mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-18 02:31:31 +00:00
110 lines
2.8 KiB
C
110 lines
2.8 KiB
C
/*
|
|
mod_flood.c
|
|
|
|
Flood fill a skin texture.
|
|
|
|
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:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
*/
|
|
// models are the only shared resource between a client and server running
|
|
// on the same machine.
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
static __attribute__ ((used)) const char rcsid[] = "$Id$";
|
|
|
|
#include "QF/model.h"
|
|
#include "QF/sys.h"
|
|
#include "QF/vid.h"
|
|
|
|
// a pose is a single set of vertexes. a frame may be
|
|
// an animating sequence of poses
|
|
|
|
typedef struct {
|
|
short x, y;
|
|
} floodfill_t;
|
|
|
|
// must be a power of 2
|
|
#define FLOODFILL_FIFO_SIZE 0x1000
|
|
#define FLOODFILL_FIFO_MASK (FLOODFILL_FIFO_SIZE - 1)
|
|
|
|
#define FLOODFILL_STEP( off, dx, dy ) \
|
|
{ \
|
|
if (pos[off] == fillcolor) { \
|
|
pos[off] = 255; \
|
|
fifo[inpt].x = x + (dx), fifo[inpt].y = y + (dy); \
|
|
inpt = (inpt + 1) & FLOODFILL_FIFO_MASK; \
|
|
} else if (pos[off] != 255) \
|
|
fdc = pos[off]; \
|
|
}
|
|
|
|
/*
|
|
Mod_FloodFillSkin
|
|
|
|
Fill background pixels so mipmapping doesn't have halos - Ed
|
|
*/
|
|
VISIBLE void
|
|
Mod_FloodFillSkin (byte * skin, int skinwidth, int skinheight)
|
|
{
|
|
byte fillcolor = *skin; // assume this is the pixel to fill
|
|
floodfill_t fifo[FLOODFILL_FIFO_SIZE];
|
|
int filledcolor = -1, inpt = 0, outpt = 0;
|
|
int i;
|
|
|
|
if (filledcolor == -1) {
|
|
filledcolor = 0;
|
|
// attempt to find opaque black
|
|
for (i = 0; i < 256; ++i)
|
|
if (d_8to24table[i] == (255 << 0)) // alpha 1.0
|
|
{
|
|
filledcolor = i;
|
|
break;
|
|
}
|
|
}
|
|
// can't fill to filled color or transparent color (used as visited marker)
|
|
if ((fillcolor == filledcolor) || (fillcolor == 255)) {
|
|
Sys_MaskPrintf (SYS_GLT, "not filling skin from %d to %d\n",
|
|
fillcolor, filledcolor);
|
|
return;
|
|
}
|
|
|
|
fifo[inpt].x = 0, fifo[inpt].y = 0;
|
|
inpt = (inpt + 1) & FLOODFILL_FIFO_MASK;
|
|
|
|
while (outpt != inpt) {
|
|
int x = fifo[outpt].x, y = fifo[outpt].y, fdc = filledcolor;
|
|
byte *pos = &skin[x + skinwidth * y];
|
|
|
|
outpt = (outpt + 1) & FLOODFILL_FIFO_MASK;
|
|
|
|
if (x > 0)
|
|
FLOODFILL_STEP (-1, -1, 0);
|
|
if (x < skinwidth - 1)
|
|
FLOODFILL_STEP (1, 1, 0);
|
|
if (y > 0)
|
|
FLOODFILL_STEP (-skinwidth, 0, -1);
|
|
if (y < skinheight - 1)
|
|
FLOODFILL_STEP (skinwidth, 0, 1);
|
|
skin[x + skinwidth * y] = fdc;
|
|
}
|
|
}
|