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root/radiance/ray/src/hd/sm_ogl.c
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Comparing ray/src/hd/sm_ogl.c (file contents):
Revision 3.7 by gwlarson, Wed Sep 16 18:16:29 1998 UTC vs.
Revision 3.8 by gwlarson, Tue Oct 6 18:16:54 1998 UTC

# Line 16 | Line 16 | static char SCCSid[] = "$SunId$ SGI";
16   #include <GL/glu.h>
17   #include <glut.h>
18   #endif
19 + #include "sm_flag.h"
20   #include "sm_list.h"
21   #include "sm_geom.h"
22 + #include "sm_qtree.h"
23 + #include "sm_stree.h"
24   #include "sm.h"
25  
26   #ifdef TEST_DRIVER
# Line 44 | Line 47 | static QT_LUENT        *qt_htbl = NULL;        /* quadtree cache */
47   static int      qt_hsiz = 0;            /* quadtree cache size */
48  
49  
50 < int
51 < mark_active_tris(qtptr,fptr,arg1,arg2)
50 >
51 > mark_active_tris(qtptr,fptr)
52   QUADTREE *qtptr;
53 < int *fptr,arg1,*arg2;
53 > int *fptr;
54   {
55    QUADTREE qt = *qtptr;
56    OBJECT *os,*optr;
57    register int i,t_id;
58 +  TRI *tri;
59  
60 <  if (!QT_IS_LEAF(qt))
57 <    return(TRUE);
58 <  
60 >
61    if(!QT_FLAG_FILL_TRI(*fptr))
62       (*fptr)++;
61 –  /* For each triangle in the set, set the which flag*/
62 –  os = qtqueryset(qt);
63  
64 <  for (i = QT_SET_CNT(os), optr = QT_SET_PTR(os); i > 0; i--)
65 <  {
66 <    t_id = QT_SET_NEXT_ELEM(optr);
67 <    /* Set the render flag */
68 <    if(SM_IS_NTH_T_BASE(smMesh,t_id))
69 <        continue;
70 <    SM_SET_NTH_T_ACTIVE(smMesh,t_id);
71 <    /* NOTE:Also set the LRU clock bit: MAY WANT TO CHANGE: */      
72 <    SM_SET_NTH_T_LRU(smMesh,t_id);
73 <  }
74 <  return(TRUE);
75 < }
76 <
77 < int
78 < mark_active_interior(qtptr,q0,q1,q2,t0,t1,t2,n,arg1,arg2,arg3)
79 < QUADTREE *qtptr;
80 < FVECT q0,q1,q2;
81 < FVECT t0,t1,t2;
82 < int n;
83 < int *arg1,arg2,*arg3;
84 < {
85 <  QUADTREE qt = *qtptr;
86 <  OBJECT *os,*optr;
87 <  register int i,t_id;
88 <
89 <  if (!QT_IS_LEAF(qt))
90 <    return(TRUE);
64 >  if(QT_IS_EMPTY(qt) || QT_LEAF_IS_FLAG(qt))
65 >    return;
66    /* For each triangle in the set, set the which flag*/
67    os = qtqueryset(qt);
68  
# Line 95 | Line 70 | int *arg1,arg2,*arg3;
70    {
71      t_id = QT_SET_NEXT_ELEM(optr);
72      /* Set the render flag */
73 <    if(SM_IS_NTH_T_BASE(smMesh,t_id))
73 >    tri = SM_NTH_TRI(smMesh,t_id);
74 >    if(!T_IS_VALID(tri) || SM_IS_NTH_T_BASE(smMesh,t_id))
75          continue;
76      SM_SET_NTH_T_ACTIVE(smMesh,t_id);
77 <    /* NOTE:Also set the LRU clock bit: MAY WANT TO CHANGE: */      
78 <    SM_SET_NTH_T_LRU(smMesh,t_id);
77 >    /* Set the Active bits of the Vertices */
78 >    S_SET_FLAG(T_NTH_V(tri,0));
79 >    S_SET_FLAG(T_NTH_V(tri,1));
80 >    S_SET_FLAG(T_NTH_V(tri,2));
81 >
82    }
104 –  return(TRUE);
83   }
84  
85 + #define mark_active_interior mark_active_tris
86 +
87   mark_tris_in_frustum(view)
88   VIEW *view;
89   {
90      FVECT nr[4],far[4];
91 <
91 >    FPEQ peq;
92 >    int debug=0;
93      /* Mark triangles in approx. view frustum as being active:set
94         LRU counter: for use in discarding samples when out
95         of space
# Line 119 | Line 100 | VIEW *view;
100      /* First clear all the quadtree node and triangle active flags */
