Mercurial > sdl-ios-xcode
view src/video/SDL_video.c @ 3473:7bdc10624cba
This is terrible, but the OpenGL standard says that lines are half open, which means that one endpoint is not covered so adjoining lines don't overlap. It also doesn't define which end is open, and indeed Mac OS X and Linux differ. Mac OS X seems to leave the second endpoint open, but Linux uses the right-most endpoint for x major lines and the bottom-most endpoint for y major lines.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 21 Nov 2009 07:14:21 +0000 |
| parents | 173199bce642 |
| children | e77a69aae239 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2009 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" /* The high-level video driver subsystem */ #include "SDL.h" #include "SDL_video.h" #include "SDL_sysvideo.h" #include "SDL_blit.h" #include "SDL_pixels_c.h" #include "SDL_renderer_gl.h" #include "SDL_renderer_gles.h" #include "SDL_renderer_sw.h" #include "../events/SDL_sysevents.h" #include "../events/SDL_events_c.h" #if SDL_VIDEO_OPENGL_ES #include "SDL_opengles.h" #endif /* SDL_VIDEO_OPENGL_ES */ #if SDL_VIDEO_OPENGL #include "SDL_opengl.h" /* On Windows, windows.h defines CreateWindow */ #ifdef CreateWindow #undef CreateWindow #endif #endif /* SDL_VIDEO_OPENGL */ /* Available video drivers */ static VideoBootStrap *bootstrap[] = { #if SDL_VIDEO_DRIVER_COCOA &COCOA_bootstrap, #endif #if SDL_VIDEO_DRIVER_X11 &X11_bootstrap, #endif #if SDL_VIDEO_DRIVER_FBCON &FBCON_bootstrap, #endif #if SDL_VIDEO_DRIVER_DIRECTFB &DirectFB_bootstrap, #endif #if SDL_VIDEO_DRIVER_PS2GS &PS2GS_bootstrap, #endif #if SDL_VIDEO_DRIVER_PS3 &PS3_bootstrap, #endif #if SDL_VIDEO_DRIVER_SVGALIB &SVGALIB_bootstrap, #endif #if SDL_VIDEO_DRIVER_GAPI &GAPI_bootstrap, #endif #if SDL_VIDEO_DRIVER_WIN32 &WIN32_bootstrap, #endif #if SDL_VIDEO_DRIVER_BWINDOW &BWINDOW_bootstrap, #endif #if SDL_VIDEO_DRIVER_PHOTON &photon_bootstrap, #endif #if SDL_VIDEO_DRIVER_QNXGF &qnxgf_bootstrap, #endif #if SDL_VIDEO_DRIVER_EPOC &EPOC_bootstrap, #endif #if SDL_VIDEO_DRIVER_RISCOS &RISCOS_bootstrap, #endif #if SDL_VIDEO_DRIVER_NDS &NDS_bootstrap, #endif #if SDL_VIDEO_DRIVER_UIKIT &UIKIT_bootstrap, #endif #if SDL_VIDEO_DRIVER_DUMMY &DUMMY_bootstrap, #endif #if SDL_VIDEO_DRIVER_PANDORA &PND_bootstrap, #endif NULL }; static SDL_VideoDevice *_this = NULL; /* Various local functions */ static void SDL_UpdateWindowGrab(SDL_Window * window); static int cmpmodes(const void *A, const void *B) { SDL_DisplayMode a = *(const SDL_DisplayMode *) A; SDL_DisplayMode b = *(const SDL_DisplayMode *) B; if (a.w != b.w) { return b.w - a.w; } if (a.h != b.h) { return b.h - a.h; } if (SDL_BITSPERPIXEL(a.format) != SDL_BITSPERPIXEL(b.format)) { return SDL_BITSPERPIXEL(b.format) - SDL_BITSPERPIXEL(a.format); } if (SDL_PIXELLAYOUT(a.format) != SDL_PIXELLAYOUT(b.format)) { return SDL_PIXELLAYOUT(b.format) - SDL_PIXELLAYOUT(a.format); } if (a.refresh_rate != b.refresh_rate) { return b.refresh_rate - a.refresh_rate; } return 0; } static void SDL_UninitializedVideo() { SDL_SetError("Video subsystem has not been initialized"); } int SDL_GetNumVideoDrivers(void) { return SDL_arraysize(bootstrap) - 1; } const char * SDL_GetVideoDriver(int index) { if (index >= 0 && index < SDL_GetNumVideoDrivers()) { return bootstrap[index]->name; } return NULL; } /* * Initialize the video and event subsystems -- determine native pixel format */ int SDL_VideoInit(const char *driver_name, Uint32 flags) { SDL_VideoDevice *video; int index; int i; /* Toggle the event thread flags, based on OS requirements */ #if defined(MUST_THREAD_EVENTS) flags |= SDL_INIT_EVENTTHREAD; #elif defined(CANT_THREAD_EVENTS) if ((flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD) { SDL_SetError("OS doesn't support threaded events"); return -1; } #endif /* Start the event loop */ if (SDL_StartEventLoop(flags) < 0) { return -1; } /* Check to make sure we don't overwrite '_this' */ if (_this != NULL) { SDL_VideoQuit(); } /* Select the proper video driver */ index = 0; video = NULL; if (driver_name == NULL) { driver_name = SDL_getenv("SDL_VIDEODRIVER"); } if (driver_name != NULL) { for (i = 0; bootstrap[i]; ++i) { if (SDL_strcasecmp(bootstrap[i]->name, driver_name) == 0) { video = bootstrap[i]->create(index); break; } } } else { for (i = 0; bootstrap[i]; ++i) { if (bootstrap[i]->available()) { video = bootstrap[i]->create(index); if (video != NULL) { break; } } } } if (video == NULL) { if (driver_name) { SDL_SetError("%s not available", driver_name); } else { SDL_SetError("No available video device"); } return -1; } _this = video; _this->name = bootstrap[i]->name; _this->next_object_id = 1; /* Set some very sane GL defaults */ _this->gl_config.driver_loaded = 0; _this->gl_config.dll_handle = NULL; _this->gl_config.red_size = 3; _this->gl_config.green_size = 3; _this->gl_config.blue_size = 2; _this->gl_config.alpha_size = 0; _this->gl_config.buffer_size = 0; _this->gl_config.depth_size = 16; _this->gl_config.stencil_size = 0; _this->gl_config.double_buffer = 1; _this->gl_config.accum_red_size = 0; _this->gl_config.accum_green_size = 0; _this->gl_config.accum_blue_size = 0; _this->gl_config.accum_alpha_size = 0; _this->gl_config.stereo = 0; _this->gl_config.multisamplebuffers = 0; _this->gl_config.multisamplesamples = 0; _this->gl_config.retained_backing = 1; _this->gl_config.accelerated = -1; /* not known, don't set */ _this->gl_config.major_version = 2; _this->gl_config.minor_version = 1; /* Initialize the video subsystem */ if (_this->VideoInit(_this) < 0) { SDL_VideoQuit(); return -1; } /* Make sure some displays were added */ if (_this->num_displays == 0) { SDL_SetError("The video driver did not add any displays"); SDL_VideoQuit(); return (-1); } /* The software renderer is always available */ for (i = 0; i < _this->num_displays; ++i) { if (_this->GL_CreateContext) { #if SDL_VIDEO_RENDER_OGL SDL_AddRenderDriver(i, &GL_RenderDriver); #endif #if SDL_VIDEO_RENDER_OGL_ES SDL_AddRenderDriver(i, &GL_ES_RenderDriver); #endif } if (_this->displays[i].num_render_drivers > 0) { SDL_AddRenderDriver(i, &SW_RenderDriver); } } /* We're ready to go! */ return 0; } const char * SDL_GetCurrentVideoDriver() { if (!_this) { SDL_UninitializedVideo(); return NULL; } return _this->name; } SDL_VideoDevice * SDL_GetVideoDevice() { return _this; } int SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode) { SDL_VideoDisplay display; SDL_zero(display); if (desktop_mode) { display.desktop_mode = *desktop_mode; } display.current_mode = display.desktop_mode; return SDL_AddVideoDisplay(&display); } int SDL_AddVideoDisplay(const SDL_VideoDisplay * display) { SDL_VideoDisplay *displays; int index = -1; displays = SDL_realloc(_this->displays, (_this->num_displays + 1) * sizeof(*displays)); if (displays) { index = _this->num_displays++; displays[index] = *display; displays[index].device = _this; _this->displays = displays; } else { SDL_OutOfMemory(); } return index; } int SDL_GetNumVideoDisplays(void) { if (!_this) { SDL_UninitializedVideo(); return 0; } return _this->num_displays; } int SDL_SelectVideoDisplay(int index) { if (!_this) { SDL_UninitializedVideo(); return (-1); } if (index < 0 || index >= _this->num_displays) { SDL_SetError("index must be in the range 0 - %d", _this->num_displays - 1); return -1; } _this->current_display = index; return 0; } int SDL_GetCurrentVideoDisplay(void) { if (!_this) { SDL_UninitializedVideo(); return (-1); } return _this->current_display; } SDL_bool SDL_AddDisplayMode(int displayIndex, const SDL_DisplayMode * mode) { SDL_VideoDisplay *display = &_this->displays[displayIndex]; SDL_DisplayMode *modes; int i, nmodes; /* Make sure we don't already have the mode in the list */ modes = display->display_modes; nmodes = display->num_display_modes; for (i = nmodes; i--;) { if (SDL_memcmp(mode, &modes[i], sizeof(*mode)) == 0) { return SDL_FALSE; } } /* Go ahead and add the new mode */ if (nmodes == display->max_display_modes) { modes = SDL_realloc(modes, (display->max_display_modes + 32) * sizeof(*modes)); if (!modes) { return SDL_FALSE; } display->display_modes = modes; display->max_display_modes += 32; } modes[nmodes] = *mode; display->num_display_modes++; /* Re-sort video modes */ SDL_qsort(display->display_modes, display->num_display_modes, sizeof(SDL_DisplayMode), cmpmodes); return SDL_TRUE; } int SDL_GetNumDisplayModes() { if (_this) { SDL_VideoDisplay *display = &SDL_CurrentDisplay; if (!display->num_display_modes && _this->GetDisplayModes) { _this->GetDisplayModes(_this); SDL_qsort(display->display_modes, display->num_display_modes, sizeof(SDL_DisplayMode), cmpmodes); } return display->num_display_modes; } return 0; } int SDL_GetDisplayMode(int index, SDL_DisplayMode * mode) { if (index < 0 || index >= SDL_GetNumDisplayModes()) { SDL_SetError("index must be in the range of 0 - %d", SDL_GetNumDisplayModes() - 1); return -1; } if (mode) { *mode = SDL_CurrentDisplay.display_modes[index]; } return 0; } int SDL_GetDesktopDisplayMode(SDL_DisplayMode * mode) { if (!