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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5131 | clevermous | 1 | /* |
| 2 | Copyright (C) 1996-1997 Id Software, Inc. |
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| 3 | |||
| 4 | This program is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU General Public License |
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| 6 | as published by the Free Software Foundation; either version 2 |
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| 7 | of the License, or (at your option) any later version. |
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| 8 | |||
| 9 | This program is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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| 12 | |||
| 13 | See the GNU General Public License for more details. |
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| 14 | |||
| 15 | You should have received a copy of the GNU General Public License |
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| 16 | along with this program; if not, write to the Free Software |
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| 17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | |||
| 19 | */ |
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| 20 | // d_clear: clears a specified rectangle to the specified color |
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| 21 | |||
| 22 | #include "quakedef.h" |
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| 23 | |||
| 24 | |||
| 25 | /* |
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| 26 | ================ |
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| 27 | D_FillRect |
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| 28 | ================ |
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| 29 | */ |
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| 30 | void D_FillRect (vrect_t *rect, int color) |
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| 31 | { |
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| 32 | int rx, ry, rwidth, rheight; |
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| 33 | unsigned char *dest; |
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| 34 | unsigned *ldest; |
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| 35 | |||
| 36 | rx = rect->x; |
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| 37 | ry = rect->y; |
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| 38 | rwidth = rect->width; |
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| 39 | rheight = rect->height; |
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| 40 | |||
| 41 | if (rx < 0) |
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| 42 | { |
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| 43 | rwidth += rx; |
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| 44 | rx = 0; |
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| 45 | } |
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| 46 | if (ry < 0) |
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| 47 | { |
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| 48 | rheight += ry; |
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| 49 | ry = 0; |
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| 50 | } |
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| 51 | if (rx+rwidth > vid.width) |
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| 52 | rwidth = vid.width - rx; |
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| 53 | if (ry+rheight > vid.height) |
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| 54 | rheight = vid.height - rx; |
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| 55 | |||
| 56 | if (rwidth < 1 || rheight < 1) |
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| 57 | return; |
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| 58 | |||
| 59 | dest = ((byte *)vid.buffer + ry*vid.rowbytes + rx); |
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| 60 | |||
| 61 | if (((rwidth & 0x03) == 0) && (((long)dest & 0x03) == 0)) |
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| 62 | { |
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| 63 | // faster aligned dword clear |
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| 64 | ldest = (unsigned *)dest; |
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| 65 | color += color << 16; |
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| 66 | |||
| 67 | rwidth >>= 2; |
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| 68 | color += color << 8; |
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| 69 | |||
| 70 | for (ry=0 ; ry |
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| 71 | { |
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| 72 | for (rx=0 ; rx |
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| 73 | ldest[rx] = color; |
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| 74 | ldest = (unsigned *)((byte*)ldest + vid.rowbytes); |
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| 75 | } |
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| 76 | } |
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| 77 | else |
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| 78 | { |
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| 79 | // slower byte-by-byte clear for unaligned cases |
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| 80 | for (ry=0 ; ry |
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| 81 | { |
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| 82 | for (rx=0 ; rx |
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| 83 | dest[rx] = color; |
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| 84 | dest += vid.rowbytes; |
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| 85 | } |
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| 86 | } |
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| 87 | } |
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| 88 |