SDL_Surface *
SDL_SetVideoMode(int width, int height, int bpp, Uint32 flags)
{
SDL_DisplayMode desktop_mode;
int display = GetVideoDisplay();
int window_x = SDL_WINDOWPOS_UNDEFINED_DISPLAY(display);
int window_y = SDL_WINDOWPOS_UNDEFINED_DISPLAY(display);
int window_w;
int window_h;
Uint32 window_flags;
Uint32 surface_flags;
if (!SDL_GetVideoDevice()) {
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0) {
return NULL;
}
}
SDL_GetDesktopDisplayMode(display, &desktop_mode);
if (width == 0) {
width = desktop_mode.w;
}
if (height == 0) {
height = desktop_mode.h;
}
if (bpp == 0) {
bpp = SDL_BITSPERPIXEL(desktop_mode.format);
}
/* See if we can simply resize the existing window and surface */
if (SDL_ResizeVideoMode(width, height, bpp, flags) == 0) {
return SDL_PublicSurface;
}
/* Destroy existing window */
SDL_PublicSurface = NULL;
if (SDL_ShadowSurface) {
SDL_ShadowSurface->flags &= ~SDL_DONTFREE;
SDL_FreeSurface(SDL_ShadowSurface);
SDL_ShadowSurface = NULL;
}
if (SDL_VideoSurface) {
SDL_VideoSurface->flags &= ~SDL_DONTFREE;
SDL_FreeSurface(SDL_VideoSurface);
SDL_VideoSurface = NULL;
}
if (SDL_VideoContext) {
/* SDL_GL_MakeCurrent(0, NULL); *//* Doesn't do anything */
SDL_GL_DeleteContext(SDL_VideoContext);
SDL_VideoContext = NULL;
}
if (SDL_VideoWindow) {
SDL_GetWindowPosition(SDL_VideoWindow, &window_x, &window_y);
SDL_DestroyWindow(SDL_VideoWindow);
}
/* Set up the event filter */
if (!SDL_GetEventFilter(NULL, NULL)) {
SDL_SetEventFilter(SDL_CompatEventFilter, NULL);
}
/* Create a new window */
window_flags = SDL_WINDOW_SHOWN;
if (flags & SDL_FULLSCREEN) {
window_flags |= SDL_WINDOW_FULLSCREEN;
}
if (flags & SDL_OPENGL) {
window_flags |= SDL_WINDOW_OPENGL;
}
if (flags & SDL_RESIZABLE) {
window_flags |= SDL_WINDOW_RESIZABLE;
}
if (flags & SDL_NOFRAME) {
window_flags |= SDL_WINDOW_BORDERLESS;
}
GetEnvironmentWindowPosition(width, height, &window_x, &window_y);
SDL_VideoWindow =
SDL_CreateWindow(wm_title, window_x, window_y, width, height,
window_flags);
if (!SDL_VideoWindow) {
return NULL;
}
SDL_SetWindowIcon(SDL_VideoWindow, SDL_VideoIcon);
SetupScreenSaver(flags);
window_flags = SDL_GetWindowFlags(SDL_VideoWindow);
surface_flags = 0;
if (window_flags & SDL_WINDOW_FULLSCREEN) {
surface_flags |= SDL_FULLSCREEN;
}
if ((window_flags & SDL_WINDOW_OPENGL) && (flags & SDL_OPENGL)) {
surface_flags |= SDL_OPENGL;
}
if (window_flags & SDL_WINDOW_RESIZABLE) {
surface_flags |= SDL_RESIZABLE;
}
if (window_flags & SDL_WINDOW_BORDERLESS) {
surface_flags |= SDL_NOFRAME;
}
SDL_VideoFlags = flags;
/* If we're in OpenGL mode, just create a stub surface and we're done! */
if (flags & SDL_OPENGL) {
SDL_VideoContext = SDL_GL_CreateContext(SDL_VideoWindow);
if (!SDL_VideoContext) {
return NULL;
}
