mirror of https://git.code.sf.net/p/quake/newtree
126 lines
2.8 KiB
C
126 lines
2.8 KiB
C
/*
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sw_view.c
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player eye positioning
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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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$Id$
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*/
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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 "quakedef.h"
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#include "r_local.h"
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extern byte gammatable[256];
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void V_CalcPowerupCshift (void);
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qboolean V_CheckGamma (void);
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/*
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=============
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V_UpdatePalette
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=============
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*/
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void V_UpdatePalette (void)
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{
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int i, j;
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qboolean new;
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byte *basepal, *newpal;
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byte pal[768];
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int r,g,b;
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qboolean force;
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V_CalcPowerupCshift ();
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new = false;
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for (i=0; i < NUM_CSHIFTS; i++) {
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if (cl.cshifts[i].percent != cl.prev_cshifts[i].percent) {
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new = true;
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cl.prev_cshifts[i].percent = cl.cshifts[i].percent;
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}
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for (j = 0; j < 3; j++) {
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if (cl.cshifts[i].destcolor[j] != cl.prev_cshifts[i].destcolor[j]) {
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new = true;
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cl.prev_cshifts[i].destcolor[j] = cl.cshifts[i].destcolor[j];
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}
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}
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}
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// drop the damage value
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cl.cshifts[CSHIFT_DAMAGE].percent -= host_frametime*150;
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if (cl.cshifts[CSHIFT_DAMAGE].percent <= 0)
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cl.cshifts[CSHIFT_DAMAGE].percent = 0;
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// drop the bonus value
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cl.cshifts[CSHIFT_BONUS].percent -= host_frametime*100;
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if (cl.cshifts[CSHIFT_BONUS].percent <= 0)
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cl.cshifts[CSHIFT_BONUS].percent = 0;
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force = V_CheckGamma ();
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if (!new && !force)
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return;
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basepal = host_basepal;
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newpal = pal;
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for (i=0 ; i<256 ; i++) {
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r = basepal[0];
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g = basepal[1];
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b = basepal[2];
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basepal += 3;
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for (j=0 ; j<NUM_CSHIFTS ; j++) {
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r += (cl.cshifts[j].percent*(cl.cshifts[j].destcolor[0]-r))>>8;
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g += (cl.cshifts[j].percent*(cl.cshifts[j].destcolor[1]-g))>>8;
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b += (cl.cshifts[j].percent*(cl.cshifts[j].destcolor[2]-b))>>8;
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}
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newpal[0] = gammatable[r];
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newpal[1] = gammatable[g];
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newpal[2] = gammatable[b];
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newpal += 3;
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}
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VID_ShiftPalette (pal);
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}
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void
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BuildGammaTable (float b, float c)
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{
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int i, inf;
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if ((b == 1.0) && (c == 1.0)) {
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for (i = 0; i < 256; i++)
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gammatable[i] = i;
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return;
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}
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for (i = 0; i < 256; i++) { // weighted average toward the median, 127
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inf = (i * b); // gamma is brightness now, and positive
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inf = bound (0, inf, 255);
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gammatable[i] = inf + (int) ((127 - inf) * (1 - c));
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}
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}
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