[ViewVC] Diff of: radiance/ray/src/hd/rhd

Comparing ray/src/hd/rhd_ogl.c (file contents):
Revision 3.3 by gwlarson, Mon Dec 21 11:42:38 1998 UTC vs.
Revision 3.31 by greg, Thu Sep 6 00:07:43 2012 UTC

#	Line 1 \| Line 1
1	–	/* Copyright (c) 1998 Silicon Graphics, Inc. */
2	–
1		#ifndef lint
2	<	static char SCCSid[] = "$SunId$ SGI";
2	>	static const char RCSid[] = "$Id$";
3		#endif
6	–
4		/*
5		* OpenGL driver for holodeck display.
6		* Based on GLX driver using T-mesh.
#	Line 20 \| Line 17 \| static char SCCSid[] = "$SunId$ SGI";
17		#endif
18		#endif
19
23	–	#include "standard.h"
20
21	<	#include <sys/types.h>
21	>	#include <time.h>
22		#include <GL/glx.h>
23		#include <GL/glu.h>
24		#ifdef STEREO
25		#include <X11/extensions/SGIStereo.h>
26		#endif
27
28	+	#include "standard.h"
29		#include "rhd_odraw.h"
30	+	#include "rhdisp.h"
31	+	#include "paths.h"
32		#ifdef DOBJ
33		#include "rhdobj.h"
34		#endif
#	Line 37 \| Line 36 \| static char SCCSid[] = "$SunId$ SGI";
36		#include "x11icon.h"
37
38		#ifndef RAYQLEN
39	<	#define RAYQLEN 10240 /* max. rays to queue before flush */
39	>	#define RAYQLEN 0 /* max. rays to queue before flush */
40		#endif
41	<
42	<	#ifndef PORTALP
43	<	#define PORTRED 2 /* portal red color */
45	<	#define PORTGRN -1 /* portal green left alone */
46	<	#define PORTBLU 128 /* portal blue color */
47	<	#define PORTALP -1 /* don't use alpha channel */
41	>	#ifndef MINWIDTH
42	>	#define MINWIDTH 480 /* minimum graphics window width */
43	>	#define MINHEIGHT 400 /* minimum graphics window height */
44		#endif
45	<	#define isportal(c) ((PORTRED<0 \|\| (c)[0]==PORTRED) && \
46	<	(PORTGRN<0 \|\| (c)[1]==PORTGRN) && \
47	<	(PORTBLU<0 \|\| (c)[2]==PORTBLU) && \
48	<	(PORTALP<0 \|\| (c)[3]==PORTALP))
45	>	#ifndef VIEWDIST
46	>	#define VIEWDIST 356 /* assumed viewing distance (mm) */
47	>	#endif
48	>	#ifndef BORWIDTH
49	>	#define BORWIDTH 5 /* border width */
50	>	#endif
51
52		#ifndef FEQ
53		#define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY)
54		#endif
55
56	+	#define VWHEADLOCK 01 /* head position is locked flag */
57	+	#define VWPERSP 02 /* perspective view is set */
58	+	#define VWORTHO 04 /* orthographic view is set */
59	+	#define VWCHANGE 010 /* view has changed */
60	+	#define VWSTEADY 020 /* view is now steady */
61	+	#define VWMAPPED 040 /* window is mapped */
62	+
63		#define GAMMA 1.4 /* default gamma correction */
64
65		#define FRAMESTATE(s) (((s)&(ShiftMask\|ControlMask))==(ShiftMask\|ControlMask))
#	Line 64 \| Line 69 \| static char SCCSid[] = "$SunId$ SGI";
69		#define MOVDEG (-5) /* degrees to orbit CW/down /frame */
70		#define MOVORB(s) ((s)&ShiftMask ? 1 : (s)&ControlMask ? -1 : 0)
71
67	–	#define MINWIDTH 480 /* minimum graphics window width */
68	–	#define MINHEIGHT 400 /* minimum graphics window height */
69	–
70	–	#define VIEWDIST 356 /* assumed viewing distance (mm) */
71	–
72	–	#define BORWIDTH 5 /* border width */
73	–
72		#define setstereobuf(bid) (glXWaitGL(), \
73		XSGISetStereoBuffer(ourdisplay, gwind, bid), \
74		glXWaitX())
#	Line 84 \| Line 82 \| static char SCCSid[] = "$SunId$ SGI";
82
83		struct driver odev; /* global device driver structure */
84
85	+	TMstruct tmGlobal; / global tone-mapping structure */
86	+
87		char odev_args[64]; /* command arguments */
88
89		static GLfloat depthbuffer = NULL; / depth buffer */
#	Line 97 \| Line 97 \| *static int rayqleft = 0; / rays left to queue before**
97
98		static XEvent currentevent; /* current event */
99
