+++ /dev/null
-#include "engine.h"
-
-enum
-{
- PVS_HIDE_GEOM = 1<<0,
- PVS_HIDE_BB = 1<<1
-};
-
-struct pvsnode
-{
- bvec edges;
- uchar flags;
- uint children;
-};
-
-static vector<pvsnode> origpvsnodes;
-
-static bool mergepvsnodes(pvsnode &p, pvsnode *children)
-{
- loopi(7) if(children[i].flags!=children[7].flags) return false;
- bvec bbs[4];
- loop(x, 2) loop(y, 2)
- {
- const bvec &lo = children[octaindex(2, x, y, 0)].edges,
- &hi = children[octaindex(2, x, y, 1)].edges;
- if(lo.x!=0xFF && (lo.x&0x11 || lo.y&0x11 || lo.z&0x11)) return false;
- if(hi.x!=0xFF && (hi.x&0x11 || hi.y&0x11 || hi.z&0x11)) return false;
-
-#define MERGEBBS(res, coord, row, col) \
- if(lo.coord==0xFF) \
- { \
- if(hi.coord!=0xFF) \
- { \
- res.coord = ((hi.coord&~0x11)>>1) + 0x44; \
- res.row = hi.row; \
- res.col = hi.col; \
- } \
- } \
- else if(hi.coord==0xFF) \
- { \
- res.coord = (lo.coord&0xEE)>>1; \
- res.row = lo.row; \
- res.col = lo.col; \
- } \
- else if(lo.row!=hi.row || lo.col!=hi.col || (lo.coord&0xF0)!=0x80 || (hi.coord&0xF)!=0) return false; \
- else \
- { \
- res.coord = ((lo.coord&~0xF1)>>1) | (((hi.coord&~0x1F)>>1) + 0x40); \
- res.row = lo.row; \
- res.col = lo.col; \
- }
-
- bvec &res = bbs[x + 2*y];
- MERGEBBS(res, z, x, y);
- res.x = lo.x;
- res.y = lo.y;
- }
- loop(x, 2)
- {
- bvec &lo = bbs[x], &hi = bbs[x+2];
- MERGEBBS(lo, y, x, z);
- }
- bvec &lo = bbs[0], &hi = bbs[1];
- MERGEBBS(p.edges, x, y, z);
-
- return true;
-}
-
-static void genpvsnodes(cube *c, int parent = 0, const ivec &co = ivec(0, 0, 0), int size = worldsize/2)
-{
- int index = origpvsnodes.length();
- loopi(8)
- {
- ivec o(i, co, size);
- pvsnode &n = origpvsnodes.add();
- n.flags = 0;
- n.children = 0;
- if(c[i].children || isempty(c[i]) || c[i].material&MAT_ALPHA) memset(n.edges.v, 0xFF, 3);
- else loopk(3)
- {
- uint face = c[i].faces[k];
- if(face==F_SOLID) n.edges[k] = 0x80;
- else
- {
- uchar low = max(max(face&0xF, (face>>8)&0xF), max((face>>16)&0xF, (face>>24)&0xF)),
- high = min(min((face>>4)&0xF, (face>>12)&0xF), min((face>>20)&0xF, (face>>28)&0xF));
- if(size<8)
- {
- if(low&((8/size)-1)) { low += 8/size - (low&((8/size)-1)); }
- if(high&((8/size)-1)) high &= ~(8/size-1);
- }
- if(low >= high) { memset(n.edges.v, 0xFF, 3); break; }
- n.edges[k] = low | (high<<4);
- }
- }
- }
- int branches = 0;
- loopi(8) if(c[i].children)
- {
- ivec o(i, co, size);
- genpvsnodes(c[i].children, index+i, o, size>>1);
- if(origpvsnodes[index+i].children) branches++;
- }
- if(!branches && mergepvsnodes(origpvsnodes[parent], &origpvsnodes[index])) origpvsnodes.setsize(index);
- else origpvsnodes[parent].children = index;
-}
-
-struct shaftplane
-{
- float r, c, offset;
- uchar rnear, cnear, rfar, cfar;
-};
-
-struct shaftbb
-{
- union
- {
- ushort v[6];
- struct { usvec min, max; };
- };
-
- shaftbb() {}
- shaftbb(const ivec &o, int size)
- {
- min.x = o.x;
- min.y = o.y;
- min.z = o.z;
- max.x = o.x + size;
- max.y = o.y + size;
- max.z = o.z + size;
- }
- shaftbb(const ivec &o, int size, const bvec &edges)
- {
- min.x = o.x + (size*(edges.x&0xF))/8;
- min.y = o.y + (size*(edges.y&0xF))/8;
- min.z = o.z + (size*(edges.z&0xF))/8;
- max.x = o.x + (size*(edges.x>>4))/8;
- max.y = o.y + (size*(edges.y>>4))/8;
- max.z = o.z + (size*(edges.z>>4))/8;
- }
-
- ushort &operator[](int i) { return v[i]; }
- ushort operator[](int i) const { return v[i]; }
-
- bool contains(const shaftbb &o) const
- {
- return min.x<=o.min.x && min.y<=o.min.y && min.z<=o.min.z &&
- max.x>=o.max.x && max.y>=o.max.y && max.z>=o.max.z;
- }
-
- bool outside(const ivec &o, int size) const
- {
- return o.x>=max.x || o.y>=max.y || o.z>=max.z ||
- o.x+size<=min.x || o.y+size<=min.y || o.z+size<=min.z;
- }
-
- bool outside(const shaftbb &o) const
- {
- return o.min.x>max.x || o.min.y>max.y || o.min.z>max.z ||
- o.max.x<min.x || o.max.y<min.y || o.max.z<min.z;
- }
-
- bool notinside(const shaftbb &o) const
- {
- return o.min.x<min.x || o.min.y<min.y || o.min.z<min.z ||
- o.max.x>max.x || o.max.y>max.y || o.max.z>max.z;
- }
-};
-
-struct shaft
-{
- shaftbb bounds;
- shaftplane planes[8];
- int numplanes;
-
- shaft(const shaftbb &from, const shaftbb &to)
- {
- calcshaft(from, to);
- }
-