if (SDL_GL_MakeCurrent(SDL_VideoWindow, SDL_VideoContext) < 0) {
return NULL;
}
SDL_VideoSurface =
SDL_CreateRGBSurfaceFrom(NULL, width, height, bpp, 0, 0, 0, 0, 0);
if (!SDL_VideoSurface) {
return NULL;
}
SDL_VideoSurface->flags |= surface_flags;
SDL_PublicSurface = SDL_VideoSurface;
return SDL_PublicSurface;
}
/* Create the screen surface */
SDL_WindowSurface = SDL_GetWindowSurface(SDL_VideoWindow);
if (!SDL_WindowSurface) {
return NULL;
}
/* Center the public surface in the window surface */
SDL_GetWindowSize(SDL_VideoWindow, &window_w, &window_h);
SDL_VideoViewport.x = (window_w - width)/2;
SDL_VideoViewport.y = (window_h - height)/2;
SDL_VideoViewport.w = width;
SDL_VideoViewport.h = height;
SDL_VideoSurface = SDL_CreateRGBSurfaceFrom(NULL, 0, 0, 32, 0, 0, 0, 0, 0);
SDL_VideoSurface->flags |= surface_flags;
SDL_VideoSurface->flags |= SDL_DONTFREE;
SDL_FreeFormat(SDL_VideoSurface->format);
SDL_VideoSurface->format = SDL_WindowSurface->format;
SDL_VideoSurface->format->refcount++;
SDL_VideoSurface->w = width;
SDL_VideoSurface->h = height;
SDL_VideoSurface->pitch = SDL_WindowSurface->pitch;
SDL_VideoSurface->pixels = (void *)((Uint8 *)SDL_WindowSurface->pixels +
SDL_VideoViewport.y * SDL_VideoSurface->pitch +
SDL_VideoViewport.x * SDL_VideoSurface->format->BytesPerPixel);
SDL_SetClipRect(SDL_VideoSurface, NULL);
/* Create a shadow surface if necessary */
if ((bpp != SDL_VideoSurface->format->BitsPerPixel)
&& !(flags & SDL_ANYFORMAT)) {
SDL_ShadowSurface =
SDL_CreateRGBSurface(0, width, height, bpp, 0, 0, 0, 0);
if (!SDL_ShadowSurface) {
return NULL;
}
SDL_ShadowSurface->flags |= surface_flags;
SDL_ShadowSurface->flags |= SDL_DONTFREE;
/* 8-bit SDL_ShadowSurface surfaces report that they have exclusive palette */
if (SDL_ShadowSurface->format->palette) {
SDL_ShadowSurface->flags |= SDL_HWPALETTE;
SDL_DitherColors(SDL_ShadowSurface->format->palette->colors,
SDL_ShadowSurface->format->BitsPerPixel);
}
SDL_FillRect(SDL_ShadowSurface, NULL,
SDL_MapRGB(SDL_ShadowSurface->format, 0, 0, 0));
}
SDL_PublicSurface =
(SDL_ShadowSurface ? SDL_ShadowSurface : SDL_VideoSurface);
ClearVideoSurface();
/* We're finally done! */
return SDL_PublicSurface;
}
SDL_Surface *
SDL_SetVideoMode(int width, int height, int bpp, Uint32 flags)
{
SDL_DisplayMode desktop_mode;
SDL_DisplayMode mode;
int window_x = SDL_WINDOWPOS_UNDEFINED;
int window_y = SDL_WINDOWPOS_UNDEFINED;
Uint32 window_flags;
Uint32 desktop_format;
Uint32 desired_format;
Uint32 surface_flags;
if (!SDL_GetVideoDevice()) {
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0) {
return NULL;
}
}
SDL_GetDesktopDisplayMode(&desktop_mode);
if (width == 0) {
width = desktop_mode.w;
}
if (height == 0) {
height = desktop_mode.h;
}
