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Comparing libgender/view.C (file contents):
Revision 1.35 by root, Fri Oct 8 17:40:26 2004 UTC vs.
Revision 1.48 by root, Mon Oct 11 00:05:48 2004 UTC

1#include <cmath> 1#include <cmath>
2 2
3#include <GL/gl.h> 3#include "opengl.h"
4#include <GL/glext.h>
5 4
5#include "view.h"
6#include "oct.h" 6#include "oct.h"
7#include "view.h"
8 7
9 static GLenum gl_error; 8vector<GLuint> occ_query_objects;
9
10static GLuint begin_occ_query ()
11{
12 GLuint id;
13
14 if (occ_query_objects.size ())
15 {
16 id = *(occ_query_objects.end () - 1);
17 occ_query_objects.pop_back ();
18 }
19 else
20 glGenQueriesARB (1, &id);
21
22 glBeginQueryARB (GL_SAMPLES_PASSED, id);
23 return id;
24}
25
26inline void end_occ_query ()
27{
28 glEndQueryARB (GL_SAMPLES_PASSED);
29}
30
31static GLuint occ_query_result (GLuint id)
32{
33 GLuint count;
34
35 glGetQueryObjectuivARB (id, GL_QUERY_RESULT, &count);
36 occ_query_objects.push_back (id);
37
38 return count;
39}
40
10view::view () 41view::view ()
11: gamma(1.0) 42: gamma(1.0)
12{ 43{
13} 44}
14 45
15view::~view () 46view::~view ()
16{ 47{
17} 48}
18 49
50void view::begin_occ_query (recv_occ_query &recv)
51{
52 occ_queries.push_back (oq_data (&recv, ::begin_occ_query ()));
53}
54
55void view::end_occ_query ()
56{
57 ::end_occ_query ();
58}
59
19bool view::may_draw (const entity *e) 60bool view::may_draw (const entity *e)
20{ 61{
21 if (drawn.find (e) != drawn.end ()) 62 if (drawn.find (e) != drawn.end ())
22 return false; 63 return false;
23 64
… …
32 glViewport (0, 0, w, h); 73 glViewport (0, 0, w, h);
33 74
34 glMatrixMode (GL_PROJECTION); 75 glMatrixMode (GL_PROJECTION);
35 glLoadIdentity (); 76 glLoadIdentity ();
36 77
37 gl_error = glGetError ();
38 GLdouble aspect = (GLdouble)w/h; 78 GLdouble aspect = (GLdouble)w/h;
39 GLdouble zNear = 1.;
40 GLdouble zFar = 500.;
41
42 gl_error = glGetError ();
43 GLdouble ymax = zNear * tan (fov * (M_PI / 360.0)); 79 GLdouble ymax = z_near * tan (fov * (M_PI / 360.0));
80
44 glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, zNear, zFar); 81 glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, z_near, z_far);
45 82
46 gl_error = glGetError (); 83 perspfact = z_near / ymax * 0.5 * (GLdouble)h;
84
47 d = normalize (d);//D 85 d = normalize (d);//D
48 u = normalize (u);//D 86 u = normalize (u);//D
87
49 vec3 rz = -d; 88 vec3 rz = -d;
50 vec3 rx = cross (u, rz); 89 vec3 rx = cross (u, rz);
51 vec3 ry = cross (rz, rx); 90 vec3 ry = cross (rz, rx);
52 gl_error = glGetError ();
53 91
54 matrix &m = projection; 92 matrix &m = projection;
55 m(0,0) = rx.x; m(0,1) = rx.y; m(0,2) = rx.z; m(0,3) = 0; 93 m(0,0) = rx.x; m(0,1) = rx.y; m(0,2) = rx.z; m(0,3) = 0;
56 m(1,0) = ry.x; m(1,1) = ry.y; m(1,2) = ry.z; m(1,3) = 0; 94 m(1,0) = ry.x; m(1,1) = ry.y; m(1,2) = ry.z; m(1,3) = 0;
57 m(2,0) = rz.x; m(2,1) = rz.y; m(2,2) = rz.z; m(2,3) = 0; 95 m(2,0) = rz.x; m(2,1) = rz.y; m(2,2) = rz.z; m(2,3) = 0;
58 m(3,0) = 0; m(3,1) = 0; m(3,2) = 0; m(3,3) = 1; 96 m(3,0) = 0; m(3,1) = 0; m(3,2) = 0; m(3,3) = 1;
59 gl_error = glGetError ();
60 97
61 glMultMatrixf ((GLfloat *)m.data); 98 diagfact = abs (rz.x) + abs (rz.y) + abs (rz.z);
99 //printf ("diagfact = %f\n", diagfact);
100 diagfact = sqrtf (3.);//D WHY???
