/* Copyright (c) 1998 Silicon Graphics, Inc. */ #ifndef lint static char SCCSid[] = "$SunId$ SGI"; #endif /* * sm_ogl.c */ #include "standard.h" #include #ifdef TEST_DRIVER #include #include #include #endif #include "sm_flag.h" #include "sm_list.h" #include "sm_geom.h" #include "sm_qtree.h" #include "sm_stree.h" #include "sm.h" #ifdef TEST_DRIVER #include "sm_draw.h" /*static char smClean_notify = TRUE; MAKE STATIC LATER: ui.c using for now; */ char smClean_notify = TRUE; #else static int smClean_notify = TRUE; #endif typedef struct { float dist; /* average distance */ BYTE rgb[3]; /* average color */ } QTRAVG; /* average quadtree value */ typedef struct { QUADTREE qt; /* quadtree node (key & hash value) */ QTRAVG av; /* node average */ } QT_LUENT; /* lookup table entry */ static QT_LUENT *qt_htbl = NULL; /* quadtree cache */ static int qt_hsiz = 0; /* quadtree cache size */ typedef struct _T_DEPTH { int tri; double depth; }T_DEPTH; /* * smClean(tmflag) : display has been wiped clean * int tmflag; * Called after display has been effectively cleared, meaning that all * geometry must be resent down the pipeline in the next call to smUpdate(). * If tmflag is set, tone-mapping should be performed */ smClean(tmflag) int tmflag; { smClean_notify = TRUE; if(tmflag) SM_TONE_MAP(smMesh) = 0; } int qtCache_init(nel) /* initialize for at least nel elements */ int nel; { static int hsiztab[] = { 8191, 16381, 32749, 65521, 131071, 262139, 524287, 1048573, 0 }; register int i; if (nel <= 0) { /* call to free table */ if (qt_hsiz) { free((char *)qt_htbl); qt_htbl = NULL; qt_hsiz = 0; } return(0); } nel += nel>>1; /* 66% occupancy */ for (i = 0; hsiztab[i]; i++) if (hsiztab[i] > nel) break; if (!(qt_hsiz = hsiztab[i])) qt_hsiz = nel*2 + 1; /* not always prime */ qt_htbl = (QT_LUENT *)calloc(qt_hsiz, sizeof(QT_LUENT)); if (qt_htbl == NULL) qt_hsiz = 0; for (i = qt_hsiz; i--; ) qt_htbl[i].qt = EMPTY; return(qt_hsiz); } QT_LUENT * qtCache_find(qt) /* find a quadtree table entry */ QUADTREE qt; { int i, n; register int ndx; register QT_LUENT *le; if (qt_hsiz == 0 && !qtCache_init(1)) return(NULL); tryagain: /* hash table lookup */ ndx = (unsigned long)qt % qt_hsiz; for (i = 0, n = 1; i < qt_hsiz; i++, n += 2) { le = &qt_htbl[ndx]; if (QT_IS_EMPTY(le->qt) || le->qt == qt) return(le); if ((ndx += n) >= qt_hsiz) /* this happens rarely */ ndx = ndx % qt_hsiz; } /* table is full, reallocate */ le = qt_htbl; ndx = qt_hsiz; if (!qtCache_init(ndx+1)) { /* no more