100	–	static int mapped = 0; /* window is mapped? */
100		static unsigned long ourblack=0, ourwhite=~0;
101
102		static Display ourdisplay = NULL; / our display */
#	Line 115 \| Line 114 \| static double dev_zrat; /* (1. - dev_zmin/dev_zmax) *
114
115		static int inpresflags; /* input result flags */
116
117	<	static int headlocked; /* lock vertical motion */
117	>	static int viewflags; /* what's happening with view */
118
119	<	static int isperspective; /* perspective/ortho view */
121	<
122	<	static int viewsteady; /* is view steady? */
123	<
119	>	/*
120		static int resizewindow(), getevent(), getkey(), moveview(), wipeclean(),
121		xferdepth(), freedepth(), setglortho(),
122		setglpersp(), getframe(), getmove(), fixwindow(), mytmflags();
123
124		static double getdistance();
125	+	*/
126	+	static void checkglerr(char *where);
127	+	static void xferdepth(void);
128	+	static void freedepth(void);
129	+	static double getdistance(int dx, int dy, FVECT direc);
130	+	static int mytmflags(void);
131	+	static void getevent(void);
132	+	static void draw3dline(register FVECT wp[2]);
133	+	static void draw_grids(int fore);
134	+	static int moveview(int dx, int dy, int mov, int orb);
135	+	static void getframe(XButtonPressedEvent *ebut);
136	+	static void getmove(XButtonPressedEvent *ebut);
137	+	static void getkey(register XKeyPressedEvent *ekey);
138	+	static void fixwindow(register XExposeEvent *eexp);
139	+	static void resizewindow(register XConfigureEvent *ersz);
140	+	static void waitabit(void);
141	+	static void setglpersp(void);
142	+	static void setglortho(void);
143	+	static void wipeclean(void);
144
145	+
146		#ifdef STEREO
147	<	static int pushright(), popright();
147	>	static void pushright(void);
148	>	static void popright(void);
149		#endif
150
151		extern int gmPortals; /* GL portal list id */
#	Line 136 \| Line 153 \| *extern int gmPortals; / GL portal list id /*
153		extern time_t time();
154
155
156	+	extern void
157		dev_open(id) /* initialize GLX driver */
158		char *id;
159		{
160		extern char *getenv();
161		static RGBPRIMS myprims = STDPRIMS;
162	<	#if (PORTALP<0)
163	<	static int atlBest[] = {GLX_RGBA, GLX_RED_SIZE,8,
164	<	GLX_GREEN_SIZE,8, GLX_BLUE_SIZE,8,
165	<	GLX_DEPTH_SIZE,15, None};
166	<	#else
167	<	static int atlBest[] = {GLX_RGBA, GLX_RED_SIZE,8,
150	<	GLX_GREEN_SIZE,8, GLX_BLUE_SIZE,8,
151	<	GLX_ALPHA_SIZE,2, GLX_DEPTH_SIZE,15, None};
152	<	#endif
162	>	static int atlBest[] = {GLX_RGBA, GLX_DOUBLEBUFFER,
163	>	GLX_RED_SIZE,8, GLX_GREEN_SIZE,8,
164	>	GLX_BLUE_SIZE,8, GLX_DEPTH_SIZE,15, None};
165	>	static int atlOK[] = {GLX_RGBA, GLX_DOUBLEBUFFER,
166	>	GLX_RED_SIZE,4, GLX_GREEN_SIZE,4,
167	>	GLX_BLUE_SIZE,4, GLX_DEPTH_SIZE,15, None};
168		char *ev;
169		double gamval = GAMMA;
170		RGBPRIMP dpri = stdprims;
#	Line 162 \| Line 177 \| *char id;**
177		#endif
178		/* open display server */
179		ourdisplay = XOpenDisplay(NULL);
180	<	if (ourdisplay == NULL)
181	<	error(USER, "cannot open X-windows; DISPLAY variable set?\n");
180	>	CHECK(ourdisplay==NULL, USER,
181	>	"cannot open X-windows; DISPLAY variable set?");
182		#ifdef STEREO
183		switch (XSGIQueryStereoMode(ourdisplay, ourroot)) {
184		case STEREO_TOP:
#	Line 171 \| Line 186 \| *char id;**
186		break;
187		case STEREO_OFF:
188		error(USER,
189	<	"wrong video mode: run \"/usr/gfx/setmon -n STR_TOP\" first");
189	>	"wrong video mode: run \"/usr/gfx/setmon -n STR_TOP\" first");
190		case X_STEREO_UNSUPPORTED:
191		error(USER, "stereo mode not supported on this screen");