_this) { SDL_UninitializedVideo(); return -1; } if (mode) { *mode = SDL_CurrentDisplay.desktop_mode; } return 0; } int SDL_GetCurrentDisplayMode(SDL_DisplayMode * mode) { if (!_this) { SDL_UninitializedVideo(); return -1; } if (mode) { *mode = SDL_CurrentDisplay.current_mode; } return 0; } SDL_DisplayMode * SDL_GetClosestDisplayMode(const SDL_DisplayMode * mode, SDL_DisplayMode * closest) { Uint32 target_format; int target_refresh_rate; int i; SDL_DisplayMode *current, *match; if (!_this || !mode || !closest) { return NULL; } /* Default to the desktop format */ if (mode->format) { target_format = mode->format; } else { target_format = SDL_CurrentDisplay.desktop_mode.format; } /* Default to the desktop refresh rate */ if (mode->refresh_rate) { target_refresh_rate = mode->refresh_rate; } else { target_refresh_rate = SDL_CurrentDisplay.desktop_mode.refresh_rate; } match = NULL; for (i = 0; i < SDL_GetNumDisplayModes(); ++i) { current = &SDL_CurrentDisplay.display_modes[i]; if (current->w && (current->w < mode->w)) { /* Out of sorted modes large enough here */ break; } if (current->h && (current->h < mode->h)) { if (current->w && (current->w == mode->w)) { /* Out of sorted modes large enough here */ break; } /* Wider, but not tall enough, due to a different aspect ratio. This mode must be skipped, but closer modes may still follow. */ continue; } if (!match || current->w < match->w || current->h < match->h) { match = current; continue; } if (current->format != match->format) { /* Sorted highest depth to lowest */ if (current->format == target_format || (SDL_BITSPERPIXEL(current->format) >= SDL_BITSPERPIXEL(target_format) && SDL_PIXELTYPE(current->format) == SDL_PIXELTYPE(target_format))) { match = current; } continue; } if (current->refresh_rate != match->refresh_rate) { /* Sorted highest refresh to lowest */ if (current->refresh_rate >= target_refresh_rate) { match = current; } } } if (match) { if (match->format) { closest->format = match->format; } else { closest->format = mode->format; } if (match->w && match->h) { closest->w = match->w; closest->h = match->h; } else { closest->w = mode->w; closest->h = mode->h; } if (match->refresh_rate) { closest->refresh_rate = match->refresh_rate; } else { closest->refresh_rate = mode->refresh_rate; } closest->driverdata = match->driverdata; /* * Pick some reasonable defaults if the app and driver don't * care */ if (!closest->format) { closest->format = SDL_PIXELFORMAT_RGB888; } if (!closest->w) { closest->w = 640; } if (!closest->h) { closest->h = 480; } return closest; } return NULL; } int SDL_SetDisplayMode(const SDL_DisplayMode * mode) { SDL_VideoDisplay *display; SDL_DisplayMode display_mode; SDL_DisplayMode current_mode; int i, ncolors; if (!_this) { SDL_UninitializedVideo(); return -1; } display = &SDL_CurrentDisplay; if (!mode) { mode = &display->desktop_mode; } display_mode = *mode; /* Default to the current mode */ if (!display_mode.format) { display_mode.format = display->current_mode.format; } if (!display_mode.w) { display_mode.w = display->current_mode.w; } if (!display_mode.h) { display_mode.h = display->current_mode.h; } if (!display_mode.refresh_rate) { display_mode.refresh_rate = display->current_mode.refresh_rate; } /* Get a good video mode, the closest one possible */ if (!SDL_GetClosestDisplayMode(&display_mode, &display_mode)) { SDL_SetError("No video mode large enough for %dx%d", display_mode.w, display_mode.h); return -1; } /* See if there's anything left to do */ SDL_GetCurrentDisplayMode(¤t_mode); if (SDL_memcmp(&display_mode, ¤t_mode, sizeof(display_mode)) == 0) { return 0; } /* Actually change the display mode */ if (_this->SetDisplayMode(_this, &display_mode) < 0) { return -1; } display->current_mode = display_mode; /* Set up a palette, if necessary */ if (SDL_ISPIXELFORMAT_INDEXED(display_mode.format)) { ncolors = (1 << SDL_BITSPERPIXEL(display_mode.format)); } else { ncolors = 0; } if ((!ncolors && display->palette) || (ncolors && !display->palette) || (ncolors && ncolors != display->palette->ncolors)) { if (display->palette) { SDL_FreePalette(display->palette); display->palette = NULL; } if (ncolors) { display->palette = SDL_AllocPalette(ncolors); if (!display->palette) { return -1; } SDL_DitherColors(display->palette->colors, SDL_BITSPERPIXEL(display_mode.format)); } } /* Move any fullscreen windows into position */ for (i = 0; i < display->num_windows; ++i) { SDL_Window *window = &display->windows[i]; if (FULLSCREEN_VISIBLE(window)) { SDL_SetWindowPosition(window->id, window->x, window->y); } } return 0; } int SDL_SetFullscreenDisplayMode(const SDL_DisplayMode * mode) { SDL_VideoDisplay *display; SDL_DisplayMode fullscreen_mode; int i; if (!_this) { SDL_UninitializedVideo(); return -1; } display = &SDL_CurrentDisplay; if (!mode) { mode = &display->desktop_mode; } if (!SDL_GetClosestDisplayMode(mode, &fullscreen_mode)) { SDL_SetError("Couldn't find display mode match"); return -1; } if (SDL_memcmp (&fullscreen_mode, &display->fullscreen_mode, sizeof(fullscreen_mode)) == 0) { /* Nothing to do... */ return 0; } display->fullscreen_mode = fullscreen_mode; /* Actually set the mode if we have a fullscreen window visible */ for (i = 0; i < display->num_windows; ++i) { SDL_Window *window = &display->windows[i]; if (FULLSCREEN_VISIBLE(window)) { if (SDL_SetDisplayMode(&display->fullscreen_mode) < 0) { return -1; } } if (window->flags & SDL_WINDOW_FULLSCREEN) { SDL_OnWindowResized(window); } } return 0; } int SDL_GetFullscreenDisplayMode(SDL_DisplayMode * mode) { if (!_this) { SDL_UninitializedVideo(); return -1; } if (mode) { *mode = SDL_CurrentDisplay.fullscreen_mode; } return 0; } int SDL_SetDisplayPalette(const SDL_Color * colors, int firstcolor, int ncolors) { SDL_Palette *palette; int status = 0; if (!_this) { SDL_UninitializedVideo(); return -1; } palette = SDL_CurrentDisplay.palette; if (!palette) { SDL_SetError("Display mode does not have a palette"); return -1; } status = SDL_SetPaletteColors(palette, colors, firstcolor, ncolors); if (_this->SetDisplayPalette) { if (_this->SetDisplayPalette(_this, palette) < 0) { status = -1; } } return status; } int SDL_GetDisplayPalette(SDL_Color * colors, int firstcolor, int ncolors) { SDL_Palette *palette; if (!_this) { SDL_UninitializedVideo(); return -1; } palette = SDL_CurrentDisplay.palette; if (!palette->ncolors) { SDL_SetError("Display mode does not have a palette"); return -1; } if (firstcolor < 0 || (firstcolor + ncolors) > palette->ncolors) { SDL_SetError("Palette indices are out of range"); return -1; } SDL_memcpy(colors, &palette->colors[firstcolor], ncolors * sizeof(*colors)); return 0; } SDL_WindowID SDL_CreateWindow(const char *title, int x, int y, int w, int h, Uint32 flags) { const Uint32 allowed_flags = (SDL_WINDOW_FULLSCREEN | SDL_WINDOW_OPENGL | SDL_WINDOW_BORDERLESS | SDL_WINDOW_RESIZABLE | SDL_WINDOW_INPUT_GRABBED); SDL_VideoDisplay *display; SDL_Window window; int num_windows; SDL_Window *windows; if (!_this) { /* Initialize the video system if needed */ if (SDL_VideoInit(NULL, 0) < 0) { return 0; } } if (flags & SDL_WINDOW_OPENGL) { if (!