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

Comparing libgender/view.C (file contents):
Revision 1.34 by root, Thu Oct 7 23:39:44 2004 UTC vs.
Revision 1.79 by root, Wed Nov 10 01:57:16 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"	7	#include "material.h"
8		8
9	static GLenum gl_error;	9	using namespace gl;
		10
		11	pass_data pass_depth (0, DEPTH);
		12	pass_data pass_postdepth (0, POSTDEPTH);
		13
		14	vector<GLuint> occ_query_objects;
		15
		16	static GLuint begin_occ_query ()
		17	{
		18	GLuint id;
		19
		20	if (occ_query_objects.size ())
		21	{
		22	id = *(occ_query_objects.end () - 1);
		23	occ_query_objects.pop_back ();
		24	}
		25	else
		26	glGenQueries (1, &id);
		27
		28	glBeginQuery (GL_SAMPLES_PASSED, id);
		29	return id;
		30	}
		31
		32	inline void end_occ_query ()
		33	{
		34	glEndQuery (GL_SAMPLES_PASSED);
		35	}
		36
		37	static GLuint occ_query_result (GLuint id)
		38	{
		39	GLuint count;
		40
		41	glGetQueryObjectuiv (id, GL_QUERY_RESULT, &count);
		42	occ_query_objects.push_back (id);
		43
		44	return count;
		45	}
		46
10	view::view ()	47	view::view ()
11	: gamma(1.0)	48	: gamma(1.0), nz_near (1.F), nz_far (2.F)
12	{	49	{
13	}	50	}
14		51
15	view::~view ()	52	view::~view ()
16	{	53	{
		54	}
		55
		56	void view::begin_occ_query (recv_occ_query &recv, void *id)
		57	{
		58	occ_queries.push_back (oq_data (&recv, ::begin_occ_query (), id));
		59	}
		60
		61	void view::end_occ_query ()
		62	{
		63	::end_occ_query ();
		64	}
		65
		66	struct occ_query_material : material
		67	{
		68	void vsh (view &ctx);
		69	void fsh (view &ctx);
		70	};
		71
		72	static struct occ_query_material occ_query_material;
		73
		74	void occ_query_material::vsh (view &ctx)
		75	{
		76	std_vsh ();
		77	}
		78
		79	void occ_query_material::fsh (view &ctx)
		80	{
		81	// nop
17	}	82	}
18		83
19	bool view::may_draw (const entity *e)	84	bool view::may_draw (const entity *e)
20	{	85	{
21	if (drawn.find (e) != drawn.end ())	86	if (drawn.find (e) != drawn.end ())
23		88
24	drawn.insert (e);	89	drawn.insert (e);
25	return true;	90	return true;
26	}	91	}
27		92
		93	visibility_base *visible::get_visibility (view &ctx)
		94	{
		95	view::visibility_map::iterator i = ctx.vismap.find (this);
		96	visibility_base *vs;
		97
		98	if (i == ctx.vismap.end ())
		99	{
		100	vs = new_visibility ();
		101	ctx.vismap.insert (view::visibility_map::value_type (this, vs));
		102	}
		103	else
		104	{
		105	vs = i->second;
		106
		107	if (vs->generation != ctx.generation)
		108	{
		109	if (vs->generation + 1 != ctx.generation)
		110	clear_visibility (vs);
		111
		112	vs->generation = ctx.generation;
		113	}
		114	}
		115
		116	return vs;
		117	}
		118
28	void view::reset_projection ()	119	void view::reset_projection ()
29	{	120	{
30	renormalize (orig, p);	121	renormalize (orig, p);
31		122
32	glViewport (0, 0, w, h);	123	glViewport (0, 0, w, h);
33		124
34	glMatrixMode (GL_PROJECTION);	125	glMatrixMode (GL_PROJECTION);
		126
		127	GLdouble aspect = (GLdouble)w/h;
		128	GLdouble ftan = tanf (fov * GLfloat (.5 * M_PI / 180.));
		129	GLdouble ymax = ftan;
		130	GLdouble xmax = ymax * aspect;
		131
		132	matrix perspective;
		133	{
		134	matrix &m = perspective;
		135
		136	m(0,0) = 1.F / xmax; m(0,1) = 0; m(0,2) = 0; m(0,3) = 0;
		137	m(1,0) = 0; m(1,1) = 1.F / ymax; m(1,2) = 0; m(1,3) = 0;
		138	m(2,0) = 0; m(2,1) = 0; m(2,2) = -1e10F / z_far; m(2,3) = 1;
		139	m(3,0) = 0; m(3,1) = 0; m(3,2) = -1; m(3,3) = 0;
		140
		141	glLoadMatrixf (perspective);
		142	}
		143	//glFrustum (-xmax, xmax, -ymax, ymax, z_near, z_far);
		144
		145	glGetFloatv (GL_PROJECTION_MATRIX, perspective);
		146
		147	perspfact = z_near / ymax * 0.5F * h;
		148
		149	glMatrixMode (GL_MODELVIEW);
35	glLoadIdentity ();	150	glLoadIdentity ();
		151	matrix &m = projection;
36		152
37	gl_error = glGetError ();
38	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));
44	glFrustum (-ymax * aspect, ymax * aspect, -ymax, ymax, zNear, zFar);
45
46	gl_error = glGetError ();
47	d = normalize (d);//D	153	d = normalize (d);//D
48	u = normalize (u);//D	154	u = normalize (u);//D
		155
49	vec3 rz = -d;	156	vec3 rz = -d;
50	vec3 rx = cross (u, rz);	157	vec3 rx = cross (u, rz);
51	vec3 ry = cross (rz, rx);	158	vec3 ry = cross (rz, rx);
52	gl_error = glGetError ();
53		159
54	matrix &m = projection;
55	m(0,0) = rx.x; m(0,1) = rx.y; m(0,2) = rx.z; m(0,3) = 0;	160	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;	161	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;	162	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;	163	m(3,0) = 0; m(3,1) = 0; m(3,2) = 0; m(3,3) = 1;
59	gl_error = glGetError ();
60		164
61	glMultMatrixf ((GLfloat *)m.data);	165	diagfact = abs (rz.x) + abs (rz.y) + abs (rz.z);
		166	//printf ("diagfact = %f\n", diagfact);
		167	diagfact = sqrtf (3.);//D WHY???