192		default:
#	Line 181 \| Line 196 \| *char id;**
196		/* find a usable visual */
197		ourvinf = glXChooseVisual(ourdisplay, ourscreen, atlBest);
198		if (ourvinf == NULL)
199	<	error(USER, "no suitable visuals available");
199	>	ourvinf = glXChooseVisual(ourdisplay, ourscreen, atlOK);
200	>	CHECK(ourvinf==NULL, USER, "no suitable visuals available");
201		/* get a context */
202		gctx = glXCreateContext(ourdisplay, ourvinf, NULL, GL_TRUE);
203		/* set gamma and tone mapping */
#	Line 195 \| Line 211 \| *char id;**
211		&myprims[BLU][CIEX],&myprims[BLU][CIEY],
212		&myprims[WHT][CIEX],&myprims[WHT][CIEY]) >= 6)
213		dpri = myprims;
214	<	if (tmInit(mytmflags(), dpri, gamval) == NULL)
214	>	tmGlobal = tmInit(mytmflags(), dpri, gamval);
215	>	if (tmGlobal == NULL)
216		error(SYSTEM, "not enough memory in dev_open");
217		/* open window */
218		ourwinattr.background_pixel = ourblack;
#	Line 213 \| Line 230 \| *char id;**
230		#endif
231		BORWIDTH, ourvinf->depth, InputOutput, ourvinf->visual,
232		CWBackPixel\|CWBorderPixel\|CWColormap\|CWEventMask, &ourwinattr);
233	<	if (gwind == 0)
217	<	error(SYSTEM, "cannot create window\n");
233	>	CHECK(gwind==0, SYSTEM, "cannot create window");
234		XStoreName(ourdisplay, gwind, id);
235		/* set window manager hints */
236		ourxwmhints.flags = InputHint\|IconPixmapHint;
237		ourxwmhints.input = True;
238	<	ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay,
239	<	gwind, x11icon_bits, x11icon_width, x11icon_height);
238	>	ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay, gwind,
239	>	(char *)x11icon_bits, x11icon_width, x11icon_height);
240		XSetWMHints(ourdisplay, gwind, &ourxwmhints);
241		oursizhints.min_width = MINWIDTH;
242		#ifdef STEREO
#	Line 238 \| Line 254 \| *char id;**
254		glXMakeCurrent(ourdisplay, gwind, gctx);
255		glEnable(GL_DEPTH_TEST);
256		glDepthFunc(GL_LEQUAL);
257	<	glDisable(GL_DITHER);
257	>	glClearColor(0, 0, 0, 0);
258		glFrontFace(GL_CCW);
259		glDisable(GL_CULL_FACE);
260		glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
261		glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
262	+	glPixelStorei(GL_PACK_ALIGNMENT, 1);
263	+	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
264		/* figure out sensible view */
265		pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) /
266		DisplayWidth(ourdisplay, ourscreen);
#	Line 253 \| Line 271 \| *char id;**
271		setstereobuf(STEREO_BUFFER_LEFT);
272		#endif
273		checkglerr("setting rendering parameters");
274	<	copystruct(&odev.v, &stdview);
274	>	odev.v = stdview;
275		odev.v.type = VT_PER;
276	<	headlocked = 0; /* free up head movement */
259	<	viewsteady = 1; /* view starts static */
260	<	isperspective = -1; /* but no view set, yet */
276	>	viewflags = VWSTEADY; /* view starts static */
277		/* map the window */
278		XMapWindow(ourdisplay, gwind);
279		dev_input(); /* sets size and view angles */
280		if (!odInit(DisplayWidth(ourdisplay,ourscreen) *
281	<	DisplayHeight(ourdisplay,ourscreen) / 10))
281	>	DisplayHeight(ourdisplay,ourscreen) / 3))
282		error(SYSTEM, "insufficient memory for value storage");
283		odev.name = id;
284		odev.firstuse = 1; /* can't recycle samples */
#	Line 270 \| Line 286 \| *char id;**
286		}
287
288
289	<	dev_close() /* close our display and free resources */
289	>	extern void
290	>	dev_close(void) /* close our display and free resources */
291		{
292		#ifdef DOBJ
293		dobj_cleanup();
#	Line 285 \| Line 302 \| *dev_close() / close our display and free resources**
302		gwind = 0;
