (const SDL_NAME(XDGAMode) *)vb; |
| 0 | 285 |
| 286 if ( (a->viewportWidth == b->viewportWidth) && | |
| 287 (b->viewportHeight == a->viewportHeight) ) { | |
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288 /* Prefer 32 bpp over 24 bpp, 16 bpp over 15 bpp */ |
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289 int a_bpp = a->depth == 24 ? a->bitsPerPixel : a->depth; |
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290 int b_bpp = b->depth == 24 ? b->bitsPerPixel : b->depth; |
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291 if ( a_bpp != b_bpp ) { |
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292 return b_bpp - a_bpp; |
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293 } |
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294 /* Prefer DirectColor visuals, for gamma support */ |
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295 if ( a->visualClass == DirectColor && b->visualClass != DirectColor ) |
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296 return -1; |
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297 if ( b->visualClass == DirectColor && a->visualClass != DirectColor ) |
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298 return 1; |
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299 /* Maintain server refresh rate sorting */ |
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300 return a->num - b->num; |
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301 } else if ( a->viewportWidth == b->viewportWidth ) { |
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302 return b->viewportHeight - a->viewportHeight; |
| 0 | 303 } else { |
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304 return b->viewportWidth - a->viewportWidth; |
| 0 | 305 } |
| 306 } | |
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307 static void UpdateHWInfo(_THIS, SDL_NAME(XDGAMode) *mode) |
| 0 | 308 { |
| 309 this->info.wm_available = 0; | |
| 310 this->info.hw_available = 1; | |
| 311 if ( mode->flags & XDGABlitRect ) { | |
| 312 this->info.blit_hw = 1; | |
| 313 } else { | |
| 314 this->info.blit_hw = 0; | |
| 315 } | |
| 316 if ( mode->flags & XDGABlitTransRect ) { | |
| 317 this->info.blit_hw_CC = 1; | |
| 318 } else { | |
| 319 this->info.blit_hw_CC = 0; | |
| 320 } | |
| 321 if ( mode->flags & XDGASolidFillRect ) { | |
| 322 this->info.blit_fill = 1; | |
| 323 } else { | |
| 324 this->info.blit_fill = 0; | |
| 325 } | |
| 326 this->info.video_mem = get_video_size(this); | |
| 327 } | |
| 328 | |
| 329 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat) | |
| 330 { | |
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331 const char *env; |
| 0 | 332 const char *display; |
| 333 int event_base, error_base; | |
| 334 int major_version, minor_version; | |
| 335 Visual *visual; | |
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336 SDL_NAME(XDGAMode) *modes; |
| 0 | 337 int i, num_modes; |
| 338 | |
| 339 /* Open the X11 display */ | |
| 340 display = NULL; /* Get it from DISPLAY environment variable */ | |
| 341 | |
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342 DGA_Display = XOpenDisplay(display); |
| 0 | 343 if ( DGA_Display == NULL ) { |
| 344 SDL_SetError("Couldn't open X11 display"); | |
| 345 return(-1); | |
| 346 } | |
| 347 | |
| 348 /* Check for the DGA extension */ | |
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349 if ( ! SDL_NAME(XDGAQueryExtension)(DGA_Display, &event_base, &error_base) || |
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350 ! SDL_NAME(XDGAQueryVersion)(DGA_Display, &major_version, &minor_version) ) { |
| 0 | 351 SDL_SetError("DGA extension not available"); |
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352 XCloseDisplay(DGA_Display); |
| 0 | 353 return(-1); |
| 354 } | |
| 355 if ( major_version < 2 ) { | |
| 356 SDL_SetError("DGA driver requires DGA 2.0 or newer"); | |
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357 XCloseDisplay(DGA_Display); |
| 0 | 358 return(-1); |
| 359 } | |
| 360 DGA_event_base = event_base; | |
| 361 | |
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362 /* Determine the current screen size */ |
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363 this->info.current_w = DisplayWidth(DGA_Display, DGA_Screen); |
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364 this->info.current_h = DisplayHeight(DGA_Display, DGA_Screen); |
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365 |
| 0 | 366 /* Determine the current screen depth */ |
| 367 visual = DefaultVisual(DGA_Display, DGA_Screen); | |
| 368 { | |
| 369 XPixmapFormatValues *pix_format; | |
| 370 int i, num_formats; | |
| 371 | |
| 372 vformat->BitsPerPixel = DefaultDepth(DGA_Display, DGA_Screen); | |
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373 pix_format = XListPixmapFormats(DGA_Display, &num_formats); |
| 0 | 374 if ( pix_format == NULL ) { |
| 375 SDL_SetError("Couldn't determine screen formats"); | |
