ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libgender/view.C
(Generate patch)

Comparing libgender/view.C (file contents):
Revision 1.32 by root, Wed Oct 6 17:55:40 2004 UTC vs.
Revision 1.45 by root, Sun Oct 10 14:15:16 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 (entity_base *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
24 drawn.insert (e); 65 drawn.insert (e);
… …
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 = 0.1;
40 GLdouble zFar = 50.;
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 ();
47 d = normalize (d);//D 83 d = normalize (d);//D
48 u = normalize (u);//D 84 u = normalize (u);//D
85
49 vec3 rz = -d; 86 vec3 rz = -d;
50 vec3 rx = cross (u, rz); 87 vec3 rx = cross (u, rz);
51 vec3 ry = cross (rz, rx); 88 vec3 ry = cross (rz, rx);
52 gl_error = glGetError ();
53 89
54 matrix &m = projection; 90 matrix &m = projection;
55 m(0,0) = rx.x; m(0,1) = rx.y; m(0,2) = rx.z; m(0,3) = 0; 91 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; 92 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; 93 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; 94 m(3,0) = 0; m(3,1) = 0; m(3,2) = 0; m(3,3) = 1;
59 gl_error = glGetError ();
60 95
61 glMultMatrixf ((GLfloat *)m.data); 96 diagfact = abs (rz.x) + abs (rz.y) + abs (rz.z);
97 diagfact = sqrtf (3.);//D WHY???
98 //printf ("diagfact = %f\n", diagfact);
62 99
63 gl_error = glGetError (); 100 glMultMatrixf (m);
101 glTranslatef (-p.x, -p.y, -p.z);
102
64 glGetFloatv (GL_PROJECTION_MATRIX, (GLfloat *)&m); 103 glGetFloatv (GL_PROJECTION_MATRIX, m);
65 104
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) ); 105 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) ); 106 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) ); 107 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) ); 108 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) ); 109 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) ); 110 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) );
73 111
74 gl_error = glGetError ();
75 glMatrixMode (GL_MODELVIEW); 112 glMatrixMode (GL_MODELVIEW);
76 glLoadIdentity (); 113 glLoadIdentity ();
77 glTranslatef (-p.x, -p.y, -p.z);
78 gl_error = glGetError ();
79} 114}
80 115
81void view::begin () 116void view::begin ()
82{ 117{
83 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 118 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
84 glDepthRange (0, 1. - (1. / pow (2., 16.))); 119 glDepthRange (0, 1. - (1. / pow (2., 16.)));
85 120
86 vismap.clear ();
87 vislist.clear (); 121 vislist.clear ();
88 122
89 generation++; 123 generation++;
90 124
125 farlist.clear ();
126
127 // check occlusion queries
128 for (vector<oq_data>::iterator i = occ_queries.begin (); i != occ_queries.end (); ++i)
129 {
130 occ_query oq(*this, i->second, occ_query_result (i->second));
131 i->first->event (oq);
132 }
133
134 occ_queries.clear ();
135
136 z_far = nz_far;
137 c_far = nc_far;
91 reset_projection (); 138 reset_projection ();
92 139
93 for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i) 140 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); 141 world.detect_visibility (*this);
142
143 printf ("far %f cf %f RCP %f,%f,%f +%f\n", z_far, c_far,
144 frustum.r.n.x,
145 frustum.r.n.y,
146 frustum.r.n.z,
147 frustum.r.d
148 );//D
107} 149}
108 150
109void view::end () 151void view::end ()
110{ 152{
111 vismap.clear (); 153 vislist.clear ();
112} 154}
113 155
114void view::pass (enum mode m) 156void view::pass (enum mode m)
115{ 157{
116 mode = m; 158 mode = m;
… …
123 glEnable (GL_POLYGON_OFFSET_FILL); 165 glEnable (GL_POLYGON_OFFSET_FILL);
124 glPolygonOffset (0, 1); 166 glPolygonOffset (0, 1);
125 glDepthFunc (GL_LESS); 167 glDepthFunc (GL_LESS);
126 glDisable (GL_LIGHTING); 168 glDisable (GL_LIGHTING);
127 glColorMask (0, 0, 0, 0); 169 glColorMask (0, 0, 0, 0);
128 cgGLEnableProfile (vsh_profile);// z-fighting?? 170 cgGLDisableProfile (vsh_profile);// z-fighting??
