|
2901
|
1 /*
|
|
|
2 SDL - Simple DirectMedia Layer
|
|
|
3 Copyright (C) 1997-2009 Sam Lantinga
|
|
|
4
|
|
|
5 This library is free software; you can redistribute it and/or
|
|
|
6 modify it under the terms of the GNU Lesser General Public
|
|
|
7 License as published by the Free Software Foundation; either
|
|
|
8 version 2.1 of the License, or (at your option) any later version.
|
|
|
9
|
|
|
10 This library is distributed in the hope that it will be useful,
|
|
|
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
13 Lesser General Public License for more details.
|
|
|
14
|
|
|
15 You should have received a copy of the GNU Lesser General Public
|
|
|
16 License along with this library; if not, write to the Free Software
|
|
|
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
18
|
|
|
19 Sam Lantinga
|
|
|
20 slouken@libsdl.org
|
|
|
21 */
|
|
|
22 #include "SDL_config.h"
|
|
|
23
|
|
|
24 #include "SDL_draw.h"
|
|
|
25
|
|
|
26
|
|
|
27 int
|
|
|
28 SDL_DrawPoint(SDL_Surface * dst, int x, int y, Uint32 color)
|
|
|
29 {
|
|
|
30 /* This function doesn't work on surfaces < 8 bpp */
|
|
|
31 if (dst->format->BitsPerPixel < 8) {
|
|
|
32 SDL_SetError("SDL_DrawLine(): Unsupported surface format");
|
|
|
33 return (-1);
|
|
|
34 }
|
|
|
35
|
|
|
36 /* Perform clipping */
|
|
|
37 if (x < dst->clip_rect.x || y < dst->clip_rect.y ||
|
|
|
38 x >= (dst->clip_rect.x + dst->clip_rect.w) ||
|
|
|
39 y >= (dst->clip_rect.y + dst->clip_rect.h)) {
|
|
|
40 return 0;
|
|
|
41 }
|
|
|
42
|
|
|
43 switch (dst->format->BytesPerPixel) {
|
|
|
44 case 1:
|
|
|
45 DRAW_FASTSETPIXEL1(x, y);
|
|
|
46 break;
|
|
|
47 case 2:
|
|
|
48 DRAW_FASTSETPIXEL2(x, y);
|
|
|
49 break;
|
|
|
50 case 3:
|
|
|
51 SDL_Unsupported();
|
|
|
52 return -1;
|
|
|
53 case 4:
|
|
|
54 DRAW_FASTSETPIXEL4(x, y);
|
|
|
55 break;
|
|
|
56 }
|
|
|
57 return 0;
|
|
|
58 }
|
|
|
59
|
|
|
60 /* vi: set ts=4 sw=4 expandtab: */
|