_this->GL_CreateContext) { SDL_SetError("No OpenGL support in video driver"); return 0; } SDL_GL_LoadLibrary(NULL); } SDL_zero(window); window.id = _this->next_object_id++; window.x = x; window.y = y; window.w = w; window.h = h; window.flags = (flags & allowed_flags); window.display = _this->current_display; if (_this->CreateWindow && _this->CreateWindow(_this, &window) < 0) { if (flags & SDL_WINDOW_OPENGL) { SDL_GL_UnloadLibrary(); } return 0; } display = &SDL_CurrentDisplay; num_windows = display->num_windows; windows = SDL_realloc(display->windows, (num_windows + 1) * sizeof(*windows)); if (!windows) { if (_this->DestroyWindow) { _this->DestroyWindow(_this, &window); } if (flags & SDL_WINDOW_OPENGL) { SDL_GL_UnloadLibrary(); } return 0; } windows[num_windows] = window; display->windows = windows; display->num_windows++; if (title) { SDL_SetWindowTitle(window.id, title); } if (flags & SDL_WINDOW_MAXIMIZED) { SDL_MaximizeWindow(window.id); } if (flags & SDL_WINDOW_MINIMIZED) { SDL_MinimizeWindow(window.id); } if (flags & SDL_WINDOW_SHOWN) { SDL_ShowWindow(window.id); } SDL_UpdateWindowGrab(&window); return window.id; } SDL_WindowID SDL_CreateWindowFrom(const void *data) { SDL_VideoDisplay *display; SDL_Window window; int num_windows; SDL_Window *windows; if (!_this) { SDL_UninitializedVideo(); return (0); } SDL_zero(window); window.id = _this->next_object_id++; window.display = _this->current_display; window.flags = SDL_WINDOW_FOREIGN; if (!_this->CreateWindowFrom || _this->CreateWindowFrom(_this, &window, data) < 0) { return 0; } display = &SDL_CurrentDisplay; num_windows = display->num_windows; windows = SDL_realloc(display->windows, (num_windows + 1) * sizeof(*windows)); if (!windows) { if (_this->DestroyWindow) { _this->DestroyWindow(_this, &window); } if (window.title) { SDL_free(window.title); } return 0; } windows[num_windows] = window; display->windows = windows; display->num_windows++; return window.id; } int SDL_RecreateWindow(SDL_Window * window, Uint32 flags) { const Uint32 allowed_flags = (SDL_WINDOW_FULLSCREEN | SDL_WINDOW_OPENGL | SDL_WINDOW_BORDERLESS | SDL_WINDOW_RESIZABLE | SDL_WINDOW_INPUT_GRABBED); char *title = window->title; if ((flags & SDL_WINDOW_OPENGL) && !_this->GL_CreateContext) { SDL_SetError("No OpenGL support in video driver"); return -1; } if ((window->flags & SDL_WINDOW_OPENGL) != (flags & SDL_WINDOW_OPENGL)) { if (flags & SDL_WINDOW_OPENGL) { SDL_GL_LoadLibrary(NULL); } else { SDL_GL_UnloadLibrary(); } } if (window->flags & SDL_WINDOW_FOREIGN) { /* Can't destroy and re-create foreign windows, hrm */ flags |= SDL_WINDOW_FOREIGN; } else { flags &= ~SDL_WINDOW_FOREIGN; } if (_this->DestroyWindow && !(flags & SDL_WINDOW_FOREIGN)) { _this->DestroyWindow(_this, window); } window->title = NULL; window->flags = (flags & allowed_flags); if (_this->CreateWindow && !(flags & SDL_WINDOW_FOREIGN)) { if (_this->CreateWindow(_this, window) < 0) { if (flags & SDL_WINDOW_OPENGL) { SDL_GL_UnloadLibrary(); } return -1; } } if (title) { SDL_SetWindowTitle(window->id, title); SDL_free(title); } if (flags & SDL_WINDOW_MAXIMIZED) { SDL_MaximizeWindow(window->id); } if (flags & SDL_WINDOW_MINIMIZED) { SDL_MinimizeWindow(window->id); } if (flags & SDL_WINDOW_SHOWN) { SDL_ShowWindow(window->id); } SDL_UpdateWindowGrab(window); return 0; } SDL_Window * SDL_GetWindowFromID(SDL_WindowID windowID) { int i, j; if (!_this) { SDL_UninitializedVideo(); return NULL; } if (windowID) { for (i = 0; i < _this->num_displays; ++i) { SDL_VideoDisplay *display = &_this->displays[i]; for (j = 0; j < display->num_windows; ++j) { SDL_Window *window = &display->windows[j]; if (window->id == windowID) { return window; } } } } else { /* Just return the first active window */ for (i = 0; i < _this->num_displays; ++i) { SDL_VideoDisplay *display = &_this->displays[i]; for (j = 0; j < display->num_windows; ++j) { SDL_Window *window = &display->windows[j]; return window; } } } /* Couldn't find the window with the requested ID */ SDL_SetError("Invalid window ID"); return NULL; } SDL_VideoDisplay * SDL_GetDisplayFromWindow(SDL_Window * window) { if (!_this) { SDL_UninitializedVideo(); return NULL; } if (!window) { return NULL; } return &_this->displays[window->display]; } static __inline__ SDL_Renderer * SDL_GetCurrentRenderer() { if (!_this) { SDL_UninitializedVideo(); return NULL; } if (!SDL_CurrentRenderer) { if (SDL_CreateRenderer(0, -1, 0) < 0) { return NULL; } } return SDL_CurrentRenderer; } Uint32 SDL_GetWindowFlags(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window) { return 0; } return window->flags; } void SDL_SetWindowTitle(SDL_WindowID windowID, const char *title) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window || title == window->title) { return; } if (window->title) { SDL_free(window->title); } if (title) { window->title = SDL_strdup(title); } else { window->title = NULL; } if (_this->SetWindowTitle) { _this->SetWindowTitle(_this, window); } } const char * SDL_GetWindowTitle(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window) { return NULL; } return window->title; } void SDL_SetWindowIcon(SDL_WindowID windowID, SDL_Surface * icon) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window) { return; } if (_this->SetWindowIcon) { _this->SetWindowIcon(_this, window, icon); } } void SDL_SetWindowData(SDL_WindowID windowID, void *userdata) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window) { return; } window->userdata = userdata; } void * SDL_GetWindowData(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window) { return NULL; } return window->userdata; } void SDL_SetWindowPosition(SDL_WindowID windowID, int x, int y) { SDL_Window *window = SDL_GetWindowFromID(windowID); SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window); if (!window) { return; } if (x != SDL_WINDOWPOS_UNDEFINED) { window->x = x; } if (y != SDL_WINDOWPOS_UNDEFINED) { window->y = y; } if (_this->SetWindowPosition) { _this->SetWindowPosition(_this, window); } SDL_SendWindowEvent(window->id, SDL_WINDOWEVENT_MOVED, x, y); } void SDL_GetWindowPosition(SDL_WindowID windowID, int *x, int *y) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window) { return; } if (x) { *x = window->x; } if (y) { *y = window->y; } } void SDL_SetWindowSize(SDL_WindowID windowID, int w, int h) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window) { return; } window->w = w; window->h = h; if (_this->SetWindowSize) { _this->SetWindowSize(_this, window); } SDL_OnWindowResized(window); } void SDL_GetWindowSize(SDL_WindowID windowID, int *w, int *h) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (window) { if (w) { *w = window->w; } if (h) { *h = window->h; } } else { if (w) { *w = 0; } if (h) { *h = 0; } } } void SDL_ShowWindow(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window || (window->flags & SDL_WINDOW_SHOWN)) { return; } if (_this->ShowWindow) { _this->ShowWindow(_this, window); } SDL_SendWindowEvent(window->id, SDL_WINDOWEVENT_SHOWN, 0, 0); } void SDL_HideWindow(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window || !(window->flags & SDL_WINDOW_SHOWN)) { return; } if (_this->HideWindow) { _this->HideWindow(_this, window); } SDL_SendWindowEvent(window->id, SDL_WINDOWEVENT_HIDDEN, 0, 0); } void SDL_RaiseWindow(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window || !(window->flags & SDL_WINDOW_SHOWN)) { return; } if (_this->RaiseWindow) { _this->RaiseWindow(_this, window); } } void SDL_MaximizeWindow(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window || (window->flags & SDL_WINDOW_MAXIMIZED)) { return; } if (_this->MaximizeWindow) { _this->MaximizeWindow(_this, window); } SDL_SendWindowEvent(window->id, SDL_WINDOWEVENT_MAXIMIZED, 0, 0); } void SDL_MinimizeWindow(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window || (window->flags & SDL_WINDOW_MINIMIZED)) { return; } if (_this->MinimizeWindow) { _this->MinimizeWindow(_this, window); } SDL_SendWindowEvent(window->id, SDL_WINDOWEVENT_MINIMIZED, 0, 0); } void SDL_RestoreWindow(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window || !(window->flags & (SDL_WINDOW_MAXIMIZED | SDL_WINDOW_MINIMIZED))) { return; } if (_this->RestoreWindow) { _this->RestoreWindow(_this, window); } SDL_SendWindowEvent(window->id, SDL_WINDOWEVENT_RESTORED, 0, 0); } int SDL_SetWindowFullscreen(SDL_WindowID windowID, int fullscreen) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window) { return -1; } if (fullscreen) { fullscreen = SDL_WINDOW_FULLSCREEN; } if ((window->flags & SDL_WINDOW_FULLSCREEN) == fullscreen) { return 0; } if (fullscreen) { window->flags |= SDL_WINDOW_FULLSCREEN; if (FULLSCREEN_VISIBLE(window)) { SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window); /* Hide any other fullscreen windows */ int i; for (i = 0; i < display->num_windows; ++i) { SDL_Window *other = &display->windows[i]; if (other->id != windowID && FULLSCREEN_VISIBLE(other)) { SDL_MinimizeWindow(other->id); } } SDL_SetDisplayMode(&display->fullscreen_mode); } } else { window->flags &= ~SDL_WINDOW_FULLSCREEN; if (FULLSCREEN_VISIBLE(window)) { SDL_SetDisplayMode(NULL); } } return 0; } void SDL_SetWindowGrab(SDL_WindowID windowID, int mode) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window || (!!mode == !!