Mercurial > sdl-ios-xcode
view src/video/SDL_blendrect.c @ 2893:e67f3f3bf221
Turn on line antialiasing (requires blending to be enabled)
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sat, 20 Dec 2008 18:40:30 +0000 |
parents | 32e8bbba1e94 |
children | 1ef2f1e75ff7 |
line wrap: on
line source
/* 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: */