+++ /dev/null
-/*
-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 the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-*/
-// r_light.c
-
-#include "quakedef.h"
-#include "cl_collision.h"
-#include "r_shadow.h"
-
-cvar_t r_coronas = {CVAR_SAVE, "r_coronas", "1", "brightness of corona flare effects around certain lights, 0 disables corona effects"};
-cvar_t gl_flashblend = {CVAR_SAVE, "gl_flashblend", "0", "render bright coronas for dynamic lights instead of actual lighting, fast but ugly"};
-
-static rtexture_t *lightcorona;
-static rtexturepool_t *lighttexturepool;
-
-void r_light_start(void)
-{
- float dx, dy;
- int x, y, a;
- unsigned char pixels[32][32][4];
- lighttexturepool = R_AllocTexturePool();
- for (y = 0;y < 32;y++)
- {
- dy = (y - 15.5f) * (1.0f / 16.0f);
- for (x = 0;x < 32;x++)
- {
- dx = (x - 15.5f) * (1.0f / 16.0f);
- a = (int)(((1.0f / (dx * dx + dy * dy + 0.2f)) - (1.0f / (1.0f + 0.2))) * 32.0f / (1.0f / (1.0f + 0.2)));
- a = bound(0, a, 255);
- pixels[y][x][0] = a;
- pixels[y][x][1] = a;
- pixels[y][x][2] = a;
- pixels[y][x][3] = 255;
- }
- }
- lightcorona = R_LoadTexture2D(lighttexturepool, "lightcorona", 32, 32, &pixels[0][0][0], TEXTYPE_BGRA, TEXF_PRECACHE, NULL);
-}
-
-void r_light_shutdown(void)
-{
- lighttexturepool = NULL;
- lightcorona = NULL;
-}
-
-void r_light_newmap(void)
-{
- int i;
- for (i = 0;i < MAX_LIGHTSTYLES;i++)
- r_refdef.lightstylevalue[i] = 256; // normal light value
-}
-
-void R_Light_Init(void)
-{
- Cvar_RegisterVariable(&r_coronas);
- Cvar_RegisterVariable(&gl_flashblend);
- R_RegisterModule("R_Light", r_light_start, r_light_shutdown, r_light_newmap);
-}
-
-void R_DrawCoronas(void)
-{
- int i, lnum, flag;
- float cscale, scale;
- dlight_t *light;
- rtlight_t *rtlight;
- if (r_coronas.value < (1.0f / 256.0f) && !gl_flashblend.integer)
- return;
- R_Mesh_Matrix(&identitymatrix);
- flag = r_refdef.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
- // FIXME: these traces should scan all render entities instead of cl.world
- for (lnum = 0, light = r_shadow_worldlightchain;light;light = light->next, lnum++)
- {
- rtlight = &light->rtlight;
- if (!(rtlight->flags & flag))
- continue;
- if (rtlight->corona * r_coronas.value <= 0)
- continue;
- if (r_shadow_debuglight.integer >= 0 && r_shadow_debuglight.integer != lnum)
- continue;
- cscale = rtlight->corona * r_coronas.value* 0.25f;
- scale = rtlight->radius * rtlight->coronasizescale;
- if (VectorDistance2(rtlight->shadoworigin, r_view.origin) < 16.0f * 16.0f)
- continue;
- if (CL_Move(r_view.origin, vec3_origin, vec3_origin, rtlight->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction < 1)
- continue;
- 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);
- }
- for (i = 0;i < r_refdef.numlights;i++)
- {
- rtlight = &r_refdef.lights[i];
- if (!(rtlight->flags & flag))
- continue;
- if (rtlight->corona <= 0)
- continue;
- if (VectorDistance2(rtlight->shadoworigin, r_view.origin) < 32.0f * 32.0f)
- continue;
- if (gl_flashblend.integer)
- {
- cscale = rtlight->corona * 1.0f;
- scale = rtlight->radius * rtlight->coronasizescale * 2.0f;
- }
- else
- {
- cscale = rtlight->corona * r_coronas.value* 0.25f;
- scale = rtlight->radius * rtlight->coronasizescale;
- }
- if (VectorLength(rtlight->color) * cscale < (1.0f / 256.0f))
- continue;
- if (CL_Move(r_view.origin, vec3_origin, vec3_origin, rtlight->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction < 1)
- continue;
- 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);
- }
-}
-
-/*
-=============================================================================
-
-LIGHT SAMPLING
-
-=============================================================================
-*/
-
-void R_CompleteLightPoint(vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const vec3_t p, int dynamic)
-{
- VectorClear(diffusecolor);
- VectorClear(diffusenormal);
-
- if (!r_fullbright.integer && r_refdef.worldmodel && r_refdef.worldmodel->brush.LightPoint)
- {
- ambientcolor[0] = ambientcolor[1] = ambientcolor[2] = r_ambient.value * (2.0f / 128.0f);
- r_refdef.worldmodel->brush.LightPoint(r_refdef.worldmodel, p, ambientcolor, diffusecolor, diffusenormal);
- }
- else
- VectorSet(ambientcolor, 1, 1, 1);
-
- if (dynamic)
- {
- int i;
- float f, v[3];
- rtlight_t *light;
- for (i = 0;i < r_refdef.numlights;i++)
- {
- light = &r_refdef.lights[i];
- Matrix4x4_Transform(&light->matrix_worldtolight, p, v);
- f = 1 - VectorLength2(v);
- if (f > 0 && CL_Move(p, vec3_origin, vec3_origin, light->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction == 1)
- VectorMA(ambientcolor, f, light->currentcolor, ambientcolor);
- }
- }
-}
projects / xonotic / darkplaces.git / blobdiff