1 | #include <cmath> |
1 | #include <cmath> |
2 | |
2 | |
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3 | #include "opengl.h" |
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4 | |
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5 | #include "view.h" |
3 | #include "oct.h" |
6 | #include "oct.h" |
4 | #include "view.h" |
7 | |
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8 | vector<GLuint> occ_query_objects; |
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9 | |
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10 | static GLuint begin_occ_query () |
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11 | { |
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12 | GLuint id; |
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13 | |
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14 | if (occ_query_objects.size ()) |
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15 | { |
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16 | id = *(occ_query_objects.end () - 1); |
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17 | occ_query_objects.pop_back (); |
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18 | } |
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19 | else |
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20 | glGenQueriesARB (1, &id); |
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21 | |
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22 | glBeginQueryARB (GL_SAMPLES_PASSED, id); |
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23 | return id; |
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24 | } |
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25 | |
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26 | inline void end_occ_query () |
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27 | { |
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28 | glEndQueryARB (GL_SAMPLES_PASSED); |
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29 | } |
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30 | |
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31 | static GLuint occ_query_result (GLuint id) |
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32 | { |
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33 | GLuint count; |
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34 | |
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35 | glGetQueryObjectuivARB (id, GL_QUERY_RESULT, &count); |
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36 | occ_query_objects.push_back (id); |
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37 | |
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38 | return count; |
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39 | } |
5 | |
40 | |
6 | view::view () |
41 | view::view () |
7 | : gamma(1.0) |
42 | : gamma(1.0) |
8 | { |
43 | { |
9 | } |
44 | } |
10 | |
45 | |
11 | view::~view () |
46 | view::~view () |
12 | { |
47 | { |
13 | } |
48 | } |
14 | |
49 | |
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50 | void view::begin_occ_query (recv_occ_query &recv) |
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51 | { |
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52 | occ_queries.push_back (oq_data (&recv, ::begin_occ_query ())); |
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53 | } |
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54 | |
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55 | void view::end_occ_query () |
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56 | { |
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57 | ::end_occ_query (); |
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58 | } |
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59 | |
15 | bool view::may_draw (entity_base *e) |
60 | bool view::may_draw (const entity *e) |
16 | { |
61 | { |
17 | if (drawn.find (e) != drawn.end ()) |
62 | if (drawn.find (e) != drawn.end ()) |
18 | return false; |
63 | return false; |
19 | |
64 | |
20 | drawn.insert (e); |
65 | drawn.insert (e); |
… | |
… | |
29 | |
74 | |
30 | glMatrixMode (GL_PROJECTION); |
75 | glMatrixMode (GL_PROJECTION); |
31 | glLoadIdentity (); |
76 | glLoadIdentity (); |
32 | |
77 | |
33 | GLdouble aspect = (GLdouble)w/h; |
78 | GLdouble aspect = (GLdouble)w/h; |
34 | GLdouble zNear = 0.1; |
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35 | GLdouble zFar = 50.; |
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36 | |
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37 | GLdouble ymax = zNear * tan (fov * (M_PI / 360.0)); |
79 | GLdouble ymax = z_near * tan (fov * (M_PI / 360.0)); |
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80 | |
38 | glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, zNear, zFar); |
81 | glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, z_near, z_far); |
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82 | |
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83 | perspfact = z_near / ymax * 0.5 * (GLdouble)h; |
39 | |
84 | |
40 | d = normalize (d);//D |
85 | d = normalize (d);//D |
41 | u = normalize (u);//D |
86 | u = normalize (u);//D |
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87 | |
42 | vec3 rz = -d; |
88 | vec3 rz = -d; |
43 | vec3 rx = cross (u, rz); |
89 | vec3 rx = cross (u, rz); |
44 | vec3 ry = cross (rz, rx); |
90 | vec3 ry = cross (rz, rx); |
45 | |
91 | |
46 | matrix &m = projection; |
92 | matrix &m = projection; |
47 | 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; |
48 | 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; |
49 | 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; |
50 | 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; |
51 | |
97 | |
52 | glMultMatrixf ((GLfloat *)m.data); |
98 | diagfact = abs (rz.x) + abs (rz.y) + abs (rz.z); |
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99 | //printf ("diagfact = %f\n", diagfact); |
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100 | diagfact = sqrtf (3.);//D WHY??? |
53 | |
101 | |
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102 | glMultMatrixf (m); |
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103 | glTranslatef (-p.x, -p.y, -p.z); |
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104 | |
54 | glGetFloatv (GL_PROJECTION_MATRIX, (GLfloat *)&m); |
105 | glGetFloatv (GL_PROJECTION_MATRIX, m); |
55 | |
106 | |
56 | 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) ); |
57 | 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) ); |
58 | 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) ); |
59 | 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) ); |
60 | 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) ); |
61 | 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) ); |
62 | |
113 | |
63 | glMatrixMode (GL_MODELVIEW); |
114 | glMatrixMode (GL_MODELVIEW); |
64 | glLoadIdentity (); |
115 | glLoadIdentity (); |
65 | glTranslatef (-p.x, -p.y, -p.z); |
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66 | } |
116 | } |
67 | |
117 | |
68 | void view::begin () |
118 | void view::begin () |
69 | { |
119 | { |
70 | vismap.clear (); |
120 | glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
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121 | |
71 | vislist.clear (); |
122 | vislist.clear (); |
72 | |
123 | |
73 | generation++; |
124 | generation++; |
74 | |
125 | |
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126 | farlist.clear (); |
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127 | |
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128 | // check occlusion queries |
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129 | for (vector<oq_data>::iterator i = occ_queries.begin (); i != occ_queries.end (); ++i) |
