--- ray/src/hd/sm_ogl.c 1998/09/11 11:52:26 3.5 +++ ray/src/hd/sm_ogl.c 1998/11/11 12:05:39 3.9 @@ -16,8 +16,11 @@ static char SCCSid[] = "$SunId$ SGI"; #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 @@ -44,17 +47,21 @@ static QT_LUENT *qt_htbl = NULL; /* quadtree cache */ static int qt_hsiz = 0; /* quadtree cache size */ -int -mark_active_tris(qtptr,arg) + +mark_active_tris(qtptr,fptr) QUADTREE *qtptr; -int *arg; +int *fptr; { QUADTREE qt = *qtptr; OBJECT *os,*optr; register int i,t_id; + TRI *tri; - if (!QT_IS_LEAF(qt)) - return(TRUE); + if(!QT_FLAG_FILL_TRI(*fptr)) + (*fptr)++; + if(QT_IS_EMPTY(qt) || QT_LEAF_IS_FLAG(qt)) + return; + /* For each triangle in the set, set the which flag*/ os = qtqueryset(qt); @@ -62,20 +69,26 @@ int *arg; { t_id = QT_SET_NEXT_ELEM(optr); /* Set the render flag */ - if(SM_IS_NTH_T_BASE(smMesh,t_id)) + tri = SM_NTH_TRI(smMesh,t_id); + if(!T_IS_VALID(tri) || SM_IS_NTH_T_BASE(smMesh,t_id)) continue; SM_SET_NTH_T_ACTIVE(smMesh,t_id); - /* FOR NOW:Also set the LRU clock bit: MAY WANT TO CHANGE: */ - SM_SET_NTH_T_LRU(smMesh,t_id); + /* Set the Active bits of the Vertices */ + S_SET_FLAG(T_NTH_V(tri,0)); + S_SET_FLAG(T_NTH_V(tri,1)); + S_SET_FLAG(T_NTH_V(tri,2)); + } - return(TRUE); } +#define mark_active_interior mark_active_tris + mark_tris_in_frustum(view) VIEW *view; { FVECT nr[4],far[4]; - + FPEQ peq; + int debug=0; /* Mark triangles in approx. view frustum as being active:set LRU counter: for use in discarding samples when out of space @@ -86,35 +99,14 @@ VIEW *view; /* First clear all the quadtree node and triangle active flags */ qtClearAllFlags(); smClear_flags(smMesh,T_ACTIVE_FLAG); + /* Clear all of the active sample flags*/ + sClear_all_flags(SM_SAMP(smMesh)); + /* calculate the world space coordinates of the view frustum */ calculate_view_frustum(view->vp,view->hvec,view->vvec,view->horiz, view->vert, dev_zmin,dev_zmax,nr,far); - /* Project the view frustum onto the spherical quadtree */ - /* For every cell intersected by the projection of the faces - of the frustum: mark all triangles in the cell as ACTIVE- - Also set the triangles LRU clock counter - */ - /* Near face triangles */ - smLocator_apply_func(smMesh,nr[0],nr[2],nr[3],mark_active_tris,NULL); - smLocator_apply_func(smMesh,nr[2],nr[0],nr[1],mark_active_tris,NULL); - /* Right face triangles */ - smLocator_apply_func(smMesh,nr[0],far[3],far[0],mark_active_tris,NULL); - smLocator_apply_func(smMesh,far[3],nr[0],nr[3],mark_active_tris,NULL); - /* Left face triangles */ - smLocator_apply_func(smMesh,nr[1],far[2],nr[2],mark_active_tris,NULL); - smLocator_apply_func(smMesh,far[2],nr[1],far[1],mark_active_tris,NULL); - /* Top face triangles */ - smLocator_apply_func(smMesh,nr[0],far[0],nr[1],mark_active_tris,NULL); - smLocator_apply_func(smMesh,nr[1],far[0],far[1],mark_active_tris,NULL); - /* Bottom face triangles */ - smLocator_apply_func(smMesh,nr[3],nr[2],far[3],mark_active_tris,NULL); - smLocator_apply_func(smMesh,nr[2],far[2],far[3],mark_active_tris,NULL); - /* Far face triangles */ - smLocator_apply_func(smMesh,far[0],far[2],far[1],mark_active_tris,NULL); - smLocator_apply_func(smMesh,far[2],far[0],far[3],mark_active_tris,NULL); - #ifdef