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https://git.code.sf.net/p/quake/quakeforge
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5f93c115ff
They're now an enum, and the flag part of the name is all lowercase, but now the flag definitions and names list will never get out of sync.
109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
/*
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mod_flood.c
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Flood fill a skin texture.
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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// models are the only shared resource between a client and server running
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// on the same machine.
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "QF/sys.h"
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#include "QF/vid.h"
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#include "mod_internal.h"
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// a pose is a single set of vertexes. a frame may be
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// an animating sequence of poses
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typedef struct {
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short x, y;
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} floodfill_t;
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// must be a power of 2
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#define FLOODFILL_FIFO_SIZE 0x1000
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#define FLOODFILL_FIFO_MASK (FLOODFILL_FIFO_SIZE - 1)
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#define FLOODFILL_STEP( off, dx, dy ) \
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{ \
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if (pos[off] == fillcolor) { \
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pos[off] = 255; \
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fifo[inpt].x = x + (dx), fifo[inpt].y = y + (dy); \
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inpt = (inpt + 1) & FLOODFILL_FIFO_MASK; \
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} else if (pos[off] != 255) \
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fdc = pos[off]; \
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}
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/*
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Mod_FloodFillSkin
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Fill background pixels so mipmapping doesn't have halos - Ed
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*/
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VISIBLE void
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Mod_FloodFillSkin (byte * skin, int skinwidth, int skinheight)
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{
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byte fillcolor = *skin; // assume this is the pixel to fill
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floodfill_t fifo[FLOODFILL_FIFO_SIZE];
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int filledcolor = -1, inpt = 0, outpt = 0;
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int i;
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if (filledcolor == -1) {
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filledcolor = 0;
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// attempt to find opaque black
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for (i = 0; i < 256; ++i)
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if (d_8to24table[i] == (255 << 0)) // alpha 1.0
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{
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filledcolor = i;
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break;
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}
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}
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// can't fill to filled color or transparent color (used as visited marker)
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if ((fillcolor == filledcolor) || (fillcolor == 255)) {
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Sys_MaskPrintf (SYS_glt, "not filling skin from %d to %d\n",
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fillcolor, filledcolor);
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return;
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}
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fifo[inpt].x = 0, fifo[inpt].y = 0;
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inpt = (inpt + 1) & FLOODFILL_FIFO_MASK;
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while (outpt != inpt) {
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int x = fifo[outpt].x, y = fifo[outpt].y, fdc = filledcolor;
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byte *pos = &skin[x + skinwidth * y];
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outpt = (outpt + 1) & FLOODFILL_FIFO_MASK;
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if (x > 0)
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FLOODFILL_STEP (-1, -1, 0);
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if (x < skinwidth - 1)
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FLOODFILL_STEP (1, 1, 0);
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if (y > 0)
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FLOODFILL_STEP (-skinwidth, 0, -1);
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if (y < skinheight - 1)
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FLOODFILL_STEP (skinwidth, 0, 1);
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skin[x + skinwidth * y] = fdc;
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}
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}
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