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376 XCloseDisplay(DGA_Display); |
| 0 | 377 return(-1); |
| 378 } | |
| 379 for ( i=0; i<num_formats; ++i ) { | |
| 380 if ( vformat->BitsPerPixel == pix_format[i].depth ) | |
| 381 break; | |
| 382 } | |
| 383 if ( i != num_formats ) | |
| 384 vformat->BitsPerPixel = pix_format[i].bits_per_pixel; | |
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385 XFree((char *)pix_format); |
| 0 | 386 } |
| 387 if ( vformat->BitsPerPixel > 8 ) { | |
| 388 vformat->Rmask = visual->red_mask; | |
| 389 vformat->Gmask = visual->green_mask; | |
| 390 vformat->Bmask = visual->blue_mask; | |
| 391 } | |
| 392 | |
| 393 /* Open access to the framebuffer */ | |
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394 if ( ! SDL_NAME(XDGAOpenFramebuffer)(DGA_Display, DGA_Screen) ) { |
| 0 | 395 SDL_SetError("Unable to map the video memory"); |
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396 XCloseDisplay(DGA_Display); |
| 0 | 397 return(-1); |
| 398 } | |
| 399 | |
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400 /* Allow environment override of screensaver disable. */ |
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401 env = SDL_getenv("SDL_VIDEO_ALLOW_SCREENSAVER"); |
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402 if ( env ) { |
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403 allow_screensaver = SDL_atoi(env); |
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404 } else { |
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405 #ifdef SDL_VIDEO_DISABLE_SCREENSAVER |
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406 allow_screensaver = 0; |
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407 #else |
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408 allow_screensaver = 1; |
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409 #endif |
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410 } |
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411 |
| 0 | 412 /* Query for the list of available video modes */ |
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413 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
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414 SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes); |
| 0 | 415 for ( i=0; i<num_modes; ++i ) { |
|
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416 if ( ((modes[i].visualClass == PseudoColor) || |
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417 (modes[i].visualClass == DirectColor) || |
|
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418 (modes[i].visualClass == TrueColor)) && |
|
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419 !(modes[i].flags & (XDGAInterlaced|XDGADoublescan)) ) { |
| 0 | 420 #ifdef DGA_DEBUG |
|
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421 PrintMode(&modes[i]); |
| 0 | 422 #endif |
| 423 DGA_AddMode(this, modes[i].bitsPerPixel, | |
| 424 modes[i].viewportWidth, | |
| 425 modes[i].viewportHeight); | |
| 426 } | |
| 427 } | |
| 428 UpdateHWInfo(this, modes); | |
|
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parents:
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429 XFree(modes); |
| 0 | 430 |
| 431 /* Create the hardware surface lock mutex */ | |
| 432 hw_lock = SDL_CreateMutex(); | |
| 433 if ( hw_lock == NULL ) { | |
| 434 SDL_SetError("Unable to create lock mutex"); | |
| 435 DGA_VideoQuit(this); | |
| 436 return(-1); | |
| 437 } | |
| 438 | |
|
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439 #ifdef LOCK_DGA_DISPLAY |
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440 /* Create the event lock so we're thread-safe.. :-/ */ |
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441 event_lock = SDL_CreateMutex(); |
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442 #endif /* LOCK_DGA_DISPLAY */ |
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443 |
| 0 | 444 /* We're done! */ |
| 445 return(0); | |
| 446 } | |
| 447 | |
| 448 SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) | |
| 449 { | |
| 450 return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); | |
| 451 } | |
| 452 | |
| 453 /* Various screen update functions available */ | |
| 454 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); | |
| 455 | |
| 456 SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, | |
| 457 int width, int height, int bpp, Uint32 flags) | |
| 458 { | |
|
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Added SDL_LockRect() and SDL_UnlockRect()
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459 SDL_NAME(XDGAMode) *modes; |
| 0 | 460 int i, num_modes; |
|
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461 SDL_NAME(XDGADevice) *mode; |
| 0 | 462 int screen_len; |
| 463 Uint8 *surfaces_mem; | |
| 464 int surfaces_len; | |
| 465 | |
| 466 /* Free any previous colormap */ | |
| 467 if ( DGA_colormap ) { | |
|
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Updated dynamic X11 code. See details in Bugzilla #170.
