static void ApplyWindowResize(unsigned int w, unsigned int h)
{
screen_mode_t *mode;
// Find the biggest screen mode that will fall within these
// dimensions, falling back to the smallest mode possible if
// none is found.
mode = I_FindScreenMode(w, h);
if (mode == NULL)
{
mode = I_FindScreenMode(SCREENWIDTH, SCREENHEIGHT);
}
// Reset mode to resize window.
printf("Resize to %ix%i\n", mode->width, mode->height);
SetVideoMode(mode, mode->width, mode->height);
// Save settings.
screen_width = mode->width;
screen_height = mode->height;
}
static void AutoAdjustWindowed(void)
{
screen_mode_t *best_mode;
// Find a screen_mode_t to fit within the current settings
best_mode = I_FindScreenMode(screen_width, screen_height);
if (best_mode == NULL)
{
// Nothing fits within the current settings.
// Pick the closest to 320x200 possible.
best_mode = I_FindScreenMode(SCREENWIDTH, SCREENHEIGHT_4_3);
}
// Switch to the best mode if necessary.
if (best_mode->width != screen_width || best_mode->height != screen_height)
{
printf("I_InitGraphics: Cannot run at specified mode: %ix%i\n",
screen_width, screen_height);
screen_width = best_mode->width;
screen_height = best_mode->height;
}
}
void I_InitGraphics(void)
{
SDL_Event dummy;
byte *doompal;
char *env;
// Pass through the XSCREENSAVER_WINDOW environment variable to
// SDL_WINDOWID, to embed the SDL window into the Xscreensaver
// window.
env = getenv("XSCREENSAVER_WINDOW");
if (env != NULL)
{
char winenv[30];
int winid;
sscanf(env, "0x%x", &winid);
M_snprintf(winenv, sizeof(winenv), "SDL_WINDOWID=%i", winid);
putenv(winenv);
}
SetSDLVideoDriver();
SetWindowPositionVars();
if (SDL_Init(SDL_INIT_VIDEO) < 0)
{
I_Error("Failed to initialize video: %s", SDL_GetError());
}
// Set up title and icon. Windows cares about the ordering; this
// has to be done before the call to SDL_SetVideoMode.
I_InitWindowTitle();
I_InitWindowIcon();
// Warning to OS X users... though they might never see it :(
#ifdef __MACOSX__
if (fullscreen)
{
printf("Some old versions of OS X might crash in fullscreen mode.\n"
"If this happens to you, switch back to windowed mode.\n");
}
#endif
//
// Enter into graphics mode.
//
// When in screensaver mode, run full screen and auto detect
// screen dimensions (don't change video mode)
//
if (screensaver_mode)
{
SetVideoMode(NULL, 0, 0);
}
else
{
int w, h;
if (autoadjust_video_settings)
{
I_AutoAdjustSettings();
}
w = screen_width;
h = screen_height;
screen_mode = I_FindScreenMode(w, h);
if (screen_mode == NULL)
{
I_Error("I_InitGraphics: Unable to find a screen mode small "
"enough for %ix%i", w, h);
}
if (w != screen_mode->width || h != screen_mode->height)
{
printf("I_InitGraphics: %s (%ix%i within %ix%i)\n",
WindowBoxType(screen_mode, w, h),
screen_mode->width, screen_mode->height, w, h);
}
SetVideoMode(screen_mode, w, h);
}
// Start with a clear black screen
// (screen will be flipped after we set the palette)
SDL_FillRect(screenbuffer, NULL, 0);
// Set the palette
doompal = W_CacheLumpName(DEH_String("PLAYPAL"), PU_CACHE);
I_SetPalette(doompal);
SDL_SetColors(screenbuffer, palette, 0, 256);
CreateCursors();
UpdateFocus();
UpdateGrab();
// On some systems, it takes a second or so for the screen to settle
// after changing modes. We include the option to add a delay when
// setting the screen mode, so that the game doesn't start immediately
// with the player unable to see anything.
