X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Flibgame%2Fsdl.c;h=182126f121f04fa855e4858b07600602e740f9f0;hb=d0ab5a10ecda925e8fd5641aef3fdd9e035492f8;hp=3ab03783ba16a33a1da73c7c76362b368118368b;hpb=8390d74131ba7877a1e993e38da227c1336e6a10;p=rocksndiamonds.git

diff --git a/src/libgame/sdl.c b/src/libgame/sdl.c
index 3ab03783..182126f1 100644
--- a/src/libgame/sdl.c
+++ b/src/libgame/sdl.c
@@ -54,6 +54,7 @@ static void UpdateScreen(SDL_Rect *rect)
 {
   static unsigned int update_screen_delay = 0;
   unsigned int update_screen_delay_value = 20;		/* (milliseconds) */
+  SDL_Surface *screen = backbuffer->surface;
 
   if (limit_screen_updates &&
       !DelayReached(&update_screen_delay, update_screen_delay_value))
@@ -78,10 +79,29 @@ static void UpdateScreen(SDL_Rect *rect)
   }
 #endif
 
+#if USE_FINAL_SCREEN_BITMAP
+  if (gfx.final_screen_bitmap != NULL)	// may not be initialized yet
+  {
+    // !!! TEST !!!
+    // 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);
+
+    // copy global animations to render target buffer, if defined
+    if (gfx.draw_global_anim_function != NULL)
+      gfx.draw_global_anim_function();
+
+    screen = gfx.final_screen_bitmap->surface;
+
+    // force full window redraw
+    rect = NULL;
+  }
+#endif
+
 #if defined(TARGET_SDL2)
 #if USE_RENDERER
-  SDL_Surface *screen = backbuffer->surface;
-
   if (rect)
   {
     int bytes_x = screen->pitch / video.width;
@@ -98,10 +118,24 @@ static void UpdateScreen(SDL_Rect *rect)
   {
     SDL_UpdateTexture(sdl_texture, NULL, screen->pixels, screen->pitch);
   }
+
+  // clear render target buffer
   SDL_RenderClear(sdl_renderer);
+
+  // copy backbuffer to render target buffer
   SDL_RenderCopy(sdl_renderer, sdl_texture, NULL, NULL);
+
+#if !USE_FINAL_SCREEN_BITMAP
+  // copy global animations to render target buffer, if defined
+  if (gfx.draw_global_anim_function != NULL)
+    gfx.draw_global_anim_function();
+#endif
+
+  // show render target buffer on screen
   SDL_RenderPresent(sdl_renderer);
+
 #else
+
   if (rect)
     SDL_UpdateWindowSurfaceRects(sdl_window, rect, 1);
   else
@@ -286,6 +320,35 @@ SDL_Surface *SDLGetNativeSurface(SDL_Surface *surface)
 
 #endif
 
+#if defined(TARGET_SDL2)
+static SDL_Texture *SDLCreateTextureFromSurface(SDL_Surface *surface)
+{
+  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 SDLInitVideoDisplay(void)
 {
 #if !defined(TARGET_SDL2)
@@ -871,8 +934,19 @@ void SDLFreeBitmapPointers(Bitmap *bitmap)
     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,
@@ -926,6 +1000,37 @@ void SDLCopyArea(Bitmap *src_bitmap, Bitmap *dst_bitmap,
 #endif
 }
 
+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)
+#if USE_RENDERER
+  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
+#endif
+}
+
 void SDLFillRectangle(Bitmap *dst_bitmap, int x, int y, int width, int height,
 		      Uint32 color)
 {