- void calcshaft(const shaftbb &from, const shaftbb &to)
- {
- uchar match = 0, color = 0;
- loopi(3)
- {
- if(to.min[i] < from.min[i]) { color |= 1<<i; bounds.min[i] = 0; }
- else if(to.min[i] > from.min[i]) bounds.min[i] = to.min[i]+1;
- else { match |= 1<<i; bounds.min[i] = to.min[i]; }
-
- if(to.max[i] > from.max[i]) { color |= 8<<i; bounds.max[i] = USHRT_MAX; }
- else if(to.max[i] < from.max[i]) bounds.max[i] = to.max[i]-1;
- else { match |= 8<<i; bounds.max[i] = to.max[i]; }
- }
- numplanes = 0;
- loopi(5) if(!(match&(1<<i))) for(int j = i+1; j<6; j++) if(!(match&(1<<j)) && i+3!=j && ((color>>i)^(color>>j))&1)
- {
- int r = i%3, c = j%3, d = (r+1)%3;
- if(d==c) d = (c+1)%3;
- shaftplane &p = planes[numplanes++];
- p.r = from[j] - to[j];
- if(i<3 ? p.r >= 0 : p.r < 0)
- {
- p.r = -p.r;
- p.c = from[i] - to[i];
- }
- else p.c = to[i] - from[i];
- p.offset = -(from[i]*p.r + from[j]*p.c);
- p.rnear = p.r >= 0 ? r : 3+r;
- p.cnear = p.c >= 0 ? c : 3+c;
- p.rfar = p.r < 0 ? r : 3+r;
- p.cfar = p.c < 0 ? c : 3+c;
- }
- }
-
- bool outside(const shaftbb &o) const
- {
- if(bounds.outside(o)) return true;
-
- for(const shaftplane *p = planes; p < &planes[numplanes]; p++)
- {
- if(o[p->rnear]*p->r + o[p->cnear]*p->c + p->offset > 0) return true;
- }
- return false;
- }
-
- bool inside(const shaftbb &o) const
- {
- if(bounds.notinside(o)) return false;
-
- for(const shaftplane *p = planes; p < &planes[numplanes]; p++)
- {
- if(o[p->rfar]*p->r + o[p->cfar]*p->c + p->offset > 0) return false;
- }
- return true;
- }
-};
-
-struct pvsdata
-{
- int offset, len;
-
- pvsdata() {}
- pvsdata(int offset, int len) : offset(offset), len(len) {}
-};
-
-static vector<uchar> pvsbuf;
-
-static inline uint hthash(const pvsdata &k)
-{
- uint h = 5381;
- loopi(k.len) h = ((h<<5)+h)^pvsbuf[k.offset+i];
- return h;
-}
-
-static inline bool htcmp(const pvsdata &x, const pvsdata &y)
-{
- return x.len==y.len && !memcmp(&pvsbuf[x.offset], &pvsbuf[y.offset], x.len);
-}
-
-static SDL_mutex *pvsmutex = NULL;
-static hashtable<pvsdata, int> pvscompress;
-static vector<pvsdata> pvs;
-
-static SDL_mutex *viewcellmutex = NULL;
-struct viewcellrequest
-{
- int *result;
- ivec o;
- int size;
-};
-static vector<viewcellrequest> viewcellrequests;
-
-static bool genpvs_canceled = false;
-static int numviewcells = 0;
-
-VAR(maxpvsblocker, 1, 512, 1<<16);
-VAR(pvsleafsize, 1, 64, 1024);
-
-#define MAXWATERPVS 32
-
-static struct
-{
- int height;
- vector<materialsurface *> matsurfs;
-} waterplanes[MAXWATERPVS];
-static vector<materialsurface *> waterfalls;
-uint numwaterplanes = 0;
-
-struct pvsworker
-{
- pvsworker() : thread(NULL), pvsnodes(new pvsnode[origpvsnodes.length()])
- {
- }
- ~pvsworker()
- {
- delete[] pvsnodes;
- }
-
- SDL_Thread *thread;
- pvsnode *pvsnodes;
-
- shaftbb viewcellbb;
-
- pvsnode *levels[32];
- int curlevel;
- ivec origin;
-
- void resetlevels()
- {
- curlevel = worldscale;
- levels[curlevel] = &pvsnodes[0];
- origin = ivec(0, 0, 0);
- }
-
- int hasvoxel(const ivec &p, int coord, int dir, int ocoord = 0, int odir = 0, int *omin = NULL)
- {
- uint diff = (origin.x^p.x)|(origin.y^p.y)|(origin.z^p.z);
- if(diff >= uint(worldsize)) return 0;
- diff >>= curlevel;
- while(diff)
- {
- curlevel++;
- diff >>= 1;
- }
-
- pvsnode *cur = levels[curlevel];
- while(cur->children && !(cur->flags&PVS_HIDE_BB))
- {
- cur = &pvsnodes[cur->children];
- curlevel--;
- cur += ((p.z>>(curlevel-2))&4) | ((p.y>>(curlevel-1))&2) | ((p.x>>curlevel)&1);
- levels[curlevel] = cur;
- }
-
- origin = ivec(p.x&(~0U<<curlevel), p.y&(~0U<<curlevel), p.z&(~0U<<curlevel));
-
- if(cur->flags&PVS_HIDE_BB || cur->edges==bvec(0x80, 0x80, 0x80))
- {
- if(omin)
- {
- int step = origin[ocoord] + (odir<<curlevel) - p[ocoord] + odir - 1;
- if(odir ? step < *omin : step > *omin) *omin = step;
- }
- return origin[coord] + (dir<<curlevel) - p[coord] + dir - 1;
- }
-
- if(cur->edges.x==0xFF) return 0;
- ivec bbp(p);
- bbp.sub(origin);
- ivec bbmin, bbmax;
- bbmin.x = ((cur->edges.x&0xF)<<curlevel)/8;
- if(bbp.x < bbmin.x) return 0;
- bbmax.x = ((cur->edges.x>>4)<<curlevel)/8;
- if(bbp.x >= bbmax.x) return 0;
- bbmin.y = ((cur->edges.y&0xF)<<curlevel)/8;
- if(bbp.y < bbmin.y) return 0;
- bbmax.y = ((cur->edges.y>>4)<<curlevel)/8;
