Mercurial > sdl-ios-xcode
diff src/video/SDL_drawpoint.c @ 2901:133601e3b255
Added RenderPiont() API
Merged the drawing tests into a single test program
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 21 Dec 2008 17:39:41 +0000 |
parents | |
children | 210e209b87cc |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/video/SDL_drawpoint.c Sun Dec 21 17:39:41 2008 +0000 @@ -0,0 +1,60 @@ +/* + 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_draw.h" + + +int +SDL_DrawPoint(SDL_Surface * dst, int x, int y, Uint32 color) +{ + /* This function doesn't work on surfaces < 8 bpp */ + if (dst->format->BitsPerPixel < 8) { + SDL_SetError("SDL_DrawLine(): Unsupported surface format"); + return (-1); + } + + /* Perform clipping */ + if (x < dst->clip_rect.x || y < dst->clip_rect.y || + x >= (dst->clip_rect.x + dst->clip_rect.w) || + y >= (dst->clip_rect.y + dst->clip_rect.h)) { + return 0; + } + + switch (dst->format->BytesPerPixel) { + case 1: + DRAW_FASTSETPIXEL1(x, y); + break; + case 2: + DRAW_FASTSETPIXEL2(x, y); + break; + case 3: + SDL_Unsupported(); + return -1; + case 4: + DRAW_FASTSETPIXEL4(x, y); + break; + } + return 0; +} + +/* vi: set ts=4 sw=4 expandtab: */