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88 lines
1.7 KiB
88 lines
1.7 KiB
/*
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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 the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// gl_fullbright.c: fullbright pixel processing
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// Developed by Jacques Krige
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// Ultimate Quake Engine
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// http://www.jacqueskrige.com
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#include "quakedef.h"
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qboolean GL_FullbrightTexture (byte *in, byte *out, int width, int height)
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{
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int i, j;
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int p;
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int numpixels;
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qboolean fbtex;
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numpixels = width * height;
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fbtex = false;
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// check if this texture has fullbrights
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for (i = 0; i < numpixels; i++)
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{
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p = in[i];
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if (p > 238 && p != 255)
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{
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fbtex = true;
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break;
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}
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}
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// replace non fullbrights with black
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if (fbtex == true)
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{
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for (i = 0, j = 0; i < numpixels; i++, j+=4)
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{
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if (in[i] < 239)
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in[i] = 0;
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p = in[i];
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if (p == 0)
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{
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out[j+0] = 0;
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out[j+1] = 0;
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out[j+2] = 0;
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out[j+3] = 255;
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}
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else if (p == 255)
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{
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out[j+0] = 0;
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out[j+1] = 0;
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out[j+2] = 0;
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out[j+3] = 0;
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}
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else
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{
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out[j+0] = host_basepal[(p*3)+0];
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out[j+1] = host_basepal[(p*3)+1];
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out[j+2] = host_basepal[(p*3)+2];
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out[j+3] = 255;
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}
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}
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}
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return fbtex;
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}
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