- if(bbp.y >= bbmax.y) return 0;
- bbmin.z = ((cur->edges.z&0xF)<<curlevel)/8;
- if(bbp.z < bbmin.z) return 0;
- bbmax.z = ((cur->edges.z>>4)<<curlevel)/8;
- if(bbp.z >= bbmax.z) return 0;
-
- if(omin)
- {
- int step = (odir ? bbmax[ocoord] : bbmin[ocoord]) - bbp[ocoord] + (odir - 1);
- if(odir ? step < *omin : step > *omin) *omin = step;
- }
- return (dir ? bbmax[coord] : bbmin[coord]) - bbp[coord] + (dir - 1);
- }
-
- void hidepvs(pvsnode &p)
- {
- if(p.children)
- {
- pvsnode *children = &pvsnodes[p.children];
- loopi(8) hidepvs(children[i]);
- p.flags |= PVS_HIDE_BB;
- return;
- }
- p.flags |= PVS_HIDE_BB;
- if(p.edges.x!=0xFF) p.flags |= PVS_HIDE_GEOM;
- }
-
- void shaftcullpvs(shaft &s, pvsnode &p, const ivec &co = ivec(0, 0, 0), int size = worldsize)
- {
- if(p.flags&PVS_HIDE_BB) return;
- shaftbb bb(co, size);
- if(s.outside(bb)) return;
- if(s.inside(bb)) { hidepvs(p); return; }
- if(p.children)
- {
- pvsnode *children = &pvsnodes[p.children];
- uchar flags = 0xFF;
- loopi(8)
- {
- ivec o(i, co, size>>1);
- shaftcullpvs(s, children[i], o, size>>1);
- flags &= children[i].flags;
- }
- if(flags & PVS_HIDE_BB) p.flags |= PVS_HIDE_BB;
- return;
- }
- if(p.edges.x==0xFF) return;
- shaftbb geom(co, size, p.edges);
- if(s.inside(geom)) p.flags |= PVS_HIDE_GEOM;
- }
-
- queue<shaftbb, 32> prevblockers;
-
- struct cullorder
- {
- int index, dist;
-
- cullorder() {}
- cullorder(int index, int dist) : index(index), dist(dist) {}
- };
-
- void cullpvs(pvsnode &p, const ivec &co = ivec(0, 0, 0), int size = worldsize)
- {
- if(p.flags&(PVS_HIDE_BB | PVS_HIDE_GEOM) || genpvs_canceled) return;
- if(p.children && !(p.flags&PVS_HIDE_BB))
- {
- pvsnode *children = &pvsnodes[p.children];
- int csize = size>>1;
- ivec dmin = ivec(co).add(csize>>1).sub(ivec(viewcellbb.min).add(ivec(viewcellbb.max)).shr(1)), dmax = ivec(dmin).add(csize);
- dmin.mul(dmin);
- dmax.mul(dmax);
- ivec diff = ivec(dmax).sub(dmin);
- cullorder order[8];
- int dir = 0;
- if(diff.x < 0) { diff.x = -diff.x; dir |= 1; }
- if(diff.y < 0) { diff.y = -diff.y; dir |= 2; }
- if(diff.z < 0) { diff.z = -diff.z; dir |= 4; }
- order[0] = cullorder(0, 0);
- order[7] = cullorder(7, diff.x + diff.y + diff.z);
- order[1] = cullorder(1, diff.x);
- order[2] = cullorder(2, diff.y);
- order[3] = cullorder(4, diff.z);
- if(order[2].dist < order[1].dist) swap(order[1], order[2]);
- if(order[3].dist < order[2].dist) swap(order[2], order[3]);
- if(order[2].dist < order[1].dist) swap(order[1], order[2]);
- cullorder dxy(order[1].index|order[2].index, order[1].dist+order[2].dist),
- dxz(order[1].index|order[3].index, order[1].dist+order[3].dist),
- dyz(order[2].index|order[3].index, order[2].dist+order[3].dist);
- int j;
- for(j = 4; j > 0 && dxy.dist < order[j-1].dist; --j) order[j] = order[j-1];
- order[j] = dxy;
- for(j = 5; j > 0 && dxz.dist < order[j-1].dist; --j) order[j] = order[j-1];
- order[j] = dxz;
- for(j = 6; j > 0 && dyz.dist < order[j-1].dist; --j) order[j] = order[j-1];
- order[j] = dyz;
- loopi(8)
- {
- int index = order[i].index^dir;
- ivec o(index, co, csize);
- cullpvs(children[index], o, csize);
- }
- if(!(p.flags & PVS_HIDE_BB)) return;
- }
- bvec edges = p.children ? bvec(0x80, 0x80, 0x80) : p.edges;
- if(edges.x==0xFF) return;
- shaftbb geom(co, size, edges);
- ivec diff = ivec(geom.max).sub(ivec(viewcellbb.min)).abs();
- cullorder order[3] = { cullorder(0, diff.x), cullorder(1, diff.y), cullorder(2, diff.z) };
- if(order[1].dist > order[0].dist) swap(order[0], order[1]);
- if(order[2].dist > order[1].dist) swap(order[1], order[2]);
- if(order[1].dist > order[0].dist) swap(order[0], order[1]);
- loopi(6)
- {
- int dim = order[i >= 3 ? i-3 : i].index, dc = (i >= 3) != (geom.max[dim] <= viewcellbb.min[dim]) ? 1 : 0, r = R[dim], c = C[dim];
- int ccenter = geom.min[c];
- if(geom.min[r]==geom.max[r] || geom.min[c]==geom.max[c]) continue;
- while(ccenter < geom.max[c])
- {
- ivec rmin;
- rmin[dim] = geom[dim + 3*dc] + (dc ? -1 : 0);
- rmin[r] = geom.min[r];
- rmin[c] = ccenter;
- ivec rmax = rmin;
- rmax[r] = geom.max[r] - 1;
- int rcenter = (rmin[r] + rmax[r])/2;
- resetlevels();
- for(int minstep = -1, maxstep = 1; (minstep || maxstep) && rmax[r] - rmin[r] < maxpvsblocker;)