TEST_DRIVER VCOPY(FrustumFar[0],far[0]); VCOPY(FrustumFar[1],far[1]); @@ -125,6 +117,117 @@ VIEW *view; VCOPY(FrustumNear[2],nr[2]); VCOPY(FrustumNear[3],nr[3]); #endif + /* Project the view frustum onto the spherical quadtree */ + /* For every cell intersected by the projection of the faces + + of the frustum: mark all triangles in the cell as ACTIVE- + Also set the triangles LRU clock counter + */ + + if(EQUAL_VEC3(view->vp,SM_VIEW_CENTER(smMesh))) + {/* Near face triangles */ + + smLocator_apply_func(smMesh,nr[0],nr[2],nr[3],mark_active_tris, + mark_active_interior,NULL); + smLocator_apply_func(smMesh,nr[2],nr[0],nr[1],mark_active_tris, + mark_active_interior,NULL); + return; + } + + /* Test the view against the planes: and swap orientation if inside:*/ + tri_plane_equation(nr[0],nr[2],nr[3], &peq,FALSE); + if(PT_ON_PLANE(SM_VIEW_CENTER(smMesh),peq) < 0.0) + {/* Near face triangles */ + smLocator_apply_func(smMesh,nr[3],nr[2],nr[0],mark_active_tris, + mark_active_interior,NULL); + smLocator_apply_func(smMesh,nr[1],nr[0],nr[2],mark_active_tris, + mark_active_interior,NULL); + } + else + {/* Near face triangles */ + smLocator_apply_func(smMesh,nr[0],nr[2],nr[3],mark_active_tris, + mark_active_interior,NULL); + smLocator_apply_func(smMesh,nr[2],nr[0],nr[1],mark_active_tris, + mark_active_interior,NULL); + } + tri_plane_equation(nr[0],far[3],far[0], &peq,FALSE); + if(PT_ON_PLANE(SM_VIEW_CENTER(smMesh),peq) < 0.0) + { /* Right face triangles */ + smLocator_apply_func(smMesh,far[0],far[3],nr[0],mark_active_tris, + mark_active_interior,NULL); + smLocator_apply_func(smMesh,nr[3],nr[0],far[3],mark_active_tris, + mark_active_interior,NULL); + } + else + {/* Right face triangles */ + smLocator_apply_func(smMesh,nr[0],far[3],far[0],mark_active_tris, + mark_active_interior,NULL); + smLocator_apply_func(smMesh,far[3],nr[0],nr[3],mark_active_tris, + mark_active_interior,NULL); + } + + tri_plane_equation(nr[1],far[2],nr[2], &peq,FALSE); + if(PT_ON_PLANE(SM_VIEW_CENTER(smMesh),peq) < 0.0) + { /* Left face triangles */ + smLocator_apply_func(smMesh,nr[2],far[2],nr[1],mark_active_tris, + mark_active_interior,NULL); + smLocator_apply_func(smMesh,far[1],nr[1],far[2],mark_active_tris, + mark_active_interior,NULL); + } + else + { /* Left face triangles */ + smLocator_apply_func(smMesh,nr[1],far[2],nr[2],mark_active_tris, + mark_active_interior,NULL); + smLocator_apply_func(smMesh,far[2],nr[1],far[1],mark_active_tris, + mark_active_interior,NULL); + + } + tri_plane_equation(nr[0],far[0],nr[1], &peq,FALSE); + if(PT_ON_PLANE(SM_VIEW_CENTER(smMesh),peq) < 0.0) + {/* Top face triangles */ + smLocator_apply_func(smMesh,nr[1],far[0],nr[0],mark_active_tris, + mark_active_interior,NULL); + smLocator_apply_func(smMesh,far[1],far[0],nr[1],mark_active_tris, + mark_active_interior,NULL); + } + else + {/* Top face triangles */ + smLocator_apply_func(smMesh,nr[0],far[0],nr[1],mark_active_tris, + mark_active_interior,NULL); + smLocator_apply_func(smMesh,nr[1],far[0],far[1],mark_active_tris, + mark_active_interior,NULL); + } + tri_plane_equation(nr[3],nr[2],far[3], &peq,FALSE); + if(PT_ON_PLANE(SM_VIEW_CENTER(smMesh),peq) < 