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468 XFreeColormap(DGA_Display, DGA_colormap); |
| 0 | 469 DGA_colormap = 0; |
| 470 } | |
| 471 | |
| 472 /* Search for a matching video mode */ | |
|
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473 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
|
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474 SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes); |
| 0 | 475 for ( i=0; i<num_modes; ++i ) { |
| 476 int depth; | |
| 477 | |
| 478 depth = modes[i].depth; | |
| 479 if ( depth == 24 ) { /* Distinguish between 24 and 32 bpp */ | |
| 480 depth = modes[i].bitsPerPixel; | |
| 481 } | |
| 482 if ( (depth == bpp) && | |
| 483 (modes[i].viewportWidth == width) && | |
| 484 (modes[i].viewportHeight == height) && | |
| 485 ((modes[i].visualClass == PseudoColor) || | |
| 486 (modes[i].visualClass == DirectColor) || | |
|
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487 (modes[i].visualClass == TrueColor)) && |
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488 !(modes[i].flags & (XDGAInterlaced|XDGADoublescan)) ) { |
| 0 | 489 break; |
| 490 } | |
| 491 } | |
| 492 if ( i == num_modes ) { | |
| 493 SDL_SetError("No matching video mode found"); | |
| 494 return(NULL); | |
| 495 } | |
|
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496 #ifdef DGA_DEBUG |
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497 PrintMode(&modes[i]); |
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498 #endif |
| 0 | 499 |
| 500 /* Set the video mode */ | |
|
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501 mode = SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, modes[i].num); |
|
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parents:
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502 XFree(modes); |
| 0 | 503 if ( mode == NULL ) { |
| 504 SDL_SetError("Unable to switch to requested mode"); | |
| 505 return(NULL); | |
| 506 } | |
|
559
b528214c8c9a
Fixed invalid memory access in DGA video driver (thanks ldb!)
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|
507 DGA_visualClass = mode->mode.visualClass; |
| 0 | 508 memory_base = (Uint8 *)mode->data; |
| 509 memory_pitch = mode->mode.bytesPerScanline; | |
| 510 | |
| 511 /* Set up the new mode framebuffer */ | |
| 512 current->flags = (SDL_FULLSCREEN|SDL_HWSURFACE); | |
| 513 current->w = mode->mode.viewportWidth; | |
| 514 current->h = mode->mode.viewportHeight; | |
| 515 current->pitch = memory_pitch; | |
| 516 current->pixels = memory_base; | |
| 517 if ( ! SDL_ReallocFormat(current, mode->mode.bitsPerPixel, | |
| 518 mode->mode.redMask, | |
| 519 mode->mode.greenMask, | |
| 520 mode->mode.blueMask, 0) ) { | |
| 521 return(NULL); | |
| 522 } | |
| 523 screen_len = current->h*current->pitch; | |
| 524 | |
| 525 /* Create a colormap if necessary */ | |
| 526 if ( (DGA_visualClass == PseudoColor) || | |
| 527 (DGA_visualClass == DirectColor) ) { | |
|
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Added SDL_LockRect() and SDL_UnlockRect()
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528 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
| 0 | 529 mode, AllocAll); |
| 530 if ( DGA_visualClass == PseudoColor ) { | |
| 531 current->flags |= SDL_HWPALETTE; | |
| 532 } else { | |
| 533 /* Initialize the colormap to the identity mapping */ | |
| 534 SDL_GetGammaRamp(0, 0, 0); | |
| 535 this->screen = current; | |
| 536 DGA_SetGammaRamp(this, this->gamma); | |
| 537 this->screen = NULL; | |
| 538 } | |
| 539 } else { | |
|
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540 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
| 0 | 541 mode, AllocNone); |
| 542 } | |
|
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Added SDL_LockRect() and SDL_UnlockRect()
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543 SDL_NAME(XDGAInstallColormap)(DGA_Display, DGA_Screen, DGA_colormap); |
| 0 | 544 |
| 545 /* Update the hardware capabilities */ | |
| 546 UpdateHWInfo(this, &mode->mode); | |
| 547 | |
| 548 /* Set up the information for hardware surfaces */ | |
| 549 surfaces_mem = (Uint8 *)current->pixels + screen_len; | |
| 550 surfaces_len = (mode->mode.imageHeight*current->pitch - screen_len); | |
| 551 | |
| 552 /* Update for double-buffering, if we can */ | |
|
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Added SDL_LockRect() and SDL_UnlockRect()
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553 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, 0, 0, XDGAFlipRetrace); |
| 0 | 554 if ( flags & SDL_DOUBLEBUF ) { |
| 555 if ( mode->mode.imageHeight >= (current->h*2) ) { | |
| 556 current->flags |= SDL_DOUBLEBUF; | |
| 557 flip_page = 0; | |
| 558 flip_yoffset[0] = 0; | |
| 559 flip_yoffset[1] = current->h; | |
| 560 flip_address[0] = memory_base; | |
| 561 flip_address[1] = memory_base+screen_len; | |
| 562 surfaces_mem += screen_len; | |
| 563 surfaces_len -= screen_len; | |
| 564 } | |
| 565 } | |
| 566 | |
| 567 /* Allocate memory tracking for hardware surfaces */ | |
| 568 DGA_FreeHWSurfaces(this); | |
| 569 if ( surfaces_len < 0 ) { | |
| 570 surfaces_len = 0; | |
| 571 } | |
|
