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Comparing libgender/view.C (file contents):
Revision 1.52 by root, Sat Oct 16 14:48:48 2004 UTC vs.
Revision 1.71 by root, Thu Nov 4 04:46:58 2004 UTC

… …
3#include "opengl.h" 3#include "opengl.h"
4 4
5#include "view.h" 5#include "view.h"
6#include "oct.h" 6#include "oct.h"
7 7
8using namespace gl;
9
10pass pass_depth (0);
11
8vector<GLuint> occ_query_objects; 12vector<GLuint> occ_query_objects;
9 13
10static GLuint begin_occ_query () 14static GLuint begin_occ_query ()
11{ 15{
12 GLuint id; 16 GLuint id;
… …
15 { 19 {
16 id = *(occ_query_objects.end () - 1); 20 id = *(occ_query_objects.end () - 1);
17 occ_query_objects.pop_back (); 21 occ_query_objects.pop_back ();
18 } 22 }
19 else 23 else
20 glGenQueriesARB (1, &id); 24 glGenQueries (1, &id);
21 25
22 glBeginQueryARB (GL_SAMPLES_PASSED, id); 26 glBeginQuery (GL_SAMPLES_PASSED, id);
23 return id; 27 return id;
24} 28}
25 29
26inline void end_occ_query () 30inline void end_occ_query ()
27{ 31{
28 glEndQueryARB (GL_SAMPLES_PASSED); 32 glEndQuery (GL_SAMPLES_PASSED);
29} 33}
30 34
31static GLuint occ_query_result (GLuint id) 35static GLuint occ_query_result (GLuint id)
32{ 36{
33 GLuint count; 37 GLuint count;
34 38
35 glGetQueryObjectuivARB (id, GL_QUERY_RESULT, &count); 39 glGetQueryObjectuiv (id, GL_QUERY_RESULT, &count);
36 occ_query_objects.push_back (id); 40 occ_query_objects.push_back (id);
37 41
38 return count; 42 return count;
39} 43}
40 44
41view::view () 45view::view ()
42: gamma(1.0) 46: gamma(1.0), nz_near (1.F), nz_far (2.F)
43{ 47{
44} 48}
45 49
46view::~view () 50view::~view ()
47{ 51{
… …
88 vs->generation = ctx.generation; 92 vs->generation = ctx.generation;
89 } 93 }
90 } 94 }
91 95
92 return vs; 96 return vs;
93
94} 97}
95 98
96void view::reset_projection () 99void view::reset_projection ()
97{ 100{
98 renormalize (orig, p); 101 renormalize (orig, p);
… …
101 104
102 glMatrixMode (GL_PROJECTION); 105 glMatrixMode (GL_PROJECTION);
103 glLoadIdentity (); 106 glLoadIdentity ();
104 107
105 GLdouble aspect = (GLdouble)w/h; 108 GLdouble aspect = (GLdouble)w/h;
106 GLdouble ymax = z_near * tan (fov * (M_PI / 360.0)); 109 GLdouble ftan = tan (fov * (.5 * M_PI / 180.));
110 GLdouble ymax = z_near * ftan;
111 GLdouble xmax = ymax * aspect;
107 112
108 glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, z_near, z_far); 113 glFrustum (-xmax, xmax, -ymax, ymax, z_near, z_far);
109 114
110 perspfact = z_near / ymax * 0.5 * (GLdouble)h; 115 perspfact = z_near / ymax * 0.5F * h;
111 116
112 d = normalize (d);//D 117 d = normalize (d);//D
113 u = normalize (u);//D 118 u = normalize (u);//D
114 119
115 vec3 rz = -d; 120 vec3 rz = -d;
… …
125 diagfact = abs (rz.x) + abs (rz.y) + abs (rz.z); 130 diagfact = abs (rz.x) + abs (rz.y) + abs (rz.z);
126 //printf ("diagfact = %f\n", diagfact); 131 //printf ("diagfact = %f\n", diagfact);
127 diagfact = sqrtf (3.);//D WHY??? 132 diagfact = sqrtf (3.);//D WHY???