129 cgGLDisableProfile (fsh_profile); 171 cgGLDisableProfile (fsh_profile);
130 } 172 }
131 else 173 else
132 { 174 {
133 glEnable (GL_MINMAX); 175 glEnable (GL_MINMAX);
134 glDisable (GL_POLYGON_OFFSET_FILL); 176 glDisable (GL_POLYGON_OFFSET_FILL);
135 glDepthFunc (GL_LESS); 177 glDepthFunc (GL_LESS);
136 glDepthMask (0); 178 glDepthMask (1);
137 cgGLEnableProfile (vsh_profile); 179 cgGLEnableProfile (vsh_profile);
138 cgGLEnableProfile (fsh_profile); 180 cgGLEnableProfile (fsh_profile);
139 } 181 }
140 182
141 for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i) 183 for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i)
184 {
185 visibility_state &vs = vismap[*i];
186 bool oq = mode == LIGHTED
187 && vs.last + 1. < timer.now
188 && (vs.visibility == visibility_state::PARTIAL
189 || vs.visibility == visibility_state::FULL);
190
191 if (oq)
192 begin_occ_query (**i);
193
142 (*i)->display (*this); 194 (*i)->display (*this);
195
196 if (oq)
197 end_occ_query ();
198 }
143 199
144 drawn.clear (); 200 drawn.clear ();
145 201
146 if (mode == view::LIGHTED) 202 if (mode == view::DEPTH)
147 { 203 {
148 glEnable (GL_DEPTH_CLAMP_NV); 204 glEnable (GL_DEPTH_CLAMP_NV);
205 glDepthMask (0);
206 glColorMask (0, 0, 0, 0);
149 glDepthFunc (GL_LESS); 207 glDepthFunc (GL_LESS);
150 glEnable (GL_COLOR_MATERIAL); 208 if (mode == view::LIGHTED) glDepthFunc (GL_LEQUAL);
209 if (mode == view::LIGHTED) glColorMask (1, 1, 1, 0);
151 glDisable (GL_LIGHTING); 210 glDisable (GL_LIGHTING);
152#if 1
153 cgGLDisableProfile (vsh_profile); 211 cgGLDisableProfile (vsh_profile);
154 cgGLDisableProfile (fsh_profile); 212 cgGLDisableProfile (fsh_profile);
155#endif
156 glShadeModel (GL_FLAT);
157 213
214#if 0
158 static int count; count++; 215 static int count; count++;
159 if (farlist.size ()) 216 if (farlist.size ())
160 printf ("%d: size %d\n", count, farlist.size ()); 217 printf ("%d: size %d\n", count, farlist.size ());
218#endif
161 219
162 for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i) 220 for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i)
163 { 221 {
164 glColor3f (1 / (GLfloat)(i - farlist.begin()), 1, 1 / (GLfloat)(i - farlist.begin())); 222 if (mode == view::DEPTH) begin_occ_query (**i);
223 if (mode == view::LIGHTED) glColor3f ((((long)*i >> 6) & 15) / 31. + 0.5,0,0);
165 (*i)->draw_bbox (*this); 224 (*i)->draw_bbox (*this);
225 if (mode == view::DEPTH) end_occ_query ();
166 } 226 }
167 227
168 glEnable (GL_DEPTH_TEST);
169 glDisable (GL_DEPTH_CLAMP_NV); 228 glDisable (GL_DEPTH_CLAMP_NV);
170 glShadeModel (GL_SMOOTH); 229 glDepthMask (1);
171 } 230 }
172 231
173 glColorMask (1, 1, 1, 0); 232 glColorMask (1, 1, 1, 0);
174 glDepthMask (1); 233 glDepthMask (1);
175 234

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines