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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 1.42 by root, Sun Oct 10 00:00:52 2004 UTC

1#include <cmath> 1#include <cmath>
2 2
3#define GL_GLEXT_PROTOTYPES
3#include <GL/gl.h> 4#include <GL/gl.h>
4#include <GL/glext.h> 5#include <GL/glext.h>
5 6
7#include "view.h"
6#include "oct.h" 8#include "oct.h"
7#include "view.h"
8 9
9 static GLenum gl_error; 10vector<GLuint> occ_query_objects;
11
12static GLuint begin_occ_query ()
13{
14 GLuint id;
15
16 if (occ_query_objects.size ())
17 {
18 id = *(occ_query_objects.end () - 1);
19 occ_query_objects.pop_back ();
20 }
21 else
22 glGenQueriesARB (1, &id);
23
24 glBeginQueryARB (GL_SAMPLES_PASSED, id);
25 return id;
26}
27
28inline void end_occ_query ()
29{
30 glEndQueryARB (GL_SAMPLES_PASSED);
31}
32
33static GLuint occ_query_result (GLuint id)
34{
35 GLuint count;
36
37 glGetQueryObjectuivARB (id, GL_QUERY_RESULT, &count);
38 occ_query_objects.push_back (id);
39
40 return count;
41}
42
10view::view () 43view::view ()
11: gamma(1.0) 44: gamma(1.0)
12{ 45{
13} 46}
14 47
15view::~view () 48view::~view ()
16{ 49{
17} 50}
18 51
52void view::begin_occ_query (recv_occ_query &recv)
53{
54 occ_queries.push_back (oq_data (&recv, ::begin_occ_query ()));
55}
56
57void view::end_occ_query ()
58{
59 ::end_occ_query ();
60}
61
19bool view::may_draw (const entity *e) 62bool view::may_draw (const entity *e)
20{ 63{
21 if (drawn.find (e) != drawn.end ()) 64 if (drawn.find (e) != drawn.end ())
22 return false; 65 return false;
23 66
… …
32 glViewport (0, 0, w, h); 75 glViewport (0, 0, w, h);
33 76
34 glMatrixMode (GL_PROJECTION); 77 glMatrixMode (GL_PROJECTION);
35 glLoadIdentity (); 78 glLoadIdentity ();
36 79
37 gl_error = glGetError ();
38 GLdouble aspect = (GLdouble)w/h; 80 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)); 81 GLdouble ymax = z_near * tan (fov * (M_PI / 360.0));
82
44 glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, zNear, zFar); 83 glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, z_near, z_far);
45 84
46 gl_error = glGetError ();
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 diagfact = sqrtf (3.);//D WHY???
100 //printf ("diagfact = %f\n", diagfact);
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
91 reset_projection (); 127 reset_projection ();
92 128
93 for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i)
94 ;
95 farlist.clear (); 129 farlist.clear ();
96 130
97 // check occlusion queries here 131 // check occlusion queries
98#if 0
99 for (vector<octant *>::iterator i = checklist.begin (); i != checklist.end (); ++i) 132 for (vector<oq_data>::iterator i = occ_queries.begin (); i != occ_queries.end (); ++i)
100 //printf ("%p %d\n", *i, occ_query_result ((*i)->occ_query)); 133 {
101 occ_query_result ((*i)->occ_query); 134 occ_query oq(*this, i->second, occ_query_result (i->second));
135 i->first->event (oq);
136 }
102 137
103 checklist.clear (); 138 occ_queries.clear ();
104#endif
105 139
140 nc_far = nz_far = z_near + 1.F;
106 world.detect_visibility (*this); 141 world.detect_visibility (*this);
142 z_far = nz_far;
143 c_far = nc_far;
144 z_far = c_far;//D
145
146 printf ("far %f cf %f RCP %f,%f,%f +%f\n", z_far, c_far,
147 frustum.r.n.x,
148 frustum.r.n.y,
149 frustum.r.n.z,
150 frustum.r.d
151 );//D
107} 152}
108 153
109void view::end () 154void view::end ()
110{ 155{
111 vismap.clear (); 156 vislist.clear ();
112} 157}
113 158
114void view::pass (enum mode m) 159void view::pass (enum mode m)
115{ 160{
116 mode = m; 161 mode = m;
… …
123 glEnable (GL_POLYGON_OFFSET_FILL); 168 glEnable (GL_POLYGON_OFFSET_FILL);
124 glPolygonOffset (0, 1); 169 glPolygonOffset (0, 1);
125 glDepthFunc (GL_LESS); 170 glDepthFunc (GL_LESS);
126 glDisable (GL_LIGHTING); 171 glDisable (GL_LIGHTING);
127 glColorMask (0, 0, 0, 0); 172 glColorMask (0, 0, 0, 0);
128 cgGLEnableProfile (vsh_profile);// z-fighting?? 173 cgGLDisableProfile (vsh_profile);// z-fighting??