(window->flags & SDL_WINDOW_INPUT_GRABBED))) { return; } if (mode) { window->flags |= SDL_WINDOW_INPUT_GRABBED; } else { window->flags &= ~SDL_WINDOW_INPUT_GRABBED; } SDL_UpdateWindowGrab(window); } static void SDL_UpdateWindowGrab(SDL_Window * window) { if ((window->flags & SDL_WINDOW_INPUT_FOCUS) && _this->SetWindowGrab) { _this->SetWindowGrab(_this, window); } } int SDL_GetWindowGrab(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window) { return 0; } return ((window->flags & SDL_WINDOW_INPUT_GRABBED) != 0); } void SDL_OnWindowShown(SDL_Window * window) { if (window->flags & SDL_WINDOW_FULLSCREEN) { SDL_SendWindowEvent(window->id, SDL_WINDOWEVENT_FOCUS_GAINED, 0, 0); } } void SDL_OnWindowHidden(SDL_Window * window) { if (window->flags & SDL_WINDOW_FULLSCREEN) { SDL_SendWindowEvent(window->id, SDL_WINDOWEVENT_FOCUS_LOST, 0, 0); } } void SDL_OnWindowResized(SDL_Window * window) { SDL_Renderer *renderer = window->renderer; if (renderer && renderer->DisplayModeChanged) { renderer->DisplayModeChanged(renderer); } } void SDL_OnWindowFocusGained(SDL_Window * window) { SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window); if (window->flags & SDL_WINDOW_FULLSCREEN) { SDL_SetDisplayMode(&display->fullscreen_mode); } if (display->gamma && _this->SetDisplayGammaRamp) { _this->SetDisplayGammaRamp(_this, display->gamma); } if ((window->flags & (SDL_WINDOW_INPUT_GRABBED | SDL_WINDOW_FULLSCREEN)) && _this->SetWindowGrab) { _this->SetWindowGrab(_this, window); } } void SDL_OnWindowFocusLost(SDL_Window * window) { SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window); if (window->flags & SDL_WINDOW_FULLSCREEN) { SDL_MinimizeWindow(window->id); SDL_SetDisplayMode(NULL); } if (display->gamma && _this->SetDisplayGammaRamp) { _this->SetDisplayGammaRamp(_this, display->saved_gamma); } if ((window->flags & (SDL_WINDOW_INPUT_GRABBED | SDL_WINDOW_FULLSCREEN)) && _this->SetWindowGrab) { _this->SetWindowGrab(_this, window); } } SDL_WindowID SDL_GetFocusWindow(void) { SDL_VideoDisplay *display; int i; if (!_this) { return 0; } display = &SDL_CurrentDisplay; for (i = 0; i < display->num_windows; ++i) { SDL_Window *window = &display->windows[i]; if (window->flags & SDL_WINDOW_INPUT_FOCUS) { return window->id; } } return 0; } void SDL_DestroyWindow(SDL_WindowID windowID) { int i, j; if (!_this) { return; } /* Restore video mode, etc. */ SDL_SendWindowEvent(windowID, SDL_WINDOWEVENT_FOCUS_LOST, 0, 0); for (i = 0; i < _this->num_displays; ++i) { SDL_VideoDisplay *display = &_this->displays[i]; for (j = 0; j < display->num_windows; ++j) { SDL_Window *window = &display->windows[j]; if (window->id != windowID) { continue; } if (window->title) { SDL_free(window->title); window->title = NULL; } if (window->renderer) { SDL_DestroyRenderer(window->id); window->renderer = NULL; } if (_this->DestroyWindow) { _this->DestroyWindow(_this, window); } if (window->flags & SDL_WINDOW_OPENGL) { SDL_GL_UnloadLibrary(); } if (j != display->num_windows - 1) { SDL_memcpy(&display->windows[i], &display->windows[i + 1], (display->num_windows - i - 1) * sizeof(*window)); } --display->num_windows; return; } } } void SDL_AddRenderDriver(int displayIndex, const SDL_RenderDriver * driver) { SDL_VideoDisplay *display; SDL_RenderDriver *render_drivers; if (displayIndex >= _this->num_displays) { return; } display = &_this->displays[displayIndex]; render_drivers = SDL_realloc(display->render_drivers, (display->num_render_drivers + 1) * sizeof(*render_drivers)); if (render_drivers) { render_drivers[display->num_render_drivers] = *driver; display->render_drivers = render_drivers; display->num_render_drivers++; } } int SDL_GetNumRenderDrivers(void) { if (_this) { return SDL_CurrentDisplay.num_render_drivers; } return 0; } int SDL_GetRenderDriverInfo(int index, SDL_RendererInfo * info) { if (!_this) { SDL_UninitializedVideo(); return -1; } if (index < 0 || index >= SDL_GetNumRenderDrivers()) { SDL_SetError("index must be in the range of 0 - %d", SDL_GetNumRenderDrivers() - 1); return -1; } *info = SDL_CurrentDisplay.render_drivers[index].info; return 0; } int SDL_CreateRenderer(SDL_WindowID windowID, int index, Uint32 flags) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window) { SDL_SetError("Invalid window ID"); return -1; } /* Free any existing renderer */ SDL_DestroyRenderer(windowID); if (index < 0) { const char *override = SDL_getenv("SDL_VIDEO_RENDERER"); if (override) { int i, n = SDL_GetNumRenderDrivers(); for (i = 0; i < n; ++i) { SDL_RenderDriver *driver = &SDL_CurrentDisplay.render_drivers[i]; if (SDL_strcasecmp(override, driver->info.name) == 0) { index = i; break; } } } } if (index < 0) { int n = SDL_GetNumRenderDrivers(); for (index = 0; index < n; ++index) { SDL_RenderDriver *driver = &SDL_CurrentDisplay.render_drivers[index]; if ((driver->info.flags & flags) == flags) { /* Create a new renderer instance */ window->renderer = SDL_CurrentDisplay.render_drivers[index].CreateRenderer(window, flags); if (window->renderer) { /* Yay, we got one! */ break; } } } if (index == n) { SDL_SetError("Couldn't find matching render driver"); return -1; } } else { if (index >= SDL_GetNumRenderDrivers()) { SDL_SetError("index must be -1 or in the range of 0 - %d", SDL_GetNumRenderDrivers() - 1); return -1; } /* Create a new renderer instance */ window->renderer = SDL_CurrentDisplay.render_drivers[index].CreateRenderer(window, flags); } if (window->renderer == NULL) { /* Assuming renderer set its error */ return -1; } SDL_SelectRenderer(window->id); return 0; } int SDL_SelectRenderer(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); SDL_Renderer *renderer; if (!window) { SDL_SetError("Invalid window ID"); return -1; } renderer = window->renderer; if (renderer) { if (renderer->ActivateRenderer) { if (renderer->ActivateRenderer(renderer) < 0) { return -1; } } SDL_CurrentDisplay.current_renderer = renderer; } else { if (SDL_CreateRenderer(windowID, -1, 0) < 0) { return -1; } } return 0; } int SDL_GetRendererInfo(SDL_RendererInfo * info) { SDL_Renderer *renderer = SDL_GetCurrentRenderer(); if (!renderer) { return -1; } *info = renderer->info; return 0; } SDL_TextureID SDL_CreateTexture(Uint32 format, int access, int w, int h) { int hash; SDL_Renderer *renderer; SDL_Texture *texture; renderer = SDL_GetCurrentRenderer(); if (!renderer) { return 0; } if (!renderer->CreateTexture) { SDL_Unsupported(); return 0; } texture = (SDL_Texture *) SDL_calloc(1, sizeof(*texture)); if (!texture) { SDL_OutOfMemory(); return 0; } texture->id = _this->next_object_id++; texture->format = format; texture->access = access; texture->w = w; texture->h = h; texture->r = 255; texture->g = 255; texture->b = 255; texture->a = 255; texture->renderer = renderer; if (renderer->CreateTexture(renderer, texture) < 0) { if (renderer->DestroyTexture) { renderer->DestroyTexture(renderer, texture); } SDL_free(texture); return 0; } hash = (texture->id % SDL_arraysize(SDL_CurrentDisplay.textures)); texture->next = SDL_CurrentDisplay.textures[hash]; SDL_CurrentDisplay.textures[hash] = texture; return texture->id; } SDL_TextureID SDL_CreateTextureFromSurface(Uint32 format, SDL_Surface * surface) { SDL_TextureID textureID; Uint32 requested_format = format; SDL_PixelFormat *fmt; SDL_Renderer *renderer; int bpp; Uint32 Rmask, Gmask, Bmask, Amask; if (!surface) { SDL_SetError("SDL_CreateTextureFromSurface() passed NULL surface"); return 0; } fmt = surface->format; renderer = SDL_GetCurrentRenderer(); if (!renderer) { return 0; } if (format) { if (!SDL_PixelFormatEnumToMasks (format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) { SDL_SetError("Unknown pixel format"); return 0; } } else { if (surface->format->Amask || !