+#if defined(TARGET_SDL2)
+#define KMOD_TextInput (KMOD_Shift | KMOD_Alt_R)
+#endif
+
+/* SDL function definitions */
+
+boolean SDLSetNativeSurface(SDL_Surface **);
+SDL_Surface *SDLGetNativeSurface(SDL_Surface *);
+void SDLCreateBitmapTextures(Bitmap *);
+void SDLFreeBitmapTextures(Bitmap *);
+
+#if defined(TARGET_SDL2)
+SDL_Surface *SDL_DisplayFormat(SDL_Surface *);
+void SDLSetWindowScaling(int);
+void SDLSetWindowScalingQuality(char *);
+void SDLSetWindowFullscreen(boolean);
+void SDLSetDisplaySize(void);
+void SDLSetScreenSizeAndOffsets(int, int);
+void SDLSetScreenSizeForRenderer(int, int);
+void SDLSetScreenProperties(void);
+#endif
+
+void SDLSetScreenRenderingMode(char *);
+void SDLRedrawWindow();
+void SDLSetWindowTitle(void);
+
+void SDLLimitScreenUpdates(boolean);
+void SDLInitVideoDisplay(void);
+void SDLInitVideoBuffer(boolean);
+boolean SDLSetVideoMode(boolean);
+void SDLCreateBitmapContent(Bitmap *, int, int, int);
+void SDLFreeBitmapPointers(Bitmap *);
+void SDLCopyArea(Bitmap *, Bitmap *, int, int, int, int, int, int, int);
+void SDLBlitTexture(Bitmap *, int, int, int, int, int, int, int);
+void SDLFillRectangle(Bitmap *, int, int, int, int, Uint32);
+void SDLFadeRectangle(int, int, int, int, int, int, int,
+ void (*draw_border_function)(void));
+void SDLDrawSimpleLine(Bitmap *, int, int, int, int, Uint32);
+void SDLDrawLine(Bitmap *, int, int, int, int, Uint32);
+Pixel SDLGetPixel(Bitmap *, int, int);
+void SDLPutPixel(Bitmap *, int, int, Pixel);
+
+void SDLInvertArea(Bitmap *, int, int, int, int, Uint32);
+void SDLCopyInverseMasked(Bitmap *, Bitmap *, int, int, int, int, int, int);
+
+Bitmap *SDLZoomBitmap(Bitmap *, int, int);