if (fullscreen && !screensaver_mode)
{
SDL_Delay(startup_delay);
}
// Check if we have a native surface we can use
// If we have to lock the screen, draw to a buffer and copy
// Likewise if the screen pitch is not the same as the width
// If we have to multiply, drawing is done to a separate 320x200 buf
native_surface = screen == screenbuffer
&& !SDL_MUSTLOCK(screen)
&& screen_mode == &mode_scale_1x
&& screen->pitch == SCREENWIDTH
&& aspect_ratio_correct;
// If not, allocate a buffer and copy from that buffer to the
// screen when we do an update
if (native_surface)
{
I_VideoBuffer = (unsigned char *) screen->pixels;
I_VideoBuffer += (screen->h - SCREENHEIGHT) / 2;
}
else
{
I_VideoBuffer = (unsigned char *) Z_Malloc (SCREENWIDTH * SCREENHEIGHT,
PU_STATIC, NULL);
}
V_RestoreBuffer();
// Clear the screen to black.
memset(I_VideoBuffer, 0, SCREENWIDTH * SCREENHEIGHT);
// We need SDL to give us translated versions of keys as well
SDL_EnableUNICODE(1);
// Repeat key presses - this is what Vanilla Doom does
// Not sure about repeat rate - probably dependent on which DOS
// driver is used. This is good enough though.
SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
// clear out any events waiting at the start and center the mouse
while (SDL_PollEvent(&dummy));
initialized = true;
// Call I_ShutdownGraphics on quit
I_AtExit(I_ShutdownGraphics, true);
}
static void SetVideoMode(screen_mode_t *mode, int w, int h)
{
byte *doompal;
int flags = 0;
doompal = W_CacheLumpName(DEH_String("PLAYPAL"), PU_CACHE);
// If we are already running and in a true color mode, we need
// to free the screenbuffer surface before setting the new mode.
if (screenbuffer != NULL && screen != screenbuffer)
{
SDL_FreeSurface(screenbuffer);
}
// Generate lookup tables before setting the video mode.
if (mode != NULL && mode->InitMode != NULL)
{
mode->InitMode(doompal);
}
// Set the video mode.
flags |= SDL_SWSURFACE | SDL_DOUBLEBUF;
if (screen_bpp == 8)
{
flags |= SDL_HWPALETTE;
}
if (fullscreen)
{
flags |= SDL_FULLSCREEN;
}
else
{
// In windowed mode, the window can be resized while the game is
// running. This feature is disabled on OS X, as it adds an ugly
// scroll handle to the corner of the screen.
#ifndef __MACOSX__
flags |= SDL_RESIZABLE;
#endif
}
screen = SDL_SetVideoMode(w, h, screen_bpp, flags);
if (screen == NULL)
{
I_Error("Error setting video mode %ix%ix%ibpp: %s\n",
w, h, screen_bpp, SDL_GetError());
}
// Blank out the full screen area in case there is any junk in
// the borders that won't otherwise be overwritten.
SDL_FillRect(screen, NULL, 0);
// If mode was not set, it must be set now that we know the
// screen size.
if (mode == NULL)
{
mode = I_FindScreenMode(screen->w, screen->h);
if (mode == NULL)
{
I_Error("I_InitGraphics: Unable to find a screen mode small "
"enough for %ix%i", screen->w, screen->h);
}
// Generate lookup tables before setting the video mode.
if (mode->InitMode != NULL)
{
mode->InitMode(doompal);
}
}
// Create the screenbuffer surface; if we have a real 8-bit palettized
// screen, then we can use the screen as the screenbuffer.
if (screen->format->BitsPerPixel == 8)
{
screenbuffer = screen;
}
else
{
screenbuffer = SDL_CreateRGBSurface(SDL_SWSURFACE,
mode->width, mode->height, 8,
0, 0, 0, 0);
SDL_FillRect(screenbuffer, NULL, 0);
}
// Save screen mode.
screen_mode = mode;
}
static boolean AutoAdjustFullscreen(void)
{
SDL_Rect **modes;
SDL_Rect *best_mode;
screen_mode_t *screen_mode;
int diff, best_diff;
int i;
modes = SDL_ListModes(NULL, SDL_FULLSCREEN);
// No fullscreen modes available at all?