memory! */ qt_htbl = le; qt_hsiz = ndx; return(NULL); } /* copy old table to new and free */ while (ndx--) if (!QT_IS_EMPTY(le[ndx].qt)) copystruct(qtCache_find(le[ndx].qt), &le[ndx]); free((char *)le); goto tryagain; /* should happen only once! */ } stCount_level_leaves(lcnt, qt) /* count quadtree leaf nodes at each level */ int lcnt[]; register QUADTREE qt; { if (QT_IS_EMPTY(qt)) return; if (QT_IS_TREE(qt)) { if (!QT_IS_FLAG(qt)) /* not in our frustum */ return; stCount_level_leaves(lcnt+1, QT_NTH_CHILD(qt,0)); stCount_level_leaves(lcnt+1, QT_NTH_CHILD(qt,1)); stCount_level_leaves(lcnt+1, QT_NTH_CHILD(qt,2)); stCount_level_leaves(lcnt+1, QT_NTH_CHILD(qt,3)); } else if(QT_LEAF_IS_FLAG(qt)) lcnt[0]++; } QTRAVG * qtRender_level(qt,v0,v1,v2,sm,lvl) QUADTREE qt; FVECT v0,v1,v2; SM *sm; int lvl; { FVECT a,b,c; register QT_LUENT *le; QTRAVG *rc[4]; TRI *tri; if (QT_IS_EMPTY(qt)) /* empty leaf node */ return(NULL); if (QT_IS_TREE(qt) && !QT_IS_FLAG(qt)) /* not in our frustum */ return(NULL); if(QT_IS_LEAF(qt) && !QT_LEAF_IS_FLAG(qt)) /* not in our frustum */ return(NULL); /* else look up node */ if ((le = qtCache_find(qt)) == NULL) error(SYSTEM, "out of memory in qtRender_level"); if (QT_IS_TREE(qt) && (QT_IS_EMPTY(le->qt) || lvl > 0)) { /* compute children */ qtSubdivide_tri(v0,v1,v2,a,b,c); rc[0] = qtRender_level(QT_NTH_CHILD(qt,0),v0,c,b,sm,lvl-1); rc[1] = qtRender_level(QT_NTH_CHILD(qt,1),c,v1,a,sm,lvl-1); rc[2] = qtRender_level(QT_NTH_CHILD(qt,2),b,a,v2,sm,lvl-1); rc[3] = qtRender_level(QT_NTH_CHILD(qt,3),a,b,c,sm,lvl-1); } if (QT_IS_EMPTY(le->qt)) { /* let's make some data! */ int rgbs[3]; double distsum; register int i, n; /* average our triangle vertices */ rgbs[0] = rgbs[1] = rgbs[2] = 0; distsum = 0.; n = 0; if(QT_IS_TREE(qt)) { /* from subtree */ for (i = 4; i--; ) if (rc[i] != NULL) { rgbs[0] += rc[i]->rgb[0]; rgbs[1] += rc[i]->rgb[1]; rgbs[2] += rc[i]->rgb[2]; distsum += rc[i]->dist; n++; } } else { /* from triangle set */ OBJECT *os; int s0, s1, s2; os = qtqueryset(qt); for (i = os[0]; i; i--) { if(SM_IS_NTH_T_BASE(sm,os[i])) continue; tri = SM_NTH_TRI(sm,os[i]); if(!T_IS_VALID(tri)) continue; n++; s0 = T_NTH_V(tri,0); s1 = T_NTH_V(tri,1); s2 = T_NTH_V(tri,2); VCOPY(a,SM_NTH_WV(sm,s0)); VCOPY(b,SM_NTH_WV(sm,s1)); VCOPY(c,SM_NTH_WV(sm,s2)); distsum += SM_BG_SAMPLE(sm,s0) ? dev_zmax : sqrt(dist2(a,SM_VIEW_CENTER(sm))); distsum += SM_BG_SAMPLE(sm,s1) ? dev_zmax : sqrt(dist2(b,SM_VIEW_CENTER(sm))); distsum += SM_BG_SAMPLE(sm,s2) ? dev_zmax : sqrt(dist2(c,SM_VIEW_CENTER(sm))); rgbs[0] += SM_NTH_RGB(sm,s0)[0] + SM_NTH_RGB(sm,s1)[0] + SM_NTH_RGB(sm,s2)[0]; rgbs[1] += SM_NTH_RGB(sm,s0)[1] + SM_NTH_RGB(sm,s1)[1] + SM_NTH_RGB(sm,s2)[1]; rgbs[2] += SM_NTH_RGB(sm,s0)[2] + SM_NTH_RGB(sm,s1)[2] + SM_NTH_RGB(sm,s2)[2]; } n *= 3; } if (!n) return(NULL); le->qt = qt; le->av.rgb[0] = rgbs[0]/n; le->av.rgb[1] = rgbs[1]/n; le->av.rgb[2] = rgbs[2]/n; le->av.dist = distsum/(double)n; } if (lvl == 0 || (lvl > 0 && QT_IS_LEAF(qt))) { /* render this node */ /* compute pseudo vertices */ VCOPY(a,v0); VCOPY(b,v1); VCOPY(c,v2); normalize(a); normalize(b); normalize(c); VSUM(a,SM_VIEW_CENTER(sm),a,le->av.dist); VSUM(b,SM_VIEW_CENTER(sm),b,le->av.dist); VSUM(c,SM_VIEW_CENTER(sm),c,le->av.dist); /* draw triangle */ glColor3ub(le->av.rgb[0],le->av.rgb[1],le->av.rgb[2]); glVertex3d(a[0],a[1],a[2]); glVertex3d(b[0],b[1],b[2]); glVertex3d(c[0],c[1],c[2]); } return(&le->av); } smRender_stree_level(sm,lvl) SM *sm; int lvl; { QUADTREE qt; int i; FVECT t0,t1,t2; STREE *st; if (lvl < 0) return; st = SM_LOCATOR(sm); glPushAttrib(GL_LIGHTING_BIT); glShadeModel(GL_FLAT); glBegin(GL_TRIANGLES); for(i=0; i < ST_NUM_ROOT_NODES; i++) { qt = ST_ROOT_QT(st,i); qtRender_level(qt,ST_NTH_V(st,i,0),ST_NTH_V(st,i,1),ST_NTH_V(st,i,2), sm,lvl); } glEnd(); glPopAttrib(); } smRender_stree(sm, qual) /* render some quadtree triangles */ SM *sm; int qual; { int i, n,ntarget; int lvlcnt[QT_MAX_LEVELS]; STREE *st; int4 *active_flag; if (qual <= 0) return; /* compute rendering target */ ntarget = 0; active_flag = SM_NTH_FLAGS(sm,T_ACTIVE_FLAG); for(n=((SM_NUM_TRI(sm)+31)>>5) +1; --n;) if(active_flag[n]) for(i=0; i < 32; i++) if(active_flag[n] & (1L << i)) ntarget++; ntarget = ntarget*qual/MAXQUALITY; if (!ntarget) return; for (i = QT_MAX_LEVELS; i--; ) lvlcnt[i] = 0; st = SM_LOCATOR(sm); for(i=0; i < ST_NUM_ROOT_NODES;i++) stCount_level_leaves(lvlcnt, ST_ROOT_QT(st,i)); for (ntarget -= lvlcnt[i=0]; i < QT_MAX_LEVELS-1; ntarget -= lvlcnt[++i]) if (ntarget < lvlcnt[i+1]) break; /* compute and render target level */ smRender_stree_level(sm,i); } #define render_tri(v0,v1,v2,rgb0,rgb1,rgb2) \ {glColor3ub(rgb0[0],rgb0[1],rgb0[2]); glVertex3fv(v0); \ glColor3ub(rgb1[0],rgb1[1],rgb1[2]); glVertex3fv(v1); \ glColor3ub(rgb2[0],rgb2[1],rgb2[2]); glVertex3fv(v2);} \ render_mixed_tri(v0,v1,v2,rgb0,rgb1,rgb2,bg0,bg1,bg2,vp,vc) float v0[3],v1[3],v2[3]; BYTE rgb0[3],rgb1[3],rgb2[3]; int bg0,bg1,bg2; FVECT vp,vc; { double p[3],d; int