62		168
63	gl_error = glGetError ();	169	glMultMatrixf (m);
64	glGetFloatv (GL_PROJECTION_MATRIX, (GLfloat *)&m);	170
		171	glTranslatef (-p.x, -p.y, -p.z);
65		172
66	gl_error = glGetError ();	173	glGetFloatv (GL_MODELVIEW_MATRIX, m);
		174
		175	m = perspective * m;
		176
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) );	177	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) );	178	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) );	179	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) );	180	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) );	181	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) );	182	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		183
74	gl_error = glGetError ();	184	#if 0
75	glMatrixMode (GL_MODELVIEW);	185	{
76	glLoadIdentity ();	186	GLdouble frustlen = z_far - z_near;
77	glTranslatef (-p.x, -p.y, -p.z);	187	GLdouble fheight = frustlen * ftan;
78	gl_error = glGetError ();	188	GLdouble fwidth = fheight * w / h;
		189	point half (0, 0, z_near + frustlen * .5);
		190	point corner (fwidth, fheight, frustlen);
		191
		192	frustum.s = sphere (p + d * (.5 * frustlen), length (corner - half));
		193	}
		194	#endif
		195
		196	{
		197	GLdouble depth = h / ftan;
		198
		199	frustum.c = cone (p, d, atan (sqrt (GLdouble (w * w + h * h)) * ftan / h));
		200	}
79	}	201	}
80		202
81	void view::begin ()	203	void view::begin ()
82	{	204	{
83	glClear (GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);	205	generation++;
84	glDepthRange (0, 1. - (1. / pow (2., 16.)));
85		206
86	vismap.clear ();
87	vislist.clear ();	207	vislist.clear ();
88		208
89	generation++;	209	z_near = max (nz_near, 1.F);
		210	z_far = max (nz_far, z_near * 2.F);
		211	c_far = nc_far;
90		212
91	reset_projection ();	213	reset_projection ();
92		214
93	for (vector<octant *>::iterator i = farlist.begin (); i != farlist.end (); ++i)	215	nz_near = 100.;
94	;	216	nc_far = nz_far = 1.F;
95	farlist.clear ();
96		217
97	// check occlusion queries here	218	first_lighted = false;
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	}	219	}
108		220
109	void view::end ()	221	void view::end ()
110	{	222	{
111	vismap.clear ();	223	vislist.clear ();
112	}	224	}
113		225
114	void view::pass (enum mode m)	226	#define DEPTH_OFFSET (1. / (GLdouble)(1L << 16))
115	{
116	mode = m;
117		227
118	glDisable (GL_ALPHA_TEST);	228	void view::render (pass_data &pass)
119	glDisable (GL_BLEND);	229	{
		230	this->pass = &pass;
120		231
121	if (mode == view::DEPTH)	232	stat1 = stat2 = 0; //D
		233
		234	switch (pass.type)
122	{	235	{
		236	case DEPTH:
		237	glColorMask (1, 1, 1, 1);
		238	glDepthMask (1);
		239	glDisable (GL_BLEND);
		240
		241	//glClear (GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT \| GL_STENCIL_BUFFER_BIT);
		242	glClear (GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
		243
		244	//glEnable (GL_STENCIL_TEST); // for depth-passes
		245	//glStencilOp (GL_KEEP, GL_KEEP, GL_REPLACE);
		246	//glStencilFunc (GL_LESS, 1, 255);
		247
123	glEnable (GL_POLYGON_OFFSET_FILL);	248	//glEnable (GL_POLYGON_OFFSET_FILL);
124	glPolygonOffset (0, 1);	249	//glPolygonOffset (0, 5);
		250	glEnable (GL_CULL_FACE);
		251	glDisable (GL_MINMAX);
		252	glDepthRange (DEPTH_OFFSET, 1.);
125	glDepthFunc (GL_LESS);	253	glDepthFunc (GL_LESS);
126	glDisable (GL_LIGHTING);	254	glEnable (GL_DEPTH_TEST);
127	glColorMask (0, 0, 0, 0);	255	glColorMask (0, 0, 0, 0);
128	cgGLEnableProfile (vsh_profile);// z-fighting??	256	glDisable (GL_DEPTH_CLAMP_NV);
129	cgGLDisableProfile (fsh_profile);	257
