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| Rev | Author | Line No. | Line |
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| 5131 | clevermous | 1 | /*! |
| 2 | \file Draw_HLine.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 | memset(p, color, x1-x0+1); |
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| 26 | |||
| 27 | #elif SDL_DRAW_BPP == 2 |
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| 28 | #define SDL_DRAW_PUTPIXEL \ |
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| 29 | i = x1-x0+1; \ |
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| 30 | switch( i % 4 ) { \ |
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| 31 | do{ \ |
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| 32 | case 0: *(Uint16*)p = color; p+=2; \ |
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| 33 | case 3: *(Uint16*)p = color; p+=2; \ |
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| 34 | case 2: *(Uint16*)p = color; p+=2; \ |
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| 35 | case 1: *(Uint16*)p = color; p+=2; \ |
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| 36 | }while( (i-=4) > 0 ); \ |
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| 37 | } |
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| 38 | |||
| 39 | #elif SDL_DRAW_BPP == 3 |
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| 40 | #define SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
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| 41 | if (SDL_BYTEORDER == SDL_BIG_ENDIAN) { \ |
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| 42 | p[0] = colorbyte2; \ |
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| 43 | p[1] = colorbyte1; \ |
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| 44 | p[2] = colorbyte0; \ |
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| 45 | } else { \ |
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| 46 | p[0] = colorbyte0; \ |
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| 47 | p[1] = colorbyte1; \ |
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| 48 | p[2] = colorbyte2; \ |
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| 49 | } |
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| 50 | |||
| 51 | #define SDL_DRAW_PUTPIXEL \ |
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| 52 | i = x1-x0+1; \ |
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| 53 | switch( i % 4 ) { \ |
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| 54 | do{ \ |
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| 55 | case 0: SDL_DRAW_PUTPIXEL_BPP_3_AUX p+=3; \ |
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| 56 | case 3: SDL_DRAW_PUTPIXEL_BPP_3_AUX p+=3; \ |
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| 57 | case 2: SDL_DRAW_PUTPIXEL_BPP_3_AUX p+=3; \ |
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| 58 | case 1: SDL_DRAW_PUTPIXEL_BPP_3_AUX p+=3; \ |
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| 59 | }while( (i-=4) > 0 ); \ |
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| 60 | } |
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| 61 | |||
| 62 | #elif SDL_DRAW_BPP == 4 |
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| 63 | |||
| 64 | #ifdef __linux__ |
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| 65 | #define SDL_DRAW_WMEMSET_START \ |
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| 66 | if (sizeof(wchar_t) == sizeof(Uint32)) { \ |
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| 67 | wmemset((wchar_t*)p, color, x1-x0+1); \ |
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| 68 | } else { |
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| 69 | #define SDL_DRAW_WMEMSET_END } |
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| 70 | #else |
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| 71 | #define SDL_DRAW_WMEMSET_START |
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| 72 | #define SDL_DRAW_WMEMSET_END |
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| 73 | #endif |
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| 74 | |||
| 75 | #define SDL_DRAW_PUTPIXEL \ |
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| 76 | SDL_DRAW_WMEMSET_START \ |
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| 77 | i = x1-x0+1; \ |
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| 78 | switch( i % 4 ) { \ |
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| 79 | do{ \ |
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| 80 | case 0: *(Uint32*)p = color; p+=4; \ |
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| 81 | case 3: *(Uint32*)p = color; p+=4; \ |
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| 82 | case 2: *(Uint32*)p = color; p+=4; \ |
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| 83 | case 1: *(Uint32*)p = color; p+=4; \ |
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| 84 | }while( (i-=4) > 0 ); \ |
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| 85 | } \ |
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| 86 | SDL_DRAW_WMEMSET_END |
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| 87 | |||
| 88 | #endif /*SDL_DRAW_BPP*/ |
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| 89 | |||
| 90 | |||
| 91 | void SDL_DRAWFUNCTION(SDL_Surface *super, |
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| 92 | Sint16 x0,Sint16 y0, Sint16 x1, |
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| 93 | Uint32 color) |
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| 94 | { |
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| 95 | #if SDL_DRAW_BPP == 3 |
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| 96 | Uint8 colorbyte0 = (Uint8) (color & 0xff); |
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| 97 | Uint8 colorbyte1 = (Uint8) ((color >> 8) & 0xff); |
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| 98 | Uint8 colorbyte2 = (Uint8) ((color >> 16) & 0xff); |
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| 99 | #endif |
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| 100 | |||
| 101 | register Uint8 *p; |
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| 102 | register Sint16 i; |
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| 103 | |||
| 104 | if (x0 > x1) { i=x1; x1=x0; x0=i; } |
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| 105 | p = (Uint8*)super->pixels + y0 * super->pitch + x0 * SDL_DRAW_BPP; |
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| 106 | |||
| 107 | SDL_DRAW_PUTPIXEL |
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| 108 | |||
| 109 | }/*Draw_HLine*/ |
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| 110 | |||
| 111 | |||
| 112 | #undef SDL_DRAW_PUTPIXEL |
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| 113 | #undef SDL_DRAW_PUTPIXEL_BPP_3_AUX |
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| 114 | |||
| 115 | #undef SDL_DRAW_WMEMSET_START |
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| 116 | #undef SDL_DRAW_WMEMSET_END |
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| 117 |