- {
- if(minstep) minstep = hasvoxel(rmin, r, 0);
- if(maxstep) maxstep = hasvoxel(rmax, r, 1);
- rmin[r] += minstep;
- rmax[r] += maxstep;
- }
- rmin[r] = rcenter + (rmin[r] - rcenter)/2;
- rmax[r] = rcenter + (rmax[r] - rcenter)/2;
- if(rmin[r]>=geom.min[r] && rmax[r]<geom.max[r]) { rmin[r] = geom.min[r]; rmax[r] = geom.max[r] - 1; }
- ivec cmin = rmin, cmax = rmin;
- if(rmin[r]>=geom.min[r] && rmax[r]<geom.max[r])
- {
- cmin[c] = geom.min[c];
- cmax[c] = geom.max[c]-1;
- }
- int cminstep = -1, cmaxstep = 1;
- for(; (cminstep || cmaxstep) && cmax[c] - cmin[c] < maxpvsblocker;)
- {
- if(cminstep)
- {
- cmin[c] += cminstep; cminstep = INT_MIN;
- cmin[r] = rmin[r];
- resetlevels();
- for(int rstep = 1; rstep && cmin[r] <= rmax[r];)
- {
- rstep = hasvoxel(cmin, r, 1, c, 0, &cminstep);
- cmin[r] += rstep;
- }
- if(cmin[r] <= rmax[r]) cminstep = 0;
- }
- if(cmaxstep)
- {
- cmax[c] += cmaxstep; cmaxstep = INT_MAX;
- cmax[r] = rmin[r];
- resetlevels();
- for(int rstep = 1; rstep && cmax[r] <= rmax[r];)
- {
- rstep = hasvoxel(cmax, r, 1, c, 1, &cmaxstep);
- cmax[r] += rstep;
- }
- if(cmax[r] <= rmax[r]) cmaxstep = 0;
- }
- }
- if(!cminstep) cmin[c]++;
- if(!cmaxstep) cmax[c]--;
- ivec emin = rmin, emax = rmax;
- if(cmin[c]>=geom.min[c] && cmax[c]<geom.max[c])
- {
- if(emin[r]>geom.min[r]) emin[r] = geom.min[r];
- if(emax[r]<geom.max[r]-1) emax[r] = geom.max[r]-1;
- }
- int rminstep = -1, rmaxstep = 1;
- for(; (rminstep || rmaxstep) && emax[r] - emin[r] < maxpvsblocker;)
- {
- if(rminstep)
- {
- emin[r] += -1; rminstep = INT_MIN;
- emin[c] = cmin[c];
- resetlevels();
- for(int cstep = 1; cstep && emin[c] <= cmax[c];)
- {
- cstep = hasvoxel(emin, c, 1, r, 0, &rminstep);
- emin[c] += cstep;
- }
- if(emin[c] <= cmax[c]) rminstep = 0;
- }
- if(rmaxstep)
- {
- emax[r] += 1; rmaxstep = INT_MAX;
- emax[c] = cmin[c];
- resetlevels();
- for(int cstep = 1; cstep && emax[c] <= cmax[c];)
- {
- cstep = hasvoxel(emax, c, 1, r, 1, &rmaxstep);
- emax[c] += cstep;
- }
- if(emax[c] <= cmax[c]) rmaxstep = 0;
- }
- }
- if(!rminstep) emin[r]++;
- if(!rmaxstep) emax[r]--;
- shaftbb bb;
- bb.min[dim] = rmin[dim];
- bb.max[dim] = rmin[dim]+1;
- bb.min[r] = emin[r];
- bb.max[r] = emax[r]+1;
- bb.min[c] = cmin[c];
- bb.max[c] = cmax[c]+1;
- if(bb.min[dim] >= viewcellbb.max[dim] || bb.max[dim] <= viewcellbb.min[dim])
- {
- int ddir = bb.min[dim] >= viewcellbb.max[dim] ? 1 : -1,
- dval = ddir>0 ? USHRT_MAX-1 : 0,
- dlimit = maxpvsblocker,
- numsides = 0;
- loopj(4)
- {
- ivec dmax;
- int odim = j < 2 ? c : r;
- if(j&1)
- {
- if(bb.max[odim] >= viewcellbb.max[odim]) continue;
- dmax[odim] = bb.max[odim]-1;
- }
- else
- {
- if(bb.min[odim] <= viewcellbb.min[odim]) continue;
- dmax[odim] = bb.min[odim];
- }
- numsides++;
- dmax[dim] = bb.min[dim];
- int stepdim = j < 2 ? r : c, stepstart = bb.min[stepdim], stepend = bb.max[stepdim];
- int dstep = ddir;
- for(; dstep && ddir*(dmax[dim] - (int)bb.min[dim]) < dlimit;)
- {
- dmax[dim] += dstep; dstep = ddir > 0 ? INT_MAX : INT_MIN;
- dmax[stepdim] = stepstart;
- resetlevels();
- for(int step = 1; step && dmax[stepdim] < stepend;)
- {
- step = hasvoxel(dmax, stepdim, 1, dim, (ddir+1)/2, &dstep);
- dmax[stepdim] += step;
- }
- if(dmax[stepdim] < stepend) dstep = 0;
- }
- dlimit = min(dlimit, ddir*(dmax[dim] - (int)bb.min[dim]));
- if(!dstep) dmax[dim] -= ddir;
- if(ddir>0) dval = min(dval, dmax[dim]);
- else dval = max(dval, dmax[dim]);
- }
- if(numsides>0)
- {
- if(ddir>0) bb.max[dim] = dval+1;
- else bb.min[dim] = dval;
- }
- //printf("(%d,%d,%d) x %d,%d,%d, side %d, ccenter = %d, origin = (%d,%d,%d), size = %d\n", bb.min.x, bb.min.y, bb.min.z, bb.max.x-bb.min.x, bb.max.y-bb.min.y, bb.max.z-bb.min.z, i, ccenter, co.x, co.y, co.z, size);
- }
- bool dup = false;
- loopvj(prevblockers)
- {
- if(prevblockers[j].contains(bb)) { dup = true; break; }
- }
- if(!dup)
- {
- shaft s(viewcellbb, bb);
- shaftcullpvs(s, pvsnodes[0]);
- prevblockers.add(bb);
- }
- if(bb.contains(geom)) return;
- ccenter = cmax[c] + 1;
- }
- }
- }
-
- bool compresspvs(pvsnode &p, int size, int threshold)
- {
- if(!p.children) return true;
- if(p.flags&PVS_HIDE_BB) { p.children = 0; return true; }
- pvsnode *children = &pvsnodes[p.children];