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572 DGA_InitHWSurfaces(this, current, surfaces_mem, surfaces_len); |
| 0 | 573 |
|
202
401f0134f4f9
Fixed crash when using double-buffering with DGA
Sam Lantinga <slouken@libsdl.org>
parents:
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|
574 /* Expose the back buffer as surface memory */ |
|
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Fixed crash when using double-buffering with DGA
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575 if ( current->flags & SDL_DOUBLEBUF ) { |
|
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Fixed crash when using double-buffering with DGA
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576 this->screen = current; |
|
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Fixed crash when using double-buffering with DGA
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577 DGA_FlipHWSurface(this, current); |
|
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578 this->screen = NULL; |
|
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Fixed crash when using double-buffering with DGA
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|
579 } |
|
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Fixed crash when using double-buffering with DGA
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580 |
| 0 | 581 /* Set the update rectangle function */ |
| 582 this->UpdateRects = DGA_DirectUpdate; | |
| 583 | |
| 584 /* Enable mouse and keyboard support */ | |
| 585 { long input_mask; | |
| 586 input_mask = (KeyPressMask | KeyReleaseMask); | |
| 587 input_mask |= (ButtonPressMask | ButtonReleaseMask); | |
| 588 input_mask |= PointerMotionMask; | |
|
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Added SDL_LockRect() and SDL_UnlockRect()
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589 SDL_NAME(XDGASelectInput)(DGA_Display, DGA_Screen, input_mask); |
| 0 | 590 } |
| 591 | |
| 592 /* We're done */ | |
| 593 return(current); | |
| 594 } | |
| 595 | |
| 596 #ifdef DGA_DEBUG | |
| 597 static void DGA_DumpHWSurfaces(_THIS) | |
| 598 { | |
| 599 vidmem_bucket *bucket; | |
| 600 | |
| 601 printf("Memory left: %d (%d total)\n", surfaces_memleft, surfaces_memtotal); | |
| 602 printf("\n"); | |
| 603 printf(" Base Size\n"); | |
| 604 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { | |
| 605 printf("Bucket: %p, %d (%s)\n", bucket->base, bucket->size, bucket->used ? "used" : "free"); | |
| 606 if ( bucket->prev ) { | |
| 607 if ( bucket->base != bucket->prev->base+bucket->prev->size ) { | |
| 608 printf("Warning, corrupt bucket list! (prev)\n"); | |
| 609 } | |
| 610 } else { | |
| 611 if ( bucket != &surfaces ) { | |
| 612 printf("Warning, corrupt bucket list! (!prev)\n"); | |
| 613 } | |
| 614 } | |
| 615 if ( bucket->next ) { | |
| 616 if ( bucket->next->base != bucket->base+bucket->size ) { | |
| 617 printf("Warning, corrupt bucket list! (next)\n"); | |
| 618 } | |
| 619 } | |
| 620 } | |
| 621 printf("\n"); | |
| 622 } | |
| 623 #endif | |
| 624 | |
|
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625 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size) |
| 0 | 626 { |
|
101
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|
627 vidmem_bucket *bucket; |
|
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|
628 |
| 0 | 629 surfaces_memtotal = size; |
| 630 surfaces_memleft = size; | |
|
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631 |
|
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|
632 if ( surfaces_memleft > 0 ) { |
|
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3692456e7b0f
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633 bucket = (vidmem_bucket *)SDL_malloc(sizeof(*bucket)); |
|
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634 if ( bucket == NULL ) { |
|
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|
635 SDL_OutOfMemory(); |
|
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636 return(-1); |
|
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|
637 } |
|
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|
638 bucket->prev = &surfaces; |
|
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639 bucket->used = 0; |
|
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640 bucket->dirty = 0; |
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641 bucket->base = base; |
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642 bucket->size = size; |
|
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643 bucket->next = NULL; |
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644 } else { |
|
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645 bucket = NULL; |
|
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646 } |
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647 |
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648 surfaces.prev = NULL; |
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649 surfaces.used = 1; |
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650 surfaces.dirty = 0; |
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651 surfaces.base = screen->pixels; |
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652 surfaces.size = (unsigned int)((long)base - (long)surfaces.base); |
