forked from KolibriOS/kolibrios
1695 lines
34 KiB
C
1695 lines
34 KiB
C
/*
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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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// r_surf.c: surface-related refresh code
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#include "quakedef.h"
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int skytexturenum;
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#ifndef GL_RGBA4
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#define GL_RGBA4 0
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#endif
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int lightmap_bytes; // 1, 2, or 4
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int lightmap_textures;
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unsigned blocklights[18*18];
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#define BLOCK_WIDTH 128
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#define BLOCK_HEIGHT 128
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#define MAX_LIGHTMAPS 64
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int active_lightmaps;
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typedef struct glRect_s {
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unsigned char l,t,w,h;
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} glRect_t;
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glpoly_t *lightmap_polys[MAX_LIGHTMAPS];
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qboolean lightmap_modified[MAX_LIGHTMAPS];
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glRect_t lightmap_rectchange[MAX_LIGHTMAPS];
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int allocated[MAX_LIGHTMAPS][BLOCK_WIDTH];
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// the lightmap texture data needs to be kept in
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// main memory so texsubimage can update properly
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byte lightmaps[4*MAX_LIGHTMAPS*BLOCK_WIDTH*BLOCK_HEIGHT];
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// For gl_texsort 0
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msurface_t *skychain = NULL;
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msurface_t *waterchain = NULL;
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void R_RenderDynamicLightmaps (msurface_t *fa);
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/*
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===============
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R_AddDynamicLights
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===============
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*/
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void R_AddDynamicLights (msurface_t *surf)
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{
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int lnum;
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int sd, td;
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float dist, rad, minlight;
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vec3_t impact, local;
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int s, t;
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int i;
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int smax, tmax;
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mtexinfo_t *tex;
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smax = (surf->extents[0]>>4)+1;
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tmax = (surf->extents[1]>>4)+1;
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tex = surf->texinfo;
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for (lnum=0 ; lnum<MAX_DLIGHTS ; lnum++)
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{
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if ( !(surf->dlightbits & (1<<lnum) ) )
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continue; // not lit by this light
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rad = cl_dlights[lnum].radius;
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dist = DotProduct (cl_dlights[lnum].origin, surf->plane->normal) -
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surf->plane->dist;
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rad -= fabs(dist);
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minlight = cl_dlights[lnum].minlight;
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if (rad < minlight)
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continue;
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minlight = rad - minlight;
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for (i=0 ; i<3 ; i++)
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{
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impact[i] = cl_dlights[lnum].origin[i] -
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surf->plane->normal[i]*dist;
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}
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local[0] = DotProduct (impact, tex->vecs[0]) + tex->vecs[0][3];
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local[1] = DotProduct (impact, tex->vecs[1]) + tex->vecs[1][3];
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local[0] -= surf->texturemins[0];
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local[1] -= surf->texturemins[1];
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for (t = 0 ; t<tmax ; t++)
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{
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td = local[1] - t*16;
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if (td < 0)
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td = -td;
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for (s=0 ; s<smax ; s++)
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{
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sd = local[0] - s*16;
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if (sd < 0)
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sd = -sd;
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if (sd > td)
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dist = sd + (td>>1);
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else
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dist = td + (sd>>1);
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if (dist < minlight)
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blocklights[t*smax + s] += (rad - dist)*256;
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}
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}
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}
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}
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/*
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===============
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R_BuildLightMap
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Combine and scale multiple lightmaps into the 8.8 format in blocklights
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===============
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*/
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void R_BuildLightMap (msurface_t *surf, byte *dest, int stride)
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{
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int smax, tmax;
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int t;
