[ViewVC] Diff of: cvs/libgender/view.C

Comparing libgender/view.C (file contents):
Revision 1.32 by root, Wed Oct 6 17:55:40 2004 UTC vs.
Revision 1.63 by root, Tue Oct 19 18:44:07 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;	8	using namespace gl;
		9
		10	vector<GLuint> occ_query_objects;
		11
		12	static 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
		28	inline void end_occ_query ()
		29	{
		30	glEndQueryARB (GL_SAMPLES_PASSED);
		31	}
		32
		33	static 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
10	view::view ()	43	view::view ()
11	: gamma(1.0)	44	: gamma(1.0), nz_near (1.F), nz_far (2.F)
12	{	45	{
13	}	46	}
14		47
15	view::~view ()	48	view::~view ()
16	{	49	{
17	}	50	}
18		51
		52	void view::begin_occ_query (recv_occ_query &recv, void *id)
		53	{
		54	occ_queries.push_back (oq_data (&recv, ::begin_occ_query (), id));
		55	}
		56
		57	void view::end_occ_query ()
		58	{
		59	::end_occ_query ();
		60	}
		61
19	bool view::may_draw (entity_base *e)	62	bool 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
24	drawn.insert (e);	67	drawn.insert (e);
25	return true;	68	return true;
26	}	69	}
27		70
		71	visibility_base *visible::get_visibility (view &ctx)
		72	{
		73	view::visibility_map::iterator i = ctx.vismap.find (this);
		74	visibility_base *vs;
		75
		76	if (i == ctx.vismap.end ())
		77	{
		78	vs = new_visibility ();
		79	ctx.vismap.insert (view::visibility_map::value_type (this, vs));
		80	}
		81	else
		82	{
		83	vs = i->second;
		84
		85	if (vs->generation != ctx.generation)
		86	{
		87	if (vs->generation + 1 != ctx.generation)
		88	clear_visibility (vs);
		89
		90	vs->generation = ctx.generation;
		91	}
		92	}
		93
		94	return vs;
		95
		96	}
		97
28	void view::reset_projection ()	98	void view::reset_projection ()
29	{	99	{
30	renormalize (orig, p);	100	renormalize (orig, p);
31		101
32	glViewport (0, 0, w, h);	102	glViewport (0, 0, w, h);
33		103
34	glMatrixMode (GL_PROJECTION);	104	glMatrixMode (GL_PROJECTION);
35	glLoadIdentity ();	105	glLoadIdentity ();
36		106
37	gl_error = glGetError ();
38	GLdouble aspect = (GLdouble)w/h;	107	GLdouble aspect = (GLdouble)w/h;
39	GLdouble zNear = 0.1;	108	GLdouble ftan = tan (fov * (.5 * M_PI / 180.));
40	GLdouble zFar = 50.;	109	GLdouble ymax = z_near * ftan;
		110	GLdouble xmax = ymax * aspect;
41		111
42	gl_error = glGetError ();
43	GLdouble ymax = zNear * tan (fov * (M_PI / 360.0));
44	glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, zNear, zFar);	112	glFrustum (-xmax, xmax, -ymax, ymax, z_near, z_far);
45		113
46	gl_error = glGetError ();	114	perspfact = z_near / ymax * 0.5F * h;
		115
47	d = normalize (d);//D	116	d = normalize (d);//D
48	u = normalize (u);//D	117	u = normalize (u);//D
		118
49	vec3 rz = -d;	119	vec3 rz = -d;
50	vec3 rx = cross (u, rz);	120	vec3 rx = cross (u, rz);
51	vec3 ry = cross (rz, rx);	121	vec3 ry = cross (rz, rx);
52	gl_error = glGetError ();
53		122
54	matrix &m = projection;	123	matrix &m = projection;
55	m(0,0) = rx.x; m(0,1) = rx.y; m(0,2) = rx.z; m(0,3) = 0;	124	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;	125	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;	126	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;	127	m(3,0) = 0; m(3,1) = 0; m(3,2) = 0; m(3,3) = 1;
59	gl_error = glGetError ();
60		128
61	glMultMatrixf ((GLfloat *)m.data);	129	diagfact = abs (rz.x) + abs (rz.y) + abs (rz.z);
		130	//printf ("diagfact = %f\n", diagfact);
		131	diagfact = sqrtf (3.);//D WHY???
62		132
63	gl_error = glGetError ();	133	glMultMatrixf (m);
		134	glTranslatef (-p.x, -p.y, -p.z);
		135
64	glGetFloatv (GL_PROJECTION_MATRIX, (GLfloat *)&m);	136	glGetFloatv (GL_PROJECTION_MATRIX, m);
65		137
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) );	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) );
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) );	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) );
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) );	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) );
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) );	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) );
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) );	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) );
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) );	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) );
73		144
74	gl_error = glGetError ();	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
75	glMatrixMode (GL_MODELVIEW);	161	glMatrixMode (GL_MODELVIEW);
76	glLoadIdentity ();	162	glLoadIdentity ();
77	glTranslatef (-p.x, -p.y, -p.z);
78	gl_error = glGetError ();
79	}	163	}
80		164
81	void view::begin ()	165	void view::begin ()
82	{	166	{