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653 surfaces.next = bucket; |
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654 screen->hwdata = (struct private_hwdata *)&surfaces; |
| 0 | 655 return(0); |
| 656 } | |
| 657 static void DGA_FreeHWSurfaces(_THIS) | |
| 658 { | |
| 659 vidmem_bucket *bucket, *freeable; | |
| 660 | |
| 661 bucket = surfaces.next; | |
| 662 while ( bucket ) { | |
| 663 freeable = bucket; | |
| 664 bucket = bucket->next; | |
|
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665 SDL_free(freeable); |
| 0 | 666 } |
| 667 surfaces.next = NULL; | |
| 668 } | |
| 669 | |
|
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Some minor name changes to clean up
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670 static __inline__ void DGA_AddBusySurface(SDL_Surface *surface) |
|
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671 { |
|
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672 ((vidmem_bucket *)surface->hwdata)->dirty = 1; |
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673 } |
|
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674 |
|
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675 static __inline__ int DGA_IsSurfaceBusy(SDL_Surface *surface) |
|
101
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676 { |
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677 return ((vidmem_bucket *)surface->hwdata)->dirty; |
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678 } |
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679 |
|
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680 static __inline__ void DGA_WaitBusySurfaces(_THIS) |
|
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681 { |
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682 vidmem_bucket *bucket; |
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683 |
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684 /* Wait for graphic operations to complete */ |
|
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685 SDL_NAME(XDGASync)(DGA_Display, DGA_Screen); |
|
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686 |
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687 /* Clear all surface dirty bits */ |
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688 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
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689 bucket->dirty = 0; |
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690 } |
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691 } |
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|
692 |
| 0 | 693 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface) |
| 694 { | |
| 695 vidmem_bucket *bucket; | |
| 696 int size; | |
| 697 int extra; | |
|
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698 int retval = 0; |
| 0 | 699 |
| 700 /* Temporarily, we only allow surfaces the same width as display. | |
| 701 Some blitters require the pitch between two hardware surfaces | |
| 702 to be the same. Others have interesting alignment restrictions. | |
| 703 */ | |
| 704 if ( surface->pitch > SDL_VideoSurface->pitch ) { | |
| 705 SDL_SetError("Surface requested wider than screen"); | |
| 706 return(-1); | |
| 707 } | |
| 708 surface->pitch = SDL_VideoSurface->pitch; | |
| 709 size = surface->h * surface->pitch; | |
| 710 #ifdef DGA_DEBUG | |
| 711 fprintf(stderr, "Allocating bucket of %d bytes\n", size); | |
| 712 #endif | |
|
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713 LOCK_DISPLAY(); |
| 0 | 714 |
| 715 /* Quick check for available mem */ | |
| 716 if ( size > surfaces_memleft ) { | |
| 717 SDL_SetError("Not enough video memory"); | |
|
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718 retval = -1; |
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719 goto done; |
| 0 | 720 } |
| 721 | |
| 722 /* Search for an empty bucket big enough */ | |
| 723 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { | |
| 724 if ( ! bucket->used && (size <= bucket->size) ) { | |
| 725 break; | |
| 726 } | |
| 727 } | |
| 728 if ( bucket == NULL ) { | |
| 729 SDL_SetError("Video memory too fragmented"); | |
|
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730 retval = -1; |
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731 goto done; |
| 0 | 732 } |
| 733 | |
| 734 /* Create a new bucket for left-over memory */ | |
| 735 extra = (bucket->size - size); | |
| 736 if ( extra ) { | |
| 737 vidmem_bucket *newbucket; | |
| 738 | |
| 739 #ifdef DGA_DEBUG | |
| 740 fprintf(stderr, "Adding new free bucket of %d bytes\n", extra); | |
| 741 #endif | |
|
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742 newbucket = (vidmem_bucket *)SDL_malloc(sizeof(*newbucket)); |
| 0 | 743 if ( newbucket == NULL ) { |
| 744 SDL_OutOfMemory(); | |
|
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745 retval = -1; |
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746 goto done; |
| 0 | 747 } |
| 748 newbucket->prev = bucket; | |
| 749 newbucket->used = 0; | |
| 750 newbucket->base = bucket->base+size; | |
| 751 newbucket->size = extra; | |
| 752 newbucket->next = bucket->next; | |
| 753 if ( bucket->next ) { | |
| 754 bucket->next->prev = newbucket; | |