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int i, j, size;
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byte *lightmap;
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unsigned scale;
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int maps;
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int lightadj[4];
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unsigned *bl;
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surf->cached_dlight = (surf->dlightframe == r_framecount);
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smax = (surf->extents[0]>>4)+1;
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tmax = (surf->extents[1]>>4)+1;
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size = smax*tmax;
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lightmap = surf->samples;
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// set to full bright if no light data
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if (r_fullbright.value || !cl.worldmodel->lightdata)
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{
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for (i=0 ; i<size ; i++)
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blocklights[i] = 255*256;
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goto store;
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}
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// clear to no light
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for (i=0 ; i<size ; i++)
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blocklights[i] = 0;
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// add all the lightmaps
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if (lightmap)
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for (maps = 0 ; maps < MAXLIGHTMAPS && surf->styles[maps] != 255 ;
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maps++)
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{
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scale = d_lightstylevalue[surf->styles[maps]];
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surf->cached_light[maps] = scale; // 8.8 fraction
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for (i=0 ; i<size ; i++)
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blocklights[i] += lightmap[i] * scale;
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lightmap += size; // skip to next lightmap
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}
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// add all the dynamic lights
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if (surf->dlightframe == r_framecount)
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R_AddDynamicLights (surf);
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// bound, invert, and shift
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store:
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switch (gl_lightmap_format)
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{
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case GL_RGBA:
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stride -= (smax<<2);
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bl = blocklights;
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for (i=0 ; i<tmax ; i++, dest += stride)
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{
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for (j=0 ; j<smax ; j++)
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{
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t = *bl++;
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t >>= 7;
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if (t > 255)
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t = 255;
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dest[3] = 255-t;
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dest += 4;
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}
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}
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break;
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case GL_ALPHA:
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case GL_LUMINANCE:
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case GL_INTENSITY:
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bl = blocklights;
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for (i=0 ; i<tmax ; i++, dest += stride)
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{
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for (j=0 ; j<smax ; j++)
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{
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t = *bl++;
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t >>= 7;
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if (t > 255)
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t = 255;
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dest[j] = 255-t;
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}
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}
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break;
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default:
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Sys_Error ("Bad lightmap format");
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}
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}
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/*
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===============
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R_TextureAnimation
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Returns the proper texture for a given time and base texture
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===============
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*/
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texture_t *R_TextureAnimation (texture_t *base)
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{
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int reletive;
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int count;
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if (currententity->frame)
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{
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if (base->alternate_anims)
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base = base->alternate_anims;
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}
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if (!base->anim_total)
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return base;
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reletive = (int)(cl.time*10) % base->anim_total;
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count = 0;
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while (base->anim_min > reletive || base->anim_max <= reletive)
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{
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base = base->anim_next;
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if (!base)
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Sys_Error ("R_TextureAnimation: broken cycle");
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if (++count > 100)
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Sys_Error ("R_TextureAnimation: infinite cycle");
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}
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return base;
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}