- bool canreduce = true;
- loopi(8)
- {
- if(!compresspvs(children[i], size/2, threshold)) canreduce = false;
- }
- if(canreduce)
- {
- int hide = children[7].flags&PVS_HIDE_BB;
- loopi(7) if((children[i].flags&PVS_HIDE_BB)!=hide) canreduce = false;
- if(canreduce)
- {
- p.flags = (p.flags & ~PVS_HIDE_BB) | hide;
- p.children = 0;
- return true;
- }
- }
- if(size <= threshold)
- {
- p.children = 0;
- return true;
- }
- return false;
- }
-
- vector<uchar> outbuf;
-
- bool serializepvs(pvsnode &p, int storage = -1)
- {
- if(!p.children)
- {
- outbuf.add(0xFF);
- loopi(8) outbuf.add(p.flags&PVS_HIDE_BB ? 0xFF : 0);
- return true;
- }
- int index = outbuf.length();
- pvsnode *children = &pvsnodes[p.children];
- int i = 0;
- uchar leafvalues = 0;
- if(storage>=0)
- {
- for(; i < 8; i++)
- {
- pvsnode &child = children[i];
- if(child.flags&PVS_HIDE_BB) leafvalues |= 1<<i;
- else if(child.children) break;
- }
- if(i==8) { outbuf[storage] = leafvalues; return false; }
- // if offset won't fit, just mark the space as a visible to avoid problems
- int offset = (index - storage + 8)/9;
- if(offset>255) { outbuf[storage] = 0; return false; }
- outbuf[storage] = uchar(offset);
- }
- outbuf.add(0);
- loopj(8) outbuf.add(leafvalues&(1<<j) ? 0xFF : 0);
- uchar leafmask = (1<<i)-1;
- for(; i < 8; i++)
- {
- pvsnode &child = children[i];
- if(child.children) { if(!serializepvs(child, index+1+i)) leafmask |= 1<<i; }
- else { leafmask |= 1<<i; outbuf[index+1+i] = child.flags&PVS_HIDE_BB ? 0xFF : 0; }
- }
- outbuf[index] = leafmask;
- return true;
- }
-
- bool materialoccluded(pvsnode &p, const ivec &co, int size, const ivec &bbmin, const ivec &bbmax)
- {
- pvsnode *children = &pvsnodes[p.children];
- loopoctabox(co, size, bbmin, bbmax)
- {
- ivec o(i, co, size);
- if(children[i].flags & PVS_HIDE_BB) continue;
- if(!children[i].children || !materialoccluded(children[i], o, size/2, bbmin, bbmax)) return false;
- }
- return true;
- }
-
- bool materialoccluded(vector<materialsurface *> &matsurfs)
- {
- if(pvsnodes[0].flags & PVS_HIDE_BB) return true;
- if(!pvsnodes[0].children) return false;
- loopv(matsurfs)
- {
- materialsurface &m = *matsurfs[i];
- ivec bbmin(m.o), bbmax(m.o);
- int dim = dimension(m.orient);
- bbmin[dim] += dimcoord(m.orient) ? -2 : 2;
- bbmax[C[dim]] += m.csize;
- bbmax[R[dim]] += m.rsize;
- if(!materialoccluded(pvsnodes[0], ivec(0, 0, 0), worldsize/2, bbmin, bbmax)) return false;
- }
- return true;
- }
-
- int wateroccluded, waterbytes;
-
- void calcpvs(const ivec &co, int size)
- {
- loopk(3)
- {
- viewcellbb.min[k] = co[k];
- viewcellbb.max[k] = co[k]+size;
- }
- memcpy(pvsnodes, origpvsnodes.getbuf(), origpvsnodes.length()*sizeof(pvsnode));
- prevblockers.clear();
- cullpvs(pvsnodes[0]);
-
- wateroccluded = 0;
- loopi(numwaterplanes)
- {
- if(waterplanes[i].height < 0)
- {
- if(waterfalls.length() && materialoccluded(waterfalls)) wateroccluded |= 1<<i;
- }
- else if(waterplanes[i].matsurfs.length() && materialoccluded(waterplanes[i].matsurfs)) wateroccluded |= 1<<i;
- }
- waterbytes = 0;
- loopi(4) if(wateroccluded&(0xFF<<(i*8))) waterbytes = i+1;
-
- compresspvs(pvsnodes[0], worldsize, pvsleafsize);
- outbuf.setsize(0);
- serializepvs(pvsnodes[0]);
- }
-
- uchar *testviewcell(const ivec &co, int size, int *waterpvs = NULL, int *len = NULL)
- {
- calcpvs(co, size);
-
- uchar *buf = new uchar[outbuf.length()];
- memcpy(buf, outbuf.getbuf(), outbuf.length());
- if(waterpvs) *waterpvs = wateroccluded;
- if(len) *len = outbuf.length();
- return buf;
- }
-
- int genviewcell(const ivec &co, int size)
- {
- calcpvs(co, size);
-
- if(pvsmutex) SDL_LockMutex(pvsmutex);
- numviewcells++;
- pvsdata key(pvsbuf.length(), waterbytes + outbuf.length());
- loopi(waterbytes) pvsbuf.add((wateroccluded>>(i*8))&0xFF);
- pvsbuf.put(outbuf.getbuf(), outbuf.length());
- int *val = pvscompress.access(key);
- if(val) pvsbuf.setsize(key.offset);
- else
- {
- val = &pvscompress[key];
- *val = pvs.length();
- pvs.add(key);
- }
- if(pvsmutex) SDL_UnlockMutex(pvsmutex);
- return *val;
- }
-
- static int run(void *data)
- {
- pvsworker *w = (pvsworker *)data;
- SDL_LockMutex(viewcellmutex);
- while(viewcellrequests.length())
- {