62 101
63 gl_error = glGetError (); 102 glMultMatrixf (m);
103 glTranslatef (-p.x, -p.y, -p.z);
104
64 glGetFloatv (GL_PROJECTION_MATRIX, (GLfloat *)&m); 105 glGetFloatv (GL_PROJECTION_MATRIX, m);
65 106
66 gl_error = glGetError ();
67 frustum.l = plane ( m(3,0) + m(0,0), m(3,1) + m(0,1), m(3,2) + m(0,2), m(3,3) + m(0,3) ); 107 frustum.l = plane ( m(3,0) + m(0,0), m(3,1) + m(0,1), m(3,2) + m(0,2), m(3,3) + m(0,3) );
68 frustum.r = plane ( m(3,0) - m(0,0), m(3,1) - m(0,1), m(3,2) - m(0,2), m(3,3) - m(0,3) ); 108 frustum.r = plane ( m(3,0) - m(0,0), m(3,1) - m(0,1), m(3,2) - m(0,2), m(3,3) - m(0,3) );
69 frustum.b = plane ( m(3,0) + m(1,0), m(3,1) + m(1,1), m(3,2) + m(1,2), m(3,3) + m(1,3) ); 109 frustum.b = plane ( m(3,0) + m(1,0), m(3,1) + m(1,1), m(3,2) + m(1,2), m(3,3) + m(1,3) );
70 frustum.t = plane ( m(3,0) - m(1,0), m(3,1) - m(1,1), m(3,2) - m(1,2), m(3,3) - m(1,3) ); 110 frustum.t = plane ( m(3,0) - m(1,0), m(3,1) - m(1,1), m(3,2) - m(1,2), m(3,3) - m(1,3) );
71 frustum.n = plane ( m(3,0) + m(2,0), m(3,1) + m(2,1), m(3,2) + m(2,2), m(3,3) + m(2,3) ); 111 frustum.n = plane ( m(3,0) + m(2,0), m(3,1) + m(2,1), m(3,2) + m(2,2), m(3,3) + m(2,3) );
72 frustum.f = plane ( m(3,0) - m(2,0), m(3,1) - m(2,1), m(3,2) - m(2,2), m(3,3) - m(2,3) ); 112 frustum.f = plane ( m(3,0) - m(2,0), m(3,1) - m(2,1), m(3,2) - m(2,2), m(3,3) - m(2,3) );
73 113
74 gl_error = glGetError ();
75 glMatrixMode (GL_MODELVIEW); 114 glMatrixMode (GL_MODELVIEW);
76 glLoadIdentity (); 115 glLoadIdentity ();
77 glTranslatef (-p.x, -p.y, -p.z);
78 gl_error = glGetError ();
79} 116}
80 117
81void view::begin () 118void view::begin ()
82{ 119{
83 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 120 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
84 glDepthRange (0, 1. - (1. / pow (2., 16.))); 121 glDepthRange (0, 1. - (1. / pow (2., 16.)));
85 122
86 vismap.clear ();
87 vislist.clear (); 123 vislist.clear ();
88 124
89 generation++; 125 generation++;
90 126
127 farlist.clear ();
128
129 // check occlusion queries
130 for (vector<oq_data>::iterator i = occ_queries.begin (); i != occ_queries.end (); ++i)
131 {
132 occ_query oq(*this, i->second, ::occ_query_result (i->second));
133 i->first->event (oq);
134 }
135
136 occ_queries.clear ();
137
138 z_far = nz_far;
139 c_far = nc_far;
140
141 if (z_far < z_near)
142 z_far = z_near * 2.;
143
91 reset_projection (); 144 reset_projection ();
92 145
93 for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i) 146 nc_far = nz_far = z_near + 1.F;
94 ;
95 farlist.clear ();
96
97 // check occlusion queries here
98#if 0
99 for (vector<octant *>::iterator i = checklist.begin (); i != checklist.end (); ++i)
100 //printf ("%p %d\n", *i, occ_query_result ((*i)->occ_query));
101 occ_query_result ((*i)->occ_query);
102
103 checklist.clear ();
104#endif
105
106 world.detect_visibility (*this); 147 world.detect_visibility (*this);
148
149 printf ("far %f cf %f CAM (%d,%d,%d)\n", z_far, c_far, orig.x, orig.y, orig.z);//D
107} 150}
108 151
109void view::end () 152void view::end ()
110{ 153{
111 vismap.clear (); 154 vislist.clear ();
112} 155}
113 156
114void view::pass (enum mode m) 157void view::pass (enum mode m)
115{ 158{
116 mode = m; 159 mode = m;
… …
123 glEnable (GL_POLYGON_OFFSET_FILL); 166 glEnable (GL_POLYGON_OFFSET_FILL);
124 glPolygonOffset (0, 1); 167 glPolygonOffset (0, 1);
125 glDepthFunc (GL_LESS); 168 glDepthFunc (GL_LESS);
126 glDisable (GL_LIGHTING); 169 glDisable (GL_LIGHTING);
127 glColorMask (0, 0, 0, 0); 170 glColorMask (0, 0, 0, 0);
128 cgGLEnableProfile (vsh_profile);// z-fighting?? 171 //cgGLDisableProfile (vsh_profile);// z-fighting??