0.0) + {/* Bottom face triangles */ + smLocator_apply_func(smMesh,far[3],nr[2],nr[3],mark_active_tris, + mark_active_interior,NULL); + smLocator_apply_func(smMesh,far[3],far[2],nr[2],mark_active_tris, + mark_active_interior,NULL); + } + else + { /* Bottom face triangles */ + smLocator_apply_func(smMesh,nr[3],nr[2],far[3],mark_active_tris, + mark_active_interior,NULL); + smLocator_apply_func(smMesh,nr[2],far[2],far[3],mark_active_tris, + mark_active_interior,NULL); + } + tri_plane_equation(far[2],far[0],far[1], &peq,FALSE); + if(PT_ON_PLANE(SM_VIEW_CENTER(smMesh),peq) < 0.0) + {/* Far face triangles */ + smLocator_apply_func(smMesh,far[0],far[2],far[1],mark_active_tris, + mark_active_interior,NULL); + smLocator_apply_func(smMesh,far[2],far[0],far[3],mark_active_tris, + mark_active_interior,NULL); + } + else + {/* Far face triangles */ + smLocator_apply_func(smMesh,far[1],far[2],far[0],mark_active_tris, + mark_active_interior,NULL); + smLocator_apply_func(smMesh,far[3],far[0],far[2],mark_active_tris, + mark_active_interior,NULL); + } + } /* @@ -233,6 +336,7 @@ 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); @@ -274,7 +378,18 @@ int lvl; os = qtqueryset(qt); for (n = os[0]; n; n--) { - qtTri_from_id(os[n],a,b,c,NULL,NULL,NULL,&s0,&s1,&s2); + if(SM_IS_NTH_T_BASE(sm,os[n])) + continue; + tri = SM_NTH_TRI(sm,os[n]); + if(!T_IS_VALID(tri)) + continue; + + 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 @@ -306,10 +421,10 @@ int lvl; 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]); - /* NOTE: Triangle vertex order may change */ - glVertex3d(c[0],c[1],c[2]); - glVertex3d(b[0],b[1],b[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); } @@ -322,17 +437,20 @@ int lvl; QUADTREE root; int i; FVECT t0,t1,t2; + STREE *st; + if (lvl < 1) return; + st = SM_LOCATOR(sm); glPushAttrib(GL_LIGHTING_BIT); glShadeModel(GL_FLAT); glBegin(GL_TRIANGLES); - for(i=0; i < 4; i++) + for(i=0; i < ST_NUM_ROOT_NODES; i++) { - root = ST_NTH_ROOT(SM_LOCATOR(sm),i); - stNth_base_verts(SM_LOCATOR(sm),i,t0,t1,t2); - qtRender_level(root,t0,t1,t2,sm,lvl-1); + root = ST_NTH_ROOT(st,i); + qtRender_level(root,ST_NTH_V(st,i,0),ST_NTH_V(st,i,1),ST_NTH_V(st,i,2), + sm,lvl-1); } glEnd(); glPopAttrib(); @@ -357,7 +475,8 @@ int qual; return; for (i = QT_MAX_LEVELS; i--; ) lvlcnt[i] = 0; - stCount_level_leaves(lvlcnt, SM_LOCATOR(sm)->root); + stCount_level_leaves(lvlcnt, ST_TOP_ROOT(SM_LOCATOR(sm))); + stCount_level_leaves(lvlcnt, ST_BOTTOM_ROOT(SM_LOCATOR(sm))); for (ntarget -= lvlcnt[i=0]; i < QT_MAX_LEVELS-1; ntarget -= lvlcnt[++i]) if (ntarget < lvlcnt[i+1]) break; @@ -377,12 +496,8 @@ int clr; int j; tri = SM_NTH_TRI(sm,i); - if (clr) SM_CLEAR_NTH_T_NEW(sm,i); - - /* NOTE:Triangles are defined clockwise:historical relative to spherical - tris: could change - */ - for(j=2; j>= 0; j--) + if (clr) SM_CLR_NTH_T_NEW(sm,i); + for(j=0; j <= 2; j++) { #ifdef DEBUG if(SM_BG_SAMPLE(sm,T_NTH_V(tri,j))) @@ -408,7 +523,7 @@ int clr; int rgb[3]; tri = SM_NTH_TRI(sm,i); - if (clr) SM_CLEAR_NTH_T_NEW(sm,i); + if (clr) SM_CLR_NTH_T_NEW(sm,i); /* NOTE:Triangles are defined