mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-12-23 11:01:46 +00:00
140 lines
2.8 KiB
C
140 lines
2.8 KiB
C
/*
|
|
gl_dyn_lights.c
|
|
|
|
polyblended dynamic lights
|
|
|
|
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
|
|
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#define NH_DEFINE
|
|
#include "namehack.h"
|
|
|
|
#ifdef HAVE_STRING_H
|
|
# include <string.h>
|
|
#endif
|
|
#ifdef HAVE_STRINGS_H
|
|
# include <strings.h>
|
|
#endif
|
|
|
|
#include <math.h>
|
|
#include <stdio.h>
|
|
|
|
#include "QF/cvar.h"
|
|
#include "QF/render.h"
|
|
#include "QF/GL/defines.h"
|
|
#include "QF/GL/funcs.h"
|
|
#include "QF/GL/qf_rlight.h"
|
|
|
|
#include "r_internal.h"
|
|
|
|
float gl_bubble_sintable[33], gl_bubble_costable[33];
|
|
|
|
|
|
void
|
|
gl_R_InitBubble (void)
|
|
{
|
|
float a;
|
|
float *bub_sin, *bub_cos;
|
|
int i;
|
|
|
|
bub_sin = gl_bubble_sintable;
|
|
bub_cos = gl_bubble_costable;
|
|
|
|
for (i = 32; i >= 0; i--) {
|
|
a = i * (M_PI / 16.0);
|
|
*bub_sin++ = sin (a);
|
|
*bub_cos++ = cos (a);
|
|
}
|
|
}
|
|
|
|
static void
|
|
R_RenderDlight (dlight_t *light)
|
|
{
|
|
float rad;
|
|
float *bub_sin, *bub_cos;
|
|
int i, j;
|
|
vec3_t v;
|
|
|
|
bub_sin = gl_bubble_sintable;
|
|
bub_cos = gl_bubble_costable;
|
|
rad = light->radius * 0.35;
|
|
|
|
VectorSubtract (light->origin, r_origin, v);
|
|
if (VectorLength (v) < rad) // view is inside the dlight
|
|
return;
|
|
|
|
qfglBegin (GL_TRIANGLE_FAN);
|
|
|
|
qfglColor4fv (light->color);
|
|
|
|
VectorSubtract (r_origin, light->origin, v);
|
|
VectorNormalize (v);
|
|
|
|
for (i = 0; i < 3; i++)
|
|
v[i] = light->origin[i] + v[i] * rad;
|
|
|
|
qfglVertex3fv (v);
|
|
qfglColor3ubv (color_black);
|
|
|
|
for (i = 16; i >= 0; i--) {
|
|
for (j = 0; j < 3; j++)
|
|
v[j] = light->origin[j] + (vright[j] * (*bub_cos) +
|
|
vup[j] * (*bub_sin)) * rad;
|
|
bub_sin += 2;
|
|
bub_cos += 2;
|
|
qfglVertex3fv (v);
|
|
}
|
|
|
|
qfglEnd ();
|
|
}
|
|
|
|
void
|
|
gl_R_RenderDlights (void)
|
|
{
|
|
unsigned int i;
|
|
dlight_t *l;
|
|
|
|
if (!gl_dlight_polyblend->int_val)
|
|
return;
|
|
|
|
qfglDepthMask (GL_FALSE);
|
|
qfglDisable (GL_TEXTURE_2D);
|
|
qfglBlendFunc (GL_ONE, GL_ONE);
|
|
qfglShadeModel (GL_SMOOTH);
|
|
|
|
l = r_dlights;
|
|
for (i = 0; i < r_maxdlights; i++, l++) {
|
|
if (l->die < vr_data.realtime || !l->radius)
|
|
continue;
|
|
R_RenderDlight (l);
|
|
}
|
|
|
|
if (!gl_dlight_smooth->int_val)
|
|
qfglShadeModel (GL_FLAT);
|
|
qfglColor3ubv (color_white);
|
|
qfglEnable (GL_TEXTURE_2D);
|
|
qfglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
qfglDepthMask (GL_TRUE);
|
|
}
|