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/*
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=============================================================
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BRUSH MODELS
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=============================================================
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*/
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extern int solidskytexture;
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extern int alphaskytexture;
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extern float speedscale; // for top sky and bottom sky
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void DrawGLWaterPoly (glpoly_t *p);
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void DrawGLWaterPolyLightmap (glpoly_t *p);
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lpMTexFUNC qglMTexCoord2fSGIS = NULL;
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lpSelTexFUNC qglSelectTextureSGIS = NULL;
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qboolean mtexenabled = false;
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void GL_SelectTexture (GLenum target);
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void GL_DisableMultitexture(void)
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{
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if (mtexenabled) {
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glDisable(GL_TEXTURE_2D);
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GL_SelectTexture(TEXTURE0_SGIS);
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mtexenabled = false;
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}
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}
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void GL_EnableMultitexture(void)
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{
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if (gl_mtexable) {
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GL_SelectTexture(TEXTURE1_SGIS);
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glEnable(GL_TEXTURE_2D);
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mtexenabled = true;
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}
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}
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#if 0
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/*
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================
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R_DrawSequentialPoly
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Systems that have fast state and texture changes can
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just do everything as it passes with no need to sort
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================
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*/
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void R_DrawSequentialPoly (msurface_t *s)
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{
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glpoly_t *p;
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float *v;
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int i;
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texture_t *t;
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//
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// normal lightmaped poly
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//
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if (! (s->flags & (SURF_DRAWSKY|SURF_DRAWTURB|SURF_UNDERWATER) ) )
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{
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p = s->polys;
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t = R_TextureAnimation (s->texinfo->texture);
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GL_Bind (t->gl_texturenum);
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glBegin (GL_POLYGON);
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v = p->verts[0];
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for (i=0 ; i<p->numverts ; i++, v+= VERTEXSIZE)
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{
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glTexCoord2f (v[3], v[4]);
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glVertex3fv (v);
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}
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glEnd ();
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GL_Bind (lightmap_textures + s->lightmaptexturenum);
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glEnable (GL_BLEND);
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glBegin (GL_POLYGON);
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v = p->verts[0];
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for (i=0 ; i<p->numverts ; i++, v+= VERTEXSIZE)
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{
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glTexCoord2f (v[5], v[6]);
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glVertex3fv (v);
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}
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glEnd ();
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glDisable (GL_BLEND);
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return;
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}
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//
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// subdivided water surface warp
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//
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if (s->flags & SURF_DRAWTURB)
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{
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GL_Bind (s->texinfo->texture->gl_texturenum);
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EmitWaterPolys (s);
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return;
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}
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//
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// subdivided sky warp
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//
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if (s->flags & SURF_DRAWSKY)
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{
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GL_Bind (solidskytexture);
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speedscale = realtime*8;
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speedscale -= (int)speedscale;
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EmitSkyPolys (s);
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glEnable (GL_BLEND);
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glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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GL_Bind (alphaskytexture);
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speedscale = realtime*16;
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speedscale -= (int)speedscale;
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EmitSkyPolys (s);
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if (gl_lightmap_format == GL_LUMINANCE)
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glBlendFunc (GL_ZERO, GL_ONE_MINUS_SRC_COLOR);
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glDisable (GL_BLEND);
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}