if (modes == NULL || modes == (SDL_Rect **) -1 || *modes == NULL)
{
return false;
}
// Find the best mode that matches the mode specified in the
// configuration file
best_mode = NULL;
best_diff = INT_MAX;
for (i=0; modes[i] != NULL; ++i)
{
//printf("%ix%i?\n", modes[i]->w, modes[i]->h);
// What screen_mode_t would be used for this video mode?
screen_mode = I_FindScreenMode(modes[i]->w, modes[i]->h);
// Never choose a screen mode that we cannot run in, or
// is poor quality for fullscreen
if (screen_mode == NULL || screen_mode->poor_quality)
{
// printf("\tUnsupported / poor quality\n");
continue;
}
// Do we have the exact mode?
// If so, no autoadjust needed
if (screen_width == modes[i]->w && screen_height == modes[i]->h)
{
// printf("\tExact mode!\n");
return true;
}
// Is this mode better than the current mode?
diff = (screen_width - modes[i]->w) * (screen_width - modes[i]->w)
+ (screen_height - modes[i]->h) * (screen_height - modes[i]->h);
if (diff < best_diff)
{
// printf("\tA valid mode\n");
best_mode = modes[i];
best_diff = diff;
}
}
if (best_mode == NULL)
{
// Unable to find a valid mode!
return false;
}
printf("I_InitGraphics: %ix%i mode not supported on this machine.\n",
screen_width, screen_height);
screen_width = best_mode->w;
screen_height = best_mode->h;
return true;
}
void I_InitGraphics(void)
{
SDL_Event dummy;
byte *doompal;
int flags = 0;
char *env;
// Pass through the XSCREENSAVER_WINDOW environment variable to
// SDL_WINDOWID, to embed the SDL window into the Xscreensaver
// window.
env = getenv("XSCREENSAVER_WINDOW");
if (env != NULL)
{
char winenv[30];
int winid;
sscanf(env, "0x%x", &winid);
sprintf(winenv, "SDL_WINDOWID=%i", winid);
putenv(winenv);
}
SetSDLVideoDriver();
if (SDL_Init(SDL_INIT_VIDEO) < 0)
{
I_Error("Failed to initialize video: %s", SDL_GetError());
}
// Check for command-line video-related parameters.
CheckCommandLine();
doompal = W_CacheLumpName (DEH_String("PLAYPAL"),PU_CACHE);
if (screensaver_mode)
{
windowwidth = 0;
windowheight = 0;
}
else
{
if (autoadjust_video_settings)
{
I_AutoAdjustSettings();
}
windowwidth = screen_width;
windowheight = screen_height;
screen_mode = I_FindScreenMode(windowwidth, windowheight);
if (screen_mode == NULL)
{
I_Error("I_InitGraphics: Unable to find a screen mode small "
"enough for %ix%i", windowwidth, windowheight);
}
if (windowwidth != screen_mode->width
|| windowheight != screen_mode->height)
{
printf("I_InitGraphics: %s (%ix%i within %ix%i)\n",
WindowBoxType(screen_mode, windowwidth, windowheight),
screen_mode->width, screen_mode->height,
windowwidth, windowheight);
}
// Generate lookup tables before setting the video mode.
if (screen_mode->InitMode != NULL)
{
screen_mode->InitMode(doompal);
}
}
// Set up title and icon. Windows cares about the ordering; this
// has to be done before the call to SDL_SetVideoMode.
I_SetWindowCaption();
#if !SDL_VERSION_ATLEAST(1, 3, 0)
I_SetWindowIcon();
#endif
// Set the video mode.
flags |= SDL_SWSURFACE | SDL_HWPALETTE | SDL_DOUBLEBUF;
if (fullscreen)
{
flags |= SDL_FULLSCREEN;
}
screen = SDL_SetVideoMode(windowwidth, windowheight, 8, flags);
if (screen == NULL)
{
I_Error("Error setting video mode: %s\n", SDL_GetError());
}
// Start with a clear black screen
// (screen will be flipped after we set the palette)
if (SDL_LockSurface(screen) >= 0)
{
byte *screenpixels;
int y;
screenpixels = (byte *) screen->pixels;
for (y=0; y<screen->h; ++y)
memset(screenpixels + screen->pitch * y, 0, screen->w);
SDL_UnlockSurface(screen);
}
// Set the palette
I_SetPalette(doompal);
SDL_SetColors(screen, palette, 0, 256);
CreateCursors();
UpdateFocus();
UpdateGrab();
// In screensaver mode, now find a screen_mode to use.