j,ids[3],cnt; int rgb[3]; /* NOTE:Triangles are defined clockwise:historical relative to spherical tris: could change */ if(bg0 && bg1 && bg2) return; cnt = 0; d = 0.0; rgb[0] = rgb[1] = rgb[2] = 0; if(!bg0) { rgb[0] += rgb0[0]; rgb[1] += rgb0[1]; rgb[2] += rgb0[2]; cnt++; d += DIST(vp,v0); } if(!bg1) { rgb[0] += rgb1[0]; rgb[1] += rgb1[1]; rgb[2] += rgb1[2]; cnt++; d += DIST(vp,v1); } if(!bg2) { rgb[0] += rgb2[0]; rgb[1] += rgb2[1]; rgb[2] += rgb2[2]; cnt++; d += DIST(vp,v2); } if(cnt > 1) { rgb[0]/=cnt; rgb[1]/=cnt; rgb[2]/=cnt; d /= (double)cnt; } if(bg0) { glColor3ub(rgb[0],rgb[1],rgb[2]); VSUB(p,v0,vc); p[0] *= d; p[1] *= d; p[2] *= d; VADD(p,p,vc); glVertex3dv(p); } else { glColor3ub(rgb0[0],rgb0[1],rgb0[2]); glVertex3fv(v0); } if(bg1) { glColor3ub(rgb[0],rgb[1],rgb[2]); VSUB(p,v1,vc); p[0] *= d; p[1] *= d; p[2] *= d; VADD(p,p,vc); glVertex3dv(p); } else { glColor3ub(rgb1[0],rgb1[1],rgb1[2]); glVertex3fv(v1); } if(bg2) { glColor3ub(rgb[0],rgb[1],rgb[2]); VSUB(p,v2,vc); p[0] *= d; p[1] *= d; p[2] *= d; VADD(p,p,vc); glVertex3dv(p); } else { glColor3ub(rgb2[0],rgb2[1],rgb2[2]); glVertex3fv(v2); } } render_bg_tri(v0,v1,v2,rgb0,rgb1,rgb2,vp,vc,d) float v0[3],v1[3],v2[3]; BYTE rgb0[3],rgb1[3],rgb2[3]; FVECT vp,vc; double d; { double p[3]; glColor3ub(rgb0[0],rgb0[1],rgb0[2]); VSUB(p,v0,vc); if(dev_zmin >= 0.99) { p[0] *= d; p[1] *= d; p[2] *= d; } VADD(p,p,vp); glVertex3dv(p); glColor3ub(rgb1[0],rgb1[1],rgb1[2]); VSUB(p,v1,vc); if(dev_zmin >= 0.99) { p[0] *= d; p[1] *= d; p[2] *= d; } VADD(p,p,vp); glVertex3dv(p); glColor3ub(rgb2[0],rgb2[1],rgb2[2]); VSUB(p,v2,vc); if(dev_zmin >= 0.99) { p[0] *= d; p[1] *= d; p[2] *= d; } VADD(p,p,vp); glVertex3dv(p); } smRender_mesh(sm,vp) SM *sm; FVECT vp; { int i,n,bg0,bg1,bg2; double d; int v0_id,v1_id,v2_id; TRI *tri; float (*wp)[3]; BYTE (*rgb)[3]; int4 *active_flag,*bg_flag; wp = SM_WP(sm); rgb =SM_RGB(sm); d = (dev_zmin+dev_zmax)/2.0; glPushAttrib(GL_DEPTH_BUFFER_BIT); /* First draw background polygons */ glDisable(GL_DEPTH_TEST); glBegin(GL_TRIANGLES); active_flag = SM_NTH_FLAGS(sm,T_ACTIVE_FLAG); bg_flag = SM_NTH_FLAGS(sm,T_BG_FLAG); for(n=((SM_NUM_TRI(sm)+31)>>5) +1; --n;) if(active_flag[n] & bg_flag[n]) for(i=0; i < 32; i++) if(active_flag[n] & bg_flag[n] & (1L << i)) { tri = SM_NTH_TRI(sm,(n<<5)+i); v0_id = T_NTH_V(tri,0); v1_id = T_NTH_V(tri,1); v2_id = T_NTH_V(tri,2); render_bg_tri(wp[v0_id],wp[v1_id],wp[v2_id],rgb[v0_id],rgb[v1_id], rgb[v2_id],vp,SM_VIEW_CENTER(sm),d); } glEnd(); glEnable(GL_DEPTH_TEST); glBegin(GL_TRIANGLES); for(n=((SM_NUM_TRI(sm)+31)>>5) +1; --n;) if(active_flag[n]) for(i=0; i < 32; i++) if((active_flag[n] & (1L << i)) && !