53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#include "SDL_video.h"
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#include "SDL_blit.h"
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int
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SDL_BlendRect(SDL_Surface * dst, SDL_Rect * dstrect, int blendMode, Uint8 r,
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Uint8 g, Uint8 b, Uint8 a)
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{
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/* This function doesn't work on surfaces < 8 bpp */
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if (dst->format->BitsPerPixel < 8) {
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SDL_SetError("SDL_BlendRect(): Unsupported surface format");
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return (-1);
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}
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/* If 'dstrect' == NULL, then fill the whole surface */
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if (dstrect) {
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/* Perform clipping */
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if (!SDL_IntersectRect(dstrect, &dst->clip_rect, dstrect)) {
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return (0);
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}
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} else {
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dstrect = &dst->clip_rect;
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}
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SDL_Unsupported();
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return -1;
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}
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/* vi: set ts=4 sw=4 expandtab: */
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