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//
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// underwater warped with lightmap
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//
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p = s->polys;
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t = R_TextureAnimation (s->texinfo->texture);
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GL_Bind (t->gl_texturenum);
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DrawGLWaterPoly (p);
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GL_Bind (lightmap_textures + s->lightmaptexturenum);
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glEnable (GL_BLEND);
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DrawGLWaterPolyLightmap (p);
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glDisable (GL_BLEND);
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}
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#else
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/*
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================
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R_DrawSequentialPoly
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Systems that have fast state and texture changes can
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just do everything as it passes with no need to sort
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================
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*/
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void R_DrawSequentialPoly (msurface_t *s)
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{
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glpoly_t *p;
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float *v;
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int i;
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texture_t *t;
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vec3_t nv, dir;
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float ss, ss2, length;
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float s1, t1;
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glRect_t *theRect;
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//
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// normal lightmaped poly
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//
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if (! (s->flags & (SURF_DRAWSKY|SURF_DRAWTURB|SURF_UNDERWATER) ) )
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{
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R_RenderDynamicLightmaps (s);
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if (gl_mtexable) {
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p = s->polys;
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t = R_TextureAnimation (s->texinfo->texture);
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// Binds world to texture env 0
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GL_SelectTexture(TEXTURE0_SGIS);
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GL_Bind (t->gl_texturenum);
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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// Binds lightmap to texenv 1
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GL_EnableMultitexture(); // Same as SelectTexture (TEXTURE1)
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GL_Bind (lightmap_textures + s->lightmaptexturenum);
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i = s->lightmaptexturenum;
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if (lightmap_modified[i])
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{
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lightmap_modified[i] = false;
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theRect = &lightmap_rectchange[i];
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glTexSubImage2D(GL_TEXTURE_2D, 0, 0, theRect->t,
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BLOCK_WIDTH, theRect->h, gl_lightmap_format, GL_UNSIGNED_BYTE,
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lightmaps+(i* BLOCK_HEIGHT + theRect->t) *BLOCK_WIDTH*lightmap_bytes);
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theRect->l = BLOCK_WIDTH;
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theRect->t = BLOCK_HEIGHT;
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theRect->h = 0;
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theRect->w = 0;
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}
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_BLEND);
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glBegin(GL_POLYGON);
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v = p->verts[0];
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for (i=0 ; i<p->numverts ; i++, v+= VERTEXSIZE)
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{
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qglMTexCoord2fSGIS (TEXTURE0_SGIS, v[3], v[4]);
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qglMTexCoord2fSGIS (TEXTURE1_SGIS, v[5], v[6]);
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glVertex3fv (v);
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}
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glEnd ();
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return;
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} else {
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p = s->polys;
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t = R_TextureAnimation (s->texinfo->texture);
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GL_Bind (t->gl_texturenum);
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glBegin (GL_POLYGON);
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v = p->verts[0];
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for (i=0 ; i<p->numverts ; i++, v+= VERTEXSIZE)
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{
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glTexCoord2f (v[3], v[4]);
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glVertex3fv (v);
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}
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glEnd ();
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GL_Bind (lightmap_textures + s->lightmaptexturenum);
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glEnable (GL_BLEND);
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glBegin (GL_POLYGON);
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v = p->verts[0];
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for (i=0 ; i<p->numverts ; i++, v+= VERTEXSIZE)
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{
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glTexCoord2f (v[5], v[6]);
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glVertex3fv (v);
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}
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glEnd ();
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glDisable (GL_BLEND);
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}
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return;
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}
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//
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// subdivided water surface warp
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//
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if (s->flags & SURF_DRAWTURB)
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{