(surface->map->info.flags & (SDL_COPY_COLORKEY | SDL_COPY_MASK | SDL_COPY_BLEND))) { Uint32 it; int pfmt; /* Pixel formats, sorted by best first */ static const Uint32 sdl_pformats[] = { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_RGB24, SDL_PIXELFORMAT_BGR24, SDL_PIXELFORMAT_RGB565, SDL_PIXELFORMAT_BGR565, SDL_PIXELFORMAT_ARGB1555, SDL_PIXELFORMAT_ABGR1555, SDL_PIXELFORMAT_RGB555, SDL_PIXELFORMAT_BGR555, SDL_PIXELFORMAT_ARGB4444, SDL_PIXELFORMAT_ABGR4444, SDL_PIXELFORMAT_RGB444, SDL_PIXELFORMAT_ARGB2101010, SDL_PIXELFORMAT_INDEX8, SDL_PIXELFORMAT_INDEX4LSB, SDL_PIXELFORMAT_INDEX4MSB, SDL_PIXELFORMAT_RGB332, SDL_PIXELFORMAT_INDEX1LSB, SDL_PIXELFORMAT_INDEX1MSB, SDL_PIXELFORMAT_UNKNOWN }; bpp = fmt->BitsPerPixel; Rmask = fmt->Rmask; Gmask = fmt->Gmask; Bmask = fmt->Bmask; Amask = fmt->Amask; format = SDL_MasksToPixelFormatEnum(bpp, Rmask, Gmask, Bmask, Amask); if (!format) { SDL_SetError("Unknown pixel format"); return 0; } /* Search requested format in the supported texture */ /* formats by current renderer */ for (it = 0; it < renderer->info.num_texture_formats; it++) { if (renderer->info.texture_formats[it] == format) { break; } } /* If requested format can't be found, search any best */ /* format which renderer provides */ if (it == renderer->info.num_texture_formats) { pfmt = 0; for (;;) { if (sdl_pformats[pfmt] == SDL_PIXELFORMAT_UNKNOWN) { break; } for (it = 0; it < renderer->info.num_texture_formats; it++) { if (renderer->info.texture_formats[it] == sdl_pformats[pfmt]) { break; } } if (it != renderer->info.num_texture_formats) { /* The best format has been found */ break; } pfmt++; } /* If any format can't be found, then return an error */ if (it == renderer->info.num_texture_formats) { SDL_SetError ("Any of the supported pixel formats can't be found"); return 0; } /* Convert found pixel format back to color masks */ if (SDL_PixelFormatEnumToMasks (renderer->info.texture_formats[it], &bpp, &Rmask, &Gmask, &Bmask, &Amask) != SDL_TRUE) { SDL_SetError("Unknown pixel format"); return 0; } } } else { /* Need a format with alpha */ Uint32 it; int apfmt; /* Pixel formats with alpha, sorted by best first */ static const Uint32 sdl_alpha_pformats[] = { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_ARGB1555, SDL_PIXELFORMAT_ABGR1555, SDL_PIXELFORMAT_ARGB4444, SDL_PIXELFORMAT_ABGR4444, SDL_PIXELFORMAT_ARGB2101010, SDL_PIXELFORMAT_UNKNOWN }; if (surface->format->Amask) { /* If surface already has alpha, then try an original */ /* surface format first */ bpp = fmt->BitsPerPixel; Rmask = fmt->Rmask; Gmask = fmt->Gmask; Bmask = fmt->Bmask; Amask = fmt->Amask; } else { bpp = 32; Rmask = 0x00FF0000; Gmask = 0x0000FF00; Bmask = 0x000000FF; Amask = 0xFF000000; } format = SDL_MasksToPixelFormatEnum(bpp, Rmask, Gmask, Bmask, Amask); if (!format) { SDL_SetError("Unknown pixel format"); return 0; } /* Search this format in the supported texture formats */ /* by current renderer */ for (it = 0; it < renderer->info.num_texture_formats; it++) { if (renderer->info.texture_formats[it] == format) { break; } } /* If this format can't be found, search any best */ /* compatible format with alpha which renderer provides */ if (it == renderer->info.num_texture_formats) { apfmt = 0; for (;;) { if (sdl_alpha_pformats[apfmt] == SDL_PIXELFORMAT_UNKNOWN) { break; } for (it = 0; it < renderer->info.num_texture_formats; it++) { if (renderer->info.texture_formats[it] == sdl_alpha_pformats[apfmt]) { break; } } if (it != renderer->info.num_texture_formats) { /* Compatible format has been found */ break; } apfmt++; } /* If compatible format can't be found, then return an error */ if (it == renderer->info.num_texture_formats) { SDL_SetError("Compatible pixel format can't be found"); return 0; } /* Convert found pixel format back to color masks */ if (SDL_PixelFormatEnumToMasks (renderer->info.texture_formats[it], &bpp, &Rmask, &Gmask, &Bmask, &Amask) != SDL_TRUE) { SDL_SetError("Unknown pixel format"); return 0; } } } format = SDL_MasksToPixelFormatEnum(bpp, Rmask, Gmask, Bmask, Amask); if (!format) { SDL_SetError("Unknown pixel format"); return 0; } } textureID = SDL_CreateTexture(format, SDL_TEXTUREACCESS_STATIC, surface->w, surface->h); if (!textureID && !requested_format) { SDL_DisplayMode desktop_mode; SDL_GetDesktopDisplayMode(&desktop_mode); format = desktop_mode.format; textureID = SDL_CreateTexture(format, SDL_TEXTUREACCESS_STATIC, surface->w, surface->h); } if (!textureID) { return 0; } if (bpp == fmt->BitsPerPixel && Rmask == fmt->Rmask && Gmask == fmt->Gmask && Bmask == fmt->Bmask && Amask == fmt->Amask) { if (SDL_MUSTLOCK(surface)) { SDL_LockSurface(surface); SDL_UpdateTexture(textureID, NULL, surface->pixels, surface->pitch); SDL_UnlockSurface(surface); } else { SDL_UpdateTexture(textureID, NULL, surface->pixels, surface->pitch); } } else { SDL_PixelFormat dst_fmt; SDL_Surface *dst = NULL; /* Set up a destination surface for the texture update */ SDL_InitFormat(&dst_fmt, bpp, Rmask, Gmask, Bmask, Amask); if (SDL_ISPIXELFORMAT_INDEXED(format)) { dst_fmt.palette = SDL_AllocPalette((1 << SDL_BITSPERPIXEL(format))); if (dst_fmt.palette) { /* * FIXME: Should we try to copy * fmt->palette? */ SDL_DitherColors(dst_fmt.palette->colors, SDL_BITSPERPIXEL(format)); } } dst = SDL_ConvertSurface(surface, &dst_fmt, 0); if (dst) { SDL_UpdateTexture(textureID, NULL, dst->pixels, dst->pitch); SDL_FreeSurface(dst); } if (dst_fmt.palette) { SDL_FreePalette(dst_fmt.palette); } if (!dst) { SDL_DestroyTexture(textureID); return 0; } } { Uint8 r, g, b, a; int blendMode; int scaleMode; SDL_GetSurfaceColorMod(surface, &r, &g, &b); SDL_SetTextureColorMod(textureID, r, g, b); SDL_GetSurfaceAlphaMod(surface, &a); SDL_SetTextureAlphaMod(textureID, a); SDL_GetSurfaceBlendMode(surface, &blendMode); SDL_SetTextureBlendMode(textureID, blendMode); SDL_GetSurfaceScaleMode(surface, &scaleMode); SDL_SetTextureScaleMode(textureID, scaleMode); } if (SDL_ISPIXELFORMAT_INDEXED(format) && fmt->palette) { SDL_SetTexturePalette(textureID, fmt->palette->colors, 0, fmt->palette->ncolors); } return textureID; } static __inline__ SDL_Texture * SDL_GetTextureFromID(SDL_TextureID textureID) { int hash; SDL_Texture *texture; if (!_this) { return NULL; } hash = (textureID % SDL_arraysize(SDL_CurrentDisplay.textures)); for (texture = SDL_CurrentDisplay.textures[hash]; texture; texture = texture->next) { if (texture->id == textureID) { return texture; } } return NULL; } int SDL_QueryTexture(SDL_TextureID textureID, Uint32 * format, int *access, int *w, int *h) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); if (!texture) { return -1; } if (format) { *format = texture->format; } if (access) { *access = texture->access; } if (w) { *w = texture->w; } if (h) { *h = texture->h; } return 0; } int SDL_QueryTexturePixels(SDL_TextureID textureID, void **pixels, int *pitch) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); SDL_Renderer *renderer; if (!texture) { return -1; } renderer = texture->renderer; if (!renderer->QueryTexturePixels) { SDL_Unsupported(); return -1; } return renderer->QueryTexturePixels(renderer, texture, pixels, pitch); } int SDL_SetTexturePalette(SDL_TextureID textureID, const SDL_Color * colors, int firstcolor, int ncolors) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); SDL_Renderer *renderer; if (!texture) { return -1; } renderer = texture->renderer; if (!renderer->SetTexturePalette) { SDL_Unsupported(); return -1; } return renderer->SetTexturePalette(renderer, texture, colors, firstcolor, ncolors); } int SDL_GetTexturePalette(SDL_TextureID textureID, SDL_Color * colors, int firstcolor, int ncolors) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); SDL_Renderer *renderer; if (!texture) { return -1; } renderer = texture->renderer; if (!renderer->GetTexturePalette) { SDL_Unsupported(); return -1; } return renderer->GetTexturePalette(renderer, texture, colors, firstcolor, ncolors); } int SDL_SetTextureColorMod(SDL_TextureID textureID, Uint8 r, Uint8 g, Uint8 b) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); SDL_Renderer *renderer; if (!texture) { return -1; } renderer = texture->renderer; if (!renderer->SetTextureColorMod) { SDL_Unsupported(); return -1; } if (r < 255 || g < 255 || b < 255) { texture->modMode |= SDL_TEXTUREMODULATE_COLOR; } else { texture->modMode &= ~SDL_TEXTUREMODULATE_COLOR; } texture->r = r; texture->g = g; texture->b = b; return renderer->SetTextureColorMod(renderer, texture); } int SDL_GetTextureColorMod(SDL_TextureID textureID, Uint8 * r, Uint8 * g, Uint8 * b) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); SDL_Renderer *renderer; if (!texture) { return -1; } renderer = texture->renderer; if (r) { *r = texture->r; } if (g) { *g = texture->g; } if (b) { *b = texture->b; } return 0; } int SDL_SetTextureAlphaMod(SDL_TextureID