130	}	258	world.detect_visibility (*this);
131	else	259
132	{	260	for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i)
133	glEnable (GL_MINMAX);	261	(i)->draw_depth (this);
134	glDisable (GL_POLYGON_OFFSET_FILL);	262
		263	if (pass.type == DEPTH)
		264	printf ("fps %f NF %f:%f vis %d,%d (%d,%d) CAM (%ld,%ld,%ld)\n",
		265	timer.fps, z_near, z_far, vislist.size (), drawn.size (), stat1, stat2, orig.x, orig.y, orig.z);//D
		266
		267	break;
		268
		269	case POSTDEPTH:
		270	glDepthRange (0., 1. - DEPTH_OFFSET);
135	glDepthFunc (GL_LESS);	271	glDepthFunc (GL_LESS);
		272	glColorMask (0, 0, 0, 0);
136	glDepthMask (0);	273	glDepthMask (0);
137	cgGLEnableProfile (vsh_profile);	274	glEnable (GL_DEPTH_CLAMP_NV);
138	cgGLEnableProfile (fsh_profile);	275	glDisable (GL_STENCIL_TEST);
		276	glDisable (GL_CULL_FACE);
		277
		278	occ_query_material.enable (*this);
		279
		280	// check occlusion queries
		281	for (vector<oq_data>::iterator i = occ_queries.begin (); i != occ_queries.end (); ++i)
		282	{
		283	occ_query oq(*this, i->data, ::occ_query_result (i->id));
		284	i->recv->event (oq);
		285	}
		286
		287	occ_query_material.disable (*this);
		288
		289	occ_queries.clear ();
		290
		291	for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i)
		292	(i)->draw_postdepth (this);
		293
		294	first_lighted = true;
		295
		296	break;
		297
		298	case LIGHTED:
		299	if (first_lighted)
		300	glDisable (GL_BLEND);
		301	else
		302	{
		303	glBlendFunc (GL_ONE, GL_ONE);
		304	glEnable (GL_BLEND);
		305	}
		306
		307	//glClear (GL_STENCIL_BUFFER_BIT);
		308	//glEnable (GL_STENCIL_TEST);
		309	glEnable (GL_CULL_FACE);
		310	glEnable (GL_MINMAX);
		311	glDepthRange (0., 1. - DEPTH_OFFSET);
		312	glDepthFunc (GL_LESS);
		313	glColorMask (1, 1, 1, 1);
		314	glDepthMask (0);
		315	glDisable (GL_DEPTH_CLAMP_NV);
		316
		317	for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i)
		318	(i)->draw_lighted (this);
		319
		320	first_lighted = false;
		321
		322	break;
139	}	323	}
140		324
141	for (vector<octant *>::iterator i = vislist.begin (); i != vislist.end (); ++i)
142	(i)->display (this);
143
144	drawn.clear ();	325	drawn.clear ();
145
146	if (mode == view::LIGHTED)
147	{
148	glEnable (GL_DEPTH_CLAMP_NV);
149	glDepthFunc (GL_LESS);
150	glEnable (GL_COLOR_MATERIAL);
151	glDisable (GL_LIGHTING);
152	#if 1
153	cgGLDisableProfile (vsh_profile);
154	cgGLDisableProfile (fsh_profile);
155	#endif
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	}	326	}
179		327
		328	void light::enable ()
		329	{
		330	lightpos->set (p);
		331	}
180		332
		333	void light::disable ()
		334	{
		335	}
		336
		337	static shader::varying_1f camdist;
		338	static shader::varying_3f lightvec;
		339
		340	void linear_light::vsh ()
		341	{
		342	using namespace shader::compile;
		343
		344	lightvec = xyz (lightpos - model_view_matrix * vin.vertex);
		345	camdist = max (1 - length (lightvec) / radius, 0);
		346
		347	fsh ();
		348	}
		349
		350	void linear_light::fsh ()
		351	{
		352	using namespace shader::compile;
		353
		354	sh_lightvec = lightvec;
		355	sh_colour = float3 (c.r / 255.F, c.g / 255.F, c.b / 255.F) * (min (intensity * camdist * 100.F + 0.9F, 1.F));
		356	}
		357
		358

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Comparing libgender/view.C (file contents): Revision 1.34 by root, Thu Oct 7 23:39:44 2004 UTC vs. Revision 1.79 by root, Wed Nov 10 01:57:16 2004 UTC

Diff Legend

Comparing libgender/view.C (file contents):
Revision 1.34 by root, Thu Oct 7 23:39:44 2004 UTC vs.
Revision 1.79 by root, Wed Nov 10 01:57:16 2004 UTC