Mercurial > sdl-ios-xcode
annotate src/video/dga/SDL_dgavideo.c @ 1748:5e86e34453d4
------- Comment #1 From Max Horn 2006-04-17 03:08 [reply] -------
Created an attachment (id=106) [edit]
Patch for src/joystick/win32/SDL_mmjoystick.c
I am not even a Windows user, so take the following with a grain of salt:
SDL_mmjoystick.c has a function GetJoystickName which obtains the joystick
name by looking at the registry. The way it does that seems very fishy to me.
Namely, it uses the parameter "index" to construct a registry value name (BTW,
those variables used in the code are really badly named). The value of "index"
in turn equals the current value of "numdevs", as called from
SDL_SYS_JoystickInit.
I read through the MSDN docs at
<http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/dnarinput/html/msdn_extdirect.asp>,
and I believe the simple fix is to replace line 183 of said file
SYS_JoystickName[numdevs] = GetJoystickName(numdevs, joycaps.szRegKey);
by the following:
SYS_JoystickName[numdevs] = GetJoystickName(SYS_JoystickID[i],
joycaps.szRegKey);
However, that is only *hiding* the real issue. Problem is, the list of
joysticks as returned by windows may contains "gaps", and the code deals
incorrectly with that. Namely those gaps occur if joysticks are
removed/(re)added, as the reporter observed.
The attached patch fixes this and another (off-by-one) issue in the code. But
since I have no Windows machine, I can't even test-compile it, so use with
caution.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 29 Apr 2006 20:22:31 +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; |
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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); |
|
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Updated dynamic X11 code. See details in Bugzilla #170.
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|
476 XFree(modes); |
| 0 | 477 if ( mode == NULL ) { |
| 478 SDL_SetError("Unable to switch to requested mode"); | |
| 479 return(NULL); | |
| 480 } | |
|
559
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Fixed invalid memory access in DGA video driver (thanks ldb!)
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|
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) ) { | |
|
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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 { | |
|
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514 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
| 0 | 515 mode, AllocNone); |
| 516 } | |
|
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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 */ | |
|
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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 } | |
|
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546 DGA_InitHWSurfaces(this, current, surfaces_mem, surfaces_len); |
| 0 | 547 |
|
202
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548 /* Expose the back buffer as surface memory */ |
|
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549 if ( current->flags & SDL_DOUBLEBUF ) { |
|
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550 this->screen = current; |
|
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551 DGA_FlipHWSurface(this, current); |
|
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552 this->screen = NULL; |
|
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553 } |
|
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|
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; | |
|
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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 | |
|
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599 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size) |
| 0 | 600 { |
|
101
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601 vidmem_bucket *bucket; |
|
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602 |
| 0 | 603 surfaces_memtotal = size; |
| 604 surfaces_memleft = size; | |
|
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605 |
|
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|
606 if ( surfaces_memleft > 0 ) { |
|
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607 bucket = (vidmem_bucket *)SDL_malloc(sizeof(*bucket)); |
|
101
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608 if ( bucket == NULL ) { |
|
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609 SDL_OutOfMemory(); |
|
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610 return(-1); |
|
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611 } |
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612 bucket->prev = &surfaces; |
|
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613 bucket->used = 0; |
|
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614 bucket->dirty = 0; |
|
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615 bucket->base = base; |
|
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616 bucket->size = size; |
|
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617 bucket->next = NULL; |
|
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618 } else { |
|
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|
619 bucket = NULL; |
|
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620 } |
|
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|
621 |
|
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|
622 surfaces.prev = NULL; |
|
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623 surfaces.used = 1; |
|
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624 surfaces.dirty = 0; |
|
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|
625 surfaces.base = screen->pixels; |
|
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626 surfaces.size = (unsigned int)((long)base - (long)surfaces.base); |
|
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diff
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|
627 surfaces.next = bucket; |
|
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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
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Use SDL_ prefixed versions of C library functions.
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|
639 SDL_free(freeable); |
| 0 | 640 } |
| 641 surfaces.next = NULL; | |
| 642 } | |
| 643 | |
|
105
2136ea8953f9
Some minor name changes to clean up
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parents:
102
diff
changeset
|
644 static __inline__ void DGA_AddBusySurface(SDL_Surface *surface) |
|
101
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645 { |
|
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646 ((vidmem_bucket *)surface->hwdata)->dirty = 1; |
|
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|
647 } |
|
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|
648 |
|
105
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Some minor name changes to clean up
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diff
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|
649 static __inline__ int DGA_IsSurfaceBusy(SDL_Surface *surface) |
|
101
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650 { |
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|
651 return ((vidmem_bucket *)surface->hwdata)->dirty; |
|
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|
652 } |
|
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|
653 |
|
105
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Some minor name changes to clean up
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diff
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|
654 static __inline__ void DGA_WaitBusySurfaces(_THIS) |
|
101
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|
655 { |
|
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|
656 vidmem_bucket *bucket; |
|
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|
657 |
|
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changeset
|
658 /* Wait for graphic operations to complete */ |
|
292
eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
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|
659 SDL_NAME(XDGASync)(DGA_Display, DGA_Screen); |
|
101
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|
660 |
|
825b2fa28e2e
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diff
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|
661 /* Clear all surface dirty bits */ |
|
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diff
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|
662 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
|
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diff
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|
663 bucket->dirty = 0; |
|
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|
664 } |
|
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|
665 } |
|
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changeset
|
666 |
| 0 | 667 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface) |
| 668 { | |
| 669 vidmem_bucket *bucket; | |
| 670 int size; | |
| 671 int extra; | |
|
101
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|
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 | |
|
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|
687 LOCK_DISPLAY(); |
| 0 | 688 |
| 689 /* Quick check for available mem */ | |
| 690 if ( size > surfaces_memleft ) { | |
| 691 SDL_SetError("Not enough video memory"); | |
|
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|
692 retval = -1; |
|
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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"); | |
|
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|
704 retval = -1; |
|
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|
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 | |
|
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Sam Lantinga <slouken@libsdl.org>
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|
716 newbucket = (vidmem_bucket *)SDL_malloc(sizeof(*newbucket)); |
| 0 | 717 if ( newbucket == NULL ) { |
| 718 SDL_OutOfMemory(); | |
|
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|
719 retval = -1; |
|
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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; | |
|
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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; | |
|
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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); |
|
1575
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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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parents:
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1014 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
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parents:
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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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parents:
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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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Added SDL_LockRect() and SDL_UnlockRect()
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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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Added SDL_LockRect() and SDL_UnlockRect()
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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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Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents:
1545
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|
1067 XCloseDisplay(DGA_Display); |
| 0 | 1068 } |
| 1069 } |