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130 | { |
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131 | occ_query oq(*this, i->second, ::occ_query_result (i->second)); |
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132 | i->first->event (oq); |
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133 | } |
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134 | |
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135 | occ_queries.clear (); |
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136 | |
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137 | z_far = nz_far; |
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138 | c_far = nc_far; |
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139 | |
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140 | if (z_far < z_near) |
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141 | z_far = z_near * 2.; |
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142 | |
75 | reset_projection (); |
143 | reset_projection (); |
76 | |
144 | |
77 | // check occlusion queries here |
145 | nc_far = nz_far = z_near + 1.F; |
78 | for (vector<octant *>::iterator i = checklist.begin (); i != checklist.end (); ++i) |
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79 | //printf ("%p %d\n", *i, occ_query_result ((*i)->occ_query)); |
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80 | occ_query_result ((*i)->occ_query); |
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81 | |
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82 | checklist.clear (); |
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83 | |
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84 | world.detect_visibility (*this); |
146 | world.detect_visibility (*this); |
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147 | |
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148 | printf ("far %f cf %f CAM (%d,%d,%d)\n", z_far, c_far, orig.x, orig.y, orig.z);//D |
85 | } |
149 | } |
86 | |
150 | |
87 | void view::end () |
151 | void view::end () |
88 | { |
152 | { |
89 | vismap.clear (); |
153 | vislist.clear (); |
90 | } |
154 | } |
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155 | |
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156 | #define DEPTH_OFFSET (1. / (GLdouble)(1L << 16)) |
91 | |
157 | |
92 | void view::pass (enum mode m) |
158 | void view::pass (enum mode m) |
93 | { |
159 | { |
94 | mode = m; |
160 | mode = m; |
95 | |
161 | |
96 | glDisable (GL_ALPHA_TEST); |
162 | glDisable (GL_ALPHA_TEST); |
97 | glDisable (GL_BLEND); |
163 | glDisable (GL_BLEND); |
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164 | //glDisable (GL_DEPTH_TEST); |
98 | |
165 | |
99 | if (mode == view::DEPTH) |
166 | if (mode == view::DEPTH) |
100 | { |
167 | { |
101 | glEnable (GL_POLYGON_OFFSET_FILL); |
168 | //glEnable (GL_POLYGON_OFFSET_FILL); |
102 | glPolygonOffset (0, 1); |
169 | //glPolygonOffset (0, 5); |
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170 | glDepthRange (DEPTH_OFFSET, 1.); |
103 | glDepthFunc (GL_LESS); |
171 | glDepthFunc (GL_LESS); |
104 | glDisable (GL_LIGHTING); |
172 | glDisable (GL_LIGHTING); |
105 | glColorMask (0, 0, 0, 0); |
173 | glColorMask (0, 0, 0, 0); |
106 | //cgGLDisableProfile (vsh_profile); |
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107 | cgGLDisableProfile (fsh_profile); |
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108 | } |
174 | } |
109 | else |
175 | else |
110 | { |
176 | { |
111 | #if 0 |
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112 | glEnable (GL_MINMAX); |
177 | glEnable (GL_MINMAX); |
113 | #endif |
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114 | glDisable (GL_POLYGON_OFFSET_FILL); |
178 | //glDisable (GL_POLYGON_OFFSET_FILL); |
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179 | glDepthRange (0., 1. - DEPTH_OFFSET); |
115 | glDepthFunc (GL_LESS); |
180 | glDepthFunc (GL_LESS); |
116 | glDepthMask (0); |
181 | glDepthMask (0); |
117 | cgGLEnableProfile (vsh_profile); |
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118 | cgGLEnableProfile (fsh_profile); |
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119 | } |
182 | } |
120 | |
183 | |
121 | for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i) |
184 | for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i) |
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185 | { |
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186 | octant *o = *i; |
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187 | |
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188 | visibility_state &vs = vismap[o]; |
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189 | bool oq = mode == LIGHTED |
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190 | && vs.last + 1. < timer.now |
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191 | && (vs.visibility == visibility_state::PARTIAL |
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192 | || vs.visibility == visibility_state::FULL); |
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193 | |
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194 | if (oq) |
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195 | begin_occ_query (*o); |
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196 | |
122 | (*i)->display (*this); |
197 | o->display (*this); |
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198 | |
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199 | if (oq) // && o->fill) WHY??? |
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200 | { |
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201 | glColorMask (0, 0, 0, 0); |
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202 | o->draw_bbox (*this); |
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203 | glColorMask (1, 1, 1, 0); |
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204 | } |
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205 | |
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206 | if (oq) |
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207 | end_occ_query (); |
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208 | } |
123 | |
209 | |
124 | drawn.clear (); |
210 | drawn.clear (); |
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211 | |
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212 | if (mode == view::DEPTH) |
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213 | { |
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214 | glEnable (GL_DEPTH_CLAMP_NV); |
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215 | glDepthMask (0); |
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216 | glDepthFunc (GL_LESS); |
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217 | |
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218 | for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i) |
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219 | { |
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220 | begin_occ_query (**i); |
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221 | (*i)->draw_bbox (*this); |
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222 | end_occ_query (); |
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223 | } |
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224 | |
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225 | glDisable (GL_DEPTH_CLAMP_NV); |
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226 | } |
125 | |
227 | |
126 | glColorMask (1, 1, 1, 0); |
228 | glColorMask (1, 1, 1, 0); |
127 | glDepthMask (1); |
229 | glDepthMask (1); |
128 | } |
230 | } |
129 | |
231 | |