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GL_DisableMultitexture();
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GL_Bind (s->texinfo->texture->gl_texturenum);
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EmitWaterPolys (s);
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return;
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}
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//
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// subdivided sky warp
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//
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if (s->flags & SURF_DRAWSKY)
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{
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GL_DisableMultitexture();
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GL_Bind (solidskytexture);
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speedscale = realtime*8;
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speedscale -= (int)speedscale & ~127;
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EmitSkyPolys (s);
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glEnable (GL_BLEND);
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GL_Bind (alphaskytexture);
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speedscale = realtime*16;
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speedscale -= (int)speedscale & ~127;
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EmitSkyPolys (s);
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glDisable (GL_BLEND);
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return;
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}
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//
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// underwater warped with lightmap
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//
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R_RenderDynamicLightmaps (s);
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if (gl_mtexable) {
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p = s->polys;
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t = R_TextureAnimation (s->texinfo->texture);
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GL_SelectTexture(TEXTURE0_SGIS);
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GL_Bind (t->gl_texturenum);
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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GL_EnableMultitexture();
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GL_Bind (lightmap_textures + s->lightmaptexturenum);
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i = s->lightmaptexturenum;
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if (lightmap_modified[i])
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{
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lightmap_modified[i] = false;
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theRect = &lightmap_rectchange[i];
|
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glTexSubImage2D(GL_TEXTURE_2D, 0, 0, theRect->t,
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BLOCK_WIDTH, theRect->h, gl_lightmap_format, GL_UNSIGNED_BYTE,
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lightmaps+(i* BLOCK_HEIGHT + theRect->t) *BLOCK_WIDTH*lightmap_bytes);
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theRect->l = BLOCK_WIDTH;
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theRect->t = BLOCK_HEIGHT;
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theRect->h = 0;
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theRect->w = 0;
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}
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_BLEND);
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glBegin (GL_TRIANGLE_FAN);
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|
v = p->verts[0];
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for (i=0 ; i<p->numverts ; i++, v+= VERTEXSIZE)
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{
|
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qglMTexCoord2fSGIS (TEXTURE0_SGIS, v[3], v[4]);
|
|
qglMTexCoord2fSGIS (TEXTURE1_SGIS, v[5], v[6]);
|
|
|
|
nv[0] = v[0] + 8*sin(v[1]*0.05+realtime)*sin(v[2]*0.05+realtime);
|
|
nv[1] = v[1] + 8*sin(v[0]*0.05+realtime)*sin(v[2]*0.05+realtime);
|
|
nv[2] = v[2];
|
|
|
|
glVertex3fv (nv);
|
|
}
|
|
glEnd ();
|
|
|
|
} else {
|
|
p = s->polys;
|
|
|
|
t = R_TextureAnimation (s->texinfo->texture);
|
|
GL_Bind (t->gl_texturenum);
|
|
DrawGLWaterPoly (p);
|
|
|
|
GL_Bind (lightmap_textures + s->lightmaptexturenum);
|
|
glEnable (GL_BLEND);
|
|
DrawGLWaterPolyLightmap (p);
|
|
glDisable (GL_BLEND);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
/*
|
|
================
|
|
DrawGLWaterPoly
|
|
|
|
Warp the vertex coordinates
|
|
================
|
|
*/
|
|
void DrawGLWaterPoly (glpoly_t *p)
|
|
{
|
|
int i;
|
|
float *v;
|
|
float s, t, os, ot;
|
|
vec3_t nv;
|
|
|
|
GL_DisableMultitexture();
|
|
|
|
glBegin (GL_TRIANGLE_FAN);
|
|
v = p->verts[0];
|
|
for (i=0 ; i<p->numverts ; i++, v+= VERTEXSIZE)
|
|
{
|
|
glTexCoord2f (v[3], v[4]);
|
|
|
|
nv[0] = v[0] + 8*sin(v[1]*0.05+realtime)*sin(v[2]*0.05+realtime);
|
|
nv[1] = v[1] + 8*sin(v[0]*0.05+realtime)*sin(v[2]*0.05+realtime);
|
|
nv[2] = v[2];
|
|
|
|
glVertex3fv (nv);
|
|
}
|
|
glEnd ();
|
|
}
|
|
|
|
void DrawGLWaterPolyLightmap (glpoly_t *p)
|
|
{
|
|
int i;
|
|
float *v;
|
|
float s, t, os, ot;
|
|
vec3_t nv;
|
|
|
|
GL_DisableMultitexture();
|
|
|
|
glBegin (GL_TRIANGLE_FAN);
|
|
v = p->verts[0];
|
|
for (i=0 ; i<p->numverts ; i++, v+= VERTEXSIZE)
|
|
{
|
|
glTexCoord2f (v[5], v[6]);
|
|
|
|
nv[0] = v[0] + 8*sin(v[1]*0.05+realtime)*sin(v[2]*0.05+realtime);
|
|
nv[1] = v[1] + 8*sin(v[0]*0.05+realtime)*sin(v[2]*0.05+realtime);
|
|
nv[2] = v[2];
|
|
|
|
glVertex3fv (nv);
|
|
}
|
|
glEnd ();
|
|
}
|
|
|
|
/*
|
|
================
|
|
DrawGLPoly
|
|
================
|
|
*/
|
|
void DrawGLPoly (glpoly_t *p)
|
|
{
|
|
int i;
|
|
float *v;
|
|
|
|
glBegin (GL_POLYGON);
|
|
v = p->verts[0];
|
|
for (i=0 ; i<p->numverts ; i++, v+= VERTEXSIZE)
|
|
{
|
|
glTexCoord2f (v[3], v[4]);
|
|
glVertex3fv (v);
|
|
}
|
|
glEnd ();
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
R_BlendLightmaps
|
|
================
|
|
*/
|
|
void R_BlendLightmaps (void)
|
|
{
|
|
int i, j;
|
|
glpoly_t *p;
|
|
float *v;
|
|
glRect_t *theRect;
|
|
|
|
if (r_fullbright.value)
|
|
return;
|
|
if (!gl_texsort.value)
|
|
return;
|
|
|
|
glDepthMask (0); // don't bother writing Z
|
|
|
|
if (gl_lightmap_format == GL_LUMINANCE)
|
|
glBlendFunc (GL_ZERO, GL_ONE_MINUS_SRC_COLOR);
|
|
else if (gl_lightmap_format == GL_INTENSITY)
|
|
{
|
|
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
|
glColor4f (0,0,0,1);
|
|
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
}
|
|
|
|
if (!r_lightmap.value)
|
|
{
|
|
glEnable (GL_BLEND);
|
|
}
|
|
|
|
for (i=0 ; i<MAX_LIGHTMAPS ; i++)
|
|
{
|
|
p = lightmap_polys[i];
|
|
if (!p)
|
|
continue;
|
|
GL_Bind(lightmap_textures+i);
|
|
if (lightmap_modified[i])
|
|
{
|
|
lightmap_modified[i] = false;
|
|
theRect = &lightmap_rectchange[i];
|
|
// glTexImage2D (GL_TEXTURE_2D, 0, lightmap_bytes
|
|
// , BLOCK_WIDTH, BLOCK_HEIGHT, 0,
|
|
// gl_lightmap_format, GL_UNSIGNED_BYTE, lightmaps+i*BLOCK_WIDTH*BLOCK_HEIGHT*lightmap_bytes);
|
|
// glTexImage2D (GL_TEXTURE_2D, 0, lightmap_bytes
|
|
// , BLOCK_WIDTH, theRect->h, 0,
|
|
// gl_lightmap_format, GL_UNSIGNED_BYTE, lightmaps+(i*BLOCK_HEIGHT+theRect->t)*BLOCK_WIDTH*lightmap_bytes);