- viewcellrequest req = viewcellrequests.pop();
- SDL_UnlockMutex(viewcellmutex);
- int result = w->genviewcell(req.o, req.size);
- SDL_LockMutex(viewcellmutex);
- *req.result = result;
- }
- SDL_UnlockMutex(viewcellmutex);
- return 0;
- }
-};
-
-struct viewcellnode
-{
- uchar leafmask;
- union viewcellchild
- {
- int pvs;
- viewcellnode *node;
- } children[8];
-
- viewcellnode() : leafmask(0xFF)
- {
- loopi(8) children[i].pvs = -1;
- }
- ~viewcellnode()
- {
- loopi(8) if(!(leafmask&(1<<i))) delete children[i].node;
- }
-};
-
-VARP(pvsthreads, 0, 0, 16);
-static vector<pvsworker *> pvsworkers;
-
-static volatile bool check_genpvs_progress = false;
-
-static Uint32 genpvs_timer(Uint32 interval, void *param)
-{
- check_genpvs_progress = true;
- return interval;
-}
-
-static int totalviewcells = 0;
-
-static void show_genpvs_progress(int unique = pvs.length(), int processed = numviewcells)
-{
- float bar1 = float(processed) / float(totalviewcells>0 ? totalviewcells : 1);
-
- defformatstring(text1, "%d%% - %d of %d view cells (%d unique)", int(bar1 * 100), processed, totalviewcells, unique);
-
- renderprogress(bar1, text1);
-
- if(interceptkey(SDLK_ESCAPE)) genpvs_canceled = true;
- check_genpvs_progress = false;
-}
-
-static shaftbb pvsbounds;
-
-static void calcpvsbounds()
-{
- loopk(3) pvsbounds.min[k] = USHRT_MAX;
- loopk(3) pvsbounds.max[k] = 0;
- loopv(valist)
- {
- vtxarray *va = valist[i];
- loopk(3)
- {
- if(va->geommin[k]>va->geommax[k]) continue;
- pvsbounds.min[k] = min(pvsbounds.min[k], (ushort)va->geommin[k]);
- pvsbounds.max[k] = max(pvsbounds.max[k], (ushort)va->geommax[k]);
- }
- }
-}
-
-static inline bool isallclip(cube *c)
-{
- loopi(8)
- {
- cube &h = c[i];
- if(h.children ? !isallclip(h.children) : (!isentirelysolid(h) && (h.material&MATF_CLIP)!=MAT_CLIP))
- return false;
- }
- return true;
-}
-
-static int countviewcells(cube *c, const ivec &co, int size, int threshold)
-{
- int count = 0;
- loopi(8)
- {
- ivec o(i, co, size);
- if(pvsbounds.outside(o, size)) continue;
- cube &h = c[i];
- if(h.children)
- {
- if(size>threshold)
- {
- count += countviewcells(h.children, o, size>>1, threshold);
- continue;
- }
- if(isallclip(h.children)) continue;
- }
- else if(isentirelysolid(h) || (h.material&MATF_CLIP)==MAT_CLIP) continue;
- count++;
- }
- return count;
-}
-
-static void genviewcells(viewcellnode &p, cube *c, const ivec &co, int size, int threshold)
-{
- if(genpvs_canceled) return;
- loopi(8)
- {
- ivec o(i, co, size);
- if(pvsbounds.outside(o, size)) continue;
- cube &h = c[i];
- if(h.children)
- {
- if(size>threshold)
- {
- p.leafmask &= ~(1<<i);
- p.children[i].node = new viewcellnode;
- genviewcells(*p.children[i].node, h.children, o, size>>1, threshold);
- continue;
- }
- if(isallclip(h.children)) continue;
- }
- else if(isentirelysolid(h) || (h.material&MATF_CLIP)==MAT_CLIP) continue;
- if(pvsworkers.length())
- {
- if(genpvs_canceled) return;
- p.children[i].pvs = pvsworkers[0]->genviewcell(o, size);
- if(check_genpvs_progress) show_genpvs_progress();
- }
- else
- {
- viewcellrequest &req = viewcellrequests.add();
- req.result = &p.children[i].pvs;
- req.o = o;
- req.size = size;
- }
- }
-}
-
-static viewcellnode *viewcells = NULL;
-static int lockedwaterplanes[MAXWATERPVS];
-static uchar *curpvs = NULL, *lockedpvs = NULL;
-static int curwaterpvs = 0, lockedwaterpvs = 0;
-
-static inline pvsdata *lookupviewcell(const vec &p)
-{
- uint x = uint(floor(p.x)), y = uint(floor(p.y)), z = uint(floor(p.z));
- if(!viewcells || (x|y|z)>=uint(worldsize)) return NULL;
- viewcellnode *vc = viewcells;
- for(int scale = worldscale-1; scale>=0; scale--)
- {
- int i = octastep(x, y, z, scale);
- if(vc->leafmask&(1<<i))
- {
- return vc->children[i].pvs>=0 ? &pvs[vc->children[i].pvs] : NULL;
- }
- vc = vc->children[i].node;
- }
- return NULL;
-}
-
-static void lockpvs_(bool lock)
-{
- if(lockedpvs) DELETEA(lockedpvs);
- if(!lock) return;
- pvsdata *d = lookupviewcell(camera1->o);
- if(!d) return;
- int wbytes = d->len%9, len = d->len - wbytes;
- lockedpvs = new uchar[len];
- memcpy(lockedpvs, &pvsbuf[d->offset + wbytes], len);
- lockedwaterpvs = 0;
- loopi(wbytes) lockedwaterpvs |= pvsbuf[d->offset + i] << (i*8);
