Mercurial > sdl-ios-xcode
diff src/video/SDL_blendrect.c @ 2888:32e8bbba1e94
Added stubs for software implementations of blending fills and line drawing
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sat, 20 Dec 2008 13:14:28 +0000 |
parents | |
children | 1ef2f1e75ff7 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/video/SDL_blendrect.c Sat Dec 20 13:14:28 2008 +0000 @@ -0,0 +1,52 @@ +/* + 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" + +#include "SDL_video.h" +#include "SDL_blit.h" + + +int +SDL_BlendRect(SDL_Surface * dst, SDL_Rect * dstrect, int blendMode, Uint8 r, + Uint8 g, Uint8 b, Uint8 a) +{ + /* This function doesn't work on surfaces < 8 bpp */ + if (dst->format->BitsPerPixel < 8) { + SDL_SetError("SDL_BlendRect(): Unsupported surface format"); + return (-1); + } + + /* If 'dstrect' == NULL, then fill the whole surface */ + if (dstrect) { + /* Perform clipping */ + if (!SDL_IntersectRect(dstrect, &dst->clip_rect, dstrect)) { + return (0); + } + } else { + dstrect = &dst->clip_rect; + } + + SDL_Unsupported(); + return -1; +} + +/* vi: set ts=4 sw=4 expandtab: */