(bg_flag[n] & (1L << i))) { tri = SM_NTH_TRI(sm,(n<<5)+i); v0_id = T_NTH_V(tri,0); v1_id = T_NTH_V(tri,1); v2_id = T_NTH_V(tri,2); bg0 = SM_DIR_ID(sm,v0_id) || SM_BASE_ID(sm,v0_id); bg1 = SM_DIR_ID(sm,v1_id) || SM_BASE_ID(sm,v1_id); bg2 = SM_DIR_ID(sm,v2_id) || SM_BASE_ID(sm,v2_id); if(!(bg0 || bg1 || bg2)) render_tri(wp[v0_id],wp[v1_id],wp[v2_id],rgb[v0_id],rgb[v1_id], rgb[v2_id]) else render_mixed_tri(wp[v0_id],wp[v1_id],wp[v2_id],rgb[v0_id], rgb[v1_id],rgb[v2_id],bg0,bg1,bg2,vp,SM_VIEW_CENTER(sm)); } glEnd(); glPopAttrib(); } int compare_tri_depths(T_DEPTH *td1,T_DEPTH *td2) { double d; d = td2->depth-td1->depth; if(d > 0.0) return(1); if(d < 0.0) return(-1); return(0); } #ifdef DEBUG #define freebuf(b) tempbuf(-1) #endif char * tempbuf(len) /* get a temporary buffer */ unsigned len; { extern char *malloc(), *realloc(); static char *tempbuf = NULL; static unsigned tempbuflen = 0; #ifdef DEBUG static int in_use=FALSE; if(len == -1) { in_use = FALSE; return(NULL); } if(in_use) { eputs("Buffer in use:cannot allocate:tempbuf()\n"); return(NULL); } #endif if (len > tempbuflen) { if (tempbuflen > 0) tempbuf = realloc(tempbuf, len); else tempbuf = malloc(len); tempbuflen = tempbuf==NULL ? 0 : len; } #ifdef DEBUG in_use = TRUE; #endif return(tempbuf); } smOrder_new_tris(sm,vp,td) SM *sm; FVECT vp; T_DEPTH *td; { int n,i,j,tcnt,v; TRI *tri; double d,min_d; FVECT diff; int4 *new_flag,*bg_flag; tcnt=0; new_flag = SM_NTH_FLAGS(sm,T_NEW_FLAG); bg_flag = SM_NTH_FLAGS(sm,T_BG_FLAG); for(n=((SM_NUM_TRI(sm)+31)>>5) +1; --n;) if(new_flag[n] & ~bg_flag[n]) for(i=0; i < 32; i++) if(new_flag[n] & (1L << i) & ~bg_flag[n]) { tri = SM_NTH_TRI(sm,(n<<5)+i); td[tcnt].tri = (n << 5)+i; min_d = -1; for(j=0;j < 3;j++) { v = T_NTH_V(tri,j); if(!SM_BG_SAMPLE(sm,v)) { VSUB(diff,SM_NTH_WV(sm,v),vp); d = DOT(diff,diff); if(min_d == -1 || d < min_d) min_d = d; } } td[tcnt++].depth = min_d; } td[tcnt].tri = -1; if(tcnt) qsort((void *)td,tcnt,sizeof(T_DEPTH),compare_tri_depths); } smUpdate_Rendered_mesh(sm,vp,clr) SM *sm; FVECT vp; int clr; { int i,n,v0_id,v1_id,v2_id,bg0,bg1,bg2; GLint depth_test; double d; TRI *tri; float (*wp)[3]; BYTE (*rgb)[3]; int4 *new_flag,*bg_flag; T_DEPTH *td = NULL; /* For all of the NEW triangles (since last update): assume ACTIVE. Go through and sort on depth value (from vp). Turn Depth