| 755 } | |
| 756 bucket->next = newbucket; | |
| 757 } | |
| 758 | |
| 759 /* Set the current bucket values and return it! */ | |
| 760 bucket->used = 1; | |
| 761 bucket->size = size; | |
|
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762 bucket->dirty = 0; |
| 0 | 763 #ifdef DGA_DEBUG |
| 764 fprintf(stderr, "Allocated %d bytes at %p\n", bucket->size, bucket->base); | |
| 765 #endif | |
| 766 surfaces_memleft -= size; | |
| 767 surface->flags |= SDL_HWSURFACE; | |
| 768 surface->pixels = bucket->base; | |
|
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769 surface->hwdata = (struct private_hwdata *)bucket; |
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770 done: |
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771 UNLOCK_DISPLAY(); |
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772 return(retval); |
| 0 | 773 } |
| 774 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface) | |
| 775 { | |
| 776 vidmem_bucket *bucket, *freeable; | |
| 777 | |
| 1786 | 778 /* Wait for any pending operations involving this surface */ |
| 779 if ( DGA_IsSurfaceBusy(surface) ) { | |
| 780 LOCK_DISPLAY(); | |
| 781 DGA_WaitBusySurfaces(this); | |
| 782 UNLOCK_DISPLAY(); | |
| 783 } | |
| 784 | |
| 0 | 785 /* Look for the bucket in the current list */ |
|
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786 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
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787 if ( bucket == (vidmem_bucket *)surface->hwdata ) { |
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788 break; |
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789 } |
| 0 | 790 } |
|
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791 if ( bucket && bucket->used ) { |
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792 /* Add the memory back to the total */ |
| 0 | 793 #ifdef DGA_DEBUG |
| 794 printf("Freeing bucket of %d bytes\n", bucket->size); | |
| 795 #endif | |
|
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796 surfaces_memleft += bucket->size; |
| 0 | 797 |
|
102
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798 /* Can we merge the space with surrounding buckets? */ |
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799 bucket->used = 0; |
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800 if ( bucket->next && ! bucket->next->used ) { |
| 0 | 801 #ifdef DGA_DEBUG |
| 802 printf("Merging with next bucket, for %d total bytes\n", bucket->size+bucket->next->size); | |
| 803 #endif | |
|
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804 freeable = bucket->next; |
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805 bucket->size += bucket->next->size; |
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806 bucket->next = bucket->next->next; |
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807 if ( bucket->next ) { |
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808 bucket->next->prev = bucket; |
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809 } |
|
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810 SDL_free(freeable); |
| 0 | 811 } |
|
102
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812 if ( bucket->prev && ! bucket->prev->used ) { |
| 0 | 813 #ifdef DGA_DEBUG |
| 814 printf("Merging with previous bucket, for %d total bytes\n", bucket->prev->size+bucket->size); | |
| 815 #endif | |
|
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816 freeable = bucket; |
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817 bucket->prev->size += bucket->size; |
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818 bucket->prev->next = bucket->next; |
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819 if ( bucket->next ) { |
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820 bucket->next->prev = bucket->prev; |
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821 } |
|
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822 SDL_free(freeable); |
| 0 | 823 } |
| 824 } | |
| 825 surface->pixels = NULL; | |
|
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826 surface->hwdata = NULL; |
| 0 | 827 } |
| 828 | |
|
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829 static __inline__ void DGA_dst_to_xy(_THIS, SDL_Surface *dst, int *x, int *y) |
| 0 | 830 { |
| 831 *x = (long)((Uint8 *)dst->pixels - memory_base)%memory_pitch; | |
| 832 *y = (long)((Uint8 *)dst->pixels - memory_base)/memory_pitch; | |
| 833 } | |
| 834 | |
| 835 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) | |
| 836 { | |
| 837 int x, y; | |
| 838 unsigned int w, h; | |
| 839 | |
| 840 /* Don't fill 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, dst, &x, &y); |
| 0 | 848 x += rect->x; |
| 849 y += rect->y; | |
| 850 w = rect->w; | |
| 851 h = rect->h; | |
| 852 #if 0 | |
| 853 printf("Hardware accelerated rectangle fill: %dx%d at %d,%d\n", w, h, x, y); | |
| 854 #endif | |
|
292
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855 SDL_NAME(XDGAFillRectangle)(DGA_Display, DGA_Screen, x, y, w, h, color); |
|
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|
856 if ( !(this->screen->flags & SDL_DOUBLEBUF) ) { |
|
1575
3ba88cb7eb1b
Updated dynamic X11 code. See details in Bugzilla #170.