101      qtClearAllFlags();
102      smClear_flags(smMesh,T_ACTIVE_FLAG);
103 +    /* Clear all of the active sample flags*/
104 +    sClear_all_flags(smMesh->samples);
105  
106 +
107      /* calculate the world space coordinates of the view frustum */
108      calculate_view_frustum(view->vp,view->hvec,view->vvec,view->horiz,
109                             view->vert, dev_zmin,dev_zmax,nr,far);
110  
127 –    /* Project the view frustum onto the spherical quadtree */
128 –    /* For every cell intersected by the projection of the faces
129 –       of the frustum: mark all triangles in the cell as ACTIVE-
130 –       Also set the triangles LRU clock counter
131 –       */
132 –    /* Near face triangles */
133 –    smLocator_apply_func(smMesh,nr[0],nr[2],nr[3],mark_active_tris,
134 –                         mark_active_interior,NULL,NULL);
135 –    smLocator_apply_func(smMesh,nr[2],nr[0],nr[1],mark_active_tris,
136 –                         mark_active_interior,NULL,NULL);
137 –    /* Right face triangles */
138 –    smLocator_apply_func(smMesh,nr[0],far[3],far[0],mark_active_tris,
139 –                         mark_active_interior,NULL,NULL);
140 –    smLocator_apply_func(smMesh,far[3],nr[0],nr[3],mark_active_tris,
141 –                         mark_active_interior,NULL,NULL);
142 –    /* Left face triangles */
143 –    smLocator_apply_func(smMesh,nr[1],far[2],nr[2],mark_active_tris,
144 –                         mark_active_interior,NULL,NULL);
145 –    smLocator_apply_func(smMesh,far[2],nr[1],far[1],mark_active_tris,
146 –                         mark_active_interior,NULL,NULL);
147 –    /* Top face triangles */
148 –    smLocator_apply_func(smMesh,nr[0],far[0],nr[1],mark_active_tris,
149 –                         mark_active_interior,NULL,NULL);
150 –    smLocator_apply_func(smMesh,nr[1],far[0],far[1],mark_active_tris,
151 –                         mark_active_interior,NULL,NULL);
152 –    /* Bottom face triangles */
153 –    smLocator_apply_func(smMesh,nr[3],nr[2],far[3],mark_active_tris,
154 –                         mark_active_interior,NULL,NULL);
155 –    smLocator_apply_func(smMesh,nr[2],far[2],far[3],mark_active_tris,
156 –                         mark_active_interior,NULL,NULL);
157 –    /* Far face triangles */
158 –    smLocator_apply_func(smMesh,far[0],far[2],far[1],mark_active_tris,
159 –                         mark_active_interior,NULL,NULL);
160 –    
161 –    smLocator_apply_func(smMesh,far[2],far[0],far[3],mark_active_tris,
162 –                         mark_active_interior,NULL,NULL);
111   #ifdef TEST_DRIVER
112      VCOPY(FrustumFar[0],far[0]);
113      VCOPY(FrustumFar[1],far[1]);
# Line 170 | Line 118 | VIEW *view;
118      VCOPY(FrustumNear[2],nr[2]);
119      VCOPY(FrustumNear[3],nr[3]);
120   #endif
121 +    /* Project the view frustum onto the spherical quadtree */
122 +    /* For every cell intersected by the projection of the faces
123 +
124 +       of the frustum: mark all triangles in the cell as ACTIVE-
125 +       Also set the triangles LRU clock counter
126 +       */
127 +    
128 +    if(EQUAL_VEC3(view->vp,SM_VIEW_CENTER(smMesh)))
129 +    {/* Near face triangles */
130 +      smLocator_apply_func(smMesh,nr[3],nr[2],nr[0],mark_active_tris,
131 +                         mark_active_interior,NULL);
132 +      smLocator_apply_func(smMesh,nr[1],nr[0],nr[2],mark_active_tris,
133 +                         mark_active_interior,NULL);
134 +      return;
135 +    }
136 +
137 +    /* Test the view against the planes: and swap orientation if inside:*/
138 +    tri_plane_equation(nr[0],nr[2],nr[3], &peq,FALSE);
139 +    if(PT_ON_PLANE(SM_VIEW_CENTER(smMesh),peq) > 0.0)
140 +    {/* Near face triangles */
141 +      smLocator_apply_func(smMesh,nr[3],nr[2],nr[0],mark_active_tris,
142 +                           mark_active_interior,NULL);
143 +      smLocator_apply_func(smMesh,nr[1],nr[0],nr[2],mark_active_tris,
144 +                         mark_active_interior,NULL);
145 +    }
146 +    else
147 +    {/* Near face triangles */
148 +      smLocator_apply_func(smMesh,nr[0],nr[2],nr[3],mark_active_tris,
149 +                           mark_active_interior,NULL);
150 +      smLocator_apply_func(smMesh,nr[2],nr[0],nr[1],mark_active_tris,
151 +                         mark_active_interior,NULL);
152 +    }
153 +    tri_plane_equation(nr[0],far[3],far[0], &peq,FALSE);
154 +    if(PT_ON_PLANE(SM_VIEW_CENTER(smMesh),peq) > 0.0)
155 +    { /* Right face triangles */
156 +      smLocator_apply_func(smMesh,far[0],far[3],nr[0],mark_active_tris,
157 +                           mark_active_interior,NULL);
158 +      smLocator_apply_func(smMesh,nr[3],nr[0],far[3],mark_active_tris,
159 +                           mark_active_interior,NULL);
160 +    }
161 +    else
162 +    {/* Right face triangles */
163 +      smLocator_apply_func(smMesh,nr[0],far[3],far[0],mark_active_tris,
164 +                           mark_active_interior,NULL);
165 +      smLocator_apply_func(smMesh,far[3],nr[0],nr[3],mark_active_tris,
166 +                           mark_active_interior,NULL);
167 +    }
168 +
169 +    tri_plane_equation(nr[1],far[2],nr[2], &peq,FALSE);
170 +    if(PT_ON_PLANE(SM_VIEW_CENTER(smMesh),peq) > 0.0)
171 +    { /* Left face triangles */
172 +      smLocator_apply_func(smMesh,nr[2],far[2],nr[1],mark_active_tris,
173 +                           mark_active_interior,NULL);
174 +      smLocator_apply_func(smMesh,far[1],nr[1],far[2],mark_active_tris,
175 +                           mark_active_interior,NULL);  
176 +    }
177 +    else
178 +    { /* Left face triangles */
179 +      smLocator_apply_func(smMesh,nr[1],far[2],nr[2],mark_active_tris,
180 +                           mark_active_interior,NULL);
181 +      smLocator_apply_func(smMesh,far[2],nr[1],far[1],mark_active_tris,
182 +                   mark_active_interior,NULL);
183 +
184 +    }
185 +    tri_plane_equation(nr[0],far[0],nr[1], &peq,FALSE);
186 +    if(PT_ON_PLANE(SM_VIEW_CENTER(smMesh),peq) > 0.0)
187 +    {/* Top face triangles */
188 +      smLocator_apply_func(smMesh,nr[1],far[0],nr[0],mark_active_tris,
189 +                           mark_active_interior,NULL);
190 +      smLocator_apply_func(smMesh,far[1],far[0],nr[1],mark_active_tris,
191 +                           mark_active_interior,NULL);
192 +    }
193 +    else
194 +    {/* Top face triangles */
