2 Copyright (C) 1996-1997 Id Software, Inc.
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 See the GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 #include "cl_collision.h"
26 cvar_t r_coronas = {CVAR_SAVE, "r_coronas", "1", "brightness of corona flare effects around certain lights, 0 disables corona effects"};
27 cvar_t gl_flashblend = {CVAR_SAVE, "gl_flashblend", "0", "render bright coronas for dynamic lights instead of actual lighting, fast but ugly"};
29 static rtexture_t *lightcorona;
30 static rtexturepool_t *lighttexturepool;
32 void r_light_start(void)
36 unsigned char pixels[32][32][4];
37 lighttexturepool = R_AllocTexturePool();
38 for (y = 0;y < 32;y++)
40 dy = (y - 15.5f) * (1.0f / 16.0f);
41 for (x = 0;x < 32;x++)
43 dx = (x - 15.5f) * (1.0f / 16.0f);
44 a = (int)(((1.0f / (dx * dx + dy * dy + 0.2f)) - (1.0f / (1.0f + 0.2))) * 32.0f / (1.0f / (1.0f + 0.2)));
49 pixels[y][x][3] = 255;
52 lightcorona = R_LoadTexture2D(lighttexturepool, "lightcorona", 32, 32, &pixels[0][0][0], TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
55 void r_light_shutdown(void)
57 lighttexturepool = NULL;
61 void r_light_newmap(void)
64 for (i = 0;i < MAX_LIGHTSTYLES;i++)
65 r_refdef.lightstylevalue[i] = 264; // normal light value
68 void R_Light_Init(void)
70 Cvar_RegisterVariable(&r_coronas);
71 Cvar_RegisterVariable(&gl_flashblend);
72 R_RegisterModule("R_Light", r_light_start, r_light_shutdown, r_light_newmap);
75 void R_DrawCoronas(void)
81 if (r_coronas.value < (1.0f / 256.0f) && !gl_flashblend.integer)
83 R_Mesh_Matrix(&identitymatrix);
84 flag = r_refdef.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
85 // FIXME: these traces should scan all render entities instead of cl.world
86 for (lnum = 0, light = r_shadow_worldlightchain;light;light = light->next, lnum++)
88 rtlight = &light->rtlight;
89 if (!(rtlight->flags & flag))
91 if (rtlight->corona * r_coronas.value <= 0)
93 if (r_shadow_debuglight.integer >= 0 && r_shadow_debuglight.integer != lnum)
95 cscale = rtlight->corona * r_coronas.value* 0.25f;
96 scale = rtlight->radius * rtlight->coronasizescale;
97 if (VectorDistance2(rtlight->shadoworigin, r_view.origin) < 16.0f * 16.0f)
99 if (CL_Move(r_view.origin, vec3_origin, vec3_origin, rtlight->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction < 1)
101 R_DrawSprite(GL_ONE, GL_ONE, lightcorona, NULL, true, false, rtlight->shadoworigin, r_view.right, r_view.up, scale, -scale, -scale, scale, rtlight->color[0] * cscale, rtlight->color[1] * cscale, rtlight->color[2] * cscale, 1);
103 for (i = 0;i < r_refdef.numlights;i++)
105 rtlight = &r_refdef.lights[i];
106 if (!(rtlight->flags & flag))
108 if (rtlight->corona <= 0)
110 if (VectorDistance2(rtlight->shadoworigin, r_view.origin) < 32.0f * 32.0f)
112 if (gl_flashblend.integer)
114 cscale = rtlight->corona * 1.0f;
115 scale = rtlight->radius * rtlight->coronasizescale * 2.0f;
119 cscale = rtlight->corona * r_coronas.value* 0.25f;
120 scale = rtlight->radius * rtlight->coronasizescale;
122 if (VectorLength(rtlight->color) * cscale < (1.0f / 256.0f))
124 if (CL_Move(r_view.origin, vec3_origin, vec3_origin, rtlight->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction < 1)
126 R_DrawSprite(GL_ONE, GL_ONE, lightcorona, NULL, true, false, rtlight->shadoworigin, r_view.right, r_view.up, scale, -scale, -scale, scale, rtlight->color[0] * cscale, rtlight->color[1] * cscale, rtlight->color[2] * cscale, 1);
131 =============================================================================
135 =============================================================================
138 void R_CompleteLightPoint(vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const vec3_t p, int dynamic)
140 VectorClear(diffusecolor);
141 VectorClear(diffusenormal);
143 if (!r_fullbright.integer && r_refdef.worldmodel && r_refdef.worldmodel->brush.LightPoint)
145 ambientcolor[0] = ambientcolor[1] = ambientcolor[2] = r_ambient.value * (2.0f / 128.0f);
146 r_refdef.worldmodel->brush.LightPoint(r_refdef.worldmodel, p, ambientcolor, diffusecolor, diffusenormal);
149 VectorSet(ambientcolor, 1, 1, 1);
156 for (i = 0;i < r_refdef.numlights;i++)
158 light = &r_refdef.lights[i];
159 Matrix4x4_Transform(&light->matrix_worldtolight, p, v);
160 f = 1 - VectorLength2(v);
161 if (f > 0 && CL_Move(p, vec3_origin, vec3_origin, light->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction == 1)
162 VectorMA(ambientcolor, f, light->currentcolor, ambientcolor);