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|
857 XFlush(DGA_Display); |
|
540
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858 } |
|
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859 DGA_AddBusySurface(dst); |
|
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|
860 UNLOCK_DISPLAY(); |
| 0 | 861 return(0); |
| 862 } | |
| 863 | |
| 864 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, | |
| 865 SDL_Surface *dst, SDL_Rect *dstrect) | |
| 866 { | |
| 867 SDL_VideoDevice *this; | |
| 868 int srcx, srcy; | |
| 869 int dstx, dsty; | |
| 870 unsigned int w, h; | |
| 871 | |
| 872 this = current_video; | |
| 873 /* Don't blit to the visible part of the screen, wait until flipped */ | |
|
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874 LOCK_DISPLAY(); |
| 0 | 875 if ( was_flipped && (dst == this->screen) ) { |
|
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876 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 877 /* Keep waiting for the hardware ... */ ; |
| 878 was_flipped = 0; | |
| 879 } | |
|
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880 DGA_dst_to_xy(this, src, &srcx, &srcy); |
| 0 | 881 srcx += srcrect->x; |
| 882 srcy += srcrect->y; | |
|
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883 DGA_dst_to_xy(this, dst, &dstx, &dsty); |
| 0 | 884 dstx += dstrect->x; |
| 885 dsty += dstrect->y; | |
| 886 w = srcrect->w; | |
| 887 h = srcrect->h; | |
| 888 #if 0 | |
| 889 printf("Blitting %dx%d from %d,%d to %d,%d\n", w, h, srcx, srcy, dstx, dsty); | |
| 890 #endif | |
| 891 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
|
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892 SDL_NAME(XDGACopyTransparentArea)(DGA_Display, DGA_Screen, |
| 0 | 893 srcx, srcy, w, h, dstx, dsty, src->format->colorkey); |
| 894 } else { | |
|
292
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895 SDL_NAME(XDGACopyArea)(DGA_Display, DGA_Screen, |
| 0 | 896 srcx, srcy, w, h, dstx, dsty); |
| 897 } | |
|
540
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|
898 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
|
899 XFlush(DGA_Display); |
|
540
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|
900 } |
|
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901 DGA_AddBusySurface(src); |
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902 DGA_AddBusySurface(dst); |
|
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|
903 UNLOCK_DISPLAY(); |
| 0 | 904 return(0); |
| 905 } | |
| 906 | |
| 907 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) | |
| 908 { | |
| 909 int accelerated; | |
| 910 | |
| 911 /* Set initial acceleration on */ | |
| 912 src->flags |= SDL_HWACCEL; | |
| 913 | |
| 914 /* Set the surface attributes */ | |
| 915 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { | |
| 916 if ( ! this->info.blit_hw_A ) { | |
| 917 src->flags &= ~SDL_HWACCEL; | |
| 918 } | |
| 919 } | |
| 920 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 921 if ( ! this->info.blit_hw_CC ) { | |
| 922 src->flags &= ~SDL_HWACCEL; | |
| 923 } | |
| 924 } | |
| 925 | |
| 926 /* Check to see if final surface blit is accelerated */ | |
| 927 accelerated = !!(src->flags & SDL_HWACCEL); | |
| 928 if ( accelerated ) { | |
| 929 src->map->hw_blit = HWAccelBlit; | |
| 930 } | |
| 931 return(accelerated); | |
| 932 } | |
| 933 | |
|
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934 static __inline__ void DGA_WaitFlip(_THIS) |
| 0 | 935 { |
| 936 if ( was_flipped ) { | |
|
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937 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 938 /* Keep waiting for the hardware ... */ ; |
| 939 was_flipped = 0; | |
| 940 } | |
| 941 } | |
| 942 | |
| 943 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface) | |
| 944 { | |
|
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945 if ( surface == this->screen ) { |
| 0 | 946 SDL_mutexP(hw_lock); |
|
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947 LOCK_DISPLAY(); |
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948 if ( DGA_IsSurfaceBusy(surface) ) { |
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949 DGA_WaitBusySurfaces(this); |
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950 } |
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951 DGA_WaitFlip(this); |
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952 UNLOCK_DISPLAY(); |
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953 } else { |
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954 if ( DGA_IsSurfaceBusy(surface) ) { |
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955 LOCK_DISPLAY(); |
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956 DGA_WaitBusySurfaces(this); |
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957 UNLOCK_DISPLAY(); |
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958 } |
| 0 | 959 } |
| 960 return(0); | |
| 961 } | |
| 962 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface) | |
| 963 { | |
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964 if ( surface == this->screen ) { |
| 0 | 965 SDL_mutexV(hw_lock); |
| 966 } | |
| 967 } | |
| 968 | |
| 969 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface) | |
| 970 { | |
| 971 /* Wait for vertical retrace and then flip display */ | |
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972 LOCK_DISPLAY(); |
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973 if ( DGA_IsSurfaceBusy(this->screen) ) { |
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974 DGA_WaitBusySurfaces(this); |
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975 } |