textureID, Uint8 alpha) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); SDL_Renderer *renderer; if (!texture) { return -1; } renderer = texture->renderer; if (!renderer->SetTextureAlphaMod) { SDL_Unsupported(); return -1; } if (alpha < 255) { texture->modMode |= SDL_TEXTUREMODULATE_ALPHA; } else { texture->modMode &= ~SDL_TEXTUREMODULATE_ALPHA; } texture->a = alpha; return renderer->SetTextureAlphaMod(renderer, texture); } int SDL_GetTextureAlphaMod(SDL_TextureID textureID, Uint8 * alpha) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); if (!texture) { return -1; } if (alpha) { *alpha = texture->a; } return 0; } int SDL_SetTextureBlendMode(SDL_TextureID textureID, int blendMode) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); SDL_Renderer *renderer; if (!texture) { return -1; } renderer = texture->renderer; if (!renderer->SetTextureBlendMode) { SDL_Unsupported(); return -1; } texture->blendMode = blendMode; return renderer->SetTextureBlendMode(renderer, texture); } int SDL_GetTextureBlendMode(SDL_TextureID textureID, int *blendMode) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); if (!texture) { return -1; } if (blendMode) { *blendMode = texture->blendMode; } return 0; } int SDL_SetTextureScaleMode(SDL_TextureID textureID, int scaleMode) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); SDL_Renderer *renderer; if (!texture) { return -1; } renderer = texture->renderer; if (!renderer->SetTextureScaleMode) { SDL_Unsupported(); return -1; } texture->scaleMode = scaleMode; return renderer->SetTextureScaleMode(renderer, texture); } int SDL_GetTextureScaleMode(SDL_TextureID textureID, int *scaleMode) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); if (!texture) { return -1; } if (scaleMode) { *scaleMode = texture->scaleMode; } return 0; } int SDL_UpdateTexture(SDL_TextureID textureID, const SDL_Rect * rect, const void *pixels, int pitch) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); SDL_Renderer *renderer; SDL_Rect full_rect; if (!texture) { return -1; } renderer = texture->renderer; if (!renderer->UpdateTexture) { SDL_Unsupported(); return -1; } if (!rect) { full_rect.x = 0; full_rect.y = 0; full_rect.w = texture->w; full_rect.h = texture->h; rect = &full_rect; } return renderer->UpdateTexture(renderer, texture, rect, pixels, pitch); } int SDL_LockTexture(SDL_TextureID textureID, const SDL_Rect * rect, int markDirty, void **pixels, int *pitch) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); SDL_Renderer *renderer; SDL_Rect full_rect; if (!texture) { return -1; } if (texture->access != SDL_TEXTUREACCESS_STREAMING) { SDL_SetError("SDL_LockTexture(): texture must be streaming"); return -1; } renderer = texture->renderer; if (!renderer->LockTexture) { SDL_Unsupported(); return -1; } if (!rect) { full_rect.x = 0; full_rect.y = 0; full_rect.w = texture->w; full_rect.h = texture->h; rect = &full_rect; } return renderer->LockTexture(renderer, texture, rect, markDirty, pixels, pitch); } void SDL_UnlockTexture(SDL_TextureID textureID) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); SDL_Renderer *renderer; if (!texture) { return; } if (texture->access != SDL_TEXTUREACCESS_STREAMING) { return; } renderer = texture->renderer; if (!renderer->UnlockTexture) { return; } renderer->UnlockTexture(renderer, texture); } void SDL_DirtyTexture(SDL_TextureID textureID, int numrects, const SDL_Rect * rects) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); SDL_Renderer *renderer; if (!texture) { return; } if (texture->access != SDL_TEXTUREACCESS_STREAMING) { return; } renderer = texture->renderer; if (!renderer->DirtyTexture) { return; } renderer->DirtyTexture(renderer, texture, numrects, rects); } int SDL_SetRenderDrawColor(Uint8 r, Uint8 g, Uint8 b, Uint8 a) { SDL_Renderer *renderer; renderer = SDL_GetCurrentRenderer(); if (!renderer) { return -1; } renderer->r = r; renderer->g = g; renderer->b = b; renderer->a = a; if (renderer->SetDrawColor) { return renderer->SetDrawColor(renderer); } else { return 0; } } int SDL_GetRenderDrawColor(Uint8 * r, Uint8 * g, Uint8 * b, Uint8 * a) { SDL_Renderer *renderer; renderer = SDL_GetCurrentRenderer(); if (!renderer) { return -1; } if (r) { *r = renderer->r; } if (g) { *g = renderer->g; } if (b) { *b = renderer->b; } if (a) { *a = renderer->a; } return 0; } int SDL_SetRenderDrawBlendMode(int blendMode) { SDL_Renderer *renderer; renderer = SDL_GetCurrentRenderer(); if (!renderer) { return -1; } renderer->blendMode = blendMode; if (renderer->SetDrawBlendMode) { return renderer->SetDrawBlendMode(renderer); } else { return 0; } } int SDL_GetRenderDrawBlendMode(int *blendMode) { SDL_Renderer *renderer; renderer = SDL_GetCurrentRenderer(); if (!renderer) { return -1; } *blendMode = renderer->blendMode; return 0; } int SDL_RenderPoint(int x, int y) { SDL_Renderer *renderer; SDL_Window *window; renderer = SDL_GetCurrentRenderer(); if (!renderer) { return -1; } if (!renderer->RenderPoint) { SDL_Unsupported(); return -1; } window = SDL_GetWindowFromID(renderer->window); if (x < 0 || y < 0 || x >= window->w || y >= window->h) { return 0; } return renderer->RenderPoint(renderer, x, y); } int SDL_RenderLine(int x1, int y1, int x2, int y2) { SDL_Renderer *renderer; SDL_Window *window; SDL_Rect real_rect; if (x1 == x2 && y1 == y2) { return SDL_RenderPoint(x1, y1); } renderer = SDL_GetCurrentRenderer(); if (!renderer) { return -1; } if (!renderer->RenderLine) { SDL_Unsupported(); return -1; } window = SDL_GetWindowFromID(renderer->window); real_rect.x = 0; real_rect.y = 0; real_rect.w = window->w; real_rect.h = window->h; if (!SDL_IntersectRectAndLine(&real_rect, &x1, &y1, &x2, &y2)) { return (0); } return renderer->RenderLine(renderer, x1, y1, x2, y2); } int SDL_RenderFill(const SDL_Rect * rect) { SDL_Renderer *renderer; SDL_Window *window; SDL_Rect real_rect; renderer = SDL_GetCurrentRenderer(); if (!renderer) { return -1; } if (!renderer->RenderFill) { SDL_Unsupported(); return -1; } window = SDL_GetWindowFromID(renderer->window); real_rect.x = 0; real_rect.y = 0; real_rect.w = window->w; real_rect.h = window->h; if (rect) { if (!SDL_IntersectRect(rect, &real_rect, &real_rect)) { return 0; } } return renderer->RenderFill(renderer, &real_rect); } int SDL_RenderCopy(SDL_TextureID textureID, const SDL_Rect * srcrect, const SDL_Rect * dstrect) { SDL_Texture *texture = SDL_GetTextureFromID(textureID); SDL_Renderer *renderer; SDL_Window *window; SDL_Rect real_srcrect; SDL_Rect real_dstrect; renderer = SDL_GetCurrentRenderer(); if (!renderer) { return -1; } if (!texture) { SDL_SetError("Texture not found"); return -1; } if (texture->renderer != renderer) { SDL_SetError("Texture was not created with this renderer"); return -1; } if (!renderer->RenderCopy) { SDL_Unsupported(); return -1; } window = SDL_GetWindowFromID(renderer->window); real_srcrect.x = 0; real_srcrect.y = 0; real_srcrect.w = texture->w; real_srcrect.h = texture->h; if (srcrect) { if (!SDL_IntersectRect(srcrect, &real_srcrect, &real_srcrect)) { return 0; } } real_dstrect.x = 0; real_dstrect.y = 0; real_dstrect.w = window->w; real_dstrect.h = window->h; if (dstrect) { if (!SDL_IntersectRect(dstrect, &real_dstrect, &real_dstrect)) { return 0; } /* Clip srcrect by the same amount as dstrect was clipped */ if (dstrect->w != real_dstrect.w) { int deltax = (real_dstrect.x - dstrect->x); int deltaw = (real_dstrect.w - dstrect->w); real_srcrect.x += (deltax * real_srcrect.w) / dstrect->w; real_srcrect.w += (deltaw * real_srcrect.w) / dstrect->w; } if (dstrect->h != real_dstrect.h) { int deltay = (real_dstrect.y - dstrect->y); int deltah = (real_dstrect.h - dstrect->h); real_srcrect.y += (deltay * real_srcrect.h) / dstrect->h; real_srcrect.h += (deltah * real_srcrect.h) / dstrect->h; } } return renderer->RenderCopy(renderer, texture, &real_srcrect, &real_dstrect); } int SDL_RenderReadPixels(const SDL_Rect * rect, Uint32 format, void * pixels, int pitch) { SDL_Renderer *renderer; SDL_Window *window; SDL_Rect real_rect; renderer = SDL_GetCurrentRenderer(); if (!renderer) { return -1; } if (!renderer->RenderReadPixels) { SDL_Unsupported(); return -1; } window = SDL_GetWindowFromID(renderer->window); if (!format) { format = SDL_GetDisplayFromWindow(window)->current_mode.format; } real_rect.x = 0; real_rect.y = 0; real_rect.w = window->w; real_rect.h = window->h; if (rect) { if (!SDL_IntersectRect(rect, &real_rect, &real_rect)) { return 0; } if (real_rect.y > rect->y) { pixels = (Uint8 *)pixels + pitch * (real_rect.y - rect->y); } if (real_rect.x > rect->x) { Uint32 format = SDL_CurrentDisplay.current_mode.format; int bpp = SDL_BYTESPERPIXEL(format); pixels = (Uint8 *)pixels + bpp * (real_rect.x - rect->x); } } return renderer->RenderReadPixels(renderer, &real_rect, format, pixels, pitch); } int SDL_RenderWritePixels(const SDL_Rect * rect, Uint32 format, const void * pixels, int pitch) { SDL_Renderer *renderer; SDL_Window *window; SDL_Rect real_rect; renderer = SDL_GetCurrentRenderer(); if (!renderer) { return -1; } if (!renderer->RenderWritePixels) { SDL_Unsupported(); return -1; } window = SDL_GetWindowFromID(renderer->window); if (!format) { format = SDL_GetDisplayFromWindow(window)->current_mode.format; } real_rect.x = 0; real_rect.y = 0; real_rect.w = window->w; real_rect.h = window->h; if (rect) { if (!SDL_IntersectRect(rect, &real_rect, &real_rect)) { return 0; } if (real_rect.y > rect->y) { pixels = (const Uint8 *)pixels + pitch * (real_rect.y - rect->y); } if (real_rect.x > rect->x) { Uint32 format = SDL_CurrentDisplay.current_mode.format; int bpp = SDL_BYTESPERPIXEL(format); pixels = (const Uint8 *)pixels + bpp * (real_rect.x - rect->x); } } return renderer->RenderWritePixels(renderer, &real_rect, format, pixels, pitch); } void SDL_RenderPresent(void) { SDL_Renderer *renderer; renderer = SDL_GetCurrentRenderer(); if (!renderer || !renderer->RenderPresent) { return; } renderer->RenderPresent(renderer); } void SDL_DestroyTexture(SDL_TextureID textureID) { int hash; SDL_Texture *prev, *texture; SDL_Renderer *renderer; if (!_this) { SDL_UninitializedVideo(); return; } /* Look up the texture in the hash table */ hash = (textureID % SDL_arraysize(SDL_CurrentDisplay.textures)); prev = NULL; for (texture = SDL_CurrentDisplay.textures[hash]; texture; prev = texture, texture = texture->next) { if (texture->id == textureID) { break; } } if (!texture) { return; } /* Unlink the texture from the list */ if (prev) { prev->next = texture->next; } else { SDL_CurrentDisplay.textures[hash] = texture->next; } /* Free the texture */ renderer = texture->renderer; renderer->DestroyTexture(renderer, texture); SDL_free(texture); } void SDL_DestroyRenderer(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); SDL_Renderer *renderer; int i; if (!window) { return; } renderer = window->renderer; if (!renderer) { return; } /* Free existing textures for this renderer */ for (i = 0; i < SDL_arraysize(SDL_CurrentDisplay.textures); ++i) { SDL_Texture *texture; SDL_Texture *prev = NULL; SDL_Texture *next; for (texture = SDL_CurrentDisplay.textures[i]; texture; texture = next) { next = texture->next; if (texture->renderer == renderer) { if (prev) { prev->next = next; } else { SDL_CurrentDisplay.textures[i] = next; } renderer->DestroyTexture(renderer, texture); SDL_free(texture); } else { prev = texture; } } } /* Free the renderer instance */ renderer->DestroyRenderer(renderer); /* Clear references */ window->renderer = NULL; if (SDL_CurrentDisplay.current_renderer == renderer) { SDL_CurrentDisplay.current_renderer = NULL; } } SDL_bool SDL_IsScreenSaverEnabled() { if (!_this) { return SDL_TRUE; } return _this->suspend_screensaver ? SDL_FALSE : SDL_TRUE; } void SDL_EnableScreenSaver() { if (!_this) { return; } if (!_this->suspend_screensaver) { return; } _this->suspend_screensaver = SDL_FALSE; if (_this->SuspendScreenSaver) { _this->SuspendScreenSaver(_this); } } void SDL_DisableScreenSaver() { if (!_this) { return; } if (_this->suspend_screensaver) { return; } _this->suspend_screensaver = SDL_TRUE; if (_this->SuspendScreenSaver) { _this->SuspendScreenSaver(_this); } } void SDL_VideoQuit(void) { int i, j; if (!_this) { return; } /* Halt event processing before doing anything else */ SDL_StopEventLoop(); SDL_EnableScreenSaver(); /* Clean up the system video */ for (i = _this->num_displays; i--;) { SDL_VideoDisplay *display = &_this->displays[i]; for (j = display->num_windows; j--;) { SDL_DestroyWindow(display->windows[i].id); } if (display->windows) { SDL_free(display->windows); display->windows = NULL; } display->num_windows = 0; if (display->render_drivers) { SDL_free(display->render_drivers); display->render_drivers = NULL; } display->num_render_drivers = 0; } _this->VideoQuit(_this); for (i = _this->num_displays; i--;) { SDL_VideoDisplay *display = &_this->displays[i]; for (j = display->num_display_modes; j--;) { if (display->display_modes[j].driverdata) { SDL_free(display->display_modes[j].driverdata); display->display_modes[j].driverdata = NULL; } } if (display->display_modes) { SDL_free(display->display_modes); display->display_modes = NULL; } if (display->desktop_mode.driverdata) { SDL_free(display->desktop_mode.driverdata); display->desktop_mode.driverdata = NULL; } if (display->palette) { SDL_FreePalette(display->palette); display->palette = NULL; } if (display->gamma) { SDL_free(display->gamma); display->gamma = NULL; } if (display->driverdata) { SDL_free(display->driverdata); display->driverdata = NULL; } } if (_this->displays) { SDL_free(_this->displays); _this->displays = NULL; } _this->free(_this); _this = NULL; } int SDL_GL_LoadLibrary(const char *path) { int retval; if (!_this) { SDL_UninitializedVideo(); return -1; } if (_this->gl_config.driver_loaded) { if (path && SDL_strcmp(path, _this->gl_config.driver_path) != 0) { SDL_SetError("OpenGL library already loaded"); return -1; } retval = 0; } else { if (!_this->GL_LoadLibrary) { SDL_SetError("No dynamic GL support in video driver"); return -1; } retval = _this->GL_LoadLibrary(_this, path); } if (retval == 0) { ++_this->gl_config.driver_loaded; } return (retval); } void * SDL_GL_GetProcAddress(const char *proc) { void *func; if (!_this) { SDL_UninitializedVideo(); return NULL; } func = NULL; if (_this->GL_GetProcAddress) { if (_this->gl_config.driver_loaded) { func = _this->GL_GetProcAddress(_this, proc); } else { SDL_SetError("No GL driver has been loaded"); } } else { SDL_SetError("No dynamic GL support in video driver"); } return func; } void SDL_GL_UnloadLibrary(void) { if (!_this) { SDL_UninitializedVideo(); return; } if (_this->gl_config.driver_loaded > 0) { if (--_this->gl_config.driver_loaded > 0) { return; } if (_this->GL_UnloadLibrary) { _this->GL_UnloadLibrary(_this); } } } SDL_bool SDL_GL_ExtensionSupported(const char *extension) { #if SDL_VIDEO_OPENGL || SDL_VIDEO_OPENGL_ES const GLubyte *(APIENTRY * glGetStringFunc) (GLenum); const char *extensions; const char *start; const char *where, *terminator; /* Extension names should not have spaces. */ where = SDL_strchr(extension, ' '); if (where || *extension == '\0') { return SDL_FALSE; } /* See if there's an environment variable override */ start = SDL_getenv(extension); if (start && *start == '0') { return SDL_FALSE; } /* Lookup the available extensions */ glGetStringFunc = SDL_GL_GetProcAddress("glGetString"); if (glGetStringFunc) { extensions = (const char *) glGetStringFunc(GL_EXTENSIONS); } else { extensions = NULL; } if (!extensions) { return SDL_FALSE; } /* * It takes a bit of care to be fool-proof about parsing the OpenGL * extensions string. Don't be fooled by sub-strings, etc. */ start = extensions; for (;;) { where = SDL_strstr(start, extension); if (!where) break; terminator = where + SDL_strlen(extension); if (where == start || *(where - 1) == ' ') if (*terminator == ' ' || *terminator == '\0') return SDL_TRUE; start = terminator; } return SDL_FALSE; #else return SDL_FALSE; #endif } int SDL_GL_SetAttribute(SDL_GLattr attr, int value) { #if SDL_VIDEO_OPENGL || SDL_VIDEO_OPENGL_ES int retval; if (!