-/***********************************************************
-* Artsoft Retro-Game Library *
-*----------------------------------------------------------*
-* (c) 1994-2001 Artsoft Entertainment *
-* Holger Schemel *
-* Detmolder Strasse 189 *
-* 33604 Bielefeld *
-* Germany *
-* e-mail: info@artsoft.org *
-*----------------------------------------------------------*
-* sdl.c *
-***********************************************************/
+// ============================================================================
+// Artsoft Retro-Game Library
+// ----------------------------------------------------------------------------
+// (c) 1995-2014 by Artsoft Entertainment
+// Holger Schemel
+// info@artsoft.org
+// http://www.artsoft.org/
+// ----------------------------------------------------------------------------
+// sdl.c
+// ============================================================================
#include "system.h"
#include "sound.h"
#include "joystick.h"
#include "misc.h"
+#include "setup.h"
+#define ENABLE_UNUSED_CODE 0 /* currently unused functions */
+
+#define DEBUG_JOYSTICKS 0
-#if defined(TARGET_SDL)
/* ========================================================================= */
/* video functions */
/* ========================================================================= */
+/* SDL internal variables */
+#if defined(TARGET_SDL2)
+static SDL_Window *sdl_window = NULL;
+static SDL_Renderer *sdl_renderer = NULL;
+static SDL_Texture *sdl_texture_stream = NULL;
+static SDL_Texture *sdl_texture_target = NULL;
+static boolean fullscreen_enabled = FALSE;
+#endif
+
+static boolean limit_screen_updates = FALSE;
+
+
/* functions from SGE library */
-inline void sge_Line(SDL_Surface *, Sint16, Sint16, Sint16, Sint16, Uint32);
+void sge_Line(SDL_Surface *, Sint16, Sint16, Sint16, Sint16, Uint32);
+
+#if defined(USE_TOUCH_INPUT_OVERLAY)
+/* functions to draw overlay graphics for touch device input */
+static void DrawTouchInputOverlay();
+#endif
+
+void SDLLimitScreenUpdates(boolean enable)
+{
+ limit_screen_updates = enable;
+}
+
+static void FinalizeScreen(int draw_target)
+{
+ // copy global animations to render target buffer, if defined (below border)
+ if (gfx.draw_global_anim_function != NULL)
+ gfx.draw_global_anim_function(draw_target, DRAW_GLOBAL_ANIM_STAGE_1);
+
+ // copy global masked border to render target buffer, if defined
+ if (gfx.draw_global_border_function != NULL)
+ gfx.draw_global_border_function(draw_target);
+
+ // copy global animations to render target buffer, if defined (above border)
+ if (gfx.draw_global_anim_function != NULL)
+ gfx.draw_global_anim_function(draw_target, DRAW_GLOBAL_ANIM_STAGE_2);
+
+ // copy tile selection cursor to render target buffer, if defined (above all)
+ if (gfx.draw_tile_cursor_function != NULL)
+ gfx.draw_tile_cursor_function(draw_target);
+}
+
+static void UpdateScreenExt(SDL_Rect *rect, boolean with_frame_delay)
+{
+ static unsigned int update_screen_delay = 0;
+ unsigned int update_screen_delay_value = 50; /* (milliseconds) */
+ SDL_Surface *screen = backbuffer->surface;
+
+ if (limit_screen_updates &&
+ !DelayReached(&update_screen_delay, update_screen_delay_value))
+ return;
+
+ LimitScreenUpdates(FALSE);
+
+#if 0
+ {
+ static int LastFrameCounter = 0;
+ boolean changed = (FrameCounter != LastFrameCounter);
+
+ printf("::: FrameCounter == %d [%s]\n", FrameCounter,
+ (changed ? "-" : "SAME FRAME UPDATED"));
+
+ LastFrameCounter = FrameCounter;
+
+ /*
+ if (FrameCounter % 2)
+ return;
+ */
+ }
+#endif
+
+ if (video.screen_rendering_mode == SPECIAL_RENDERING_BITMAP &&
+ gfx.final_screen_bitmap != NULL) // may not be initialized yet
+ {
+ // draw global animations using bitmaps instead of using textures
+ // to prevent texture scaling artefacts (this is potentially slower)
+
+ BlitBitmap(backbuffer, gfx.final_screen_bitmap, 0, 0,
+ gfx.win_xsize, gfx.win_ysize, 0, 0);
+
+ FinalizeScreen(DRAW_TO_SCREEN);
+
+ screen = gfx.final_screen_bitmap->surface;
+
+ // force full window redraw
+ rect = NULL;
+ }
+
+#if defined(TARGET_SDL2)
+ SDL_Texture *sdl_texture = sdl_texture_stream;
+
+ // deactivate use of target texture if render targets are not supported
+ if ((video.screen_rendering_mode == SPECIAL_RENDERING_TARGET ||
+ video.screen_rendering_mode == SPECIAL_RENDERING_DOUBLE) &&
+ sdl_texture_target == NULL)
+ video.screen_rendering_mode = SPECIAL_RENDERING_OFF;
+
+ if (video.screen_rendering_mode == SPECIAL_RENDERING_TARGET)
+ sdl_texture = sdl_texture_target;
+
+ if (rect)
+ {
+ int bytes_x = screen->pitch / video.width;
+ int bytes_y = screen->pitch;
+
+ SDL_UpdateTexture(sdl_texture, rect,
+ screen->pixels + rect->x * bytes_x + rect->y * bytes_y,
+ screen->pitch);
+ }
+ else
+ {
+ SDL_UpdateTexture(sdl_texture, NULL, screen->pixels, screen->pitch);
+ }
+
+ int xoff = video.screen_xoffset;
+ int yoff = video.screen_yoffset;
+ SDL_Rect dst_rect_screen = { xoff, yoff, video.width, video.height };
+ SDL_Rect *src_rect1 = NULL, *dst_rect1 = NULL;
+ SDL_Rect *src_rect2 = NULL, *dst_rect2 = NULL;
+
+ if (video.screen_rendering_mode == SPECIAL_RENDERING_TARGET ||
+ video.screen_rendering_mode == SPECIAL_RENDERING_DOUBLE)
+ dst_rect2 = &dst_rect_screen;
+ else
+ dst_rect1 = &dst_rect_screen;
+
+#if defined(HAS_SCREEN_KEYBOARD)
+ if (video.shifted_up || video.shifted_up_delay)
+ {
+ int time_current = SDL_GetTicks();
+ int pos = video.shifted_up_pos;
+ int pos_last = video.shifted_up_pos_last;
+
+ if (!DelayReachedExt(&video.shifted_up_delay, video.shifted_up_delay_value,
+ time_current))
+ {
+ int delay = time_current - video.shifted_up_delay;
+ int delay_value = video.shifted_up_delay_value;
+
+ pos = pos_last + (pos - pos_last) * delay / delay_value;
+ }
+ else
+ {
+ video.shifted_up_pos_last = pos;
+ video.shifted_up_delay = 0;
+ }
+
+ SDL_Rect src_rect_up = { 0, pos, video.width, video.height - pos };
+ SDL_Rect dst_rect_up = { xoff, yoff, video.width, video.height - pos };
+
+ if (video.screen_rendering_mode == SPECIAL_RENDERING_TARGET ||
+ video.screen_rendering_mode == SPECIAL_RENDERING_DOUBLE)
+ {
+ src_rect2 = &src_rect_up;
+ dst_rect2 = &dst_rect_up;
+ }
+ else
+ {
+ src_rect1 = &src_rect_up;
+ dst_rect1 = &dst_rect_up;
+ }
+ }
+#endif
+
+ // clear render target buffer
+ SDL_RenderClear(sdl_renderer);
+
+ // set renderer to use target texture for rendering
+ if (video.screen_rendering_mode == SPECIAL_RENDERING_TARGET ||
+ video.screen_rendering_mode == SPECIAL_RENDERING_DOUBLE)
+ SDL_SetRenderTarget(sdl_renderer, sdl_texture_target);
+
+ // copy backbuffer texture to render target buffer
+ if (video.screen_rendering_mode != SPECIAL_RENDERING_TARGET)
+ SDL_RenderCopy(sdl_renderer, sdl_texture_stream, src_rect1, dst_rect1);
+
+ if (video.screen_rendering_mode != SPECIAL_RENDERING_BITMAP)
+ FinalizeScreen(DRAW_TO_SCREEN);
+
+ // when using target texture, copy it to screen buffer
+ if (video.screen_rendering_mode == SPECIAL_RENDERING_TARGET ||
+ video.screen_rendering_mode == SPECIAL_RENDERING_DOUBLE)
+ {
+ SDL_SetRenderTarget(sdl_renderer, NULL);
+ SDL_RenderCopy(sdl_renderer, sdl_texture_target, src_rect2, dst_rect2);
+ }
+
+#if defined(USE_TOUCH_INPUT_OVERLAY)
+ // draw overlay graphics for touch device input, if needed
+ DrawTouchInputOverlay();
+#endif
+
+#endif
+
+ // global synchronization point of the game to align video frame delay
+ if (with_frame_delay)
+ WaitUntilDelayReached(&video.frame_delay, video.frame_delay_value);
+
+#if defined(TARGET_SDL2)
+ // show render target buffer on screen
+ SDL_RenderPresent(sdl_renderer);
+#else // TARGET_SDL
+ if (rect)
+ SDL_UpdateRects(screen, 1, rect);
+ else
+ SDL_UpdateRect(screen, 0, 0, 0, 0);
+#endif
+}
+
+static void UpdateScreen_WithFrameDelay(SDL_Rect *rect)
+{
+ UpdateScreenExt(rect, TRUE);
+}
+
+static void UpdateScreen_WithoutFrameDelay(SDL_Rect *rect)
+{
+ UpdateScreenExt(rect, FALSE);
+}
+
+static void SDLSetWindowIcon(char *basename)
+{
+ /* (setting the window icon on Mac OS X would replace the high-quality
+ dock icon with the currently smaller (and uglier) icon from file) */
+
+#if !defined(PLATFORM_MACOSX)
+ char *filename = getCustomImageFilename(basename);
+ SDL_Surface *surface;
+
+ if (filename == NULL)
+ {
+ Error(ERR_WARN, "SDLSetWindowIcon(): cannot find file '%s'", basename);
+
+ return;
+ }
+
+ if ((surface = IMG_Load(filename)) == NULL)
+ {
+ Error(ERR_WARN, "IMG_Load() failed: %s", SDL_GetError());
+
+ return;
+ }
+
+ /* set transparent color */
+ SDL_SetColorKey(surface, SET_TRANSPARENT_PIXEL,
+ SDL_MapRGB(surface->format, 0x00, 0x00, 0x00));
+
+#if defined(TARGET_SDL2)
+ SDL_SetWindowIcon(sdl_window, surface);
+#else
+ SDL_WM_SetIcon(surface, NULL);
+#endif
+#endif
+}
+
+#if defined(TARGET_SDL2)
+
+static boolean equalSDLPixelFormat(SDL_PixelFormat *format1,
+ SDL_PixelFormat *format2)
+{
+ return (format1->format == format2->format &&
+ format1->BitsPerPixel == format2->BitsPerPixel &&
+ format1->BytesPerPixel == format2->BytesPerPixel &&
+ format1->Rmask == format2->Rmask &&
+ format1->Gmask == format2->Gmask &&
+ format1->Bmask == format2->Bmask);
+}
+
+static Pixel SDLGetColorKey(SDL_Surface *surface)
+{
+ Pixel color_key;
+
+ if (SDL_GetColorKey(surface, &color_key) != 0)
+ return -1;
+
+ return color_key;
+}
+
+static boolean SDLHasColorKey(SDL_Surface *surface)
+{
+ return (SDLGetColorKey(surface) != -1);
+}
+
+static boolean SDLHasAlpha(SDL_Surface *surface)
+{
+ SDL_BlendMode blend_mode;
+
+ if (SDL_GetSurfaceBlendMode(surface, &blend_mode) != 0)
+ return FALSE;
+
+ return (blend_mode == SDL_BLENDMODE_BLEND);
+}
+
+static void SDLSetAlpha(SDL_Surface *surface, boolean set, int alpha)
+{
+ SDL_BlendMode blend_mode = (set ? SDL_BLENDMODE_BLEND : SDL_BLENDMODE_NONE);
-#ifdef PLATFORM_WIN32
-#define FULLSCREEN_BUG
+ SDL_SetSurfaceBlendMode(surface, blend_mode);
+ SDL_SetSurfaceAlphaMod(surface, alpha);
+}
+
+SDL_Surface *SDLGetNativeSurface(SDL_Surface *surface)
+{
+ SDL_PixelFormat format;
+ SDL_Surface *new_surface;
+
+ if (surface == NULL)
+ return NULL;
+
+ if (backbuffer && backbuffer->surface)
+ {
+ format = *backbuffer->surface->format;
+ format.Amask = surface->format->Amask; // keep alpha channel
+ }
+ else
+ {
+ format = *surface->format;
+ }
+
+ new_surface = SDL_ConvertSurface(surface, &format, 0);
+
+ if (new_surface == NULL)
+ Error(ERR_EXIT, "SDL_ConvertSurface() failed: %s", SDL_GetError());
+
+ return new_surface;
+}
+
+boolean SDLSetNativeSurface(SDL_Surface **surface)
+{