129 cgGLDisableProfile (fsh_profile); 172 //cgGLDisableProfile (fsh_profile);
130 } 173 }
131 else 174 else
132 { 175 {
133 glEnable (GL_MINMAX); 176 glEnable (GL_MINMAX);
134 glDisable (GL_POLYGON_OFFSET_FILL); 177 glDisable (GL_POLYGON_OFFSET_FILL);
135 glDepthFunc (GL_LESS); 178 glDepthFunc (GL_LESS);
136 glDepthMask (0); 179 glDepthMask (0);
137 cgGLEnableProfile (vsh_profile); 180 //cgGLEnableProfile (vsh_profile);
138 cgGLEnableProfile (fsh_profile); 181 //cgGLEnableProfile (fsh_profile);
139 } 182 }
140 183
141 for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i) 184 for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i)
185 {
186 octant *o = *i;
187
188 visibility_state &vs = vismap[o];
189 bool oq = mode == LIGHTED
190 && vs.last + 1. < timer.now
191 && (vs.visibility == visibility_state::PARTIAL
192 || vs.visibility == visibility_state::FULL);
193
194 if (oq)
195 begin_occ_query (*o);
196
142 (*i)->display (*this); 197 o->display (*this);
198
199 if (oq) // && o->fill) WHY???
200 {
201 glColorMask (0, 0, 0, 0);
202 o->draw_bbox (*this);
203 glColorMask (1, 1, 1, 0);
204 }
205
206 if (oq)
207 end_occ_query ();
208 }
143 209
144 drawn.clear (); 210 drawn.clear ();
145 211
146 if (mode == view::DEPTH || 1) 212 if (mode == view::DEPTH)
147 { 213 {
148 glEnable (GL_DEPTH_CLAMP_NV); 214 glEnable (GL_DEPTH_CLAMP_NV);
215 glDepthMask (0);
149 glDepthFunc (GL_LESS); 216 glDepthFunc (GL_LESS);
150 glEnable (GL_COLOR_MATERIAL);
151 glDisable (GL_LIGHTING);
152#if 1
153 cgGLDisableProfile (vsh_profile);
154 cgGLDisableProfile (fsh_profile);
155#endif
156 glShadeModel (GL_FLAT);
157 217
158#if 0
159 static int count; count++;
160 if (farlist.size ())
161 printf ("%d: size %d\n", count, farlist.size ());
162#endif
163
164 for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i) 218 for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i)
165 { 219 {
166 glColor3f (1,0,0); 220 begin_occ_query (**i);
167 (*i)->draw_bbox (*this); 221 (*i)->draw_bbox (*this);
222 end_occ_query ();
168 } 223 }
169 224
170 glEnable (GL_DEPTH_TEST);
171 glDisable (GL_DEPTH_CLAMP_NV); 225 glDisable (GL_DEPTH_CLAMP_NV);
172 glShadeModel (GL_SMOOTH);
173 } 226 }
174 227
175 glColorMask (1, 1, 1, 0); 228 glColorMask (1, 1, 1, 0);
176 glDepthMask (1); 229 glDepthMask (1);
177 230

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