83	glClear (GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);	167	generation++;
84	glDepthRange (0, 1. - (1. / pow (2., 16.)));
85		168
86	vismap.clear ();
87	vislist.clear ();	169	vislist.clear ();
88		170
89	generation++;	171	z_near = max (nz_near, 1.F);
		172	z_far = max (nz_far, z_near * 2.F);
		173	c_far = nc_far;
90		174
91	reset_projection ();	175	reset_projection ();
92		176
93	for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i)	177	nz_near = 1e37;
94	;	178	nc_far = nz_far = 1.F;
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);
107	}	179	}
108		180
109	void view::end ()	181	void view::end ()
110	{	182	{
111	vismap.clear ();	183	vislist.clear ();
112	}	184	}
113		185
114	void view::pass (enum mode m)	186	#define DEPTH_OFFSET (1. / (GLdouble)(1L << 16))
115	{
116	mode = m;
117		187
118	glDisable (GL_ALPHA_TEST);	188	void view::render (enum pass p)
119	glDisable (GL_BLEND);	189	{
		190	pass = p;
120		191
121	if (mode == view::DEPTH)	192	switch (pass)
122	{	193	{
		194	case DEPTH:
		195	glColorMask (1, 1, 1, 1);
		196	glDepthMask (1);
		197
		198	glClear (GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT \| GL_STENCIL_BUFFER_BIT);
		199
		200	//glEnable (GL_STENCIL_TEST); // for depth-passes
		201	//glStencilOp (GL_KEEP, GL_KEEP, GL_REPLACE);
		202	//glStencilFunc (GL_LESS, 1, 255);
		203
123	glEnable (GL_POLYGON_OFFSET_FILL);	204	//glEnable (GL_POLYGON_OFFSET_FILL);
124	glPolygonOffset (0, 1);	205	//glPolygonOffset (0, 5);
		206	glDisable (GL_MINMAX);
		207	glDepthRange (DEPTH_OFFSET, 1.);
125	glDepthFunc (GL_LESS);	208	glDepthFunc (GL_LESS);
126	glDisable (GL_LIGHTING);	209	glEnable (GL_DEPTH_TEST);
127	glColorMask (0, 0, 0, 0);	210	glColorMask (0, 0, 0, 0);
128	cgGLEnableProfile (vsh_profile);// z-fighting??	211	glDisable (GL_DEPTH_CLAMP_NV);
129	cgGLDisableProfile (fsh_profile);	212
130	}	213	world.detect_visibility (*this);
131	else	214
132	{	215	break;
133	glEnable (GL_MINMAX);	216
134	glDisable (GL_POLYGON_OFFSET_FILL);	217	case POSTDEPTH:
		218	glDepthRange (0., 1. - DEPTH_OFFSET);
135	glDepthFunc (GL_LESS);	219	glDepthFunc (GL_LESS);
		220	glColorMask (0, 0, 0, 0);
136	glDepthMask (0);	221	glDepthMask (0);
137	cgGLEnableProfile (vsh_profile);	222	glEnable (GL_DEPTH_CLAMP_NV);
138	cgGLEnableProfile (fsh_profile);	223	glDisable (GL_STENCIL_TEST);
		224
		225	// check occlusion queries
		226	for (vector<oq_data>::iterator i = occ_queries.begin (); i != occ_queries.end (); ++i)
		227	{
		228	occ_query oq(*this, i->data, ::occ_query_result (i->id));
		229	i->recv->event (oq);
		230	}
		231
		232	occ_queries.clear ();
		233
		234	break;
		235
		236	case LIGHTED:
		237	glClear (GL_STENCIL_BUFFER_BIT);
		238	//glEnable (GL_STENCIL_TEST);
		239	glEnable (GL_MINMAX);
		240	glDepthRange (0., 1. - DEPTH_OFFSET);
		241	glDepthFunc (GL_LESS);
		242	glColorMask (1, 1, 1, 1);
		243	glDepthMask (0);
		244	glDisable (GL_DEPTH_CLAMP_NV);
		245
		246	break;
139	}	247	}
140		248
141	for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i)	249	for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i)
142	(i)->display (this);	250	(i)->display (this);
143		251
		252	if (pass == LIGHTED)
		253	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
		254
144	drawn.clear ();	255	drawn.clear ();
145		256
146	if (mode == view::LIGHTED)	257	#if 0
		258	if (pass == view::DEPTH)
147	{	259	{
148	glEnable (GL_DEPTH_CLAMP_NV);	260	glEnable (GL_DEPTH_CLAMP_NV);
		261	glDepthMask (0);
149	glDepthFunc (GL_LESS);	262	glDepthFunc (GL_LESS);
150	glEnable (GL_COLOR_MATERIAL);	263
151	glDisable (GL_LIGHTING);	264	for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i)
152	#if 1	265	{
153	cgGLDisableProfile (vsh_profile);	266	begin_occ_query (**i);
154	cgGLDisableProfile (fsh_profile);	267	(i)->draw_bbox (this);
		268	end_occ_query ();
		269	}
		270
		271	glDisable (GL_DEPTH_CLAMP_NV);
		272	}
155	#endif	273	#endif
156	glShadeModel (GL_FLAT);
157
158	static int count; count++;
159	if (farlist.size ())
160	printf ("%d: size %d\n", count, farlist.size ());
161
162	for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i)
163	{
164	glColor3f (1 / (GLfloat)(i - farlist.begin()), 1, 1 / (GLfloat)(i - farlist.begin()));
165	(i)->draw_bbox (this);
166	}
167
168	glEnable (GL_DEPTH_TEST);
169	glDisable (GL_DEPTH_CLAMP_NV);
170	glShadeModel (GL_SMOOTH);
171	}
172
173	glColorMask (1, 1, 1, 0);
174	glDepthMask (1);
175
176	}	274	}
177		275
178		276

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Comparing libgender/view.C (file contents): Revision 1.32 by root, Wed Oct 6 17:55:40 2004 UTC vs. Revision 1.63 by root, Tue Oct 19 18:44:07 2004 UTC

Diff Legend

Comparing libgender/view.C (file contents):
Revision 1.32 by root, Wed Oct 6 17:55:40 2004 UTC vs.
Revision 1.63 by root, Tue Oct 19 18:44:07 2004 UTC