+ SDL_Surface *new_surface;
+
+ if (surface == NULL ||
+ *surface == NULL ||
+ backbuffer == NULL ||
+ backbuffer->surface == NULL)
+ return FALSE;
+
+ // if pixel format already optimized for destination surface, do nothing
+ if (equalSDLPixelFormat((*surface)->format, backbuffer->surface->format))
+ return FALSE;
+
+ new_surface = SDLGetNativeSurface(*surface);
+
+ SDL_FreeSurface(*surface);
+
+ *surface = new_surface;
+
+ return TRUE;
+}
+
+#else
+
+static Pixel SDLGetColorKey(SDL_Surface *surface)
+{
+ if ((surface->flags & SDL_SRCCOLORKEY) == 0)
+ return -1;
+
+ return surface->format->colorkey;
+}
+
+static boolean SDLHasColorKey(SDL_Surface *surface)
+{
+ return (SDLGetColorKey(surface) != -1);
+}
+
+static boolean SDLHasAlpha(SDL_Surface *surface)
+{
+ return ((surface->flags & SDL_SRCALPHA) != 0);
+}
+
+static void SDLSetAlpha(SDL_Surface *surface, boolean set, int alpha)
+{
+ SDL_SetAlpha(surface, (set ? SDL_SRCALPHA : 0), alpha);
+}
+
+SDL_Surface *SDLGetNativeSurface(SDL_Surface *surface)
+{
+ SDL_Surface *new_surface;
+
+ if (surface == NULL)
+ return NULL;
+
+ if (!video.initialized)
+ new_surface = SDL_ConvertSurface(surface, surface->format, SURFACE_FLAGS);
+ else if (SDLHasAlpha(surface))
+ new_surface = SDL_DisplayFormatAlpha(surface);
+ else
+ new_surface = SDL_DisplayFormat(surface);
+
+ if (new_surface == NULL)
+ Error(ERR_EXIT, "%s() failed: %s",
+ (video.initialized ? "SDL_DisplayFormat" : "SDL_ConvertSurface"),
+ SDL_GetError());
+
+ return new_surface;
+}
+
+boolean SDLSetNativeSurface(SDL_Surface **surface)
+{
+ SDL_Surface *new_surface;
+
+ if (surface == NULL ||
+ *surface == NULL ||
+ !video.initialized)
+ return FALSE;
+
+ new_surface = SDLGetNativeSurface(*surface);
+
+ SDL_FreeSurface(*surface);
+
+ *surface = new_surface;
+
+ return TRUE;
+}
+
+#endif
+
+#if defined(TARGET_SDL2)
+static SDL_Texture *SDLCreateTextureFromSurface(SDL_Surface *surface)
+{
+ if (program.headless)
+ return NULL;
+
+ SDL_Texture *texture = SDL_CreateTextureFromSurface(sdl_renderer, surface);
+
+ if (texture == NULL)
+ Error(ERR_EXIT, "SDL_CreateTextureFromSurface() failed: %s",
+ SDL_GetError());
+
+ return texture;
+}
+#endif
+
+void SDLCreateBitmapTextures(Bitmap *bitmap)
+{
+#if defined(TARGET_SDL2)
+ if (bitmap == NULL)
+ return;
+
+ if (bitmap->texture)
+ SDL_DestroyTexture(bitmap->texture);
+ if (bitmap->texture_masked)
+ SDL_DestroyTexture(bitmap->texture_masked);
+
+ bitmap->texture = SDLCreateTextureFromSurface(bitmap->surface);
+ bitmap->texture_masked = SDLCreateTextureFromSurface(bitmap->surface_masked);
#endif
+}
+
+void SDLFreeBitmapTextures(Bitmap *bitmap)
+{
+#if defined(TARGET_SDL2)
+ if (bitmap == NULL)
+ return;
+
+ if (bitmap->texture)
+ SDL_DestroyTexture(bitmap->texture);
+ if (bitmap->texture_masked)
+ SDL_DestroyTexture(bitmap->texture_masked);
-/* stuff needed to work around SDL/Windows fullscreen drawing bug */
-static int fullscreen_width;
-static int fullscreen_height;
-static int fullscreen_xoffset;
-static int fullscreen_yoffset;
-static int video_xoffset;
-static int video_yoffset;
+ bitmap->texture = NULL;
+ bitmap->texture_masked = NULL;
+#endif
+}
-inline void SDLInitVideoDisplay(void)
+void SDLInitVideoDisplay(void)
{
+#if !defined(TARGET_SDL2)
+ if (!strEqual(setup.system.sdl_videodriver, ARG_DEFAULT))
+ SDL_putenv(getStringCat2("SDL_VIDEODRIVER=", setup.system.sdl_videodriver));
+
+ SDL_putenv("SDL_VIDEO_CENTERED=1");
+#endif
+
/* initialize SDL video */
if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0)
Error(ERR_EXIT, "SDL_InitSubSystem() failed: %s", SDL_GetError());
/* set default SDL depth */
+#if !defined(TARGET_SDL2)
video.default_depth = SDL_GetVideoInfo()->vfmt->BitsPerPixel;
+#else
+ video.default_depth = 32; // (how to determine video depth in SDL2?)
+#endif
}
-inline void SDLInitVideoBuffer(DrawBuffer **backbuffer, DrawWindow **window,
- boolean fullscreen)
+inline static void SDLInitVideoBuffer_VideoBuffer(boolean fullscreen)
{
-#ifdef FULLSCREEN_BUG
- int i;
- static int screen_xy[][2] =
+ if (program.headless)
+ return;
+
+ video.window_scaling_percent = setup.window_scaling_percent;
+ video.window_scaling_quality = setup.window_scaling_quality;
+
+ SDLSetScreenRenderingMode(setup.screen_rendering_mode);
+
+#if defined(TARGET_SDL2)
+ // SDL 2.0: support for (desktop) fullscreen mode available
+ video.fullscreen_available = TRUE;
+#else
+ // SDL 1.2: no support for fullscreen mode in R'n'D anymore
+ video.fullscreen_available = FALSE;
+#endif
+
+ /* open SDL video output device (window or fullscreen mode) */
+ if (!SDLSetVideoMode(fullscreen))
+ Error(ERR_EXIT, "setting video mode failed");
+
+ /* !!! SDL2 can only set the window icon if the window already exists !!! */
+ /* set window icon */
+ SDLSetWindowIcon(program.icon_filename);
+
+ /* set window and icon title */
+ SDLSetWindowTitle();
+}
+
+inline static void SDLInitVideoBuffer_DrawBuffer()
+{
+ /* SDL cannot directly draw to the visible video framebuffer like X11,
+ but always uses a backbuffer, which is then blitted to the visible
+ video framebuffer with 'SDL_UpdateRect' (or replaced with the current
+ visible video framebuffer with 'SDL_Flip', if the hardware supports
+ this). Therefore do not use an additional backbuffer for drawing, but
+ use a symbolic buffer (distinguishable from the SDL backbuffer) called
+ 'window', which indicates that the SDL backbuffer should be updated to
+ the visible video framebuffer when attempting to blit to it.
+
+ For convenience, it seems to be a good idea to create this symbolic
+ buffer 'window' at the same size as the SDL backbuffer. Although it
+ should never be drawn to directly, it would do no harm nevertheless. */
+
+ /* create additional (symbolic) buffer for double-buffering */
+ ReCreateBitmap(&window, video.width, video.height);
+
+ /* create dummy drawing buffer for headless mode, if needed */
+ if (program.headless)
+ ReCreateBitmap(&backbuffer, video.width, video.height);
+}
+
+void SDLInitVideoBuffer(boolean fullscreen)
+{
+ SDLInitVideoBuffer_VideoBuffer(fullscreen);
+ SDLInitVideoBuffer_DrawBuffer();
+}
+
+static boolean SDLCreateScreen(boolean fullscreen)
+{
+ SDL_Surface *new_surface = NULL;
+
+#if defined(TARGET_SDL2)
+ int surface_flags_window = SURFACE_FLAGS | SDL_WINDOW_RESIZABLE;
+ int surface_flags_fullscreen = SURFACE_FLAGS | SDL_WINDOW_FULLSCREEN_DESKTOP;
+#else
+ int surface_flags_window = SURFACE_FLAGS;
+ int surface_flags_fullscreen = SURFACE_FLAGS; // (no fullscreen in SDL 1.2)
+#endif
+
+#if defined(TARGET_SDL2)
+#if 1
+ int renderer_flags = SDL_RENDERER_ACCELERATED | SDL_RENDERER_TARGETTEXTURE;
+#else
+ /* If SDL_CreateRenderer() is called from within a VirtualBox Windows VM
+ _without_ enabling 2D/3D acceleration and/or guest additions installed,
+ it will crash if flags are *not* set to SDL_RENDERER_SOFTWARE (because
+ it will try to use accelerated graphics and apparently fails miserably) */
+ int renderer_flags = SDL_RENDERER_SOFTWARE;
+#endif
+
+ SDLSetScreenSizeAndOffsets(video.width, video.height);
+#endif
+
+ int width = video.width;
+ int height = video.height;
+ int screen_width = video.screen_width;
+ int screen_height = video.screen_height;
+ int surface_flags = (fullscreen ? surface_flags_fullscreen :
+ surface_flags_window);
+
+ // default window size is unscaled
+ video.window_width = screen_width;
+ video.window_height = screen_height;
+
+#if defined(TARGET_SDL2)
+
+ // store if initial screen mode is fullscreen mode when changing screen size
+ video.fullscreen_initial = fullscreen;
+
+ float window_scaling_factor = (float)setup.window_scaling_percent / 100;
+
+ video.window_width = window_scaling_factor * screen_width;
+ video.window_height = window_scaling_factor * screen_height;
+
+ if (sdl_texture_stream)
+ {
+ SDL_DestroyTexture(sdl_texture_stream);
+ sdl_texture_stream = NULL;
+ }
+
+ if (sdl_texture_target)
+ {
+ SDL_DestroyTexture(sdl_texture_target);
+ sdl_texture_target = NULL;
+ }
+
+ if (!(fullscreen && fullscreen_enabled))
+ {
+ if (sdl_renderer)
+ {
+ SDL_DestroyRenderer(sdl_renderer);
+ sdl_renderer = NULL;
+ }
+
+ if (sdl_window)
+ {
+ SDL_DestroyWindow(sdl_window);
+ sdl_window = NULL;
+ }
+ }
+
+ if (sdl_window == NULL)
+ sdl_window = SDL_CreateWindow(program.window_title,
+ SDL_WINDOWPOS_CENTERED,
+ SDL_WINDOWPOS_CENTERED,
+ video.window_width,
+ video.window_height,
+ surface_flags);
+
+ if (sdl_window != NULL)
+ {
+ if (sdl_renderer == NULL)
+ sdl_renderer = SDL_CreateRenderer(sdl_window, -1, renderer_flags);
+
+ if (sdl_renderer != NULL)
+ {
+ SDL_RenderSetLogicalSize(sdl_renderer, screen_width, screen_height);
+ // SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
+ SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, setup.window_scaling_quality);
+
+ sdl_texture_stream = SDL_CreateTexture(sdl_renderer,
+ SDL_PIXELFORMAT_ARGB8888,
+ SDL_TEXTUREACCESS_STREAMING,
+ width, height);
+
+ if (SDL_RenderTargetSupported(sdl_renderer))
+ sdl_texture_target = SDL_CreateTexture(sdl_renderer,
+ SDL_PIXELFORMAT_ARGB8888,
+ SDL_TEXTUREACCESS_TARGET,
+ width, height);
+
+ if (sdl_texture_stream != NULL)
+ {
+ // use SDL default values for RGB masks and no alpha channel
+ new_surface = SDL_CreateRGBSurface(0, width, height, 32, 0,0,0, 0);
+
+ if (new_surface == NULL)
+ Error(ERR_WARN, "SDL_CreateRGBSurface() failed: %s", SDL_GetError());
+ }
+ else
+ {
+ Error(ERR_WARN, "SDL_CreateTexture() failed: %s", SDL_GetError());
+ }
+ }
+ else
+ {
+ Error(ERR_WARN, "SDL_CreateRenderer() failed: %s", SDL_GetError());
+ }
+ }
+ else
+ {
+ Error(ERR_WARN, "SDL_CreateWindow() failed: %s", SDL_GetError());
+ }
+
+#else // TARGET_SDL
+
+ if (gfx.final_screen_bitmap == NULL)
+ gfx.final_screen_bitmap = CreateBitmapStruct();
+
+ gfx.final_screen_bitmap->width = width;
+ gfx.final_screen_bitmap->height = height;
+
+ gfx.final_screen_bitmap->surface =
+ SDL_SetVideoMode(width, height, video.depth, surface_flags);
+
+ if (gfx.final_screen_bitmap->surface != NULL)
+ {
+ new_surface =
+ SDL_CreateRGBSurface(surface_flags, width, height, video.depth, 0,0,0, 0);
+
+ if (new_surface == NULL)
+ Error(ERR_WARN, "SDL_CreateRGBSurface() failed: %s", SDL_GetError());
+
+#if 0
+ new_surface = gfx.final_screen_bitmap->surface;
+ gfx.final_screen_bitmap = NULL;
+#endif
+
+ }
+ else
+ {
+ Error(ERR_WARN, "SDL_SetVideoMode() failed: %s", SDL_GetError());
+ }
+#endif
+
+#if defined(TARGET_SDL2)
+ // store fullscreen state ("video.fullscreen_enabled" may not reflect this!)
