| 0,0 → 1,88 |
|---|
| /* |
| Copyright (C) 1996-1997 Id Software, Inc. |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License |
| as published by the Free Software Foundation; either version 2 |
| of the License, or (at your option) any later version. |
| |
| This program 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| |
| */ |
| // d_clear: clears a specified rectangle to the specified color |
| |
| #include "quakedef.h" |
| |
| |
| /* |
| ================ |
| D_FillRect |
| ================ |
| */ |
| void D_FillRect (vrect_t *rect, int color) |
| { |
| int rx, ry, rwidth, rheight; |
| unsigned char *dest; |
| unsigned *ldest; |
| |
| rx = rect->x; |
| ry = rect->y; |
| rwidth = rect->width; |
| rheight = rect->height; |
| |
| if (rx < 0) |
| { |
| rwidth += rx; |
| rx = 0; |
| } |
| if (ry < 0) |
| { |
| rheight += ry; |
| ry = 0; |
| } |
| if (rx+rwidth > vid.width) |
| rwidth = vid.width - rx; |
| if (ry+rheight > vid.height) |
| rheight = vid.height - rx; |
| |
| if (rwidth < 1 || rheight < 1) |
| return; |
| |
| dest = ((byte *)vid.buffer + ry*vid.rowbytes + rx); |
| |
| if (((rwidth & 0x03) == 0) && (((long)dest & 0x03) == 0)) |
| { |
| // faster aligned dword clear |
| ldest = (unsigned *)dest; |
| color += color << 16; |
| |
| rwidth >>= 2; |
| color += color << 8; |
| |
| for (ry=0 ; ry<rheight ; ry++) |
| { |
| for (rx=0 ; rx<rwidth ; rx++) |
| ldest[rx] = color; |
| ldest = (unsigned *)((byte*)ldest + vid.rowbytes); |
| } |
| } |
| else |
| { |
| // slower byte-by-byte clear for unaligned cases |
| for (ry=0 ; ry<rheight ; ry++) |
| { |
| for (rx=0 ; rx<rwidth ; rx++) |
| dest[rx] = color; |
| dest += vid.rowbytes; |
| } |
| } |
| } |
| |