Buffer test off and render back-front */ if(!EQUAL_VEC3(SM_VIEW_CENTER(sm),vp)) { /* Must depth sort if view points do not coincide */ td = (T_DEPTH *)tempbuf(smNew_tri_cnt*sizeof(T_DEPTH)); #ifdef DEBUG if(!td) eputs("Cant create list:wont depth sort:smUpdate_rendered_mesh\n"); #endif smOrder_new_tris(sm,vp,td); } wp = SM_WP(sm); rgb =SM_RGB(sm); /* Turn Depth Test off -- using Painter's algorithm */ glPushAttrib(GL_DEPTH_BUFFER_BIT); glDepthFunc(GL_ALWAYS); d = (dev_zmin+dev_zmax)/2.0; /* Now render back-to front */ /* First render bg triangles */ new_flag = SM_NTH_FLAGS(sm,T_NEW_FLAG); bg_flag = SM_NTH_FLAGS(sm,T_BG_FLAG); glBegin(GL_TRIANGLES); for(n=((SM_NUM_TRI(sm)+31)>>5) +1; --n;) if(new_flag[n] & bg_flag[n]) for(i=0; i < 32; i++) if(new_flag[n] & (1L << i) & bg_flag[n] ) { tri = SM_NTH_TRI(sm,(n<<5)+i); v0_id = T_NTH_V(tri,0); v1_id = T_NTH_V(tri,1); v2_id = T_NTH_V(tri,2); render_bg_tri(wp[v0_id],wp[v1_id],wp[v2_id],rgb[v0_id],rgb[v1_id], rgb[v2_id],vp,SM_VIEW_CENTER(sm),d); } glEnd(); glBegin(GL_TRIANGLES); if(!td) { for(n=((SM_NUM_TRI(sm)+31)>>5) +1; --n;) if(new_flag[n] & ~bg_flag[n]) for(i=0; i < 32; i++) if(new_flag[n] & (1L << i) & ~bg_flag[n]) { tri = SM_NTH_TRI(sm,(n<<5)+i); /* Dont need to check for valid tri because flags are cleared on delete */ v0_id = T_NTH_V(tri,0); v1_id = T_NTH_V(tri,1); v2_id = T_NTH_V(tri,2); bg0 = SM_DIR_ID(sm,v0_id) || SM_BASE_ID(sm,v0_id); bg1 = SM_DIR_ID(sm,v1_id) || SM_BASE_ID(sm,v1_id); bg2 = SM_DIR_ID(sm,v2_id) || SM_BASE_ID(sm,v2_id); if(!(bg0 || bg1 || bg2)) render_tri(wp[v0_id],wp[v1_id],wp[v2_id],rgb[v0_id],rgb[v1_id], rgb[v2_id]) else render_mixed_tri(wp[v0_id],wp[v1_id],wp[v2_id],rgb[v0_id], rgb[v1_id],rgb[v2_id],bg0,bg1,bg2,vp, SM_VIEW_CENTER(sm)); } } else { for(i=0; td[i].tri != -1;i++) { tri = SM_NTH_TRI(sm,td[i].tri); /* Dont need to check for valid tri because flags are cleared on delete */ v0_id = T_NTH_V(tri,0); v1_id = T_NTH_V(tri,1); v2_id = T_NTH_V(tri,2); bg0 = SM_DIR_ID(sm,v0_id) || SM_BASE_ID(sm,v0_id); bg1 = SM_DIR_ID(sm,v1_id) || SM_BASE_ID(sm,v1_id); bg2 = SM_DIR_ID(sm,v2_id) || SM_BASE_ID(sm,v2_id); if(!