+ if (new_surface != NULL)
+ fullscreen_enabled = fullscreen;
+#endif
+
+ if (backbuffer == NULL)
+ backbuffer = CreateBitmapStruct();
+
+ backbuffer->width = video.width;
+ backbuffer->height = video.height;
+
+ if (backbuffer->surface)
+ SDL_FreeSurface(backbuffer->surface);
+
+ backbuffer->surface = new_surface;
+
+ return (new_surface != NULL);
+}
+
+boolean SDLSetVideoMode(boolean fullscreen)
+{
+ boolean success = FALSE;
+
+ SetWindowTitle();
+
+ if (fullscreen && !video.fullscreen_enabled && video.fullscreen_available)
+ {
+ /* switch display to fullscreen mode, if available */
+ success = SDLCreateScreen(TRUE);
+
+ if (!success)
+ {
+ /* switching display to fullscreen mode failed -- do not try it again */
+ video.fullscreen_available = FALSE;
+ }
+ else
+ {
+ video.fullscreen_enabled = TRUE;
+ }
+ }
+
+ if ((!fullscreen && video.fullscreen_enabled) || !success)
+ {
+ /* switch display to window mode */
+ success = SDLCreateScreen(FALSE);
+
+ if (!success)
+ {
+ /* switching display to window mode failed -- should not happen */
+ }
+ else
+ {
+ video.fullscreen_enabled = FALSE;
+ video.window_scaling_percent = setup.window_scaling_percent;
+ video.window_scaling_quality = setup.window_scaling_quality;
+
+ SDLSetScreenRenderingMode(setup.screen_rendering_mode);
+ }
+ }
+
+#if defined(TARGET_SDL2)
+ SDLRedrawWindow(); // map window
+#endif
+
+#ifdef DEBUG
+#if defined(PLATFORM_WIN32)
+ // experimental drag and drop code
+
+ SDL_EventState(SDL_SYSWMEVENT, SDL_ENABLE);
+
+ {
+ SDL_SysWMinfo wminfo;
+ HWND hwnd;
+ boolean wminfo_success = FALSE;
+
+ SDL_VERSION(&wminfo.version);
+#if defined(TARGET_SDL2)
+ if (sdl_window)
+ wminfo_success = SDL_GetWindowWMInfo(sdl_window, &wminfo);
+#else
+ wminfo_success = (SDL_GetWMInfo(&wminfo) == 1);
+#endif
+
+ if (wminfo_success)
+ {
+#if defined(TARGET_SDL2)
+ hwnd = wminfo.info.win.window;
+#else
+ hwnd = wminfo.window;
+#endif
+
+ DragAcceptFiles(hwnd, TRUE);
+ }
+ }
+#endif
+#endif
+
+ return success;
+}
+
+void SDLSetWindowTitle()
+{
+#if defined(TARGET_SDL2)
+ if (sdl_window == NULL)
+ return;
+
+ SDL_SetWindowTitle(sdl_window, program.window_title);
+#else
+ SDL_WM_SetCaption(program.window_title, program.window_title);
+#endif
+}
+
+#if defined(TARGET_SDL2)
+void SDLSetWindowScaling(int window_scaling_percent)
+{
+ if (sdl_window == NULL)
+ return;
+
+ float window_scaling_factor = (float)window_scaling_percent / 100;
+ int new_window_width = (int)(window_scaling_factor * video.screen_width);
+ int new_window_height = (int)(window_scaling_factor * video.screen_height);
+
+ SDL_SetWindowSize(sdl_window, new_window_width, new_window_height);
+
+ video.window_scaling_percent = window_scaling_percent;
+ video.window_width = new_window_width;
+ video.window_height = new_window_height;
+
+ SetWindowTitle();
+}
+
+void SDLSetWindowScalingQuality(char *window_scaling_quality)
+{
+ SDL_Texture *new_texture;
+
+ if (sdl_texture_stream == NULL)
+ return;
+
+ SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, window_scaling_quality);
+
+ new_texture = SDL_CreateTexture(sdl_renderer,
+ SDL_PIXELFORMAT_ARGB8888,
+ SDL_TEXTUREACCESS_STREAMING,
+ video.width, video.height);
+
+ if (new_texture != NULL)
+ {
+ SDL_DestroyTexture(sdl_texture_stream);
+
+ sdl_texture_stream = new_texture;
+ }
+
+ if (SDL_RenderTargetSupported(sdl_renderer))
+ new_texture = SDL_CreateTexture(sdl_renderer,
+ SDL_PIXELFORMAT_ARGB8888,
+ SDL_TEXTUREACCESS_TARGET,
+ video.width, video.height);
+ else
+ new_texture = NULL;
+
+ if (new_texture != NULL)
+ {
+ SDL_DestroyTexture(sdl_texture_target);
+
+ sdl_texture_target = new_texture;
+ }
+
+ SDLRedrawWindow();
+
+ video.window_scaling_quality = window_scaling_quality;
+}
+
+void SDLSetWindowFullscreen(boolean fullscreen)
+{
+ if (sdl_window == NULL)
+ return;
+
+ int flags = (fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
+
+ if (SDL_SetWindowFullscreen(sdl_window, flags) == 0)
+ video.fullscreen_enabled = fullscreen_enabled = fullscreen;
+
+ // if screen size was changed in fullscreen mode, correct desktop window size
+ if (!fullscreen && video.fullscreen_initial)
+ {
+ SDLSetWindowScaling(setup.window_scaling_percent);
+ SDL_SetWindowPosition(sdl_window,
+ SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED);
+
+ video.fullscreen_initial = FALSE;
+ }
+}
+
+void SDLSetDisplaySize()
+{
+ SDL_Rect display_bounds;
+
+ SDL_GetDisplayBounds(0, &display_bounds);
+
+ video.display_width = display_bounds.w;
+ video.display_height = display_bounds.h;
+
+#if 0
+ Error(ERR_DEBUG, "SDL real screen size: %d x %d",
+ video.display_width, video.display_height);
+#endif
+}
+
+void SDLSetScreenSizeAndOffsets(int width, int height)
+{
+ // set default video screen size and offsets
+ video.screen_width = width;
+ video.screen_height = height;
+ video.screen_xoffset = 0;
+ video.screen_yoffset = 0;
+
+#if defined(USE_COMPLETE_DISPLAY)
+ float ratio_video = (float) width / height;
+ float ratio_display = (float) video.display_width / video.display_height;
+
+ if (ratio_video != ratio_display)
+ {
+ // adjust drawable screen size to cover the whole device display
+
+ if (ratio_video < ratio_display)
+ video.screen_width *= ratio_display / ratio_video;
+ else
+ video.screen_height *= ratio_video / ratio_display;
+
+ video.screen_xoffset = (video.screen_width - width) / 2;
+ video.screen_yoffset = (video.screen_height - height) / 2;
+
+#if 0
+ Error(ERR_DEBUG, "Changing screen from %dx%d to %dx%d (%.2f to %.2f)",
+ width, height,
+ video.screen_width, video.screen_height,
+ ratio_video, ratio_display);
+#endif
+ }
+#endif
+}
+
+void SDLSetScreenSizeForRenderer(int width, int height)
+{
+ SDL_RenderSetLogicalSize(sdl_renderer, width, height);
+}
+
+void SDLSetScreenProperties()
+{
+ SDLSetScreenSizeAndOffsets(video.width, video.height);
+ SDLSetScreenSizeForRenderer(video.screen_width, video.screen_height);
+}
+
+#endif
+
+void SDLSetScreenRenderingMode(char *screen_rendering_mode)
+{
+#if defined(TARGET_SDL2)
+ video.screen_rendering_mode =
+ (strEqual(screen_rendering_mode, STR_SPECIAL_RENDERING_BITMAP) ?
+ SPECIAL_RENDERING_BITMAP :
+ strEqual(screen_rendering_mode, STR_SPECIAL_RENDERING_TARGET) ?
+ SPECIAL_RENDERING_TARGET:
+ strEqual(screen_rendering_mode, STR_SPECIAL_RENDERING_DOUBLE) ?
+ SPECIAL_RENDERING_DOUBLE : SPECIAL_RENDERING_OFF);
+#else
+ video.screen_rendering_mode = SPECIAL_RENDERING_BITMAP;
+#endif
+}
+
+void SDLRedrawWindow()
+{
+ UpdateScreen_WithoutFrameDelay(NULL);
+}
+
+void SDLCreateBitmapContent(Bitmap *bitmap, int width, int height,
+ int depth)
+{
+ if (program.headless)
+ return;
+
+ SDL_Surface *surface =
+ SDL_CreateRGBSurface(SURFACE_FLAGS, width, height, depth, 0,0,0, 0);
+
+ if (surface == NULL)
+ Error(ERR_EXIT, "SDL_CreateRGBSurface() failed: %s", SDL_GetError());
+
+ SDLSetNativeSurface(&surface);
+
+ bitmap->surface = surface;
+}
+
+void SDLFreeBitmapPointers(Bitmap *bitmap)
+{
+ if (bitmap->surface)
+ SDL_FreeSurface(bitmap->surface);
+ if (bitmap->surface_masked)
+ SDL_FreeSurface(bitmap->surface_masked);
+
+ bitmap->surface = NULL;
+ bitmap->surface_masked = NULL;
+
+#if defined(TARGET_SDL2)
+ if (bitmap->texture)
+ SDL_DestroyTexture(bitmap->texture);
+ if (bitmap->texture_masked)
+ SDL_DestroyTexture(bitmap->texture_masked);
+
+ bitmap->texture = NULL;
+ bitmap->texture_masked = NULL;
+#endif
+}
+
+void SDLCopyArea(Bitmap *src_bitmap, Bitmap *dst_bitmap,
+ int src_x, int src_y, int width, int height,
+ int dst_x, int dst_y, int mask_mode)
+{
+ Bitmap *real_dst_bitmap = (dst_bitmap == window ? backbuffer : dst_bitmap);
+ SDL_Rect src_rect, dst_rect;
+
+ src_rect.x = src_x;
+ src_rect.y = src_y;
+ src_rect.w = width;
+ src_rect.h = height;
+
+ dst_rect.x = dst_x;
+ dst_rect.y = dst_y;
+ dst_rect.w = width;
+ dst_rect.h = height;
+
+ // if (src_bitmap != backbuffer || dst_bitmap != window)
+ if (!(src_bitmap == backbuffer && dst_bitmap == window))
+ SDL_BlitSurface((mask_mode == BLIT_MASKED ?