|
|
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, theRect->t,
|
|
BLOCK_WIDTH, theRect->h, gl_lightmap_format, GL_UNSIGNED_BYTE,
|
|
lightmaps+(i* BLOCK_HEIGHT + theRect->t) *BLOCK_WIDTH*lightmap_bytes);
|
|
theRect->l = BLOCK_WIDTH;
|
|
theRect->t = BLOCK_HEIGHT;
|
|
theRect->h = 0;
|
|
theRect->w = 0;
|
|
}
|
|
for ( ; p ; p=p->chain)
|
|
{
|
|
if (p->flags & SURF_UNDERWATER)
|
|
DrawGLWaterPolyLightmap (p);
|
|
else
|
|
{
|
|
glBegin (GL_POLYGON);
|
|
v = p->verts[0];
|
|
for (j=0 ; j<p->numverts ; j++, v+= VERTEXSIZE)
|
|
{
|
|
glTexCoord2f (v[5], v[6]);
|
|
glVertex3fv (v);
|
|
}
|
|
glEnd ();
|
|
}
|
|
}
|
|
}
|
|
|
|
glDisable (GL_BLEND);
|
|
if (gl_lightmap_format == GL_LUMINANCE)
|
|
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
else if (gl_lightmap_format == GL_INTENSITY)
|
|
{
|
|
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
|
glColor4f (1,1,1,1);
|
|
}
|
|
|
|
glDepthMask (1); // back to normal Z buffering
|
|
}
|
|
|
|
/*
|
|
================
|
|
R_RenderBrushPoly
|
|
================
|
|
*/
|
|
void R_RenderBrushPoly (msurface_t *fa)
|
|
{
|
|
texture_t *t;
|
|
byte *base;
|
|
int maps;
|
|
glRect_t *theRect;
|
|
int smax, tmax;
|
|
|
|
c_brush_polys++;
|
|
|
|
if (fa->flags & SURF_DRAWSKY)
|
|
{ // warp texture, no lightmaps
|
|
EmitBothSkyLayers (fa);
|
|
return;
|
|
}
|
|
|
|
t = R_TextureAnimation (fa->texinfo->texture);
|
|
GL_Bind (t->gl_texturenum);
|
|
|
|
if (fa->flags & SURF_DRAWTURB)
|
|
{ // warp texture, no lightmaps
|
|
EmitWaterPolys (fa);
|
|
return;
|
|
}
|
|
|
|
if (fa->flags & SURF_UNDERWATER)
|
|
DrawGLWaterPoly (fa->polys);
|
|
else
|
|
DrawGLPoly (fa->polys);
|
|
|
|
// add the poly to the proper lightmap chain
|
|
|
|
fa->polys->chain = lightmap_polys[fa->lightmaptexturenum];
|
|
lightmap_polys[fa->lightmaptexturenum] = fa->polys;
|
|
|
|
// check for lightmap modification
|
|
for (maps = 0 ; maps < MAXLIGHTMAPS && fa->styles[maps] != 255 ;
|
|
maps++)
|
|
if (d_lightstylevalue[fa->styles[maps]] != fa->cached_light[maps])
|
|
goto dynamic;
|
|
|
|
if (fa->dlightframe == r_framecount // dynamic this frame
|
|
|| fa->cached_dlight) // dynamic previously
|
|
{
|
|
dynamic:
|
|
if (r_dynamic.value)
|
|
{
|
|
lightmap_modified[fa->lightmaptexturenum] = true;
|
|
theRect = &lightmap_rectchange[fa->lightmaptexturenum];
|
|
if (fa->light_t < theRect->t) {
|
|
if (theRect->h)
|
|
theRect->h += theRect->t - fa->light_t;
|
|
theRect->t = fa->light_t;
|
|
}
|
|
if (fa->light_s < theRect->l) {
|
|
if (theRect->w)
|
|
theRect->w += theRect->l - fa->light_s;
|
|
theRect->l = fa->light_s;
|
|
}
|
|
smax = (fa->extents[0]>>4)+1;
|
|
tmax = (fa->extents[1]>>4)+1;
|
|
if ((theRect->w + theRect->l) < (fa->light_s + smax))
|
|
theRect->w = (fa->light_s-theRect->l)+smax;
|
|
if ((theRect->h + theRect->t) < (fa->light_t + tmax))
|
|
theRect->h = (fa->light_t-theRect->t)+tmax;
|
|
base = lightmaps + fa->lightmaptexturenum*lightmap_bytes*BLOCK_WIDTH*BLOCK_HEIGHT;
|
|
base += fa->light_t * BLOCK_WIDTH * lightmap_bytes + fa->light_s * lightmap_bytes;
|
|
R_BuildLightMap (fa, base, BLOCK_WIDTH*lightmap_bytes);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
R_RenderDynamicLightmaps
|
|
Multitexture
|
|
================
|
|
*/
|
|
void R_RenderDynamicLightmaps (msurface_t *fa)
|
|
{
|
|
texture_t *t;
|
|
byte *base;
|
|
int maps;
|
|
glRect_t *theRect;
|
|
int smax, tmax;
|
|
|
|
c_brush_polys++;
|
|
|
|
if (fa->flags & ( SURF_DRAWSKY | SURF_DRAWTURB) )
|
|
return;
|
|
|
|
fa->polys->chain = lightmap_polys[fa->lightmaptexturenum];
|
|
lightmap_polys[fa->lightmaptexturenum] = fa->polys;
|
|
|
|
// check for lightmap modification
|
|
for (maps = 0 ; maps < MAXLIGHTMAPS && fa->styles[maps] != 255 ;
|
|
maps++)
|
|
if (d_lightstylevalue[fa->styles[maps]] != fa->cached_light[maps])
|
|
goto dynamic;
|
|
|
|
if (fa->dlightframe == r_framecount // dynamic this frame
|
|
|| fa->cached_dlight) // dynamic previously
|
|
{
|
|
dynamic:
|
|
if (r_dynamic.value)
|
|
{
|
|
lightmap_modified[fa->lightmaptexturenum] = true;
|
|
theRect = &lightmap_rectchange[fa->lightmaptexturenum];
|
|
if (fa->light_t < theRect->t) {
|
|
if (theRect->h)
|
|
theRect->h += theRect->t - fa->light_t;
|
|
theRect->t = fa->light_t;
|
|
}
|
|
if (fa->light_s < theRect->l) {
|
|
if (theRect->w)
|
|
theRect->w += theRect->l - fa->light_s;
|
|
theRect->l = fa->light_s;
|
|
}
|
|
smax = (fa->extents[0]>>4)+1;
|
|
tmax = (fa->extents[1]>>4)+1;
|
|
if ((theRect->w + theRect->l) < (fa->light_s + smax))
|
|
theRect->w = (fa->light_s-theRect->l)+smax;
|
|
if ((theRect->h + theRect->t) < (fa->light_t + tmax))
|
|
theRect->h = (fa->light_t-theRect->t)+tmax;
|
|
base = lightmaps + fa->lightmaptexturenum*lightmap_bytes*BLOCK_WIDTH*BLOCK_HEIGHT;
|
|
base += fa->light_t * BLOCK_WIDTH * lightmap_bytes + fa->light_s * lightmap_bytes;
|
|
R_BuildLightMap (fa, base, BLOCK_WIDTH*lightmap_bytes);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
R_MirrorChain
|
|
================
|
|
*/
|
|
void R_MirrorChain (msurface_t *s)
|
|
{
|
|
if (mirror)
|
|
return;
|
|
mirror = true;
|
|
mirror_plane = s->plane;
|
|
}
|
|
|
|
|
|
#if 0
|
|
/*
|
|
================
|
|
R_DrawWaterSurfaces
|
|
================
|
|
*/
|
|
void R_DrawWaterSurfaces (void)
|
|
{
|
|
int i;
|
|
msurface_t *s;
|
|
texture_t *t;
|
|
|
|
if (r_wateralpha.value == 1.0)
|
|
return;
|
|
|
|
//
|
|
// go back to the world matrix
|
|
//
|
|
glLoadMatrixf (r_world_matrix);
|
|
|
|
glEnable (GL_BLEND);
|
|
glColor4f (1,1,1,r_wateralpha.value);
|
|
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
|
|
|
for (i=0 ; i<cl.worldmodel->numtextures ; i++)
|
|
{
|
|
t = cl.worldmodel->textures[i];
|
|
if (!t)
|
|
continue;
|
|
s = t->texturechain;
|
|
if (!s)
|
|
continue;
|
|
if ( !(s->flags & SURF_DRAWTURB) )
|
|
continue;
|
|
|
|
// set modulate mode explicitly
|
|
GL_Bind (t->gl_texturenum);
|
|
|
|
for ( ; s ; s=s->texturechain)
|
|
R_RenderBrushPoly (s);
|
|
|
|
t->texturechain = NULL;
|
|
}
|
|
|
|
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
|
|
|
glColor4f (1,1,1,1);
|
|
glDisable (GL_BLEND);
|
|
}
|
|
#else
|
|
/*
|
|
================
|
|
R_DrawWaterSurfaces
|
|
================
|
|
*/
|
|
void R_DrawWaterSurfaces (void)
|
|
{
|
|
int i;
|
|
msurface_t *s;
|
|
texture_t *t;
|
|
|
|
if (r_wateralpha.value == 1.0 && gl_texsort.value)
|
|
return;
|
|
|
|
//
|
|
// go back to the world matrix
|
|
//
|
|
|
|
glLoadMatrixf (r_world_matrix);
|
|
|
|
if (r_wateralpha.value < 1.0) {
|
|
glEnable (GL_BLEND);
|
|
glColor4f (1,1,1,r_wateralpha.value);
|
|
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
|
}
|
|
|
|
if (!gl_texsort.value) {
|
|
if (!waterchain)
|
|
return;
|
|
|
|
for ( s = waterchain ; s ; s=s->texturechain) {
|
|
GL_Bind (s->texinfo->texture->gl_texturenum);
|
|
EmitWaterPolys (s);
|
|
}
|
|
|
|
waterchain = NULL;
|
|
} else {
|
|
|
|
for (i=0 ; i<cl.worldmodel->numtextures ; i++)
|
|
{
|
|
t = cl.worldmodel->textures[i];
|
|
if (!t)
|
|
continue;
|
|
s = t->texturechain;
|
|
if (!s)
|
|
continue;
|
|
if ( !(s->flags & SURF_DRAWTURB ) )
|
|
continue;
|
|
|
|
// set modulate mode explicitly
|
|
|
|
GL_Bind (t->gl_texturenum);
|
|
|
|
for ( ; s ; s=s->texturechain)
|
|
EmitWaterPolys (s);
|
|
|
|
t->texturechain = NULL;
|
|
}
|
|
|
|
}
|
|
|
|
if (r_wateralpha.value < 1.0) {
|
|
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
|
|
|
glColor4f (1,1,1,1);
|
|
glDisable (GL_BLEND);
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
================
|
|
DrawTextureChains
|
|
================
|
|
*/
|
|
void DrawTextureChains (void)