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976 DGA_WaitFlip(this); |
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977 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, |
| 0 | 978 0, flip_yoffset[flip_page], XDGAFlipRetrace); |
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979 XFlush(DGA_Display); |
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980 UNLOCK_DISPLAY(); |
| 0 | 981 was_flipped = 1; |
| 982 flip_page = !flip_page; | |
| 983 | |
| 984 surface->pixels = flip_address[flip_page]; | |
| 985 return(0); | |
| 986 } | |
| 987 | |
| 988 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) | |
| 989 { | |
| 990 /* The application is already updating the visible video memory */ | |
| 991 return; | |
| 992 } | |
| 993 | |
| 994 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) | |
| 995 { | |
| 996 int i; | |
| 997 XColor *xcmap; | |
| 998 | |
| 999 /* This happens on initialization */ | |
| 1000 if ( ! DGA_colormap ) { | |
| 1001 return(0); | |
| 1002 } | |
|
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1003 xcmap = SDL_stack_alloc(XColor, ncolors); |
| 0 | 1004 for ( i=0; i<ncolors; ++i ) { |
| 1005 xcmap[i].pixel = firstcolor + i; | |
| 1006 xcmap[i].red = (colors[i].r<<8)|colors[i].r; | |
| 1007 xcmap[i].green = (colors[i].g<<8)|colors[i].g; | |
| 1008 xcmap[i].blue = (colors[i].b<<8)|colors[i].b; | |
| 1009 xcmap[i].flags = (DoRed|DoGreen|DoBlue); | |
| 1010 } | |
|
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1011 LOCK_DISPLAY(); |
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1012 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
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1013 XSync(DGA_Display, False); |
|
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1014 UNLOCK_DISPLAY(); |
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1015 SDL_stack_free(xcmap); |
| 0 | 1016 |
| 1017 /* That was easy. :) */ | |
| 1018 return(1); | |
| 1019 } | |
| 1020 | |
| 1021 int DGA_SetGammaRamp(_THIS, Uint16 *ramp) | |
| 1022 { | |
| 1023 int i, ncolors; | |
| 1024 XColor xcmap[256]; | |
| 1025 | |
| 1026 /* See if actually setting the gamma is supported */ | |
| 1027 if ( DGA_visualClass != DirectColor ) { | |
| 1028 SDL_SetError("Gamma correction not supported on this visual"); | |
| 1029 return(-1); | |
| 1030 } | |
| 1031 | |
| 1032 /* Calculate the appropriate palette for the given gamma ramp */ | |
| 1033 if ( this->screen->format->BitsPerPixel <= 16 ) { | |
| 1034 ncolors = 64; /* Is this right? */ | |
| 1035 } else { | |
| 1036 ncolors = 256; | |
| 1037 } | |
| 1038 for ( i=0; i<ncolors; ++i ) { | |
| 1039 Uint8 c = (256 * i / ncolors); | |
| 1040 xcmap[i].pixel = SDL_MapRGB(this->screen->format, c, c, c); | |
| 1041 xcmap[i].red = ramp[0*256+c]; | |
| 1042 xcmap[i].green = ramp[1*256+c]; | |
| 1043 xcmap[i].blue = ramp[2*256+c]; | |
| 1044 xcmap[i].flags = (DoRed|DoGreen|DoBlue); | |
| 1045 } | |
|
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1046 LOCK_DISPLAY(); |
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1047 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
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1048 XSync(DGA_Display, False); |
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1049 UNLOCK_DISPLAY(); |
| 0 | 1050 return(0); |
| 1051 } | |
| 1052 | |
| 1053 void DGA_VideoQuit(_THIS) | |
| 1054 { | |
| 1055 int i, j; | |
| 1056 | |
| 1057 if ( DGA_Display ) { | |
| 1058 /* Free colormap, if necessary */ | |
| 1059 if ( DGA_colormap ) { | |
|
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1060 XFreeColormap(DGA_Display, DGA_colormap); |
| 0 | 1061 DGA_colormap = 0; |
| 1062 } | |
| 1063 | |
| 1064 /* Unmap memory and reset video mode */ | |
|
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1065 SDL_NAME(XDGACloseFramebuffer)(DGA_Display, DGA_Screen); |
| 0 | 1066 if ( this->screen ) { |
| 1067 /* Tell SDL not to free the pixels */ | |
| 1786 | 1068 DGA_FreeHWSurface(this, this->screen); |
| 0 | 1069 } |
|
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1070 SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, 0); |
| 0 | 1071 |
| 1072 /* Clear the lock mutex */ | |
| 1073 if ( hw_lock != NULL ) { | |
| 1074 SDL_DestroyMutex(hw_lock); | |
| 1075 hw_lock = NULL; | |
| 1076 } | |
|
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1077 #ifdef LOCK_DGA_DISPLAY |
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1078 if ( event_lock != NULL ) { |
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1079 SDL_DestroyMutex(event_lock); |
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1080 event_lock = NULL; |
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1081 } |
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1082 #endif /* LOCK_DGA_DISPLAY */ |
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1083 |
| 0 | 1084 /* Clean up defined video modes */ |
| 1085 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
| 1086 if ( SDL_modelist[i] != NULL ) { | |
| 1087 for ( j=0; SDL_modelist[i][j]; ++j ) { | |
|
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1088 SDL_free(SDL_modelist[i][j]); |
| 0 | 1089 } |
|
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1090 SDL_free(SDL_modelist[i]); |
| 0 | 1091 SDL_modelist[i] = NULL; |
| 1092 } | |
| 1093 } | |
| 1094 | |
| 1095 /* Clean up the memory bucket list */ | |
| 1096 DGA_FreeHWSurfaces(this); | |
| 1097 | |
| 1098 /* Close up the display */ | |
|
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1099 XCloseDisplay(DGA_Display); |
| 0 | 1100 } |
| 1101 } |