(bg0 || bg1 || bg2)) render_tri(wp[v0_id],wp[v1_id],wp[v2_id],rgb[v0_id],rgb[v1_id], rgb[v2_id]) else render_mixed_tri(wp[v0_id],wp[v1_id],wp[v2_id],rgb[v0_id], rgb[v1_id],rgb[v2_id],bg0,bg1,bg2,vp, SM_VIEW_CENTER(sm)); } #ifdef DEBUG freebuf(td); #endif } glEnd(); /* Restore Depth Test */ glPopAttrib(); } /* * smUpdate(view, qua) : update OpenGL output geometry for view vp * VIEW *view; : desired view * int qual; : quality level (percentage on linear time scale) * * Draw new geometric representation using OpenGL calls. Assume that the * view has already been set up and the correct frame buffer has been * selected for drawing. The quality level is on a linear scale, where 100% * is full (final) quality. It is not necessary to redraw geometry that has * been output since the last call to smClean(). (The last view drawn will * be view==&odev.v each time.) */ smUpdate(view,qual) VIEW *view; int qual; { double d; int last_update,t; if(!smMesh) return; /* If view has moved beyond epsilon from canonical: must rebuild - epsilon is calculated as running avg of distance of sample points from canonical view: m = 1/(AVG(1/r)): some fraction of this */ d = DIST(view->vp,SM_VIEW_CENTER(smMesh)); if(qual >= MAXQUALITY && d > SM_ALLOWED_VIEW_CHANGE(smMesh)) { /* Re-build the mesh */ #ifdef TEST_DRIVER odev.v = *view; #endif mark_tris_in_frustum(view); smRebuild_mesh(smMesh,view); smClean_notify = TRUE; } /* This is our final update iff qual==MAXQUALITY and view==&odev.v */ last_update = qual>=MAXQUALITY && view==&(odev.v); /* Check if we should draw ALL triangles in current frustum */ if(smClean_notify || smNew_tri_cnt>SM_SAMPLE_TRIS(smMesh)*SM_INC_PERCENT) { #ifdef TEST_DRIVER glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); #else if (SM_TONE_MAP(smMesh) < SM_NUM_SAMP(smMesh)) { tmClearHisto(); tmAddHisto(SM_BRT(smMesh),SM_NUM_SAMP(smMesh),1); if(tmComputeMapping(0.,0.,0.) != TM_E_OK) return; tmMapPixels(SM_RGB(smMesh),SM_BRT(smMesh),SM_CHR(smMesh), SM_NUM_SAMP(smMesh)); } #endif mark_tris_in_frustum(view); if (qual <= (MAXQUALITY*3/4)) smRender_stree(smMesh,qual); else smRender_mesh(smMesh,view->vp); #ifdef TEST_DRIVER glFlush(); glutSwapBuffers(); #endif } /* Do an incremental update instead */ else { if(!smNew_tri_cnt) return; #ifdef TEST_DRIVER glDrawBuffer(GL_FRONT); #else t = SM_TONE_MAP(smMesh); if(t == 0) { tmClearHisto(); tmAddHisto(SM_BRT(smMesh),SM_NUM_SAMP(smMesh),1); if(tmComputeMapping(0.,0.,0.) != TM_E_OK) return; } tmMapPixels(SM_NTH_RGB(smMesh,t),&SM_NTH_BRT(smMesh,t), SM_NTH_CHR(smMesh,t), SM_NUM_SAMP(smMesh)-t); #endif smUpdate_Rendered_mesh(smMesh,view->vp,last_update); #ifdef TEST_DRIVER glDrawBuffer(GL_BACK); #endif } SM_TONE_MAP(smMesh) = SM_NUM_SAMP(smMesh); if (last_update) { smClean_notify = FALSE; smNew_tri_cnt = 0; smClear_flags(smMesh,T_NEW_FLAG); qtCache_init(0); } }