- loopi(MAXWATERPVS) lockedwaterplanes[i] = waterplanes[i].height;
- conoutf("locked view cell at %.1f, %.1f, %.1f", camera1->o.x, camera1->o.y, camera1->o.z);
-}
-
-VARF(lockpvs, 0, 0, 1, lockpvs_(lockpvs!=0));
-
-VARN(pvs, usepvs, 0, 1, 1);
-VARN(waterpvs, usewaterpvs, 0, 1, 1);
-
-void setviewcell(const vec &p)
-{
- if(!usepvs) curpvs = NULL;
- else if(lockedpvs)
- {
- curpvs = lockedpvs;
- curwaterpvs = lockedwaterpvs;
- }
- else
- {
- pvsdata *d = lookupviewcell(p);
- curpvs = d ? &pvsbuf[d->offset] : NULL;
- curwaterpvs = 0;
- if(d)
- {
- loopi(d->len%9) curwaterpvs |= *curpvs++ << (i*8);
- }
- }
- if(!usepvs || !usewaterpvs) curwaterpvs = 0;
-}
-
-void clearpvs()
-{
- DELETEP(viewcells);
- pvs.setsize(0);
- pvsbuf.setsize(0);
- curpvs = NULL;
- numwaterplanes = 0;
- lockpvs = 0;
- lockpvs_(false);
-}
-
-COMMAND(clearpvs, "");
-
-static void findwaterplanes()
-{
- loopi(MAXWATERPVS)
- {
- waterplanes[i].height = -1;
- waterplanes[i].matsurfs.setsize(0);
- }
- waterfalls.setsize(0);
- numwaterplanes = 0;
- loopv(valist)
- {
- vtxarray *va = valist[i];
- loopj(va->matsurfs)
- {
- materialsurface &m = va->matbuf[j];
- if((m.material&MATF_VOLUME)!=MAT_WATER || m.orient==O_BOTTOM) { j += m.skip; continue; }
- if(m.orient!=O_TOP)
- {
- waterfalls.add(&m);
- continue;
- }
- loopk(numwaterplanes) if(waterplanes[k].height == m.o.z)
- {
- waterplanes[k].matsurfs.add(&m);
- goto nextmatsurf;
- }
- if(numwaterplanes < MAXWATERPVS)
- {
- waterplanes[numwaterplanes].height = m.o.z;
- waterplanes[numwaterplanes].matsurfs.add(&m);
- numwaterplanes++;
- }
- nextmatsurf:;
- }
- }
- if(waterfalls.length() > 0 && numwaterplanes < MAXWATERPVS) numwaterplanes++;
-}
-
-void testpvs(int *vcsize)
-{
- lockpvs_(false);
-
- uint oldnumwaterplanes = numwaterplanes;
- int oldwaterplanes[MAXWATERPVS];
- loopi(numwaterplanes) oldwaterplanes[i] = waterplanes[i].height;
-
- findwaterplanes();
-
- pvsnode &root = origpvsnodes.add();
- memset(root.edges.v, 0xFF, 3);
- root.flags = 0;
- root.children = 0;
- genpvsnodes(worldroot);
-
- genpvs_canceled = false;
- check_genpvs_progress = false;
-
- int size = *vcsize>0 ? *vcsize : 32;
- for(int mask = 1; mask < size; mask <<= 1) size &= ~mask;
-
- ivec o = ivec(camera1->o).mask(~(size-1));
- pvsworker w;
- int len;
- lockedpvs = w.testviewcell(o, size, &lockedwaterpvs, &len);
- loopi(MAXWATERPVS) lockedwaterplanes[i] = waterplanes[i].height;
- lockpvs = 1;
- conoutf("generated test view cell of size %d at %.1f, %.1f, %.1f (%d B)", size, camera1->o.x, camera1->o.y, camera1->o.z, len);
-
- origpvsnodes.setsize(0);
- numwaterplanes = oldnumwaterplanes;
- loopi(numwaterplanes) waterplanes[i].height = oldwaterplanes[i];
-}
-
-COMMAND(testpvs, "i");
-
-void genpvs(int *viewcellsize)
-{
- if(worldsize > 1<<15)
- {
- conoutf(CON_ERROR, "map is too large for PVS");
- return;
- }
-
- renderbackground("generating PVS (esc to abort)");
- genpvs_canceled = false;
- Uint32 start = SDL_GetTicks();
-
- renderprogress(0, "finding view cells");
-
- clearpvs();
- calcpvsbounds();
- findwaterplanes();
-
- pvsnode &root = origpvsnodes.add();
- memset(root.edges.v, 0xFF, 3);
- root.flags = 0;
- root.children = 0;
- genpvsnodes(worldroot);
-
- totalviewcells = countviewcells(worldroot, ivec(0, 0, 0), worldsize>>1, *viewcellsize>0 ? *viewcellsize : 32);
- numviewcells = 0;
- genpvs_canceled = false;
- check_genpvs_progress = false;
- SDL_TimerID timer = 0;
- int numthreads = pvsthreads > 0 ? pvsthreads : numcpus;
- if(numthreads<=1)
- {
- pvsworkers.add(new pvsworker);
- timer = SDL_AddTimer(500, genpvs_timer, NULL);
- }
- viewcells = new viewcellnode;
- genviewcells(*viewcells, worldroot, ivec(0, 0, 0), worldsize>>1, *viewcellsize>0 ? *viewcellsize : 32);
- if(numthreads<=1)
- {
- SDL_RemoveTimer(timer);
- }
- else
- {
- renderprogress(0, "creating threads");
- if(!pvsmutex) pvsmutex = SDL_CreateMutex();
- if(!viewcellmutex) viewcellmutex = SDL_CreateMutex();
- loopi(numthreads)
- {
- pvsworker *w = pvsworkers.add(new pvsworker);
- w->thread = SDL_CreateThread(pvsworker::run, "pvs worker", w);
- }
- show_genpvs_progress(0, 0);
- while(!genpvs_canceled)
- {
- SDL_Delay(500);
- SDL_LockMutex(viewcellmutex);
- int unique = pvs.length(), processed = numviewcells, remaining = viewcellrequests.length();