128 133
129 glMultMatrixf (m); 134 glMultMatrixf (m);
130 glTranslatef (-p.x, -p.y, -p.z); 135
131
132 glGetFloatv (GL_PROJECTION_MATRIX, m); 136 glGetFloatv (GL_PROJECTION_MATRIX, m);
133 137
134 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) ); 138 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) );
135 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) ); 139 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) );
136 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) ); 140 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) );
137 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) ); 141 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) );
138 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) ); 142 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) );
139 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) ); 143 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) );
140 144
145 {
146 GLdouble frustlen = z_far - z_near;
147 GLdouble fheight = frustlen * ftan;
148 GLdouble fwidth = fheight * w / h;
149 point half (0, 0, z_near + frustlen * .5);
150 point corner (fwidth, fheight, frustlen);
151
152 frustum.s = sphere (p + d * (.5 * frustlen), length (corner - half));
153 }
154
155 {
156 GLdouble depth = h / ftan;
157
158 frustum.c = cone (p, d, atan (sqrt (GLdouble (w * w + h * h)) * ftan / h));
159 }
160
141 glMatrixMode (GL_MODELVIEW); 161 glMatrixMode (GL_MODELVIEW);
142 glLoadIdentity (); 162 glLoadIdentity ();
163 glTranslatef (-p.x, -p.y, -p.z);
143} 164}
144 165
145void view::begin () 166void view::begin ()
146{ 167{
147 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 168 generation++;
148 169
149 vislist.clear (); 170 vislist.clear ();
150 171
151 generation++; 172 z_near = max (nz_near, 1.F);
152 173 z_far = max (nz_far, z_near * 2.F);
153 farlist.clear ();
154
155 // check occlusion queries
156 for (vector<oq_data>::iterator i = occ_queries.begin (); i != occ_queries.end (); ++i)
157 {
158 occ_query oq(*this, i->data, ::occ_query_result (i->id));
159 i->recv->event (oq);
160 }
161
162 occ_queries.clear ();
163
164 z_far = nz_far;
165 c_far = nc_far; 174 c_far = nc_far;
166 175
167 if (z_far < z_near)
168 z_far = z_near * 2.;
169
170 reset_projection (); 176 reset_projection ();
171 177
178 nz_near = 100.;
172 nc_far = nz_far = z_near + 1.F; 179 nc_far = nz_far = 1.F;
173 world.detect_visibility (*this);
174
175 printf ("far %f cf %f CAM (%d,%d,%d)\n", z_far, c_far, orig.x, orig.y, orig.z);//D
176} 180}
177 181
178void view::end () 182void view::end ()
179{ 183{
180 vislist.clear (); 184 vislist.clear ();
181} 185}
182 186
183#define DEPTH_OFFSET (1. / (GLdouble)(1L << 16)) 187#define DEPTH_OFFSET (1. / (GLdouble)(1L << 16))
184 188
185void view::pass (enum mode m) 189void view::render (enum pass_type p, pass &data)
186{ 190{
187 mode = m; 191 pass_type = p;
192 pass_data = &data;
188 193
189 glDisable (GL_ALPHA_TEST); 194 switch (pass_type)
190 glDisable (GL_BLEND);
191
192 switch (mode)
193 { 195 {
194 case DEPTH: 196 case DEPTH:
197 glColorMask (1, 1, 1, 1);
198 glDepthMask (1);
199
200 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
201
202 //glEnable (GL_STENCIL_TEST); // for depth-passes
203 //glStencilOp (GL_KEEP, GL_KEEP, GL_REPLACE);