|
|
{
|
|
int i;
|
|
msurface_t *s;
|
|
texture_t *t;
|
|
|
|
if (!gl_texsort.value) {
|
|
GL_DisableMultitexture();
|
|
|
|
if (skychain) {
|
|
R_DrawSkyChain(skychain);
|
|
skychain = NULL;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
for (i=0 ; i<cl.worldmodel->numtextures ; i++)
|
|
{
|
|
t = cl.worldmodel->textures[i];
|
|
if (!t)
|
|
continue;
|
|
s = t->texturechain;
|
|
if (!s)
|
|
continue;
|
|
if (i == skytexturenum)
|
|
R_DrawSkyChain (s);
|
|
else if (i == mirrortexturenum && r_mirroralpha.value != 1.0)
|
|
{
|
|
R_MirrorChain (s);
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
if ((s->flags & SURF_DRAWTURB) && r_wateralpha.value != 1.0)
|
|
continue; // draw translucent water later
|
|
for ( ; s ; s=s->texturechain)
|
|
R_RenderBrushPoly (s);
|
|
}
|
|
|
|
t->texturechain = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
=================
|
|
R_DrawBrushModel
|
|
=================
|
|
*/
|
|
void R_DrawBrushModel (entity_t *e)
|
|
{
|
|
int j, k;
|
|
vec3_t mins, maxs;
|
|
int i, numsurfaces;
|
|
msurface_t *psurf;
|
|
float dot;
|
|
mplane_t *pplane;
|
|
model_t *clmodel;
|
|
qboolean rotated;
|
|
|
|
currententity = e;
|
|
currenttexture = -1;
|
|
|
|
clmodel = e->model;
|
|
|
|
if (e->angles[0] || e->angles[1] || e->angles[2])
|
|
{
|
|
rotated = true;
|
|
for (i=0 ; i<3 ; i++)
|
|
{
|
|
mins[i] = e->origin[i] - clmodel->radius;
|
|
maxs[i] = e->origin[i] + clmodel->radius;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
rotated = false;
|
|
VectorAdd (e->origin, clmodel->mins, mins);
|
|
VectorAdd (e->origin, clmodel->maxs, maxs);
|
|
}
|
|
|
|
if (R_CullBox (mins, maxs))
|
|
return;
|
|
|
|
glColor3f (1,1,1);
|
|
memset (lightmap_polys, 0, sizeof(lightmap_polys));
|
|
|
|
VectorSubtract (r_refdef.vieworg, e->origin, modelorg);
|
|
if (rotated)
|
|
{
|
|
vec3_t temp;
|
|
vec3_t forward, right, up;
|
|
|
|
VectorCopy (modelorg, temp);
|
|
AngleVectors (e->angles, forward, right, up);
|
|
modelorg[0] = DotProduct (temp, forward);
|
|
modelorg[1] = -DotProduct (temp, right);
|
|
modelorg[2] = DotProduct (temp, up);
|
|
}
|
|
|
|
psurf = &clmodel->surfaces[clmodel->firstmodelsurface];
|
|
|
|
// calculate dynamic lighting for bmodel if it's not an
|
|
// instanced model
|
|
if (clmodel->firstmodelsurface != 0 && !gl_flashblend.value)
|
|
{
|
|
for (k=0 ; k<MAX_DLIGHTS ; k++)
|
|
{
|
|
if ((cl_dlights[k].die < cl.time) ||
|
|
(!cl_dlights[k].radius))
|
|
continue;
|
|
|
|
R_MarkLights (&cl_dlights[k], 1<<k,
|
|
clmodel->nodes + clmodel->hulls[0].firstclipnode);
|
|
}
|
|
}
|
|
|
|
glPushMatrix ();
|
|
e->angles[0] = -e->angles[0]; // stupid quake bug
|
|
R_RotateForEntity (e);
|
|
e->angles[0] = -e->angles[0]; // stupid quake bug
|
|
|
|
//
|
|
// draw texture
|
|
//
|
|
for (i=0 ; i<clmodel->nummodelsurfaces ; i++, psurf++)
|
|
{
|
|
// find which side of the node we are on
|
|
pplane = psurf->plane;
|
|
|
|
dot = DotProduct (modelorg, pplane->normal) - pplane->dist;
|
|
|
|
// draw the polygon
|
|
if (((psurf->flags & SURF_PLANEBACK) && (dot < -BACKFACE_EPSILON)) ||
|
|
(!(psurf->flags & SURF_PLANEBACK) && (dot > BACKFACE_EPSILON)))
|
|
{
|
|
if (gl_texsort.value)
|
|
R_RenderBrushPoly (psurf);
|
|
else
|
|
R_DrawSequentialPoly (psurf);
|
|
}
|
|
}
|
|
|
|
R_BlendLightmaps ();
|
|
|
|
glPopMatrix ();
|
|
}
|
|
|
|
/*
|
|
=============================================================
|
|
|
|
WORLD MODEL
|
|
|
|
=============================================================
|
|
*/
|
|
|
|
/*
|
|
================
|
|
R_RecursiveWorldNode
|
|
================
|
|
*/
|
|
void R_RecursiveWorldNode (mnode_t *node)
|
|
{
|
|
int i, c, side, *pindex;
|
|
vec3_t acceptpt, rejectpt;
|
|
mplane_t *plane;
|
|
msurface_t *surf, **mark;
|
|
mleaf_t *pleaf;
|
|
double d, dot;
|
|
vec3_t mins, maxs;
|
|
|
|
if (node->contents == CONTENTS_SOLID)
|
|
return; // solid
|
|
|
|
if (node->visframe != r_visframecount)
|
|
return;
|
|
if (R_CullBox (node->minmaxs, node->minmaxs+3))
|
|
return;
|
|
|
|
// if a leaf node, draw stuff
|
|
if (node->contents < 0)
|
|
{
|
|
pleaf = (mleaf_t *)node;
|
|
|
|
mark = pleaf->firstmarksurface;
|
|
c = pleaf->nummarksurfaces;
|
|
|
|
if (c)
|
|
{
|
|
do
|
|
{
|
|
(*mark)->visframe = r_framecount;
|
|
mark++;
|
|
} while (--c);
|
|
}
|
|
|
|
// deal with model fragments in this leaf
|
|
if (pleaf->efrags)
|
|
R_StoreEfrags (&pleaf->efrags);
|
|
|
|
return;
|
|
}
|
|
|
|
// node is just a decision point, so go down the apropriate sides
|
|
|
|
// find which side of the node we are on
|
|
plane = node->plane;
|
|
|
|
switch (plane->type)
|
|
{
|
|
case PLANE_X:
|
|
dot = modelorg[0] - plane->dist;
|
|
break;
|
|
case PLANE_Y:
|
|
dot = modelorg[1] - plane->dist;
|
|
break;
|
|
case PLANE_Z:
|
|
dot = modelorg[2] - plane->dist;
|
|
break;
|
|
default:
|
|
dot = DotProduct (modelorg, plane->normal) - plane->dist;
|
|
break;
|
|
}
|
|
|
|
if (dot >= 0)
|
|
side = 0;
|
|
else
|
|
side = 1;
|
|
|
|
// recurse down the children, front side first
|
|
R_RecursiveWorldNode (node->children[side]);
|
|
|
|
// draw stuff
|
|
c = node->numsurfaces;
|
|
|
|
if (c)
|
|
{
|
|
surf = cl.worldmodel->surfaces + node->firstsurface;
|
|
|
|
if (dot < 0 -BACKFACE_EPSILON)
|
|
side = SURF_PLANEBACK;
|
|
else if (dot > BACKFACE_EPSILON)
|
|
side = 0;
|
|
{
|
|
for ( ; c ; c--, surf++)
|
|
{
|
|
if (surf->visframe != r_framecount)
|
|
continue;
|
|
|
|
// don't backface underwater surfaces, because they warp
|
|
if ( !(surf->flags & SURF_UNDERWATER) && ( (dot < 0) ^ !!(surf->flags & SURF_PLANEBACK)) )
|
|
continue; // wrong side
|
|
|
|
// if sorting by texture, just store it out
|
|
if (gl_texsort.value)
|
|
{
|
|
if (!mirror
|
|
|| surf->texinfo->texture != cl.worldmodel->textures[mirrortexturenum])
|
|
{
|
|
surf->texturechain = surf->texinfo->texture->texturechain;
|
|
surf->texinfo->texture->texturechain = surf;
|
|
}
|
|
} else if (surf->flags & SURF_DRAWSKY) {
|
|
surf->texturechain = skychain;
|
|
skychain = surf;
|
|
} else if (surf->flags & SURF_DRAWTURB) {
|
|
surf->texturechain = waterchain;
|
|
waterchain = surf;
|
|
} else
|
|
R_DrawSequentialPoly (surf);
|
|
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// recurse down the back side
|
|
R_RecursiveWorldNode (node->children[!side]);
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
=============
|
|
R_DrawWorld
|
|
=============
|
|
*/
|
|
void R_DrawWorld (void)
|
|
{
|
|
entity_t ent;
|
|
int i;
|
|
|
|
memset (&ent, 0, sizeof(ent));
|
|
ent.model = cl.worldmodel;
|
|
|
|
VectorCopy (r_refdef.vieworg, modelorg);
|
|
|
|
currententity = &ent;
|
|
currenttexture = -1;
|
|
|
|
glColor3f (1,1,1);
|
|
memset (lightmap_polys, 0, sizeof(lightmap_polys));
|
|
#ifdef QUAKE2
|
|
R_ClearSkyBox ();
|
|
#endif
|
|
|
|
R_RecursiveWorldNode (cl.worldmodel->nodes);
|
|
|
|
DrawTextureChains ();
|
|
|
|
R_BlendLightmaps ();
|
|
|
|
#ifdef QUAKE2
|
|
R_DrawSkyBox ();
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
R_MarkLeaves
|
|
===============
|
|
*/
|
|
void R_MarkLeaves (void)
|
|
{
|
|
byte *vis;
|
|
mnode_t *node;
|
|
int i;
|
|
byte solid[4096];
|
|
|
|
if (r_oldviewleaf == r_viewleaf && !r_novis.value)
|
|
return;
|
|
|
|
if (mirror)
|
|
return;
|
|
|
|
r_visframecount++;
|
|
r_oldviewleaf = r_viewleaf;
|
|
|
|
if (r_novis.value)
|
|
{
|
|
vis = solid;
|
|
memset (solid, 0xff, (cl.worldmodel->numleafs+7)>>3);
|
|
}
|
|
else
|
|
vis = Mod_LeafPVS (r_viewleaf, cl.worldmodel);
|
|
|
|
for (i=0 ; i<cl.worldmodel->numleafs ; i++)
|
|
{
|
|
if (vis[i>>3] & (1<<(i&7)))
|
|
{
|
|
node = (mnode_t *)&cl.worldmodel->leafs[i+1];