/* See if we can simply resize the existing window and surface */
if (SDL_ResizeVideoMode(width, height, bpp, flags) == 0) {
return SDL_PublicSurface;
}
/* Destroy existing window */
SDL_PublicSurface = NULL;
if (SDL_ShadowSurface) {
SDL_FreeSurface(SDL_ShadowSurface);
SDL_ShadowSurface = NULL;
}
if (SDL_VideoSurface) {
SDL_DelPaletteWatch(SDL_VideoSurface->format->palette,
SDL_VideoPaletteChanged, NULL);
SDL_FreeSurface(SDL_VideoSurface);
SDL_VideoSurface = NULL;
}
if (SDL_VideoContext) {
/* SDL_GL_MakeCurrent(0, NULL); *//* Doesn't do anything */
SDL_GL_DeleteContext(SDL_VideoContext);
SDL_VideoContext = NULL;
}
if (SDL_VideoWindow) {
SDL_GetWindowPosition(SDL_VideoWindow, &window_x, &window_y);
SDL_DestroyWindow(SDL_VideoWindow);
}
/* Set up the event filter */
if (!SDL_GetEventFilter(NULL, NULL)) {
SDL_SetEventFilter(SDL_CompatEventFilter, NULL);
}
/* Create a new window */
window_flags = SDL_WINDOW_SHOWN;
if (flags & SDL_FULLSCREEN) {
window_flags |= SDL_WINDOW_FULLSCREEN;
}
if (flags & SDL_OPENGL) {
window_flags |= SDL_WINDOW_OPENGL;
}
if (flags & SDL_RESIZABLE) {
window_flags |= SDL_WINDOW_RESIZABLE;
}
if (flags & SDL_NOFRAME) {
window_flags |= SDL_WINDOW_BORDERLESS;
}
GetEnvironmentWindowPosition(width, height, &window_x, &window_y);
SDL_SetFullscreenDisplayMode(NULL);
SDL_VideoWindow =
SDL_CreateWindow(wm_title, window_x, window_y, width, height,
window_flags);
if (!SDL_VideoWindow) {
return NULL;
}
SDL_SetWindowIcon(SDL_VideoWindow, SDL_VideoIcon);
window_flags = SDL_GetWindowFlags(SDL_VideoWindow);
surface_flags = 0;
if (window_flags & SDL_WINDOW_FULLSCREEN) {
surface_flags |= SDL_FULLSCREEN;
}
if (window_flags & SDL_WINDOW_OPENGL) {
surface_flags |= SDL_OPENGL;
}
if (window_flags & SDL_WINDOW_RESIZABLE) {
surface_flags |= SDL_RESIZABLE;
}
if (window_flags & SDL_WINDOW_BORDERLESS) {
surface_flags |= SDL_NOFRAME;
}
/* Set up the desired display mode */
desktop_format = desktop_mode.format;
if (desktop_format && ((flags & SDL_ANYFORMAT)
|| (bpp == SDL_BITSPERPIXEL(desktop_format)))) {
desired_format = desktop_format;
} else {
switch (bpp) {
case 0:
if (desktop_format) {
desired_format = desktop_format;
} else {
desired_format = SDL_PIXELFORMAT_RGB888;
}
bpp = SDL_BITSPERPIXEL(desired_format);
break;
case 8:
desired_format = SDL_PIXELFORMAT_INDEX8;
break;
case 15:
desired_format = SDL_PIXELFORMAT_RGB555;
break;
case 16:
desired_format = SDL_PIXELFORMAT_RGB565;
break;
case 24:
desired_format = SDL_PIXELFORMAT_RGB24;
break;
case 32:
desired_format = SDL_PIXELFORMAT_RGB888;
break;
default:
SDL_SetError("Unsupported bpp in SDL_SetVideoMode()");
return NULL;
}
}
mode.format = desired_format;
mode.w = width;
mode.h = height;
mode.refresh_rate = 0;
/* Set the desired display mode */
if (flags & SDL_FULLSCREEN) {