195 +      smLocator_apply_func(smMesh,nr[0],far[0],nr[1],mark_active_tris,
196 +                           mark_active_interior,NULL);
197 +      smLocator_apply_func(smMesh,nr[1],far[0],far[1],mark_active_tris,
198 +                           mark_active_interior,NULL);
199 +    }
200 +    tri_plane_equation(nr[3],nr[2],far[3], &peq,FALSE);
201 +    if(PT_ON_PLANE(SM_VIEW_CENTER(smMesh),peq) > 0.0)
202 +    {/* Bottom face triangles */
203 +      smLocator_apply_func(smMesh,far[3],nr[2],nr[3],mark_active_tris,
204 +                           mark_active_interior,NULL);
205 +      smLocator_apply_func(smMesh,far[3],far[2],nr[2],mark_active_tris,
206 +                           mark_active_interior,NULL);
207 +    }
208 +    else
209 +    { /* Bottom face triangles */
210 +      smLocator_apply_func(smMesh,nr[3],nr[2],far[3],mark_active_tris,
211 +                           mark_active_interior,NULL);
212 +      smLocator_apply_func(smMesh,nr[2],far[2],far[3],mark_active_tris,
213 +                           mark_active_interior,NULL);
214 +    }
215 +     tri_plane_equation(far[2],far[0],far[1], &peq,FALSE);
216 +    if(PT_ON_PLANE(SM_VIEW_CENTER(smMesh),peq) > 0.0)
217 +    {/* Far face triangles */
218 +      smLocator_apply_func(smMesh,far[0],far[2],far[1],mark_active_tris,
219 +                           mark_active_interior,NULL);
220 +      smLocator_apply_func(smMesh,far[2],far[0],far[3],mark_active_tris,
221 +                           mark_active_interior,NULL);
222 +    }
223 +    else
224 +    {/* Far face triangles */
225 +      smLocator_apply_func(smMesh,far[1],far[2],far[0],mark_active_tris,
226 +                           mark_active_interior,NULL);
227 +      smLocator_apply_func(smMesh,far[3],far[0],far[2],mark_active_tris,
228 +                           mark_active_interior,NULL);
229 +    }
230 +
231   }
232  
233   /*
# Line 321 | Line 379 | int lvl;
379        for (n = os[0]; n; n--)
380        {
381          tri = SM_NTH_TRI(sm,os[n]);
382 +        if(!T_IS_VALID(tri))
383 +          continue;
384 +
385          s0 = T_NTH_V(tri,0);
386          s1 = T_NTH_V(tri,1);
387          s2 = T_NTH_V(tri,2);
# Line 374 | Line 435 | int lvl;
435    QUADTREE root;
436    int i;
437    FVECT t0,t1,t2;
438 +  STREE *st;
439  
440 +  
441    if (lvl < 1)
442      return;
443 +  st = SM_LOCATOR(sm);
444    glPushAttrib(GL_LIGHTING_BIT);
445    glShadeModel(GL_FLAT);
446    glBegin(GL_TRIANGLES);
447 <  for(i=0; i < 4; i++)
447 >  for(i=0; i < ST_NUM_ROOT_NODES; i++)
448    {
449 <    root = ST_NTH_ROOT(SM_LOCATOR(sm),i);
450 <    stNth_base_verts(SM_LOCATOR(sm),i,t0,t1,t2);
451 <    qtRender_level(root,t0,t1,t2,sm,lvl-1);
449 >    root = ST_NTH_ROOT(st,i);
450 >    qtRender_level(root,ST_NTH_V(st,i,0),ST_NTH_V(st,i,1),ST_NTH_V(st,i,2),
451 >                   sm,lvl-1);
452    }
453    glEnd();
454    glPopAttrib();
# Line 409 | Line 473 | int qual;
473      return;
474    for (i = QT_MAX_LEVELS; i--; )
475      lvlcnt[i] = 0;
476 <  stCount_level_leaves(lvlcnt, SM_LOCATOR(sm)->root);
476 >  stCount_level_leaves(lvlcnt, ST_TOP_ROOT(SM_LOCATOR(sm)));
477 >  stCount_level_leaves(lvlcnt, ST_BOTTOM_ROOT(SM_LOCATOR(sm)));  