204 //glStencilFunc (GL_LESS, 1, 255);
205
195 //glEnable (GL_POLYGON_OFFSET_FILL); 206 //glEnable (GL_POLYGON_OFFSET_FILL);
196 //glPolygonOffset (0, 5); 207 //glPolygonOffset (0, 5);
197 glDisable (GL_MINMAX); 208 glDisable (GL_MINMAX);
198 glDepthRange (DEPTH_OFFSET, 1.); 209 glDepthRange (DEPTH_OFFSET, 1.);
199 glDepthFunc (GL_LESS); 210 glDepthFunc (GL_LESS);
200 glEnable (GL_DEPTH_TEST); 211 glEnable (GL_DEPTH_TEST);
201 glDisable (GL_LIGHTING);
202 glColorMask (0, 0, 0, 0); 212 glColorMask (0, 0, 0, 0);
203 glDepthMask (1); 213 glDisable (GL_DEPTH_CLAMP_NV);
214
215 world.detect_visibility (*this);
216
204 break; 217 break;
205 218
206 case POSTDEPTH: 219 case POSTDEPTH:
207 glEnable (GL_DEPTH_TEST); 220 glDepthRange (0., 1. - DEPTH_OFFSET);
221 glDepthFunc (GL_LESS);
208 glColorMask (0, 0, 0, 0); 222 glColorMask (0, 0, 0, 0);
209 glDepthMask (0); 223 glDepthMask (0);
224 glEnable (GL_DEPTH_CLAMP_NV);
225 glDisable (GL_STENCIL_TEST);
226
227 // check occlusion queries
228 for (vector<oq_data>::iterator i = occ_queries.begin (); i != occ_queries.end (); ++i)
229 {
230 occ_query oq(*this, i->data, ::occ_query_result (i->id));
231 i->recv->event (oq);
232 }
233
234 occ_queries.clear ();
235
210 break; 236 break;
211 237
212 case LIGHTED: 238 case LIGHTED:
239 glClear (GL_STENCIL_BUFFER_BIT);
240 //glEnable (GL_STENCIL_TEST);
213 glEnable (GL_MINMAX); 241 glEnable (GL_MINMAX);
214 //glDisable (GL_POLYGON_OFFSET_FILL);
215 glDepthRange (0., 1. - DEPTH_OFFSET); 242 glDepthRange (0., 1. - DEPTH_OFFSET);
216 glDepthFunc (GL_LESS); 243 glDepthFunc (GL_LESS);
217 glColorMask (1, 1, 1, 0); 244 glColorMask (1, 1, 1, 1);
218 glDepthMask (0); 245 glDepthMask (0);
246 glDisable (GL_DEPTH_CLAMP_NV);
247
219 break; 248 break;
220 } 249 }
221 250
222 for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i) 251 for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i)
223 (*i)->display (*this); 252 (*i)->display (*this);
224 253
254 if (pass_type == DEPTH)
255 printf ("fps %f NF %f:%f vis %d CAM (%d,%d,%d)\n", timer.fps, z_near, z_far, drawn.size (), orig.x, orig.y, orig.z);//D
256
225 drawn.clear (); 257 drawn.clear ();
226 258
227#if 0 259#if 0
228 if (mode == view::DEPTH) 260 if (pass == view::DEPTH)
229 { 261 {
230 glEnable (GL_DEPTH_CLAMP_NV); 262 glEnable (GL_DEPTH_CLAMP_NV);
231 glDepthMask (0); 263 glDepthMask (0);
232 glDepthFunc (GL_LESS); 264 glDepthFunc (GL_LESS);
233 265
… …
241 glDisable (GL_DEPTH_CLAMP_NV); 273 glDisable (GL_DEPTH_CLAMP_NV);
242 } 274 }
243#endif 275#endif
244} 276}
245 277
278void light::enable ()
279{
280 lightpos->set (p);
281}
246 282
283void light::disable ()
284{
285}
286
287static shader::varying_1f camdist;
288static shader::varying_3f lightvec;
289
290void linear_light::vsh ()
291{
292 using namespace shader::compile;
293
294 lightvec = xyz (lightpos - model_view_matrix * vin.vertex);
295 camdist = max (1 - length (lightvec) / radius, 0);
296}
297
298shader::temp_3f linear_light::operator ()()
299{
300 using namespace shader::compile;
301
302 temp_3f res;
303 res = float3 (c.r / 255.F, c.g / 255.F, c.b / 255.F) * (min (intensity * camdist * 0.6F + 0.9F, 1.F));
304
305 return res;
306}
307
308

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