129 cgGLDisableProfile (fsh_profile); 174 cgGLDisableProfile (fsh_profile);
130 } 175 }
131 else 176 else
132 { 177 {
133 glEnable (GL_MINMAX); 178 glEnable (GL_MINMAX);
134 glDisable (GL_POLYGON_OFFSET_FILL); 179 glDisable (GL_POLYGON_OFFSET_FILL);
135 glDepthFunc (GL_LESS); 180 glDepthFunc (GL_LESS);
136 glDepthMask (0); 181 glDepthMask (1);
137 cgGLEnableProfile (vsh_profile); 182 cgGLEnableProfile (vsh_profile);
138 cgGLEnableProfile (fsh_profile); 183 cgGLEnableProfile (fsh_profile);
139 } 184 }
140 185
141 for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i) 186 for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i)
187 {
188 visibility_state &vs = vismap[*i];
189 bool oq = (vs.visibility == visibility_state::PARTIAL
190 || vs.visibility == visibility_state::FULL)
191 && (vs.last + 1. < timer.now)
192 && (mode == LIGHTED);
193
194 if (oq)
195 begin_occ_query (**i);
196
142 (*i)->display (*this); 197 (*i)->display (*this);
198
199 if (oq)
200 end_occ_query ();
201
202 }
143 203
144 drawn.clear (); 204 drawn.clear ();
145 205
146 if (mode == view::DEPTH || 1) 206 if (mode == view::DEPTH)
147 { 207 {
148 glEnable (GL_DEPTH_CLAMP_NV); 208 glEnable (GL_DEPTH_CLAMP_NV);
209 glDepthMask (0);
149 glDepthFunc (GL_LESS); 210 glDepthFunc (GL_LESS);
150 glEnable (GL_COLOR_MATERIAL); 211 if (mode == view::LIGHTED) glDepthFunc (GL_LEQUAL);
151 glDisable (GL_LIGHTING); 212 glDisable (GL_LIGHTING);
152#if 1
153 cgGLDisableProfile (vsh_profile); 213 cgGLDisableProfile (vsh_profile);
154 cgGLDisableProfile (fsh_profile); 214 cgGLDisableProfile (fsh_profile);
155#endif
156 glShadeModel (GL_FLAT);
157 215
158#if 0 216#if 0
159 static int count; count++; 217 static int count; count++;
160 if (farlist.size ()) 218 if (farlist.size ())
161 printf ("%d: size %d\n", count, farlist.size ()); 219 printf ("%d: size %d\n", count, farlist.size ());
162#endif 220#endif
163 221
164 for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i) 222 for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i)
165 { 223 {
166 glColor3f (1,0,0); 224 if (mode == view::DEPTH) begin_occ_query (**i);
225 if (mode == view::LIGHTED) glColor3f ((((long)*i >> 6) & 15) / 31. + 0.5,0,0);
167 (*i)->draw_bbox (*this); 226 (*i)->draw_bbox (*this);
227 if (mode == view::DEPTH) end_occ_query ();
168 } 228 }
169 229
170 glEnable (GL_DEPTH_TEST);
171 glDisable (GL_DEPTH_CLAMP_NV); 230 glDisable (GL_DEPTH_CLAMP_NV);
172 glShadeModel (GL_SMOOTH); 231 glDepthMask (1);
173 } 232 }
174 233
175 glColorMask (1, 1, 1, 0); 234 glColorMask (1, 1, 1, 0);
176 glDepthMask (1); 235 glDepthMask (1);
177 236

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