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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5131 | clevermous | 1 | /*! |
| 2 | \file Draw_VLine.c |
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| 3 | \author Mario Palomo |
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| 4 | \author Jose M. de la Huerga Fernández |
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| 5 | \author Pepe González Mora |
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| 6 | \date 05-2002 |
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| 7 | |||
| 8 | This library is free software; you can redistribute it and/or |
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| 9 | modify it under the terms of the GNU Library General Public |
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| 10 | License as published by the Free Software Foundation; either |
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| 11 | version 2 of the License, or (at your option) any later version. |
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| 12 | |||
| 13 | This library is distributed in the hope that it will be useful, |
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| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | Library General Public License for more details. |
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| 17 | |||
| 18 | You should have received a copy of the GNU Library General Public |
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| 19 | License along with this library; if not, write to the Free Foundation, |
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| 20 | Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 21 | */ |
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| 22 | |||
| 23 | #if SDL_DRAW_BPP == 1 |
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| 24 | #define SDL_DRAW_PUTPIXEL \ |
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| 25 | i = y1-y0+1; \ |
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| 26 | switch( i % 4 ) { \ |
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| 27 | do{ \ |
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| 28 | case 0: *p = color; p+=super->pitch; \ |
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| 29 | case 3: *p = color; p+=super->pitch; \ |
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| 30 | case 2: *p = color; p+=super->pitch; \ |
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| 31 | case 1: *p = color; p+=super->pitch; \ |
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| 32 | }while( (i-=4) > 0 ); \ |
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| 33 | } |
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| 34 | |||
| 35 | #elif SDL_DRAW_BPP == 2 |
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| 36 | #define SDL_DRAW_PUTPIXEL \ |
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| 37 | i = y1-y0+1; \ |
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| 38 | switch( i % 4 ) { \ |
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| 39 | do{ \ |
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| 40 | case 0: *(Uint16*)p = color; p+=super->pitch; \ |
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| 41 | case 3: *(Uint16*)p = color; p+=super->pitch; \ |
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| 42 | case 2: *(Uint16*)p = color; p+=super->pitch; \ |
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| 43 | case 1: *(Uint16*)p = color; p+=super->pitch; \ |
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| 44 | }while( (i-=4) > 0 ); \ |
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| 45 | } |
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| 46 | |||
| 47 | #elif SDL_DRAW_BPP == 3 |
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| 48 | #define SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
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| 49 | if (SDL_BYTEORDER == SDL_BIG_ENDIAN) { \ |
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| 50 | p[0] = colorbyte2; \ |
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| 51 | p[1] = colorbyte1; \ |
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| 52 | p[2] = colorbyte0; \ |
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| 53 | } else { \ |
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| 54 | p[0] = colorbyte0; \ |
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| 55 | p[1] = colorbyte1; \ |
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| 56 | p[2] = colorbyte2; \ |
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| 57 | } |
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| 58 | |||
| 59 | #define SDL_DRAW_PUTPIXEL \ |
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| 60 | i = y1-y0+1; \ |
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| 61 | switch( i % 4 ) { \ |
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| 62 | do{ \ |
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| 63 | case 0: SDL_DRAW_PUTPIXEL_BPP_3_AUX p+=super->pitch; \ |
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| 64 | case 3: SDL_DRAW_PUTPIXEL_BPP_3_AUX p+=super->pitch; \ |
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| 65 | case 2: SDL_DRAW_PUTPIXEL_BPP_3_AUX p+=super->pitch; \ |
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| 66 | case 1: SDL_DRAW_PUTPIXEL_BPP_3_AUX p+=super->pitch; \ |
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| 67 | }while( (i-=4) > 0 ); \ |
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| 68 | } |
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| 69 | |||
| 70 | |||
| 71 | #elif SDL_DRAW_BPP == 4 |
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| 72 | #define SDL_DRAW_PUTPIXEL \ |
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| 73 | i = y1-y0+1; \ |
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| 74 | switch( i % 4 ) { \ |
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| 75 | do{ \ |
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| 76 | case 0: *(Uint32*)p = color; p+=super->pitch; \ |
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| 77 | case 3: *(Uint32*)p = color; p+=super->pitch; \ |
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| 78 | case 2: *(Uint32*)p = color; p+=super->pitch; \ |
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| 79 | case 1: *(Uint32*)p = color; p+=super->pitch; \ |
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| 80 | }while( (i-=4) > 0 ); \ |
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| 81 | } |
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| 82 | |||
| 83 | #endif /*SDL_DRAW_BPP*/ |
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| 84 | |||
| 85 | |||
| 86 | void SDL_DRAWFUNCTION(SDL_Surface *super, |
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| 87 | Sint16 x0,Sint16 y0, Sint16 y1, |
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| 88 | Uint32 color) |
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| 89 | { |
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| 90 | #if SDL_DRAW_BPP == 3 |
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| 91 | Uint8 colorbyte0 = (Uint8) (color & 0xff); |
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| 92 | Uint8 colorbyte1 = (Uint8) ((color >> 8) & 0xff); |
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| 93 | Uint8 colorbyte2 = (Uint8) ((color >> 16) & 0xff); |
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| 94 | #endif |
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| 95 | |||
| 96 | register Uint8 *p; |
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| 97 | register Sint16 i; |
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| 98 | |||
| 99 | if (y0 > y1) { i=y1; y1=y0; y0=i; } |
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| 100 | p = (Uint8*)super->pixels + y0 * super->pitch + x0 * SDL_DRAW_BPP; |
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| 101 | |||
| 102 | SDL_DRAW_PUTPIXEL |
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| 103 | |||
| 104 | }/*Draw_VLine*/ |
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| 105 | |||
| 106 | |||
| 107 | #undef SDL_DRAW_PUTPIXEL |
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| 108 | #undef SDL_DRAW_PUTPIXEL_BPP_3_AUX |
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| 109 |