if (screensaver_mode)
{
screen_mode = I_FindScreenMode(screen->w, screen->h);
if (screen_mode == NULL)
{
I_Error("I_InitGraphics: Unable to find a screen mode small "
"enough for %ix%i", screen->w, screen->h);
}
// Generate lookup tables before setting the video mode.
if (screen_mode->InitMode != NULL)
{
screen_mode->InitMode(doompal);
}
}
// On some systems, it takes a second or so for the screen to settle
// after changing modes. We include the option to add a delay when
// setting the screen mode, so that the game doesn't start immediately
// with the player unable to see anything.
if (fullscreen && !screensaver_mode)
{
SDL_Delay(startup_delay);
}
// Check if we have a native surface we can use
// If we have to lock the screen, draw to a buffer and copy
// Likewise if the screen pitch is not the same as the width
// If we have to multiply, drawing is done to a separate 320x200 buf
native_surface = !SDL_MUSTLOCK(screen)
&& screen_mode == &mode_scale_1x
&& screen->pitch == SCREENWIDTH
&& aspect_ratio_correct;
// If not, allocate a buffer and copy from that buffer to the
// screen when we do an update
if (native_surface)
{
screens[0] = (unsigned char *) screen->pixels;
screens[0] += (screen->h - SCREENHEIGHT) / 2;
}
else
{
screens[0] = (unsigned char *) Z_Malloc (SCREENWIDTH * SCREENHEIGHT,
PU_STATIC, NULL);
}
// "Loading from disk" icon
LoadDiskImage();
// Clear the screen to black.
memset(screens[0], 0, SCREENWIDTH * SCREENHEIGHT);
// We need SDL to give us translated versions of keys as well
SDL_EnableUNICODE(1);
// Repeat key presses - this is what Vanilla Doom does
// Not sure about repeat rate - probably dependent on which DOS
// driver is used. This is good enough though.
SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
// clear out any events waiting at the start and center the mouse
while (SDL_PollEvent(&dummy));
if (usemouse && !nomouse && (fullscreen || grabmouse))
{
CenterMouse();
}
initialized = true;
}
static void SetScaleFactor(int factor)
{
if (fullscreen)
{
// In fullscreen, find a mode that will provide this scale factor
SDL_Rect **modes;
SDL_Rect *best_mode;
screen_mode_t *scrmode;
int best_num_pixels, num_pixels;
int i;
modes = SDL_ListModes(NULL, SDL_FULLSCREEN);
best_mode = NULL;
best_num_pixels = INT_MAX;
for (i=0; modes[i] != NULL; ++i)
{
// What screen_mode_t will this use?
scrmode = I_FindScreenMode(modes[i]->w, modes[i]->h);
if (scrmode == NULL)
{
continue;
}
// Only choose modes that fit the requested scale factor.
//
// Note that this allows 320x240 as valid for 1x scale, as
// 240/200 is rounded down to 1 by integer division.
if ((scrmode->width / SCREENWIDTH) != factor
|| (scrmode->height / SCREENHEIGHT) != factor)
{
continue;
}
// Is this a better mode than what we currently have?
num_pixels = modes[i]->w * modes[i]->h;
if (num_pixels < best_num_pixels)
{
best_num_pixels = num_pixels;
best_mode = modes[i];
}
}
if (best_mode == NULL)
{
I_Error("No fullscreen graphics mode available to support "
"%ix scale factor!", factor);
}
screen_width = best_mode->w;
screen_height = best_mode->h;
}
else
{
int w, h;
// Pick 320x200 or 320x240, depending on aspect ratio correct
if (aspect_ratio_correct)
{
w = SCREENWIDTH;
h = SCREENHEIGHT_4_3;
}
else
{
w = SCREENWIDTH;
h = SCREENHEIGHT;
}
screen_width = w * factor;
screen_height = h * factor;
}
}