478    for (ntarget -= lvlcnt[i=0]; i < QT_MAX_LEVELS-1; ntarget -= lvlcnt[++i])
479      if (ntarget < lvlcnt[i+1])
480        break;
# Line 429 | Line 494 | int clr;
494    int j;
495  
496    tri = SM_NTH_TRI(sm,i);
497 <  if (clr) SM_CLEAR_NTH_T_NEW(sm,i);
497 >  if (clr) SM_CLR_NTH_T_NEW(sm,i);
498  
499    /* NOTE:Triangles are defined clockwise:historical relative to spherical
500       tris: could change
# Line 460 | Line 525 | int clr;
525    int rgb[3];
526  
527    tri = SM_NTH_TRI(sm,i);
528 <  if (clr) SM_CLEAR_NTH_T_NEW(sm,i);
528 >  if (clr) SM_CLR_NTH_T_NEW(sm,i);
529  
530    /* NOTE:Triangles are defined clockwise:historical relative to spherical
531       tris: could change
# Line 518 | Line 583 | int clr;
583    TRI *tri;
584    
585    tri = SM_NTH_TRI(sm,i);
586 <  if (clr) SM_CLEAR_NTH_T_NEW(sm,i);
586 >  if (clr) SM_CLR_NTH_T_NEW(sm,i);
587  
588    /* NOTE:Triangles are defined clockwise:historical relative to spherical
589       tris: could change
# Line 554 | Line 619 | int clr;
619    glPushAttrib(GL_DEPTH_BUFFER_BIT);
620    
621    /* First draw background polygons */
557 –
622    glDisable(GL_DEPTH_TEST);
623    glBegin(GL_TRIANGLES);
624    SM_FOR_ALL_ACTIVE_BG_TRIS(sm,i)
625       smRender_bg_tri(sm,i,vp,d,clr);
626    glEnd();
563 –  
627    glEnable(GL_DEPTH_TEST);
628    glBegin(GL_TRIANGLES);
629    SM_FOR_ALL_ACTIVE_FG_TRIS(sm,i)
630    {
631 +      if(SM_BG_TRI(sm,i))
632 +         continue;
633        if(!SM_MIXED_TRI(sm,i))
634          smRender_tri(sm,i,vp,clr);
635 <     else
635 >   else
636          smRender_mixed_tri(sm,i,vp,clr);
637    }
638    glEnd();
# Line 740 | Line 805 | smUpdate(view,qual)
805       epsilon is calculated as running avg of distance of sample points
806       from canonical view: m = 1/(AVG(1/r)): some fraction of this
807     */
808 +
809 +  if(!smMesh)
810 +    return;
811    d = DIST(view->vp,SM_VIEW_CENTER(smMesh));
812    if(qual >= 100 && d > SM_ALLOWED_VIEW_CHANGE(smMesh))
813    {
814        /* Re-build the mesh */
815   #ifdef TEST_DRIVER
816      odev.v = *view;
817 < #endif    
818 <      smRebuild_mesh(smMesh,view->vp);
817 > #endif  
818 >      mark_tris_in_frustum(view);
819 >      smRebuild_mesh(smMesh,view);
820    }
821    /* This is our final update iff qual==100 and view==&odev.v */
822    last_update = qual>=100 && view==&(odev.v);
823    /* Check if we should draw ALL triangles in current frustum */
824 <  if(smClean_notify || smNew_tri_cnt > SM_NUM_TRIS(smMesh)*SM_INC_PERCENT)
824 >  if(smClean_notify || smNew_tri_cnt > SM_SAMPLE_TRIS(smMesh)*SM_INC_PERCENT)
825    {
826   #ifdef TEST_DRIVER
827      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
828   #else
829 <    if (SM_TONE_MAP(smMesh) < SM_NUM_SAMP(smMesh))
829 >    if ( SM_TONE_MAP(smMesh) < SM_NUM_SAMP(smMesh))
830      {
831         tmClearHisto();
832         tmAddHisto(SM_BRT(smMesh),SM_NUM_SAMP(smMesh),1);
# Line 779 | Line 848 | smUpdate(view,qual)
848    }
849    /* Do an incremental update instead */
850    else
851 <  {  
852 <    if(!smNew_tri_cnt)
851 >  {
852 >      if(!smNew_tri_cnt)
853        return;
854   #ifdef TEST_DRIVER
855      glDrawBuffer(GL_FRONT);

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