if (SDL_SetFullscreenDisplayMode(&mode) < 0) {
return NULL;
}
}
/* If we're in OpenGL mode, just create a stub surface and we're done! */
if (flags & SDL_OPENGL) {
SDL_VideoContext = SDL_GL_CreateContext(SDL_VideoWindow);
if (!SDL_VideoContext) {
return NULL;
}
if (SDL_GL_MakeCurrent(SDL_VideoWindow, SDL_VideoContext) < 0) {
return NULL;
}
SDL_VideoSurface =
SDL_CreateRGBSurfaceFrom(NULL, width, height, bpp, 0, 0, 0, 0, 0);
if (!SDL_VideoSurface) {
return NULL;
}
SDL_VideoSurface->flags |= surface_flags;
SDL_PublicSurface = SDL_VideoSurface;
return SDL_PublicSurface;
}
/* Create a renderer for the window */
if (SDL_CreateRenderer
(SDL_VideoWindow, -1,
SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTDISCARD) < 0) {
return NULL;
}
SDL_GetRendererInfo(&SDL_VideoRendererInfo);
/* Create a texture for the screen surface */
SDL_VideoTexture =
SDL_CreateTexture(desired_format, SDL_TEXTUREACCESS_STREAMING, width,
height);
if (!SDL_VideoTexture) {
SDL_VideoTexture =
SDL_CreateTexture(desktop_format,
SDL_TEXTUREACCESS_STREAMING, width, height);
}
if (!SDL_VideoTexture) {
return NULL;
}
/* Create the screen surface */
SDL_VideoSurface = CreateVideoSurface(SDL_VideoTexture);
if (!SDL_VideoSurface) {
return NULL;
}
SDL_VideoSurface->flags |= surface_flags;
/* Set a default screen palette */
if (SDL_VideoSurface->format->palette) {
SDL_VideoSurface->flags |= SDL_HWPALETTE;
SDL_DitherColors(SDL_VideoSurface->format->palette->colors,
SDL_VideoSurface->format->BitsPerPixel);
SDL_AddPaletteWatch(SDL_VideoSurface->format->palette,
SDL_VideoPaletteChanged, SDL_VideoSurface);
SDL_SetPaletteColors(SDL_VideoSurface->format->palette,
SDL_VideoSurface->format->palette->colors, 0,
SDL_VideoSurface->format->palette->ncolors);
}
/* Create a shadow surface if necessary */
if ((bpp != SDL_VideoSurface->format->BitsPerPixel)
&& !(flags & SDL_ANYFORMAT)) {
SDL_ShadowSurface =
SDL_CreateRGBSurface(0, width, height, bpp, 0, 0, 0, 0);
if (!SDL_ShadowSurface) {
return NULL;
}
SDL_ShadowSurface->flags |= surface_flags;
/* 8-bit SDL_ShadowSurface surfaces report that they have exclusive palette */
if (SDL_ShadowSurface->format->palette) {
SDL_ShadowSurface->flags |= SDL_HWPALETTE;
if (SDL_VideoSurface->format->palette) {
SDL_SetSurfacePalette(SDL_ShadowSurface,
SDL_VideoSurface->format->palette);
} else {
SDL_DitherColors(SDL_ShadowSurface->format->palette->colors,
SDL_ShadowSurface->format->BitsPerPixel);
}
SDL_AddPaletteWatch(SDL_ShadowSurface->format->palette,
SDL_VideoPaletteChanged, SDL_ShadowSurface);
}
}
SDL_PublicSurface =
(SDL_ShadowSurface ? SDL_ShadowSurface : SDL_VideoSurface);
SDL_VideoFlags = flags;
ClearVideoSurface();
SetupScreenSaver(flags);
/* We're finally done! */
return SDL_PublicSurface;
}