+ src_bitmap->surface_masked : src_bitmap->surface),
+ &src_rect, real_dst_bitmap->surface, &dst_rect);
+
+ if (dst_bitmap == window)
+ UpdateScreen_WithFrameDelay(&dst_rect);
+}
+
+void SDLBlitTexture(Bitmap *bitmap,
+ int src_x, int src_y, int width, int height,
+ int dst_x, int dst_y, int mask_mode)
+{
+#if defined(TARGET_SDL2)
+ SDL_Texture *texture;
+ SDL_Rect src_rect;
+ SDL_Rect dst_rect;
+
+ texture =
+ (mask_mode == BLIT_MASKED ? bitmap->texture_masked : bitmap->texture);
+
+ if (texture == NULL)
+ return;
+
+ src_rect.x = src_x;
+ src_rect.y = src_y;
+ src_rect.w = width;
+ src_rect.h = height;
+
+ dst_rect.x = dst_x;
+ dst_rect.y = dst_y;
+ dst_rect.w = width;
+ dst_rect.h = height;
+
+ SDL_RenderCopy(sdl_renderer, texture, &src_rect, &dst_rect);
+#endif
+}
+
+void SDLFillRectangle(Bitmap *dst_bitmap, int x, int y, int width, int height,
+ Uint32 color)
+{
+ Bitmap *real_dst_bitmap = (dst_bitmap == window ? backbuffer : dst_bitmap);
+ SDL_Rect rect;
+
+ rect.x = x;
+ rect.y = y;
+ rect.w = width;
+ rect.h = height;
+
+ SDL_FillRect(real_dst_bitmap->surface, &rect, color);
+
+ if (dst_bitmap == window)
+ UpdateScreen_WithFrameDelay(&rect);
+}
+
+void PrepareFadeBitmap(int draw_target)
+{
+ Bitmap *fade_bitmap =
+ (draw_target == DRAW_TO_FADE_SOURCE ? gfx.fade_bitmap_source :
+ draw_target == DRAW_TO_FADE_TARGET ? gfx.fade_bitmap_target : NULL);
+
+ if (fade_bitmap == NULL)
+ return;
+
+ // copy backbuffer to fading buffer
+ BlitBitmap(backbuffer, fade_bitmap, 0, 0, gfx.win_xsize, gfx.win_ysize, 0, 0);
+
+ // add border and animations to fading buffer
+ FinalizeScreen(draw_target);
+}
+
+void SDLFadeRectangle(int x, int y, int width, int height,
+ int fade_mode, int fade_delay, int post_delay,
+ void (*draw_border_function)(void))
+{
+ SDL_Surface *surface_backup = gfx.fade_bitmap_backup->surface;
+ SDL_Surface *surface_source = gfx.fade_bitmap_source->surface;
+ SDL_Surface *surface_target = gfx.fade_bitmap_target->surface;
+ SDL_Surface *surface_black = gfx.fade_bitmap_black->surface;
+ SDL_Surface *surface_screen = backbuffer->surface;
+ SDL_Rect src_rect, dst_rect;
+ SDL_Rect dst_rect2;
+ int src_x = x, src_y = y;
+ int dst_x = x, dst_y = y;
+ unsigned int time_last, time_current;
+
+ // store function for drawing global masked border
+ void (*draw_global_border_function)(int) = gfx.draw_global_border_function;
+
+ // deactivate drawing of global border while fading, if needed
+ if (draw_border_function == NULL)
+ gfx.draw_global_border_function = NULL;
+
+ src_rect.x = src_x;
+ src_rect.y = src_y;
+ src_rect.w = width;
+ src_rect.h = height;
+
+ dst_rect.x = dst_x;
+ dst_rect.y = dst_y;
+ dst_rect.w = width; /* (ignored) */
+ dst_rect.h = height; /* (ignored) */
+
+ dst_rect2 = dst_rect;
+
+ // before fading in, store backbuffer (without animation graphics)
+ if (fade_mode & (FADE_TYPE_FADE_IN | FADE_TYPE_TRANSFORM))
+ SDL_BlitSurface(surface_screen, &dst_rect, surface_backup, &src_rect);
+
+ /* copy source and target surfaces to temporary surfaces for fading */
+ if (fade_mode & FADE_TYPE_TRANSFORM)
+ {
+ // (source and target fading buffer already prepared)
+ }
+ else if (fade_mode & FADE_TYPE_FADE_IN)
+ {
+ // (target fading buffer already prepared)
+ SDL_BlitSurface(surface_black, &src_rect, surface_source, &src_rect);
+ }
+ else /* FADE_TYPE_FADE_OUT */
+ {
+ // (source fading buffer already prepared)
+ SDL_BlitSurface(surface_black, &src_rect, surface_target, &src_rect);
+ }
+
+ time_current = SDL_GetTicks();
+
+ if (fade_mode == FADE_MODE_MELT)
+ {
+ boolean done = FALSE;
+ int melt_pixels = 2;
+ int melt_columns = width / melt_pixels;
+ int ypos[melt_columns];
+ int max_steps = height / 8 + 32;
+ int steps_done = 0;
+ float steps = 0;
+ int i;
+
+ SDL_BlitSurface(surface_source, &src_rect, surface_screen, &dst_rect);
+
+ SDLSetAlpha(surface_target, FALSE, 0); /* disable alpha blending */
+
+ ypos[0] = -GetSimpleRandom(16);
+
+ for (i = 1 ; i < melt_columns; i++)
+ {
+ int r = GetSimpleRandom(3) - 1; /* randomly choose from { -1, 0, -1 } */
+
+ ypos[i] = ypos[i - 1] + r;
+
+ if (ypos[i] > 0)
+ ypos[i] = 0;
+ else
+ if (ypos[i] == -16)
+ ypos[i] = -15;
+ }
+
+ while (!done)
+ {
+ int steps_final;
+
+ time_last = time_current;
+ time_current = SDL_GetTicks();
+ steps += max_steps * ((float)(time_current - time_last) / fade_delay);
+ steps_final = MIN(MAX(0, steps), max_steps);
+
+ steps_done++;
+
+ done = (steps_done >= steps_final);
+
+ for (i = 0 ; i < melt_columns; i++)
+ {
+ if (ypos[i] < 0)
+ {
+ ypos[i]++;
+
+ done = FALSE;
+ }
+ else if (ypos[i] < height)
+ {
+ int y1 = 16;
+ int y2 = 8;
+ int y3 = 8;
+ int dy = (ypos[i] < y1) ? ypos[i] + 1 : y2 + GetSimpleRandom(y3);
+
+ if (ypos[i] + dy >= height)
+ dy = height - ypos[i];
+
+ /* copy part of (appearing) target surface to upper area */
+ src_rect.x = src_x + i * melt_pixels;
+ // src_rect.y = src_y + ypos[i];
+ src_rect.y = src_y;
+ src_rect.w = melt_pixels;
+ // src_rect.h = dy;
+ src_rect.h = ypos[i] + dy;
+
+ dst_rect.x = dst_x + i * melt_pixels;
+ // dst_rect.y = dst_y + ypos[i];
+ dst_rect.y = dst_y;
+
+ if (steps_done >= steps_final)
+ SDL_BlitSurface(surface_target, &src_rect,
+ surface_screen, &dst_rect);
+
+ ypos[i] += dy;
+
+ /* copy part of (disappearing) source surface to lower area */
+ src_rect.x = src_x + i * melt_pixels;
+ src_rect.y = src_y;
+ src_rect.w = melt_pixels;
+ src_rect.h = height - ypos[i];
+
+ dst_rect.x = dst_x + i * melt_pixels;
+ dst_rect.y = dst_y + ypos[i];
+
+ if (steps_done >= steps_final)
+ SDL_BlitSurface(surface_source, &src_rect,
+ surface_screen, &dst_rect);
+
+ done = FALSE;
+ }
+ else
+ {
+ src_rect.x = src_x + i * melt_pixels;
+ src_rect.y = src_y;
+ src_rect.w = melt_pixels;
+ src_rect.h = height;
+
+ dst_rect.x = dst_x + i * melt_pixels;
+ dst_rect.y = dst_y;
+
+ if (steps_done >= steps_final)
+ SDL_BlitSurface(surface_target, &src_rect,
+ surface_screen, &dst_rect);
+ }
+ }
+
+ if (steps_done >= steps_final)
+ {
+ if (draw_border_function != NULL)
+ draw_border_function();
+
+ UpdateScreen_WithFrameDelay(&dst_rect2);
+ }
+ }
+ }
+ else if (fade_mode == FADE_MODE_CURTAIN)
{
- { 640, 480 },
- { 800, 600 },
- { 1024, 768 },
- { -1, -1 }
- };
-#endif
+ float xx;
+ int xx_final;
+ int xx_size = width / 2;
- /* default: normal game window size */
- fullscreen_width = video.width;
- fullscreen_height = video.height;
- fullscreen_xoffset = 0;
- fullscreen_yoffset = 0;
+ SDL_BlitSurface(surface_target, &src_rect, surface_screen, &dst_rect);
-#ifdef FULLSCREEN_BUG
- for (i=0; screen_xy[i][0] != -1; i++)
- {
- if (video.width <= screen_xy[i][0] && video.height <= screen_xy[i][1])
+ SDLSetAlpha(surface_source, FALSE, 0); /* disable alpha blending */
+
+ for (xx = 0; xx < xx_size;)
{
- fullscreen_width = screen_xy[i][0];
- fullscreen_height = screen_xy[i][1];
- break;
- }
- }
+ time_last = time_current;
+ time_current = SDL_GetTicks();
+ xx += xx_size * ((float)(time_current - time_last) / fade_delay);
+ xx_final = MIN(MAX(0, xx), xx_size);
- fullscreen_xoffset = (fullscreen_width - video.width) / 2;
- fullscreen_yoffset = (fullscreen_height - video.height) / 2;
-#endif
+ src_rect.x = src_x;
+ src_rect.y = src_y;
+ src_rect.w = width;
+ src_rect.h = height;
- /* open SDL video output device (window or fullscreen mode) */
- if (!SDLSetVideoMode(backbuffer, fullscreen))
- Error(ERR_EXIT, "setting video mode failed");
+ dst_rect.x = dst_x;
+ dst_rect.y = dst_y;
- /* set window and icon title */
- SDL_WM_SetCaption(program.window_title, program.window_title);
+ /* draw new (target) image to screen buffer */
+ SDL_BlitSurface(surface_target, &src_rect, surface_screen, &dst_rect);
- /* SDL cannot directly draw to the visible video framebuffer like X11,
- but always uses a backbuffer, which is then blitted to the visible
- video framebuffer with 'SDL_UpdateRect' (or replaced with the current
- visible video framebuffer with 'SDL_Flip', if the hardware supports
- this). Therefore do not use an additional backbuffer for drawing, but
- use a symbolic buffer (distinguishable from the SDL backbuffer) called
- 'window', which indicates that the SDL backbuffer should be updated to
- the visible video framebuffer when attempting to blit to it.
+ if (xx_final < xx_size)
+ {
+ src_rect.w = xx_size - xx_final;
+ src_rect.h = height;
- For convenience, it seems to be a good idea to create this symbolic
- buffer 'window' at the same size as the SDL backbuffer. Although it
- should never be drawn to directly, it would do no harm nevertheless. */
+ /* draw old (source) image to screen buffer (left side) */
- /* create additional (symbolic) buffer for double-buffering */
- *window = CreateBitmap(video.width, video.height, video.depth);
-}
+ src_rect.x = src_x + xx_final;
+ dst_rect.x = dst_x;
-inline boolean SDLSetVideoMode(DrawBuffer **backbuffer, boolean fullscreen)
-{
- boolean success = TRUE;
- int surface_flags_fullscreen = SURFACE_FLAGS | SDL_FULLSCREEN;
- int surface_flags_window = SURFACE_FLAGS;
- SDL_Surface *new_surface = NULL;
+ SDL_BlitSurface(surface_source, &src_rect, surface_screen, &dst_rect);
- if (*backbuffer == NULL)
- *backbuffer = CreateBitmapStruct();
+ /* draw old (source) image to screen buffer (right side) */
- if (fullscreen && !video.fullscreen_enabled && video.fullscreen_available)
- {
- video_xoffset = fullscreen_xoffset;
- video_yoffset = fullscreen_yoffset;
+ src_rect.x = src_x + xx_size;
+ dst_rect.x = dst_x + xx_size + xx_final;
- /* switch display to fullscreen mode, if available */
- if ((new_surface = SDL_SetVideoMode(fullscreen_width, fullscreen_height,
- video.depth, surface_flags_fullscreen))
- == NULL)
- {
- /* switching display to fullscreen mode failed */
- Error(ERR_WARN, "SDL_SetVideoMode() failed: %s", SDL_GetError());
+ SDL_BlitSurface(surface_source, &src_rect, surface_screen, &dst_rect);
+ }
- /* do not try it again */
- video.fullscreen_available = FALSE;
- success = FALSE;
- }
- else
- {
- (*backbuffer)->surface = new_surface;
+ if (draw_border_function != NULL)
+ draw_border_function();
- video.fullscreen_enabled = TRUE;
- success = TRUE;
+ /* only update the region of the screen that is affected from fading */
+ UpdateScreen_WithFrameDelay(&dst_rect2);
}
}
-
- if ((!fullscreen && video.fullscreen_enabled) || new_surface == NULL)
+ else /* fading in, fading out or cross-fading */
{
- video_xoffset = 0;
- video_yoffset = 0;
+ float alpha;
+ int alpha_final;
- /* switch display to window mode */
- if ((new_surface = SDL_SetVideoMode(video.width, video.height,
- video.depth, surface_flags_window))
- == NULL)
- {
- /* switching display to window mode failed -- should not happen */
- Error(ERR_WARN, "SDL_SetVideoMode() failed: %s", SDL_GetError());
-
- success = FALSE;
- }
- else
+ for (alpha = 0.0; alpha < 255.0;)
{
- (*backbuffer)->surface = new_surface;
+ time_last = time_current;
+ time_current = SDL_GetTicks();
+ alpha += 255 * ((float)(time_current - time_last) / fade_delay);
+ alpha_final = MIN(MAX(0, alpha), 255);
- video.fullscreen_enabled = FALSE;
- success = TRUE;
- }
- }
+ /* draw existing (source) image to screen buffer */
+ SDL_BlitSurface(surface_source, &src_rect, surface_screen, &dst_rect);
- return success;
-}
+ /* draw new (target) image to screen buffer using alpha blending */
+ SDLSetAlpha(surface_target, TRUE, alpha_final);
+ SDL_BlitSurface(surface_target, &src_rect, surface_screen, &dst_rect);
-inline void SDLCopyArea(Bitmap *src_bitmap, Bitmap *dst_bitmap,
- int src_x, int src_y,
- int width, int height,
- int dst_x, int dst_y, int copy_mode)
-{
- Bitmap *real_dst_bitmap = (dst_bitmap == window ? backbuffer : dst_bitmap);
- SDL_Rect src_rect, dst_rect;
+ if (draw_border_function != NULL)
+ draw_border_function();
-#ifdef FULLSCREEN_BUG
- if (src_bitmap == backbuffer)
- {
- src_x += video_xoffset;
- src_y += video_yoffset;
+ /* only update the region of the screen that is affected from fading */
+ UpdateScreen_WithFrameDelay(&dst_rect);
+ }
}
-#endif
-
- src_rect.x = src_x;
- src_rect.y = src_y;
- src_rect.w = width;
- src_rect.h = height;
-#ifdef FULLSCREEN_BUG
- if (dst_bitmap == backbuffer || dst_bitmap == window)
+ if (post_delay > 0)
{
- dst_x += video_xoffset;
- dst_y += video_yoffset;
- }
-#endif
+ unsigned int time_post_delay;
- dst_rect.x = dst_x;
- dst_rect.y = dst_y;
- dst_rect.w = width;
- dst_rect.h = height;
-
- if (src_bitmap != backbuffer || dst_bitmap != window)
- SDL_BlitSurface((copy_mode == SDLCOPYAREA_MASKED ?