clockwise:historical relative to spherical tris: could change @@ -433,7 +548,7 @@ int clr; rgb[0]/=cnt; rgb[1]/=cnt; rgb[2]/=cnt; d /= (double)cnt; } - for(j=2; j>= 0; j--) + for(j=0; j <= 2; j++) { if(SM_BG_SAMPLE(sm,ids[j])) { @@ -466,12 +581,12 @@ int clr; TRI *tri; tri = SM_NTH_TRI(sm,i); - if (clr) SM_CLEAR_NTH_T_NEW(sm,i); + if (clr) SM_CLR_NTH_T_NEW(sm,i); /* NOTE:Triangles are defined clockwise:historical relative to spherical tris: could change */ - for(j=2; j>= 0; j--) + for(j=0; j <= 2; j++) { id = T_NTH_V(tri,j); glColor3ub(SM_NTH_RGB(sm,id)[0],SM_NTH_RGB(sm,id)[1], @@ -502,20 +617,18 @@ int clr; glPushAttrib(GL_DEPTH_BUFFER_BIT); /* First draw background polygons */ - glDisable(GL_DEPTH_TEST); glBegin(GL_TRIANGLES); SM_FOR_ALL_ACTIVE_BG_TRIS(sm,i) smRender_bg_tri(sm,i,vp,d,clr); glEnd(); - glEnable(GL_DEPTH_TEST); glBegin(GL_TRIANGLES); SM_FOR_ALL_ACTIVE_FG_TRIS(sm,i) { if(!SM_MIXED_TRI(sm,i)) smRender_tri(sm,i,vp,clr); - else + else smRender_mixed_tri(sm,i,vp,clr); } glEnd(); @@ -534,10 +647,7 @@ int i; tri = SM_NTH_TRI(sm,i); - /* Triangles are defined clockwise:historical relative to spherical - tris: could change - */ - for(j=2; j >=0; j--) + for(j=0; j <= 2; j++) { VCOPY(ptr,SM_NTH_WV(sm,T_NTH_V(tri,j))); glVertex3d(ptr[0],ptr[1],ptr[2]); @@ -581,6 +691,13 @@ T_DEPTH *td; continue; } tri = SM_NTH_TRI(sm,t_id); +#ifdef DEBUG + if(i >= smNew_tri_cnt) + { + eputs("smDepth_sort_tris():More tris than reported by smNew_tri_cnt\n"); + break; + } +#endif td[i].tri = t_id; min_d = -1; for(j=0;j < 3;j++) @@ -634,7 +751,7 @@ int clr; /* Turn Depth Test off -- using Painter's algorithm */ glPushAttrib(GL_DEPTH_BUFFER_BIT); - glDisable(GL_DEPTH_TEST); + glDepthFunc(GL_ALWAYS); d = (dev_zmin+dev_zmax)/2.0; /* Now render back-to front */ /* First render bg triangles */ @@ -643,7 +760,7 @@ int clr; smRender_bg_tri(sm,pop_list(&bglist),vp,d,clr); glEnd(); - glEnable(GL_DEPTH_TEST); + glBegin(GL_TRIANGLES); i=0; while(td[i].tri != -1) @@ -681,24 +798,28 @@ smUpdate(view,qual) epsilon is calculated as running avg of distance of sample points from canonical view: m = 1/(AVG(1/r)): some fraction of this */ + + if(!smMesh) + return; d = DIST(view->vp,SM_VIEW_CENTER(smMesh)); if(qual >= 100 && d > SM_ALLOWED_VIEW_CHANGE(smMesh)) { /* Re-build the mesh */ #ifdef TEST_DRIVER odev.v = *view; -#endif - smRebuild_mesh(smMesh,view->vp); +#endif + mark_tris_in_frustum(view); + smRebuild_mesh(smMesh,view); } /* This is our final update iff qual==100 and view==&odev.v */ last_update = qual>=100 && view==&(odev.v); /* Check if we should draw ALL triangles in current frustum */ - if(smClean_notify || smNew_tri_cnt > SM_NUM_TRIS(smMesh)*SM_INC_PERCENT) + 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)) + if ( SM_TONE_MAP(smMesh) < SM_NUM_SAMP(smMesh)) { tmClearHisto(); tmAddHisto(SM_BRT(smMesh),SM_NUM_SAMP(smMesh),1); @@ -720,8 +841,8 @@ smUpdate(view,qual) } /* Do an incremental update instead */ else - { - if(!smNew_tri_cnt) + { + if(!smNew_tri_cnt) return; #ifdef TEST_DRIVER glDrawBuffer(GL_FRONT); @@ -744,11 +865,14 @@ smUpdate(view,qual) 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); }