|
|
do
|
|
{
|
|
if (node->visframe == r_visframecount)
|
|
break;
|
|
node->visframe = r_visframecount;
|
|
node = node->parent;
|
|
} while (node);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
=============================================================================
|
|
|
|
LIGHTMAP ALLOCATION
|
|
|
|
=============================================================================
|
|
*/
|
|
|
|
// returns a texture number and the position inside it
|
|
int AllocBlock (int w, int h, int *x, int *y)
|
|
{
|
|
int i, j;
|
|
int best, best2;
|
|
int bestx;
|
|
int texnum;
|
|
|
|
for (texnum=0 ; texnum<MAX_LIGHTMAPS ; texnum++)
|
|
{
|
|
best = BLOCK_HEIGHT;
|
|
|
|
for (i=0 ; i<BLOCK_WIDTH-w ; i++)
|
|
{
|
|
best2 = 0;
|
|
|
|
for (j=0 ; j<w ; j++)
|
|
{
|
|
if (allocated[texnum][i+j] >= best)
|
|
break;
|
|
if (allocated[texnum][i+j] > best2)
|
|
best2 = allocated[texnum][i+j];
|
|
}
|
|
if (j == w)
|
|
{ // this is a valid spot
|
|
*x = i;
|
|
*y = best = best2;
|
|
}
|
|
}
|
|
|
|
if (best + h > BLOCK_HEIGHT)
|
|
continue;
|
|
|
|
for (i=0 ; i<w ; i++)
|
|
allocated[texnum][*x + i] = best + h;
|
|
|
|
return texnum;
|
|
}
|
|
|
|
Sys_Error ("AllocBlock: full");
|
|
}
|
|
|
|
|
|
mvertex_t *r_pcurrentvertbase;
|
|
model_t *currentmodel;
|
|
|
|
int nColinElim;
|
|
|
|
/*
|
|
================
|
|
BuildSurfaceDisplayList
|
|
================
|
|
*/
|
|
void BuildSurfaceDisplayList (msurface_t *fa)
|
|
{
|
|
int i, lindex, lnumverts, s_axis, t_axis;
|
|
float dist, lastdist, lzi, scale, u, v, frac;
|
|
unsigned mask;
|
|
vec3_t local, transformed;
|
|
medge_t *pedges, *r_pedge;
|
|
mplane_t *pplane;
|
|
int vertpage, newverts, newpage, lastvert;
|
|
qboolean visible;
|
|
float *vec;
|
|
float s, t;
|
|
glpoly_t *poly;
|
|
|
|
// reconstruct the polygon
|
|
pedges = currentmodel->edges;
|
|
lnumverts = fa->numedges;
|
|
vertpage = 0;
|
|
|
|
//
|
|
// draw texture
|
|
//
|
|
poly = Hunk_Alloc (sizeof(glpoly_t) + (lnumverts-4) * VERTEXSIZE*sizeof(float));
|
|
poly->next = fa->polys;
|
|
poly->flags = fa->flags;
|
|
fa->polys = poly;
|
|
poly->numverts = lnumverts;
|
|
|
|
for (i=0 ; i<lnumverts ; i++)
|
|
{
|
|
lindex = currentmodel->surfedges[fa->firstedge + i];
|
|
|
|
if (lindex > 0)
|
|
{
|
|
r_pedge = &pedges[lindex];
|
|
vec = r_pcurrentvertbase[r_pedge->v[0]].position;
|
|
}
|
|
else
|
|
{
|
|
r_pedge = &pedges[-lindex];
|
|
vec = r_pcurrentvertbase[r_pedge->v[1]].position;
|
|
}
|
|
s = DotProduct (vec, fa->texinfo->vecs[0]) + fa->texinfo->vecs[0][3];
|
|
s /= fa->texinfo->texture->width;
|
|
|
|
t = DotProduct (vec, fa->texinfo->vecs[1]) + fa->texinfo->vecs[1][3];
|
|
t /= fa->texinfo->texture->height;
|
|
|
|
VectorCopy (vec, poly->verts[i]);
|
|
poly->verts[i][3] = s;
|
|
poly->verts[i][4] = t;
|
|
|
|
//
|
|
// lightmap texture coordinates
|
|
//
|
|
s = DotProduct (vec, fa->texinfo->vecs[0]) + fa->texinfo->vecs[0][3];
|
|
s -= fa->texturemins[0];
|
|
s += fa->light_s*16;
|
|
s += 8;
|
|
s /= BLOCK_WIDTH*16; //fa->texinfo->texture->width;
|
|
|
|
t = DotProduct (vec, fa->texinfo->vecs[1]) + fa->texinfo->vecs[1][3];
|
|
t -= fa->texturemins[1];
|
|
t += fa->light_t*16;
|
|
t += 8;
|
|
t /= BLOCK_HEIGHT*16; //fa->texinfo->texture->height;
|
|
|
|
poly->verts[i][5] = s;
|
|
poly->verts[i][6] = t;
|
|
}
|
|
|
|
//
|
|
// remove co-linear points - Ed
|
|
//
|
|
if (!gl_keeptjunctions.value && !(fa->flags & SURF_UNDERWATER) )
|
|
{
|
|
for (i = 0 ; i < lnumverts ; ++i)
|
|
{
|
|
vec3_t v1, v2;
|
|
float *prev, *this, *next;
|
|
float f;
|
|
|
|
prev = poly->verts[(i + lnumverts - 1) % lnumverts];
|
|
this = poly->verts[i];
|
|
next = poly->verts[(i + 1) % lnumverts];
|
|
|
|
VectorSubtract( this, prev, v1 );
|
|
VectorNormalize( v1 );
|
|
VectorSubtract( next, prev, v2 );
|
|
VectorNormalize( v2 );
|
|
|
|
// skip co-linear points
|
|
#define COLINEAR_EPSILON 0.001
|
|
if ((fabs( v1[0] - v2[0] ) <= COLINEAR_EPSILON) &&
|
|
(fabs( v1[1] - v2[1] ) <= COLINEAR_EPSILON) &&
|
|
(fabs( v1[2] - v2[2] ) <= COLINEAR_EPSILON))
|
|
{
|
|
int j;
|
|
for (j = i + 1; j < lnumverts; ++j)
|
|
{
|
|
int k;
|
|
for (k = 0; k < VERTEXSIZE; ++k)
|
|
poly->verts[j - 1][k] = poly->verts[j][k];
|
|
}
|
|
--lnumverts;
|
|
++nColinElim;
|
|
// retry next vertex next time, which is now current vertex
|
|
--i;
|
|
}
|
|
}
|
|
}
|
|
poly->numverts = lnumverts;
|
|
|
|
}
|
|
|
|
/*
|
|
========================
|
|
GL_CreateSurfaceLightmap
|
|
========================
|
|
*/
|
|
void GL_CreateSurfaceLightmap (msurface_t *surf)
|
|
{
|
|
int smax, tmax, s, t, l, i;
|
|
byte *base;
|
|
|
|
if (surf->flags & (SURF_DRAWSKY|SURF_DRAWTURB))
|
|
return;
|
|
|
|
smax = (surf->extents[0]>>4)+1;
|
|
tmax = (surf->extents[1]>>4)+1;
|
|
|
|
surf->lightmaptexturenum = AllocBlock (smax, tmax, &surf->light_s, &surf->light_t);
|
|
base = lightmaps + surf->lightmaptexturenum*lightmap_bytes*BLOCK_WIDTH*BLOCK_HEIGHT;
|
|
base += (surf->light_t * BLOCK_WIDTH + surf->light_s) * lightmap_bytes;
|
|
R_BuildLightMap (surf, base, BLOCK_WIDTH*lightmap_bytes);
|
|
}
|
|
|
|
|
|
/*
|
|
==================
|
|
GL_BuildLightmaps
|
|
|
|
Builds the lightmap texture
|
|
with all the surfaces from all brush models
|
|
==================
|
|
*/
|
|
void GL_BuildLightmaps (void)
|
|
{
|
|
int i, j;
|
|
model_t *m;
|
|
extern qboolean isPermedia;
|
|
|
|
memset (allocated, 0, sizeof(allocated));
|
|
|
|
r_framecount = 1; // no dlightcache
|
|
|
|
if (!lightmap_textures)
|
|
{
|
|
lightmap_textures = texture_extension_number;
|
|
texture_extension_number += MAX_LIGHTMAPS;
|
|
}
|
|
|
|
gl_lightmap_format = GL_LUMINANCE;
|
|
// default differently on the Permedia
|
|
if (isPermedia)
|
|
gl_lightmap_format = GL_RGBA;
|
|
|
|
if (COM_CheckParm ("-lm_1"))
|
|
gl_lightmap_format = GL_LUMINANCE;
|
|
if (COM_CheckParm ("-lm_a"))
|
|
gl_lightmap_format = GL_ALPHA;
|
|
if (COM_CheckParm ("-lm_i"))
|
|
gl_lightmap_format = GL_INTENSITY;
|
|
if (COM_CheckParm ("-lm_2"))
|
|
gl_lightmap_format = GL_RGBA4;
|
|
if (COM_CheckParm ("-lm_4"))
|
|
gl_lightmap_format = GL_RGBA;
|
|
|
|
switch (gl_lightmap_format)
|
|
{
|
|
case GL_RGBA:
|
|
lightmap_bytes = 4;
|
|
break;
|
|
case GL_RGBA4:
|
|
lightmap_bytes = 2;
|
|
break;
|
|
case GL_LUMINANCE:
|
|
case GL_INTENSITY:
|
|
case GL_ALPHA:
|
|
lightmap_bytes = 1;
|
|
break;
|
|
}
|
|
|
|
for (j=1 ; j<MAX_MODELS ; j++)
|
|
{
|
|
m = cl.model_precache[j];
|
|
if (!m)
|
|
break;
|
|
if (m->name[0] == '*')
|
|
continue;
|
|
r_pcurrentvertbase = m->vertexes;
|
|
currentmodel = m;
|
|
for (i=0 ; i<m->numsurfaces ; i++)
|
|
{
|
|
GL_CreateSurfaceLightmap (m->surfaces + i);
|
|
if ( m->surfaces[i].flags & SURF_DRAWTURB )
|
|
continue;
|
|
#ifndef QUAKE2
|
|
if ( m->surfaces[i].flags & SURF_DRAWSKY )
|
|
continue;
|
|
#endif
|
|
BuildSurfaceDisplayList (m->surfaces + i);
|
|
}
|
|
}
|
|
|
|
if (!gl_texsort.value)
|
|
GL_SelectTexture(TEXTURE1_SGIS);
|
|
|
|
//
|
|
// upload all lightmaps that were filled
|
|
//
|
|
for (i=0 ; i<MAX_LIGHTMAPS ; i++)
|
|
{
|
|
if (!allocated[i][0])
|
|
break; // no more used
|
|
lightmap_modified[i] = false;
|
|
lightmap_rectchange[i].l = BLOCK_WIDTH;
|
|
lightmap_rectchange[i].t = BLOCK_HEIGHT;
|
|
lightmap_rectchange[i].w = 0;
|
|
lightmap_rectchange[i].h = 0;
|
|
GL_Bind(lightmap_textures + i);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
glTexImage2D (GL_TEXTURE_2D, 0, lightmap_bytes
|
|
, BLOCK_WIDTH, BLOCK_HEIGHT, 0,
|
|
gl_lightmap_format, GL_UNSIGNED_BYTE, lightmaps+i*BLOCK_WIDTH*BLOCK_HEIGHT*lightmap_bytes);
|
|
}
|
|
|
|
if (!gl_texsort.value)
|
|
GL_SelectTexture(TEXTURE0_SGIS);
|
|
|
|
}
|
|
|