- src_bitmap->surface_masked : src_bitmap->surface),
- &src_rect, real_dst_bitmap->surface, &dst_rect);
-
- if (dst_bitmap == window)
- SDL_UpdateRect(backbuffer->surface, dst_x, dst_y, width, height);
-}
+ time_current = SDL_GetTicks();
+ time_post_delay = time_current + post_delay;
-inline void SDLFillRectangle(Bitmap *dst_bitmap, int x, int y,
- int width, int height, unsigned int color)
-{
- Bitmap *real_dst_bitmap = (dst_bitmap == window ? backbuffer : dst_bitmap);
- SDL_Rect rect;
- unsigned int color_r = (color >> 16) && 0xff;
- unsigned int color_g = (color >> 8) && 0xff;
- unsigned int color_b = (color >> 0) && 0xff;
+ while (time_current < time_post_delay)
+ {
+ // updating the screen contains waiting for frame delay (non-busy)
+ UpdateScreen_WithFrameDelay(NULL);
-#ifdef FULLSCREEN_BUG
- if (dst_bitmap == backbuffer || dst_bitmap == window)
- {
- x += video_xoffset;
- y += video_yoffset;
+ time_current = SDL_GetTicks();
+ }
}
-#endif
-
- rect.x = x;
- rect.y = y;
- rect.w = width;
- rect.h = height;
- SDL_FillRect(real_dst_bitmap->surface, &rect,
- SDL_MapRGB(real_dst_bitmap->surface->format,
- color_r, color_g, color_b));
+ // restore function for drawing global masked border
+ gfx.draw_global_border_function = draw_global_border_function;
- if (dst_bitmap == window)
- SDL_UpdateRect(backbuffer->surface, x, y, width, height);
+ // after fading in, restore backbuffer (without animation graphics)
+ if (fade_mode & (FADE_TYPE_FADE_IN | FADE_TYPE_TRANSFORM))
+ SDL_BlitSurface(surface_backup, &dst_rect, surface_screen, &src_rect);
}
-inline void SDLDrawSimpleLine(Bitmap *dst_bitmap, int from_x, int from_y,
- int to_x, int to_y, unsigned int color)
+void SDLDrawSimpleLine(Bitmap *dst_bitmap, int from_x, int from_y,
+ int to_x, int to_y, Uint32 color)
{
SDL_Surface *surface = dst_bitmap->surface;
SDL_Rect rect;
- unsigned int color_r = (color >> 16) & 0xff;
- unsigned int color_g = (color >> 8) & 0xff;
- unsigned int color_b = (color >> 0) & 0xff;
if (from_x > to_x)
swap_numbers(&from_x, &to_x);
rect.w = (to_x - from_x + 1);
rect.h = (to_y - from_y + 1);
-#ifdef FULLSCREEN_BUG
- if (dst_bitmap == backbuffer || dst_bitmap == window)
- {
- rect.x += video_xoffset;
- rect.y += video_yoffset;
- }
-#endif
-
- SDL_FillRect(surface, &rect,
- SDL_MapRGB(surface->format, color_r, color_g, color_b));
+ SDL_FillRect(surface, &rect, color);
}
-inline void SDLDrawLine(Bitmap *dst_bitmap, int from_x, int from_y,
- int to_x, int to_y, Uint32 color)
+void SDLDrawLine(Bitmap *dst_bitmap, int from_x, int from_y,
+ int to_x, int to_y, Uint32 color)
{
-#ifdef FULLSCREEN_BUG
- if (dst_bitmap == backbuffer || dst_bitmap == window)
- {
- from_x += video_xoffset;
- from_y += video_yoffset;
- to_x += video_xoffset;
- to_y += video_yoffset;
- }
-#endif
-
sge_Line(dst_bitmap->surface, from_x, from_y, to_x, to_y, color);
}
-#if 0
-inline void SDLDrawLines(SDL_Surface *surface, struct XY *points,
- int num_points, Uint32 color)
+#if ENABLE_UNUSED_CODE
+void SDLDrawLines(SDL_Surface *surface, struct XY *points,
+ int num_points, Uint32 color)
{
int i, x, y;
int line_width = 4;
- for (i=0; i<num_points - 1; i++)
+ for (i = 0; i < num_points - 1; i++)
{
- for (x=0; x<line_width; x++)
+ for (x = 0; x < line_width; x++)
{
- for (y=0; y<line_width; y++)
+ for (y = 0; y < line_width; y++)
{
int dx = x - line_width / 2;
int dy = y - line_width / 2;
}
#endif
-inline Pixel SDLGetPixel(Bitmap *dst_bitmap, int x, int y)
+Pixel SDLGetPixel(Bitmap *src_bitmap, int x, int y)
{
- SDL_Surface *surface = dst_bitmap->surface;
-
-#ifdef FULLSCREEN_BUG
- if (dst_bitmap == backbuffer || dst_bitmap == window)
- {
- x += video_xoffset;
- y += video_yoffset;
- }
-#endif
+ SDL_Surface *surface = src_bitmap->surface;
switch (surface->format->BytesPerPixel)
{
/* ========================================================================= */
-/* The following functions have been taken from the SGE library */
-/* (SDL Graphics Extension Library) by Anders Lindström */
+/* The following functions were taken from the SGE library */
+/* (SDL Graphics Extension Library) by Anders Lindström */
/* http://www.etek.chalmers.se/~e8cal1/sge/index.html */
/* ========================================================================= */
}
void sge_PutPixelRGB(SDL_Surface *surface, Sint16 x, Sint16 y,
- Uint8 R, Uint8 G, Uint8 B)
+ Uint8 r, Uint8 g, Uint8 b)
{
- sge_PutPixel(surface, x, y, SDL_MapRGB(surface->format, R, G, B));
+ sge_PutPixel(surface, x, y, SDL_MapRGB(surface->format, r, g, b));
}
Sint32 sge_CalcYPitch(SDL_Surface *dest, Sint16 y)
sge_Line(Surface, x1, y1, x2, y2, SDL_MapRGB(Surface->format, R, G, B));
}
-Bitmap *SDLLoadImage(char *filename)
-{
- Bitmap *new_bitmap = CreateBitmapStruct();
- SDL_Surface *sdl_image_tmp;
+void SDLPutPixel(Bitmap *dst_bitmap, int x, int y, Pixel pixel)
+{
+ sge_PutPixel(dst_bitmap->surface, x, y, pixel);
+}
+
+
+/*
+ -----------------------------------------------------------------------------
+ quick (no, it's slow) and dirty hack to "invert" rectangle inside SDL surface
+ -----------------------------------------------------------------------------
+*/
+
+void SDLInvertArea(Bitmap *bitmap, int src_x, int src_y,
+ int width, int height, Uint32 color)
+{
+ int x, y;
+
+ for (y = src_y; y < src_y + height; y++)
+ {
+ for (x = src_x; x < src_x + width; x++)
+ {
+ Uint32 pixel = SDLGetPixel(bitmap, x, y);
+
+ SDLPutPixel(bitmap, x, y, pixel == BLACK_PIXEL ? color : BLACK_PIXEL);
+ }
+ }
+}
+
+void SDLCopyInverseMasked(Bitmap *src_bitmap, Bitmap *dst_bitmap,
+ int src_x, int src_y, int width, int height,
+ int dst_x, int dst_y)
+{
+ int x, y;
+
+ for (y = 0; y < height; y++)
+ {
+ for (x = 0; x < width; x++)
+ {
+ Uint32 pixel = SDLGetPixel(src_bitmap, src_x + x, src_y + y);
+
+ if (pixel != BLACK_PIXEL)
+ SDLPutPixel(dst_bitmap, dst_x + x, dst_y + y, BLACK_PIXEL);
+ }
+ }
+}
+
+
+/* ========================================================================= */
+/* The following functions were taken from the SDL_gfx library version 2.0.3 */
+/* (Rotozoomer) by Andreas Schiffler */
+/* http://www.ferzkopp.net/Software/SDL_gfx-2.0/index.html */
+/* ========================================================================= */
+
+/*
+ -----------------------------------------------------------------------------
+ 32 bit zoomer
+
+ zoomes 32bit RGBA/ABGR 'src' surface to 'dst' surface.
+ -----------------------------------------------------------------------------
+*/
+
+typedef struct
+{
+ Uint8 r;
+ Uint8 g;
+ Uint8 b;
+ Uint8 a;
+} tColorRGBA;
+
+int zoomSurfaceRGBA_scaleDownBy2(SDL_Surface *src, SDL_Surface *dst)
+{
+ int x, y;
+ tColorRGBA *sp, *csp, *dp;
+ int dgap;
+
+ /* pointer setup */
+ sp = csp = (tColorRGBA *) src->pixels;
+ dp = (tColorRGBA *) dst->pixels;
+ dgap = dst->pitch - dst->w * 4;
+
+ for (y = 0; y < dst->h; y++)
+ {
+ sp = csp;
+
+ for (x = 0; x < dst->w; x++)
+ {
+ tColorRGBA *sp0 = sp;
+ tColorRGBA *sp1 = (tColorRGBA *) ((Uint8 *) sp + src->pitch);
+ tColorRGBA *sp00 = &sp0[0];
+ tColorRGBA *sp01 = &sp0[1];
+ tColorRGBA *sp10 = &sp1[0];
+ tColorRGBA *sp11 = &sp1[1];
+ tColorRGBA new;
+
+ /* create new color pixel from all four source color pixels */
+ new.r = (sp00->r + sp01->r + sp10->r + sp11->r) / 4;
+ new.g = (sp00->g + sp01->g + sp10->g + sp11->g) / 4;
+ new.b = (sp00->b + sp01->b + sp10->b + sp11->b) / 4;
+ new.a = (sp00->a + sp01->a + sp10->a + sp11->a) / 4;
+
+ /* draw */
+ *dp = new;
+
+ /* advance source pointers */
+ sp += 2;
+
+ /* advance destination pointer */
+ dp++;
+ }
+
+ /* advance source pointer */
+ csp = (tColorRGBA *) ((Uint8 *) csp + 2 * src->pitch);
+
+ /* advance destination pointers */
+ dp = (tColorRGBA *) ((Uint8 *) dp + dgap);
+ }
+
+ return 0;
+}
+
+int zoomSurfaceRGBA(SDL_Surface *src, SDL_Surface *dst)
+{
+ int x, y, *sax, *say, *csax, *csay;
+ float sx, sy;
+ tColorRGBA *sp, *csp, *csp0, *dp;
+ int dgap;
+
+ /* use specialized zoom function when scaling down to exactly half size */
+ if (src->w == 2 * dst->w &&
+ src->h == 2 * dst->h)
+ return zoomSurfaceRGBA_scaleDownBy2(src, dst);
+
+ /* variable setup */
+ sx = (float) src->w / (float) dst->w;
+ sy = (float) src->h / (float) dst->h;
+
+ /* allocate memory for row increments */
+ csax = sax = (int *)checked_malloc((dst->w + 1) * sizeof(Uint32));
+ csay = say = (int *)checked_malloc((dst->h + 1) * sizeof(Uint32));
+
+ /* precalculate row increments */
+ for (x = 0; x <= dst->w; x++)
+ *csax++ = (int)(sx * x);
+
+ for (y = 0; y <= dst->h; y++)
+ *csay++ = (int)(sy * y);
+
+ /* pointer setup */
+ sp = csp = csp0 = (tColorRGBA *) src->pixels;
+ dp = (tColorRGBA *) dst->pixels;
+ dgap = dst->pitch - dst->w * 4;
+
+ csay = say;
+ for (y = 0; y < dst->h; y++)
+ {
+ sp = csp;
+ csax = sax;
+
+ for (x = 0; x < dst->w; x++)
+ {
+ /* draw */
+ *dp = *sp;
+
+ /* advance source pointers */
+ csax++;
+ sp = csp + *csax;
+
+ /* advance destination pointer */
+ dp++;
+ }
+
+ /* advance source pointer */
+ csay++;
+ csp = (tColorRGBA *) ((Uint8 *) csp0 + *csay * src->pitch);
+
+ /* advance destination pointers */
+ dp = (tColorRGBA *) ((Uint8 *) dp + dgap);
+ }
+
+ free(sax);
+ free(say);
+
+ return 0;
+}
+
+/*
+ -----------------------------------------------------------------------------
+ 8 bit zoomer
+
+ zoomes 8 bit palette/Y 'src' surface to 'dst' surface
+ -----------------------------------------------------------------------------
+*/
+
+int zoomSurfaceY(SDL_Surface * src, SDL_Surface * dst)
+{
+ Uint32 x, y, sx, sy, *sax, *say, *csax, *csay, csx, csy;
+ Uint8 *sp, *dp, *csp;
+ int dgap;
+
+ /* variable setup */
+ sx = (Uint32) (65536.0 * (float) src->w / (float) dst->w);
+ sy = (Uint32) (65536.0 * (float) src->h / (float) dst->h);
+
+ /* allocate memory for row increments */
+ sax = (Uint32 *)checked_malloc(dst->w * sizeof(Uint32));
+ say = (Uint32 *)checked_malloc(dst->h * sizeof(Uint32));
+
+ /* precalculate row increments */
+ csx = 0;
+ csax = sax;
+ for (x = 0; x < dst->w; x++)
+ {
+ csx += sx;
+ *csax = (csx >> 16);
+ csx &= 0xffff;
+ csax++;
+ }
+
+ csy = 0;
+ csay = say;
+ for (y = 0; y < dst->h; y++)
+ {
+ csy += sy;
+ *csay = (csy >> 16);
+ csy &= 0xffff;
+ csay++;
+ }
+
+ csx = 0;
+ csax = sax;
+ for (x = 0; x < dst->w; x++)
+ {
+ csx += (*csax);
+ csax++;
+ }
+
+ csy = 0;
+ csay = say;
+ for (y = 0; y < dst->h; y++)
+ {
+ csy += (*csay);
+ csay++;
+ }
+
+ /* pointer setup */
+ sp = csp = (Uint8 *) src->pixels;
+ dp = (Uint8 *) dst->pixels;
+ dgap = dst->pitch - dst->w;
+
+ /* draw */
+ csay = say;
+ for (y = 0; y < dst->h; y++)
+ {
+ csax = sax;
+ sp = csp;
+ for (x = 0; x < dst->w; x++)
+ {
+ /* draw */
+ *dp = *sp;
+
+ /* advance source pointers */
+ sp += (*csax);
+ csax++;
+
+ /* advance destination pointer */
+ dp++;
+ }
+
+ /* advance source pointer (for row) */
+ csp += ((*csay) * src->pitch);
+ csay++;
+
+ /* advance destination pointers */
+ dp += dgap;
+ }
+
+ free(sax);
+ free(say);
+
+ return 0;
+}
+
+/*
+ -----------------------------------------------------------------------------
+ zoomSurface()
+
+ Zooms a 32bit or 8bit 'src' surface to newly created 'dst' surface.