- SDL_UnlockMutex(viewcellmutex);
- show_genpvs_progress(unique, processed);
- if(!remaining) break;
- }
- SDL_LockMutex(viewcellmutex);
- viewcellrequests.setsize(0);
- SDL_UnlockMutex(viewcellmutex);
- loopv(pvsworkers) SDL_WaitThread(pvsworkers[i]->thread, NULL);
- }
- pvsworkers.deletecontents();
-
- origpvsnodes.setsize(0);
- pvscompress.clear();
-
- Uint32 end = SDL_GetTicks();
- if(genpvs_canceled)
- {
- clearpvs();
- conoutf("genpvs aborted");
- }
- else conoutf("generated %d unique view cells totaling %.1f kB and averaging %d B (%.1f seconds)",
- pvs.length(), pvsbuf.length()/1024.0f, pvsbuf.length()/max(pvs.length(), 1), (end - start) / 1000.0f);
-}
-
-COMMAND(genpvs, "i");
-
-void pvsstats()
-{
- conoutf("%d unique view cells totaling %.1f kB and averaging %d B",
- pvs.length(), pvsbuf.length()/1024.0f, pvsbuf.length()/max(pvs.length(), 1));
-}
-
-COMMAND(pvsstats, "");
-
-static inline bool pvsoccluded(uchar *buf, const ivec &co, int size, const ivec &bbmin, const ivec &bbmax)
-{
- uchar leafmask = buf[0];
- loopoctabox(co, size, bbmin, bbmax)
- {
- ivec o(i, co, size);
- if(leafmask&(1<<i))
- {
- uchar leafvalues = buf[1+i];
- if(!leafvalues || (leafvalues!=0xFF && octaboxoverlap(o, size>>1, bbmin, bbmax)&~leafvalues))
- return false;
- }
- else if(!pvsoccluded(buf+9*buf[1+i], o, size>>1, bbmin, bbmax)) return false;
- }
- return true;
-}
-
-static inline bool pvsoccluded(uchar *buf, const ivec &bbmin, const ivec &bbmax)
-{
- int diff = (bbmin.x^bbmax.x) | (bbmin.y^bbmax.y) | (bbmin.z^bbmax.z);
- if(diff&~((1<<worldscale)-1)) return false;
- int scale = worldscale-1;
- while(!(diff&(1<<scale)))
- {
- int i = octastep(bbmin.x, bbmin.y, bbmin.z, scale);
- scale--;
- uchar leafmask = buf[0];
- if(leafmask&(1<<i))
- {
- uchar leafvalues = buf[1+i];
- return leafvalues && (leafvalues==0xFF || !(octaboxoverlap(ivec(bbmin).mask(~((2<<scale)-1)), 1<<scale, bbmin, bbmax)&~leafvalues));
- }
- buf += 9*buf[1+i];
- }
- return pvsoccluded(buf, ivec(bbmin).mask(~((2<<scale)-1)), 1<<scale, bbmin, bbmax);
-}
-
-bool pvsoccluded(const ivec &bbmin, const ivec &bbmax)
-{
- return curpvs!=NULL && pvsoccluded(curpvs, bbmin, bbmax);
-}
-
-bool pvsoccludedsphere(const vec ¢er, float radius)
-{
- if(curpvs==NULL) return false;
- ivec bbmin(vec(center).sub(radius)), bbmax(vec(center).add(radius+1));
- return pvsoccluded(curpvs, bbmin, bbmax);
-}
-
-bool waterpvsoccluded(int height)
-{
- if(!curwaterpvs) return false;
- if(lockedpvs)
- {
- loopi(MAXWATERPVS) if(lockedwaterplanes[i]==height) return (curwaterpvs&(1<<i))!=0;
- }
- else
- {
- loopi(numwaterplanes) if(waterplanes[i].height==height) return (curwaterpvs&(1<<i))!=0;
- }
- return false;
-}
-
-void saveviewcells(stream *f, viewcellnode &p)
-{
- f->putchar(p.leafmask);
- loopi(8)
- {
- if(p.leafmask&(1<<i)) f->putlil<int>(p.children[i].pvs);
- else saveviewcells(f, *p.children[i].node);
- }
-}
-
-void savepvs(stream *f)
-{
- uint totallen = pvsbuf.length() | (numwaterplanes>0 ? 0x80000000U : 0);
- f->putlil<uint>(totallen);
- if(numwaterplanes>0)
- {
- f->putlil<uint>(numwaterplanes);
- loopi(numwaterplanes)
- {
- f->putlil<int>(waterplanes[i].height);
- if(waterplanes[i].height < 0) break;
- }
- }
- loopv(pvs) f->putlil<ushort>(pvs[i].len);
- f->write(pvsbuf.getbuf(), pvsbuf.length());
- saveviewcells(f, *viewcells);
-}
-
-viewcellnode *loadviewcells(stream *f)
-{
- viewcellnode *p = new viewcellnode;
- p->leafmask = f->getchar();
- loopi(8)
- {
- if(p->leafmask&(1<<i)) p->children[i].pvs = f->getlil<int>();
- else p->children[i].node = loadviewcells(f);
- }
- return p;
-}
-
-void loadpvs(stream *f, int numpvs)
-{
- uint totallen = f->getlil<uint>();
- if(totallen & 0x80000000U)
- {
- totallen &= ~0x80000000U;
- numwaterplanes = f->getlil<uint>();
- loopi(numwaterplanes) waterplanes[i].height = f->getlil<int>();
- }
- int offset = 0;
- loopi(numpvs)
- {
- ushort len = f->getlil<ushort>();
- pvs.add(pvsdata(offset, len));
- offset += len;
- }
- f->read(pvsbuf.reserve(totallen).buf, totallen);
- pvsbuf.advance(totallen);
- viewcells = loadviewcells(f);
-}
-
-int getnumviewcells() { return pvs.length(); }
-
projects / xolatile-badassbug.git / commitdiff