_this) { SDL_UninitializedVideo(); return -1; } retval = 0; switch (attr) { case SDL_GL_RED_SIZE: _this->gl_config.red_size = value; break; case SDL_GL_GREEN_SIZE: _this->gl_config.green_size = value; break; case SDL_GL_BLUE_SIZE: _this->gl_config.blue_size = value; break; case SDL_GL_ALPHA_SIZE: _this->gl_config.alpha_size = value; break; case SDL_GL_DOUBLEBUFFER: _this->gl_config.double_buffer = value; break; case SDL_GL_BUFFER_SIZE: _this->gl_config.buffer_size = value; break; case SDL_GL_DEPTH_SIZE: _this->gl_config.depth_size = value; break; case SDL_GL_STENCIL_SIZE: _this->gl_config.stencil_size = value; break; case SDL_GL_ACCUM_RED_SIZE: _this->gl_config.accum_red_size = value; break; case SDL_GL_ACCUM_GREEN_SIZE: _this->gl_config.accum_green_size = value; break; case SDL_GL_ACCUM_BLUE_SIZE: _this->gl_config.accum_blue_size = value; break; case SDL_GL_ACCUM_ALPHA_SIZE: _this->gl_config.accum_alpha_size = value; break; case SDL_GL_STEREO: _this->gl_config.stereo = value; break; case SDL_GL_MULTISAMPLEBUFFERS: _this->gl_config.multisamplebuffers = value; break; case SDL_GL_MULTISAMPLESAMPLES: _this->gl_config.multisamplesamples = value; break; case SDL_GL_ACCELERATED_VISUAL: _this->gl_config.accelerated = value; break; case SDL_GL_RETAINED_BACKING: _this->gl_config.retained_backing = value; break; case SDL_GL_CONTEXT_MAJOR_VERSION: _this->gl_config.major_version = value; break; case SDL_GL_CONTEXT_MINOR_VERSION: _this->gl_config.minor_version = value; break; default: SDL_SetError("Unknown OpenGL attribute"); retval = -1; break; } return retval; #else SDL_Unsupported(); return -1; #endif /* SDL_VIDEO_OPENGL */ } int SDL_GL_GetAttribute(SDL_GLattr attr, int *value) { #if SDL_VIDEO_OPENGL || SDL_VIDEO_OPENGL_ES void (APIENTRY * glGetIntegervFunc) (GLenum pname, GLint * params); GLenum(APIENTRY * glGetErrorFunc) (void); GLenum attrib = 0; GLenum error = 0; glGetIntegervFunc = SDL_GL_GetProcAddress("glGetIntegerv"); if (!glGetIntegervFunc) { return -1; } glGetErrorFunc = SDL_GL_GetProcAddress("glGetError"); if (!glGetErrorFunc) { return -1; } /* Clear value in any case */ *value = 0; switch (attr) { case SDL_GL_RETAINED_BACKING: *value = _this->gl_config.retained_backing; return 0; case SDL_GL_RED_SIZE: attrib = GL_RED_BITS; break; case SDL_GL_BLUE_SIZE: attrib = GL_BLUE_BITS; break; case SDL_GL_GREEN_SIZE: attrib = GL_GREEN_BITS; break; case SDL_GL_ALPHA_SIZE: attrib = GL_ALPHA_BITS; break; case SDL_GL_DOUBLEBUFFER: #ifndef SDL_VIDEO_OPENGL_ES attrib = GL_DOUBLEBUFFER; break; #else /* OpenGL ES 1.0 and above specifications have EGL_SINGLE_BUFFER */ /* parameter which switches double buffer to single buffer. OpenGL ES */ /* SDL driver must set proper value after initialization */ *value = _this->gl_config.double_buffer; return 0; #endif case SDL_GL_DEPTH_SIZE: attrib = GL_DEPTH_BITS; break; case SDL_GL_STENCIL_SIZE: attrib = GL_STENCIL_BITS; break; #ifndef SDL_VIDEO_OPENGL_ES case SDL_GL_ACCUM_RED_SIZE: attrib = GL_ACCUM_RED_BITS; break; case SDL_GL_ACCUM_GREEN_SIZE: attrib = GL_ACCUM_GREEN_BITS; break; case SDL_GL_ACCUM_BLUE_SIZE: attrib = GL_ACCUM_BLUE_BITS; break; case SDL_GL_ACCUM_ALPHA_SIZE: attrib = GL_ACCUM_ALPHA_BITS; break; case SDL_GL_STEREO: attrib = GL_STEREO; break; #else case SDL_GL_ACCUM_RED_SIZE: case SDL_GL_ACCUM_GREEN_SIZE: case SDL_GL_ACCUM_BLUE_SIZE: case SDL_GL_ACCUM_ALPHA_SIZE: case SDL_GL_STEREO: /* none of these are supported in OpenGL ES */ *value = 0; return 0; #endif case SDL_GL_MULTISAMPLEBUFFERS: #ifndef SDL_VIDEO_OPENGL_ES attrib = GL_SAMPLE_BUFFERS_ARB; #else attrib = GL_SAMPLE_BUFFERS; #endif break; case SDL_GL_MULTISAMPLESAMPLES: #ifndef SDL_VIDEO_OPENGL_ES attrib = GL_SAMPLES_ARB; #else attrib = GL_SAMPLES; #endif break; case SDL_GL_BUFFER_SIZE: { GLint bits = 0; GLint component; /* * there doesn't seem to be a single flag in OpenGL * for this! */ glGetIntegervFunc(GL_RED_BITS, &component); bits += component; glGetIntegervFunc(GL_GREEN_BITS, &component); bits += component; glGetIntegervFunc(GL_BLUE_BITS, &component); bits += component; glGetIntegervFunc(GL_ALPHA_BITS, &component); bits += component; *value = bits; return 0; } case SDL_GL_ACCELERATED_VISUAL: { /* FIXME: How do we get this information? */ *value = (_this->gl_config.accelerated != 0); return 0; } default: SDL_SetError("Unknown OpenGL attribute"); return -1; } glGetIntegervFunc(attrib, (GLint *) value); error = glGetErrorFunc(); if (error != GL_NO_ERROR) { switch (error) { case GL_INVALID_ENUM: { SDL_SetError("OpenGL error: GL_INVALID_ENUM"); } break; case GL_INVALID_VALUE: { SDL_SetError("OpenGL error: GL_INVALID_VALUE"); } break; default: { SDL_SetError("OpenGL error: %08X", error); } break; } return -1; } return 0; #else SDL_Unsupported(); return -1; #endif /* SDL_VIDEO_OPENGL */ } SDL_GLContext SDL_GL_CreateContext(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window) { return NULL; } if (!(window->flags & SDL_WINDOW_OPENGL)) { SDL_SetError("The specified window isn't an OpenGL window"); return NULL; } return _this->GL_CreateContext(_this, window); } int SDL_GL_MakeCurrent(SDL_WindowID windowID, SDL_GLContext context) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (window && !(window->flags & SDL_WINDOW_OPENGL)) { SDL_SetError("The specified window isn't an OpenGL window"); return -1; } if (!context) { window = NULL; } return _this->GL_MakeCurrent(_this, window, context); } int SDL_GL_SetSwapInterval(int interval) { if (!_this) { SDL_UninitializedVideo(); return -1; } if (_this->GL_SetSwapInterval) { return _this->GL_SetSwapInterval(_this, interval); } else { SDL_SetError("Setting the swap interval is not supported"); return -1; } } int SDL_GL_GetSwapInterval(void) { if (!_this) { SDL_UninitializedVideo(); return -1; } if (_this->GL_GetSwapInterval) { return _this->GL_GetSwapInterval(_this); } else { SDL_SetError("Getting the swap interval is not supported"); return -1; } } void SDL_GL_SwapWindow(SDL_WindowID windowID) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window) { return; } if (!(window->flags & SDL_WINDOW_OPENGL)) { SDL_SetError("The specified window isn't an OpenGL window"); return; } _this->GL_SwapWindow(_this, window); } void SDL_GL_DeleteContext(SDL_GLContext context) { if (!_this || !context) { return; } _this->GL_MakeCurrent(_this, NULL, NULL); _this->GL_DeleteContext(_this, context); } #if 0 // FIXME /* * Utility function used by SDL_WM_SetIcon(); flags & 1 for color key, flags * & 2 for alpha channel. */ static void CreateMaskFromColorKeyOrAlpha(SDL_Surface * icon, Uint8 * mask, int flags) { int x, y; Uint32 colorkey; #define SET_MASKBIT(icon, x, y, mask) \ mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) colorkey = icon->format->colorkey; switch (icon->format->BytesPerPixel) { case 1: { Uint8 *pixels; for (y = 0; y < icon->h; ++y) { pixels = (Uint8 *) icon->pixels + y * icon->pitch; for (x = 0; x < icon->w; ++x) { if (*pixels++ == colorkey) { SET_MASKBIT(icon, x, y, mask); } } } } break; case 2: { Uint16 *pixels; for (y = 0; y < icon->h; ++y) { pixels = (Uint16 *) icon->pixels + y * icon->pitch / 2; for (x = 0; x < icon->w; ++x) { if ((flags & 1) && *pixels == colorkey) { SET_MASKBIT(icon, x, y, mask); } else if ((flags & 2) && (*pixels & icon->format->Amask) == 0) { SET_MASKBIT(icon, x, y, mask); } pixels++; } } } break; case 4: { Uint32 *pixels; for (y = 0; y < icon->h; ++y) { pixels = (Uint32 *) icon->pixels + y * icon->pitch / 4; for (x = 0; x < icon->w; ++x) { if ((flags & 1) && *pixels == colorkey) { SET_MASKBIT(icon, x, y, mask); } else if ((flags & 2) && (*pixels & icon->format->Amask) == 0) { SET_MASKBIT(icon, x, y, mask); } pixels++; } } } break; } } /* * Sets the window manager icon for the display window. */ void SDL_WM_SetIcon(SDL_Surface * icon, Uint8 * mask) { if (icon && _this->SetIcon) { /* Generate a mask if necessary, and create the icon! */ if (mask == NULL) { int mask_len = icon->h * (icon->w + 7) / 8; int flags = 0; mask = (Uint8 *) SDL_malloc(mask_len); if (mask == NULL) { return; } SDL_memset(mask, ~0, mask_len); if (icon->flags & SDL_SRCCOLORKEY) flags |= 1; if (icon->flags & SDL_SRCALPHA) flags |= 2; if (flags) { CreateMaskFromColorKeyOrAlpha(icon, mask, flags); } _this->SetIcon(_this, icon, mask); SDL_free(mask); } else { _this->SetIcon(_this, icon, mask); } } } #endif SDL_bool SDL_GetWindowWMInfo(SDL_WindowID windowID, struct SDL_SysWMinfo *info) { SDL_Window *window = SDL_GetWindowFromID(windowID); if (!window || !_this->GetWindowWMInfo) { return SDL_FALSE; } return (_this->GetWindowWMInfo(_this, window, info)); } void SDL_StartTextInput(void) { if (_this->StartTextInput) { _this->StartTextInput(_this); } SDL_EventState(SDL_TEXTINPUT, SDL_ENABLE); SDL_EventState(SDL_TEXTEDITING, SDL_ENABLE); } void SDL_StopTextInput(void) { if (_this->StopTextInput) { _this->StopTextInput(_this); } SDL_EventState(SDL_TEXTINPUT, SDL_DISABLE); SDL_EventState(SDL_TEXTEDITING, SDL_DISABLE); } void SDL_SetTextInputRect(SDL_Rect *rect) { if (_this->SetTextInputRect) { _this->SetTextInputRect(_this, rect); } } /* vi: set ts=4 sw=4 expandtab: */