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Comparing libgender/view.C (file contents):
Revision 1.2 by root, Sun Oct 3 22:46:03 2004 UTC vs.
Revision 1.36 by root, Sat Oct 9 02:08:29 2004 UTC

1#include <cmath> 1#include <cmath>
2
3#include <GL/gl.h>
4#include <GL/glext.h>
2 5
3#include "oct.h" 6#include "oct.h"
4#include "view.h" 7#include "view.h"
5 8
6draw_context::draw_context (view &v) 9 static GLenum gl_error;
7: v(v), l(0), mode(LIGHTED) 10view::view ()
11: gamma(1.0)
8{ 12{
9} 13}
10 14
11draw_context::~draw_context () 15view::~view ()
12{ 16{
13} 17}
14 18
15bool draw_context::may_draw (entity_base *e) 19bool view::may_draw (const entity *e)
16{ 20{
17 if (drawn.find (e) != drawn.end ()) 21 if (drawn.find (e) != drawn.end ())
18 return false; 22 return false;
19 23
20 drawn.insert (e); 24 drawn.insert (e);
21 return true; 25 return true;
22} 26}
23 27
24void view::draw (draw_context &ctx) 28void view::reset_projection ()
25{ 29{
30 renormalize (orig, p);
31
26 glViewport (0, 0, w, h); 32 glViewport (0, 0, w, h);
27 33
28 glMatrixMode (GL_PROJECTION); 34 glMatrixMode (GL_PROJECTION);
29 glLoadIdentity (); 35 glLoadIdentity ();
30 36
37 gl_error = glGetError ();
31 GLdouble aspect = (GLdouble)w/h; 38 GLdouble aspect = (GLdouble)w/h;
32 GLdouble zNear = 0.0001; 39 GLdouble zNear = 1.;
33 GLdouble zFar = 1000.; 40 GLdouble zFar = 500.;
34 41
42 gl_error = glGetError ();
35 GLdouble ymax = zNear * tan (fov * (M_PI / 360.0)); 43 GLdouble ymax = zNear * tan (fov * (M_PI / 360.0));
36 glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, zNear, zFar); 44 glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, zNear, zFar);
37 45
46 gl_error = glGetError ();
47 d = normalize (d);//D
48 u = normalize (u);//D
38 vec3 rz = -d; 49 vec3 rz = -d;
39 vec3 rx = cross (u, rz); 50 vec3 rx = cross (u, rz);
40 vec3 ry = cross (rz, rx); 51 vec3 ry = cross (rz, rx);
52 gl_error = glGetError ();
41 53
42 GLfloat m[4][4]; 54 matrix &m = projection;
43 m[0][0] = rx.x; m[0][1] = rx.y; m[0][2] = rx.z; m[0][3] = 0; 55 m(0,0) = rx.x; m(0,1) = rx.y; m(0,2) = rx.z; m(0,3) = 0;
44 m[1][0] = ry.x; m[1][1] = ry.y; m[1][2] = ry.z; m[1][3] = 0; 56 m(1,0) = ry.x; m(1,1) = ry.y; m(1,2) = ry.z; m(1,3) = 0;
45 m[2][0] = rz.x; m[2][1] = rz.y; m[2][2] = rz.z; m[2][3] = 0; 57 m(2,0) = rz.x; m(2,1) = rz.y; m(2,2) = rz.z; m(2,3) = 0;
46 m[3][0] = 0; m[3][1] = 0; m[3][2] = 0; m[3][3] = 1; 58 m(3,0) = 0; m(3,1) = 0; m(3,2) = 0; m(3,3) = 1;
47 glMultMatrixf ((GLfloat *)m); 59 gl_error = glGetError ();
48 glTranslatef (-p.x, -p.y, -p.z);
49 60
61 glMultMatrixf ((GLfloat *)m.data);
62
63 gl_error = glGetError ();
64 glGetFloatv (GL_PROJECTION_MATRIX, (GLfloat *)&m);
65
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) );
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) );
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) );
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) );
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) );
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) );
73
74 gl_error = glGetError ();
50 glMatrixMode (GL_MODELVIEW); 75 glMatrixMode (GL_MODELVIEW);
51 glLoadIdentity (); 76 glLoadIdentity ();
52 77 glTranslatef (-p.x, -p.y, -p.z);
53 world.draw (ctx); 78 gl_error = glGetError ();
54} 79}
55 80
81void view::begin ()
82{
83 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
84 glDepthRange (0, 1. - (1. / pow (2., 16.)));
85
86 vismap.clear ();
87 vislist.clear ();
88
89 generation++;
90
91 reset_projection ();
92
93 for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i)
94 ;
95
96 farlist.clear ();
97
98 // check occlusion queries here
99#if 0
100 for (vector<octant *>::iterator i = checklist.begin (); i != checklist.end (); ++i)
101 //printf ("%p %d\n", *i, occ_query_result ((*i)->occ_query));
102 occ_query_result ((*i)->occ_query);
103
104 checklist.clear ();
105#endif
106
107 world.detect_visibility (*this);
108}
109
110void view::end ()
111{
112 vismap.clear ();
113}
114
115void view::pass (enum mode m)
116{
117 mode = m;
118
119 glDisable (GL_ALPHA_TEST);
120 glDisable (GL_BLEND);
121
122 if (mode == view::DEPTH)
123 {
124 glEnable (GL_POLYGON_OFFSET_FILL);
125 glPolygonOffset (0, 1);
126 glDepthFunc (GL_LESS);
127 glDisable (GL_LIGHTING);
128 glColorMask (0, 0, 0, 0);
129 cgGLEnableProfile (vsh_profile);// z-fighting??
130 cgGLDisableProfile (fsh_profile);
131 }
132 else
133 {
134 glEnable (GL_MINMAX);
135 glDisable (GL_POLYGON_OFFSET_FILL);
136 glDepthFunc (GL_LESS);
137 glDepthMask (0);
138 cgGLEnableProfile (vsh_profile);
139 cgGLEnableProfile (fsh_profile);
140 }
141
142 for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i)
143 (*i)->display (*this);
144
145 drawn.clear ();
146
147 if (mode == view::DEPTH || 1)
148 {
149 glEnable (GL_DEPTH_CLAMP_NV);
150 glDepthFunc (GL_LESS);
151 if (1) glDepthFunc (GL_LEQUAL);
152 glEnable (GL_COLOR_MATERIAL);
153 glDisable (GL_LIGHTING);
154 cgGLDisableProfile (vsh_profile);
155 cgGLDisableProfile (fsh_profile);
156 glShadeModel (GL_FLAT);
157
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)
165 {
166 glColor3f (1,0,0);
167 (*i)->draw_bbox (*this);
168 }
169
170 glEnable (GL_DEPTH_TEST);
171 glDisable (GL_DEPTH_CLAMP_NV);
172 glShadeModel (GL_SMOOTH);
173 }
174
175 glColorMask (1, 1, 1, 0);
176 glDepthMask (1);
177
178}
179
180

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