+ 'zoomx' and 'zoomy' are scaling factors for width and height.
+ If the surface is not 8bit or 32bit RGBA/ABGR it will be converted
+ into a 32bit RGBA format on the fly.
+ -----------------------------------------------------------------------------
+*/
+
+SDL_Surface *zoomSurface(SDL_Surface *src, int dst_width, int dst_height)
+{
+ SDL_Surface *zoom_src = NULL;
+ SDL_Surface *zoom_dst = NULL;
+ boolean is_converted = FALSE;
+ boolean is_32bit;
+ int i;
+
+ if (src == NULL)
+ return NULL;
+
+ /* determine if source surface is 32 bit or 8 bit */
+ is_32bit = (src->format->BitsPerPixel == 32);
+
+ if (is_32bit || src->format->BitsPerPixel == 8)
+ {
+ /* use source surface 'as is' */
+ zoom_src = src;
+ }
+ else
+ {
+ /* new source surface is 32 bit with a defined RGB ordering */
+ zoom_src = SDL_CreateRGBSurface(SURFACE_FLAGS, src->w, src->h, 32,
+ 0x000000ff, 0x0000ff00, 0x00ff0000,
+ (src->format->Amask ? 0xff000000 : 0));
+ SDL_BlitSurface(src, NULL, zoom_src, NULL);
+ is_32bit = TRUE;
+ is_converted = TRUE;
+ }
+
+ /* allocate surface to completely contain the zoomed surface */
+ if (is_32bit)
+ {
+ /* target surface is 32 bit with source RGBA/ABGR ordering */
+ zoom_dst = SDL_CreateRGBSurface(SURFACE_FLAGS, dst_width, dst_height, 32,
+ zoom_src->format->Rmask,
+ zoom_src->format->Gmask,
+ zoom_src->format->Bmask,
+ zoom_src->format->Amask);
+ }
+ else
+ {
+ /* target surface is 8 bit */
+ zoom_dst = SDL_CreateRGBSurface(SURFACE_FLAGS, dst_width, dst_height, 8,
+ 0, 0, 0, 0);
+ }
+
+ /* lock source surface */
+ SDL_LockSurface(zoom_src);
+
+ /* check which kind of surface we have */
+ if (is_32bit)
+ {
+ /* call the 32 bit transformation routine to do the zooming */
+ zoomSurfaceRGBA(zoom_src, zoom_dst);
+ }
+ else
+ {
+ /* copy palette */
+ for (i = 0; i < zoom_src->format->palette->ncolors; i++)
+ zoom_dst->format->palette->colors[i] =
+ zoom_src->format->palette->colors[i];
+ zoom_dst->format->palette->ncolors = zoom_src->format->palette->ncolors;
+
+ /* call the 8 bit transformation routine to do the zooming */
+ zoomSurfaceY(zoom_src, zoom_dst);
+ }
+
+ /* unlock source surface */
+ SDL_UnlockSurface(zoom_src);
+
+ /* free temporary surface */
+ if (is_converted)
+ SDL_FreeSurface(zoom_src);
+
+ /* return destination surface */
+ return zoom_dst;
+}
+
+static SDL_Surface *SDLGetOpaqueSurface(SDL_Surface *surface)
+{
+ SDL_Surface *new_surface;
+
+ if (surface == NULL)
+ return NULL;
+
+ if ((new_surface = SDLGetNativeSurface(surface)) == NULL)
+ Error(ERR_EXIT, "SDLGetNativeSurface() failed");
+
+ /* remove alpha channel from native non-transparent surface, if defined */
+ SDLSetAlpha(new_surface, FALSE, 0);
+
+ /* remove transparent color from native non-transparent surface, if defined */
+ SDL_SetColorKey(new_surface, UNSET_TRANSPARENT_PIXEL, 0);
+
+ return new_surface;
+}
+
+Bitmap *SDLZoomBitmap(Bitmap *src_bitmap, int dst_width, int dst_height)
+{
+ Bitmap *dst_bitmap = CreateBitmapStruct();
+ SDL_Surface *src_surface = src_bitmap->surface_masked;
+ SDL_Surface *dst_surface;
+
+ dst_width = MAX(1, dst_width); /* prevent zero bitmap width */
+ dst_height = MAX(1, dst_height); /* prevent zero bitmap height */
+
+ dst_bitmap->width = dst_width;
+ dst_bitmap->height = dst_height;
+
+ /* create zoomed temporary surface from source surface */
+ dst_surface = zoomSurface(src_surface, dst_width, dst_height);
+
+ /* create native format destination surface from zoomed temporary surface */
+ SDLSetNativeSurface(&dst_surface);
+
+ /* set color key for zoomed surface from source surface, if defined */
+ if (SDLHasColorKey(src_surface))
+ SDL_SetColorKey(dst_surface, SET_TRANSPARENT_PIXEL,
+ SDLGetColorKey(src_surface));
+
+ /* create native non-transparent surface for opaque blitting */
+ dst_bitmap->surface = SDLGetOpaqueSurface(dst_surface);
+
+ /* set native transparent surface for masked blitting */
+ dst_bitmap->surface_masked = dst_surface;
+
+ return dst_bitmap;
+}
+
+
+/* ========================================================================= */
+/* load image to bitmap */
+/* ========================================================================= */
+
+Bitmap *SDLLoadImage(char *filename)
+{
+ Bitmap *new_bitmap = CreateBitmapStruct();
+ SDL_Surface *sdl_image_tmp;
+
+ if (program.headless)
+ {
+ /* prevent sanity check warnings at later stage */
+ new_bitmap->width = new_bitmap->height = 1;
+
+ return new_bitmap;
+ }
+
+ print_timestamp_init("SDLLoadImage");
+
+ print_timestamp_time(getBaseNamePtr(filename));
/* load image to temporary surface */
if ((sdl_image_tmp = IMG_Load(filename)) == NULL)
- {
- SetError("IMG_Load(): %s", SDL_GetError());
- return NULL;
- }
+ Error(ERR_EXIT, "IMG_Load() failed: %s", SDL_GetError());
+
+ print_timestamp_time("IMG_Load");
+
+ UPDATE_BUSY_STATE();
/* create native non-transparent surface for current image */
- if ((new_bitmap->surface = SDL_DisplayFormat(sdl_image_tmp)) == NULL)
- {
- SetError("SDL_DisplayFormat(): %s", SDL_GetError());
- return NULL;
- }
+ if ((new_bitmap->surface = SDLGetOpaqueSurface(sdl_image_tmp)) == NULL)
+ Error(ERR_EXIT, "SDLGetOpaqueSurface() failed");
+
+ print_timestamp_time("SDLGetNativeSurface (opaque)");
+
+ UPDATE_BUSY_STATE();
+
+ /* set black pixel to transparent if no alpha channel / transparent color */
+ if (!SDLHasAlpha(sdl_image_tmp) &&
+ !SDLHasColorKey(sdl_image_tmp))
+ SDL_SetColorKey(sdl_image_tmp, SET_TRANSPARENT_PIXEL,
+ SDL_MapRGB(sdl_image_tmp->format, 0x00, 0x00, 0x00));
/* create native transparent surface for current image */
- SDL_SetColorKey(sdl_image_tmp, SDL_SRCCOLORKEY,
- SDL_MapRGB(sdl_image_tmp->format, 0x00, 0x00, 0x00));
- if ((new_bitmap->surface_masked = SDL_DisplayFormat(sdl_image_tmp)) == NULL)
- {
- SetError("SDL_DisplayFormat(): %s", SDL_GetError());
- return NULL;
- }
+ if ((new_bitmap->surface_masked = SDLGetNativeSurface(sdl_image_tmp)) == NULL)
+ Error(ERR_EXIT, "SDLGetNativeSurface() failed");
+
+ print_timestamp_time("SDLGetNativeSurface (masked)");
+
+ UPDATE_BUSY_STATE();
/* free temporary surface */
SDL_FreeSurface(sdl_image_tmp);
new_bitmap->width = new_bitmap->surface->w;
new_bitmap->height = new_bitmap->surface->h;
+ print_timestamp_done("SDLLoadImage");
+
return new_bitmap;
}
+/* ------------------------------------------------------------------------- */
+/* custom cursor fuctions */
+/* ------------------------------------------------------------------------- */
+
+static SDL_Cursor *create_cursor(struct MouseCursorInfo *cursor_info)
+{
+ return SDL_CreateCursor(cursor_info->data, cursor_info->mask,
+ cursor_info->width, cursor_info->height,
+ cursor_info->hot_x, cursor_info->hot_y);
+}
+
+void SDLSetMouseCursor(struct MouseCursorInfo *cursor_info)
+{
+ static struct MouseCursorInfo *last_cursor_info = NULL;
+ static struct MouseCursorInfo *last_cursor_info2 = NULL;
+ static SDL_Cursor *cursor_default = NULL;
+ static SDL_Cursor *cursor_current = NULL;
+
+ /* if invoked for the first time, store the SDL default cursor */
+ if (cursor_default == NULL)
+ cursor_default = SDL_GetCursor();
+
+ /* only create new cursor if cursor info (custom only) has changed */
+ if (cursor_info != NULL && cursor_info != last_cursor_info)
+ {
+ cursor_current = create_cursor(cursor_info);
+ last_cursor_info = cursor_info;
+ }
+
+ /* only set new cursor if cursor info (custom or NULL) has changed */
+ if (cursor_info != last_cursor_info2)
+ SDL_SetCursor(cursor_info ? cursor_current : cursor_default);
+
+ last_cursor_info2 = cursor_info;
+}
+
+
/* ========================================================================= */
/* audio functions */
/* ========================================================================= */
-inline void SDLOpenAudio(void)
+void SDLOpenAudio(void)
{
+ if (program.headless)
+ return;
+
+#if !defined(TARGET_SDL2)
+ if (!strEqual(setup.system.sdl_audiodriver, ARG_DEFAULT))
+ SDL_putenv(getStringCat2("SDL_AUDIODRIVER=", setup.system.sdl_audiodriver));
+#endif
+
if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0)
{
Error(ERR_WARN, "SDL_InitSubSystem() failed: %s", SDL_GetError());
return;
}
- if (Mix_OpenAudio(DEFAULT_AUDIO_SAMPLE_RATE, AUDIO_S16,
+ if (Mix_OpenAudio(DEFAULT_AUDIO_SAMPLE_RATE, MIX_DEFAULT_FORMAT,
AUDIO_NUM_CHANNELS_STEREO,
- DEFAULT_AUDIO_FRAGMENT_SIZE) < 0)
+ setup.system.audio_fragment_size) < 0)
{
Error(ERR_WARN, "Mix_OpenAudio() failed: %s", SDL_GetError());
return;
audio.music_channel = MUSIC_CHANNEL;
audio.first_sound_channel = FIRST_SOUND_CHANNEL;
- /* reserve first channel for music loops */
- if (Mix_ReserveChannels(1) == 1)
- audio.music_channel = 0;
- else
- audio.music_available = FALSE;
-
- Mix_Volume(-1, SOUND_MAX_VOLUME);
- Mix_VolumeMusic(SOUND_MAX_VOLUME);
-
- InitPlaylist();
+ Mixer_InitChannels();
}
-inline void SDLCloseAudio(void)
+void SDLCloseAudio(void)
{
Mix_HaltMusic();
Mix_HaltChannel(-1);
/* event functions */
/* ========================================================================= */
-inline void SDLNextEvent(Event *event)
+void SDLWaitEvent(Event *event)
{
SDL_WaitEvent(event);
+}
-#ifdef FULLSCREEN_BUG
- if (event->type == EVENT_BUTTONPRESS ||
- event->type == EVENT_BUTTONRELEASE)
- {
- if (((ButtonEvent *)event)->x > video_xoffset)
- ((ButtonEvent *)event)->x -= video_xoffset;
- else
- ((ButtonEvent *)event)->x = 0;
- if (((ButtonEvent *)event)->y > video_yoffset)
- ((ButtonEvent *)event)->y -= video_yoffset;
- else
- ((ButtonEvent *)event)->y = 0;
- }
- else if (event->type == EVENT_MOTIONNOTIFY)
+void SDLHandleWindowManagerEvent(Event *event)
+{
+#ifdef DEBUG
+#if defined(PLATFORM_WIN32)
+ // experimental drag and drop code
+
+ SDL_SysWMEvent *syswmevent = (SDL_SysWMEvent *)event;
+ SDL_SysWMmsg *syswmmsg = (SDL_SysWMmsg *)(syswmevent->msg);
+
+#if defined(TARGET_SDL2)
+ if (syswmmsg->msg.win.msg == WM_DROPFILES)
+#else
+ if (syswmmsg->msg == WM_DROPFILES)
+#endif
{
- if (((ButtonEvent *)event)->x > video_xoffset)
- ((ButtonEvent *)event)->x -= video_xoffset;
- else
- ((ButtonEvent *)event)->x = 0;
- if (((ButtonEvent *)event)->y > video_yoffset)
- ((ButtonEvent *)event)->y -= video_yoffset;
- else
- ((ButtonEvent *)event)->y = 0;
+#if defined(TARGET_SDL2)
+ HDROP hdrop = (HDROP)syswmmsg->msg.win.wParam;
+#else
+ HDROP hdrop = (HDROP)syswmmsg->wParam;
+#endif
+ int i, num_files;
+
+ printf("::: SDL_SYSWMEVENT:\n");
+
+ num_files = DragQueryFile(hdrop, 0xffffffff, NULL, 0);
+
+ for (i = 0; i < num_files; i++)
+ {
+ int buffer_len = DragQueryFile(hdrop, i, NULL, 0);
+ char buffer[buffer_len + 1];
+
+ DragQueryFile(hdrop, i, buffer, buffer_len + 1);
+
+ printf("::: - '%s'\n", buffer);
+ }
+
+#if defined(TARGET_SDL2)
+ DragFinish((HDROP)syswmmsg->msg.win.wParam);
+#else
+ DragFinish((HDROP)syswmmsg->wParam);
+#endif
}
#endif
+#endif
}
/* joystick functions */
/* ========================================================================= */
-static SDL_Joystick *sdl_joystick[MAX_PLAYERS] = { NULL, NULL, NULL, NULL };
-static int sdl_js_axis[MAX_PLAYERS][2] = { {0, 0}, {0, 0}, {0, 0}, {0, 0} };
-static int sdl_js_button[MAX_PLAYERS][2] = { {0, 0}, {0, 0}, {0, 0}, {0, 0} };
+#if defined(TARGET_SDL2)
+static void *sdl_joystick[MAX_PLAYERS]; // game controller or joystick
+#else
+static SDL_Joystick *sdl_joystick[MAX_PLAYERS]; // only joysticks supported
+#endif
+static int sdl_js_axis_raw[MAX_PLAYERS][2];
+static int sdl_js_axis[MAX_PLAYERS][2];
+static int sdl_js_button[MAX_PLAYERS][2];
+static boolean sdl_is_controller[MAX_PLAYERS];
+
+void SDLClearJoystickState()
+{
+ int i, j;
+
+ for (i = 0; i < MAX_PLAYERS; i++)
+ {
+ for (j = 0; j < 2; j++)
+ {
+ sdl_js_axis_raw[i][j] = -1;
+ sdl_js_axis[i][j] = 0;
+ sdl_js_button[i][j] = 0;
+ }
+ }
+}
-static boolean SDLOpenJoystick(int nr)
+boolean SDLOpenJoystick(int nr)
{
- if (nr < 0 || nr > MAX_PLAYERS)
+ if (nr < 0 || nr >= MAX_PLAYERS)
return FALSE;
- return ((sdl_joystick[nr] = SDL_JoystickOpen(nr)) == NULL ? FALSE : TRUE);
+#if defined(TARGET_SDL2)
+ sdl_is_controller[nr] = SDL_IsGameController(nr);
+#else
+ sdl_is_controller[nr] = FALSE;
+#endif
+
+#if DEBUG_JOYSTICKS
+ Error(ERR_DEBUG, "opening joystick %d (%s)",
+ nr, (sdl_is_controller[nr] ? "game controller" : "joystick"));
+#endif
+
+#if defined(TARGET_SDL2)
+ if (sdl_is_controller[nr])
+ sdl_joystick[nr] = SDL_GameControllerOpen(nr);
+ else
+ sdl_joystick[nr] = SDL_JoystickOpen(nr);
+#else
+ sdl_joystick[nr] = SDL_JoystickOpen(nr);
+#endif
+
+ return (sdl_joystick[nr] != NULL);
}
-static void SDLCloseJoystick(int nr)
+void SDLCloseJoystick(int nr)
{
- if (nr < 0 || nr > MAX_PLAYERS)
+ if (nr < 0 || nr >= MAX_PLAYERS)
return;
+#if DEBUG_JOYSTICKS
+ Error(ERR_DEBUG, "closing joystick %d", nr);
+#endif
+
+#if defined(TARGET_SDL2)
+ if (sdl_is_controller[nr])
+ SDL_GameControllerClose(sdl_joystick[nr]);
+ else
+ SDL_JoystickClose(sdl_joystick[nr]);
+#else
SDL_JoystickClose(sdl_joystick[nr]);
+#endif
+
+ sdl_joystick[nr] = NULL;
}
-static boolean SDLCheckJoystickOpened(int nr)
+boolean SDLCheckJoystickOpened(int nr)
{
- if (nr < 0 || nr > MAX_PLAYERS)
+ if (nr < 0 || nr >= MAX_PLAYERS)
return FALSE;
+#if defined(TARGET_SDL2)
+ return (sdl_joystick[nr] != NULL ? TRUE : FALSE);
+#else
return (SDL_JoystickOpened(nr) ? TRUE : FALSE);
+#endif
+}
+
+static void setJoystickAxis(int nr, int axis_id_raw, int axis_value)
+{
+#if defined(TARGET_SDL2)
+ int axis_id = (axis_id_raw == SDL_CONTROLLER_AXIS_LEFTX ||
+ axis_id_raw == SDL_CONTROLLER_AXIS_RIGHTX ? 0 :
+ axis_id_raw == SDL_CONTROLLER_AXIS_LEFTY ||
+ axis_id_raw == SDL_CONTROLLER_AXIS_RIGHTY ? 1 : -1);
+#else
+ int axis_id = axis_id_raw % 2;
+#endif
+
+ if (nr < 0 || nr >= MAX_PLAYERS)
+ return;
+
+ if (axis_id == -1)
+ return;
+
+ // prevent (slightly jittering, but centered) axis A from resetting axis B
+ if (ABS(axis_value) < JOYSTICK_PERCENT * JOYSTICK_MAX_AXIS_POS / 100 &&
+ axis_id_raw != sdl_js_axis_raw[nr][axis_id])
+ return;
+
+ sdl_js_axis[nr][axis_id] = axis_value;
+ sdl_js_axis_raw[nr][axis_id] = axis_id_raw;
+}
+
+static void setJoystickButton(int nr, int button_id_raw, int button_state)
+{
+#if defined(TARGET_SDL2)
+ int button_id = (button_id_raw == SDL_CONTROLLER_BUTTON_A ||
+ button_id_raw == SDL_CONTROLLER_BUTTON_X ||
+ button_id_raw == SDL_CONTROLLER_BUTTON_LEFTSHOULDER ||
+ button_id_raw == SDL_CONTROLLER_BUTTON_LEFTSTICK ||
+ button_id_raw == SDL_CONTROLLER_BUTTON_RIGHTSTICK ? 0 :
+ button_id_raw == SDL_CONTROLLER_BUTTON_B ||
+ button_id_raw == SDL_CONTROLLER_BUTTON_Y ||
+ button_id_raw == SDL_CONTROLLER_BUTTON_RIGHTSHOULDER ? 1 :
+ -1);
+
+ if (button_id_raw == SDL_CONTROLLER_BUTTON_DPAD_LEFT)
+ sdl_js_axis[nr][0] = button_state * JOYSTICK_XLEFT;
+ else if (button_id_raw == SDL_CONTROLLER_BUTTON_DPAD_RIGHT)
+ sdl_js_axis[nr][0] = button_state * JOYSTICK_XRIGHT;
+ else if (button_id_raw == SDL_CONTROLLER_BUTTON_DPAD_UP)
+ sdl_js_axis[nr][1] = button_state * JOYSTICK_YUPPER;
+ else if (button_id_raw == SDL_CONTROLLER_BUTTON_DPAD_DOWN)
+ sdl_js_axis[nr][1] = button_state * JOYSTICK_YLOWER;
+
+ if (button_id_raw == SDL_CONTROLLER_BUTTON_DPAD_LEFT ||
+ button_id_raw == SDL_CONTROLLER_BUTTON_DPAD_RIGHT ||
+ button_id_raw == SDL_CONTROLLER_BUTTON_DPAD_UP ||
+ button_id_raw == SDL_CONTROLLER_BUTTON_DPAD_DOWN)
+ sdl_js_axis_raw[nr][0] = sdl_js_axis_raw[nr][1] = -1;
+#else
+ int button_id = button_id_raw % 2;
+#endif
+
+ if (nr < 0 || nr >= MAX_PLAYERS)
+ return;
+
+ if (button_id == -1)
+ return;
+
+ sdl_js_button[nr][button_id] = button_state;
}
void HandleJoystickEvent(Event *event)
{
switch(event->type)
{
+#if defined(TARGET_SDL2)
+ case SDL_CONTROLLERDEVICEADDED:
+#if DEBUG_JOYSTICKS
+ Error(ERR_DEBUG, "SDL_CONTROLLERDEVICEADDED: device %d added",
+ event->cdevice.which);
+#endif
+ InitJoysticks();
+ break;
+
+ case SDL_CONTROLLERDEVICEREMOVED:
+#if DEBUG_JOYSTICKS
+ Error(ERR_DEBUG, "SDL_CONTROLLERDEVICEREMOVED: device %d removed",
+ event->cdevice.which);
+#endif
+ InitJoysticks();
+ break;
+
+ case SDL_CONTROLLERAXISMOTION:
+#if DEBUG_JOYSTICKS
+ Error(ERR_DEBUG, "SDL_CONTROLLERAXISMOTION: device %d, axis %d: %d",
+ event->caxis.which, event->caxis.axis, event->caxis.value);
+#endif
+ setJoystickAxis(event->caxis.which,
+ event->caxis.axis,
+ event->caxis.value);
+ break;
+
+ case SDL_CONTROLLERBUTTONDOWN:
+#if DEBUG_JOYSTICKS
+ Error(ERR_DEBUG, "SDL_CONTROLLERBUTTONDOWN: device %d, button %d",
+ event->cbutton.which, event->cbutton.button);
+#endif
+ setJoystickButton(event->cbutton.which,
+ event->cbutton.button,
+ TRUE);
+ break;
+
+ case SDL_CONTROLLERBUTTONUP:
+#if DEBUG_JOYSTICKS
+ Error(ERR_DEBUG, "SDL_CONTROLLERBUTTONUP: device %d, button %d",
+ event->cbutton.which, event->cbutton.button);
+#endif
+ setJoystickButton(event->cbutton.which,
+ event->cbutton.button,
+ FALSE);
+ break;
+#endif
+
case SDL_JOYAXISMOTION:
- if (event->jaxis.axis < 2)
- sdl_js_axis[event->jaxis.which][event->jaxis.axis]= event->jaxis.value;
+ if (sdl_is_controller[event->jaxis.which])
+ break;
+
+#if DEBUG_JOYSTICKS
+ Error(ERR_DEBUG, "SDL_JOYAXISMOTION: device %d, axis %d: %d",
+ event->jaxis.which, event->jaxis.axis, event->jaxis.value);
+#endif
+ if (event->jaxis.axis < 4)
+ setJoystickAxis(event->jaxis.which,
+ event->jaxis.axis,
+ event->jaxis.value);
break;
case SDL_JOYBUTTONDOWN:
- if (event->jbutton.button < 2)
- sdl_js_button[event->jbutton.which][event->jbutton.button] = TRUE;
+ if (sdl_is_controller[event->jaxis.which])
+ break;
+
+#if DEBUG_JOYSTICKS
+ Error(ERR_DEBUG, "SDL_JOYBUTTONDOWN: device %d, button %d",
+ event->jbutton.which, event->jbutton.button);
+#endif
+ if (event->jbutton.button < 4)
+ setJoystickButton(event->jbutton.which,
+ event->jbutton.button,
+ TRUE);
break;
case SDL_JOYBUTTONUP:
- if (event->jbutton.button < 2)
- sdl_js_button[event->jbutton.which][event->jbutton.button] = FALSE;
+ if (sdl_is_controller[event->jaxis.which])
+ break;
+
+#if DEBUG_JOYSTICKS
+ Error(ERR_DEBUG, "SDL_JOYBUTTONUP: device %d, button %d",
+ event->jbutton.which, event->jbutton.button);
+#endif
+ if (event->jbutton.button < 4)
+ setJoystickButton(event->jbutton.which,
+ event->jbutton.button,
+ FALSE);
break;
default:
void SDLInitJoysticks()
{
static boolean sdl_joystick_subsystem_initialized = FALSE;
+ boolean print_warning = !sdl_joystick_subsystem_initialized;
+#if defined(TARGET_SDL2)
+ char *mappings_file_base = getPath2(options.conf_directory,
+ GAMECONTROLLER_BASENAME);
+ char *mappings_file_user = getPath2(getUserGameDataDir(),
+ GAMECONTROLLER_BASENAME);
+ int num_mappings;
+#endif
int i;
if (!sdl_joystick_subsystem_initialized)
{
sdl_joystick_subsystem_initialized = TRUE;
- if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
+#if defined(TARGET_SDL2)
+ SDL_SetHint(SDL_HINT_ACCELEROMETER_AS_JOYSTICK, "0");
+
+ if (SDL_InitSubSystem(SDL_INIT_GAMECONTROLLER) < 0)
+#else
+ if (SDL_InitSubSystem(SDL_INIT_JOYSTICK) < 0)
+#endif
{
Error(ERR_EXIT, "SDL_Init() failed: %s", SDL_GetError());
return;
}
+
+#if defined(TARGET_SDL2)
+ num_mappings = SDL_GameControllerAddMappingsFromFile(mappings_file_base);
+
+ /* the included game controller base mappings should always be found */
+ if (num_mappings == -1)
+ Error(ERR_WARN, "no game controller base mappings found");
+#if DEBUG_JOYSTICKS
+ else
+ Error(ERR_INFO, "%d game controller base mapping(s) added", num_mappings);
+#endif
+
+ num_mappings = SDL_GameControllerAddMappingsFromFile(mappings_file_user);
+
+#if DEBUG_JOYSTICKS
+ /* the personal game controller user mappings may or may not be found */
+ if (num_mappings == -1)
+ Error(ERR_WARN, "no game controller user mappings found");
+ else
+ Error(ERR_INFO, "%d game controller user mapping(s) added", num_mappings);
+
+ Error(ERR_INFO, "%d joystick(s) found:", SDL_NumJoysticks());
+#endif
+
+ checked_free(mappings_file_base);
+ checked_free(mappings_file_user);
+
+#if DEBUG_JOYSTICKS
+ for (i = 0; i < SDL_NumJoysticks(); i++)
+ {
+ const char *name, *type;
+
+ if (SDL_IsGameController(i))
+ {
+ name = SDL_GameControllerNameForIndex(i);
+ type = "game controller";
+ }
+ else
+ {
+ name = SDL_JoystickNameForIndex(i);
+ type = "joystick";
+ }
+
+ Error(ERR_INFO, "- joystick %d (%s): '%s'",
+ i, type, (name ? name : "(Unknown)"));
+ }
+#endif
+#endif
}
- for (i=0; i<MAX_PLAYERS; i++)
+ /* assign joysticks from configured to connected joystick for all players */
+ for (i = 0; i < MAX_PLAYERS; i++)
{
+ /* get configured joystick for this player */
char *device_name = setup.input[i].joy.device_name;
int joystick_nr = getJoystickNrFromDeviceName(device_name);
if (joystick_nr >= SDL_NumJoysticks())
+ {
+ if (setup.input[i].use_joystick && print_warning)
+ Error(ERR_WARN, "cannot find joystick %d", joystick_nr);
+
joystick_nr = -1;
+ }
- /* misuse joystick file descriptor variable to store joystick number */
- joystick.fd[i] = joystick_nr;
+ /* store configured joystick number for each player */
+ joystick.nr[i] = joystick_nr;
+ }
+ /* now open all connected joysticks (regardless if configured or not) */
+ for (i = 0; i < SDL_NumJoysticks(); i++)
+ {
/* this allows subsequent calls to 'InitJoysticks' for re-initialization */
- if (SDLCheckJoystickOpened(joystick_nr))
- SDLCloseJoystick(joystick_nr);
-
- if (!setup.input[i].use_joystick)
- continue;
-
- if (!SDLOpenJoystick(joystick_nr))
- {
- Error(ERR_WARN, "cannot open joystick %d", joystick_nr);
- continue;
- }
+ if (SDLCheckJoystickOpened(i))
+ SDLCloseJoystick(i);
- joystick.status = JOYSTICK_ACTIVATED;
+ if (SDLOpenJoystick(i))
+ joystick.status = JOYSTICK_ACTIVATED;
+ else if (print_warning)
+ Error(ERR_WARN, "cannot open joystick %d", i);
}
+
+ SDLClearJoystickState();
}
boolean SDLReadJoystick(int nr, int *x, int *y, boolean *b1, boolean *b2)
return TRUE;
}
-#endif /* TARGET_SDL */
+
+/* ========================================================================= */
+/* touch input overlay functions */
+/* ========================================================================= */
+
+#if defined(USE_TOUCH_INPUT_OVERLAY)
+static void DrawTouchInputOverlay_ShowGrid(int alpha)
+{
+ SDL_Rect rect;
+ int grid_xsize = overlay.grid_xsize;
+ int grid_ysize = overlay.grid_ysize;
+ int x, y;
+
+ SDL_SetRenderDrawColor(sdl_renderer, 255, 255, 255, alpha);
+ SDL_SetRenderDrawBlendMode(sdl_renderer, SDL_BLENDMODE_BLEND);
+
+ for (x = 0; x < grid_xsize; x++)
+ {
+ rect.x = (x + 0) * video.screen_width / grid_xsize;
+ rect.w = (x + 1) * video.screen_width / grid_xsize - rect.x;
+
+ for (y = 0; y < grid_ysize; y++)
+ {
+ rect.y = (y + 0) * video.screen_height / grid_ysize;
+ rect.h = (y + 1) * video.screen_height / grid_ysize - rect.y;
+
+ if (overlay.grid_button[x][y] == CHAR_GRID_BUTTON_NONE)
+ SDL_RenderDrawRect(sdl_renderer, &rect);
+ }
+ }
+
+ SDL_SetRenderDrawColor(sdl_renderer, 0, 0, 0, 255);
+}
+
+static void DrawTouchInputOverlay_ShowGridButtons(int alpha)
+{
+ static int alpha_max = SDL_ALPHA_OPAQUE / 2;
+ static int alpha_step = 5;
+ static int alpha_direction = 0;
+ static int alpha_highlight = 0;
+ SDL_Rect rect;
+ int grid_xsize = overlay.grid_xsize;
+ int grid_ysize = overlay.grid_ysize;
+ int x, y;
+
+ if (alpha == alpha_max)
+ {
+ if (alpha_direction < 0)
+ {
+ alpha_highlight = MAX(0, alpha_highlight - alpha_step);
+
+ if (alpha_highlight == 0)
+ alpha_direction = 1;
+ }
+ else
+ {
+ alpha_highlight = MIN(alpha_highlight + alpha_step, alpha_max);
+
+ if (alpha_highlight == alpha_max)
+ alpha_direction = -1;
+ }
+ }
+ else
+ {
+ alpha_direction = 1;
+ alpha_highlight = alpha;
+ }
+
+ SDL_SetRenderDrawBlendMode(sdl_renderer, SDL_BLENDMODE_BLEND);
+
+ for (x = 0; x < grid_xsize; x++)
+ {
+ rect.x = (x + 0) * video.screen_width / grid_xsize;
+ rect.w = (x + 1) * video.screen_width / grid_xsize - rect.x;
+
+ for (y = 0; y < grid_ysize; y++)
+ {
+ rect.y = (y + 0) * video.screen_height / grid_ysize;
+ rect.h = (y + 1) * video.screen_height / grid_ysize - rect.y;
+
+ if (overlay.grid_button[x][y] == overlay.grid_button_highlight)
+ SDL_SetRenderDrawColor(sdl_renderer, 255, 255, 255, alpha_highlight);
+ else
+ SDL_SetRenderDrawColor(sdl_renderer, 255, 255, 255, alpha);
+
+ if (overlay.grid_button[x][y] != CHAR_GRID_BUTTON_NONE)
+ SDL_RenderFillRect(sdl_renderer, &rect);
+ }
+ }
+
+ SDL_SetRenderDrawColor(sdl_renderer, 0, 0, 0, 255);
+}
+
+static void DrawTouchInputOverlay()
+{
+ static SDL_Texture *texture = NULL;
+ static boolean initialized = FALSE;
+ static boolean deactivated = TRUE;
+ static boolean show_grid = FALSE;
+ static boolean show_grid_buttons = FALSE;
+ static int width = 0, height = 0;
+ static int alpha_max = SDL_ALPHA_OPAQUE / 2;
+ static int alpha_step = 5;
+ static int alpha_last = -1;
+ static int alpha = 0;
+ boolean active = (overlay.enabled && overlay.active);
+
+ if (!active && deactivated)
+ return;
+
+ if (active)
+ {
+ if (alpha < alpha_max)
+ alpha = MIN(alpha + alpha_step, alpha_max);
+
+ deactivated = FALSE;
+ }
+ else
+ {
+ alpha = MAX(0, alpha - alpha_step);
+
+ if (alpha == 0)
+ deactivated = TRUE;
+ }
+
+ if (overlay.show_grid)
+ show_grid = TRUE;
+ else if (deactivated)
+ show_grid = FALSE;
+
+ if (overlay.show_grid_buttons)
+ show_grid_buttons = TRUE;
+ else if (deactivated)
+ show_grid_buttons = FALSE;
+
+ if (show_grid)
+ DrawTouchInputOverlay_ShowGrid(alpha);
+
+ if (show_grid_buttons)
+ DrawTouchInputOverlay_ShowGridButtons(alpha);
+
+ if (show_grid || show_grid_buttons)
+ return;
+
+ if (!initialized)
+ {
+ char *basename = "overlay/VirtualButtons.png";
+ char *filename = getCustomImageFilename(basename);
+
+ if (filename == NULL)
+ Error(ERR_EXIT, "LoadCustomImage(): cannot find file '%s'", basename);
+
+ SDL_Surface *surface;
+
+ if ((surface = IMG_Load(filename)) == NULL)
+ Error(ERR_EXIT, "IMG_Load() failed: %s", SDL_GetError());
+
+ width = surface->w;
+ height = surface->h;
+
+ /* set black pixel to transparent if no alpha channel / transparent color */
+ if (!SDLHasAlpha(surface) &&
+ !SDLHasColorKey(surface))
+ SDL_SetColorKey(surface, SET_TRANSPARENT_PIXEL,
+ SDL_MapRGB(surface->format, 0x00, 0x00, 0x00));
+
+ if ((texture = SDLCreateTextureFromSurface(surface)) == NULL)
+ Error(ERR_EXIT, "SDLCreateTextureFromSurface() failed");
+
+ SDL_FreeSurface(surface);
+
+ SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
+
+ initialized = TRUE;
+ }
+
+ if (alpha != alpha_last)
+ SDL_SetTextureAlphaMod(texture, alpha);
+
+ alpha_last = alpha;
+
+ float ratio_overlay = (float) width / height;
+ float ratio_screen = (float) video.screen_width / video.screen_height;
+ int width_scaled, height_scaled;
+ int xpos, ypos;
+
+ if (ratio_overlay > ratio_screen)
+ {
+ width_scaled = video.screen_width;
+ height_scaled = video.screen_height * ratio_screen / ratio_overlay;
+ xpos = 0;
+ ypos = video.screen_height - height_scaled;
+ }
+ else
+ {
+ width_scaled = video.screen_width * ratio_overlay / ratio_screen;
+ height_scaled = video.screen_height;
+ xpos = (video.screen_width - width_scaled) / 2;
+ ypos = 0;
+ }
+
+ SDL_Rect src_rect = { 0, 0, width, height };
+ SDL_Rect dst_rect = { xpos, ypos, width_scaled, height_scaled };
+
+ SDL_RenderCopy(sdl_renderer, texture, &src_rect, &dst_rect);
+}
+#endif