303		XCloseDisplay(ourdisplay);
304		ourdisplay = NULL;
305	<	tmDone(NULL);
305	>	tmDone(tmGlobal);
306		odev.v.type = 0;
307		odev.hres = odev.vres = 0;
308		odev.ifd = -1;
309		}
310
311
312	<	dev_clear() /* clear our representation */
312	>	extern void
313	>	dev_clear(void) /* clear our representation */
314		{
315	<	wipeclean();
315	>	viewflags \|= VWCHANGE; /* pretend our view has changed */
316	>	wipeclean(); /* clean off display and samples */
317	>	dev_flush(); /* redraw geometry & get depth */
318		rayqleft = 0; /* hold off update */
319		}
320
321
322	<	int
323	<	dev_view(nv) /* assign new driver view */
324	<	register VIEW *nv;
322	>	extern int
323	>	dev_view( /* assign new driver view */
324	>	register VIEW *nv
325	>	)
326		{
327	+	#ifdef STEREO
328		double d;
329	<
329	>	#endif
330		if (nv->type != VT_PER \|\| /* check view legality */
331		nv->horiz > 160. \|\| nv->vert > 160.) {
332		error(COMMAND, "illegal view type/angle");
#	Line 340 \| Line 362 \| *register VIEW nv;**
362		XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres);
363		dev_input(); /* get resize event */
364		}
365	<	copystruct(&odev.v, nv); /* setview() already called */
365	>	odev.v = nv; / setview() already called */
366	>	viewflags \|= VWCHANGE;
367	>	}
368		#ifdef STEREO
369	<	copystruct(&vwright, nv);
370	<	d = eyesepdist / sqrt(nv->hn2);
371	<	VSUM(vwright.vp, nv->vp, nv->hvec, d);
372	<	/* setview(&vwright); -- Unnecessary */
369	>	vwright = *nv;
370	>	d = eyesepdist / sqrt(nv->hn2);
371	>	VSUM(vwright.vp, nv->vp, nv->hvec, d);
372	>	/* setview(&vwright); -- Unnecessary */
373		#endif
350	–	} else
351	–	viewsteady = 1;
374		wipeclean();
375		return(1);
376		}
377
378
379	<	dev_section(gfn, pfn) /* add octree for geometry rendering */
380	<	char gfn, pfn;
379	>	extern void
380	>	dev_section( /* add octree for geometry rendering */
381	>	char *gfn,
382	>	char *pfn
383	>	)
384		{
360	–	extern char *index();
361	–	char *cp;
362	–
385		if (gfn == NULL) {
386		gmEndGeom();
387		gmEndPortal();
388	+	wipeclean(); /* new geometry, so redraw it */
389		return;
390		}
391		if (access(gfn, R_OK) == 0)
#	Line 378 \| Line 401 \| *char gfn, pfn;*
401		}
402
403
404	<	dev_auxcom(cmd, args) /* process an auxiliary command */
405	<	char cmd, args;
404	>	extern void
405	>	dev_auxcom( /* process an auxiliary command */
406	>	char *cmd,
407	>	char *args
408	>	)
409		{
410		#ifdef DOBJ
411	<	if (dobj_command(cmd, args) >= 0)
411	>	int vischange;
412	>
413	>	if ((vischange = dobj_command(cmd, args)) >= 0) {
414	>	if (vischange) {
415	>	imm_mode = beam_sync(1) > 0;
416	>	dev_clear();
417	>	}
418		return;
419	+	}
420		#endif
421		sprintf(errmsg, "%s: unknown command", cmd);
422		error(COMMAND, errmsg);
423		}
424
425
426	<	VIEW *
427	<	dev_auxview(n, hvres) /* return nth auxiliary view */
428	<	int n;
429	<	int hvres[2];
426	>	extern VIEW *
427	>	dev_auxview( /* return nth auxiliary view */
428	>	int n,
429	>	int hvres[2]
430	>	)
431		{
432		hvres[0] = odev.hres; hvres[1] = odev.vres;
433		if (n == 0)
#	Line 406 \| Line 440 \| int hvres[2];
440		}
441
442
443	<	int
444	<	dev_input() /* get X11 input */
443	>	extern int
444	>	dev_input(void) /* get X11 input */
445		{
446		inpresflags = 0;
447
#	Line 422 \| Line 456 \| *dev_input() / get X11 input /*
456		}
457
458
459	<	dev_value(c, d, p) /* add a pixel value to our texture */
460	<	COLR c;
461	<	FVECT d, p;
459	>	extern void
460	>	dev_value( /* add a pixel value to our texture */
461	>	COLR c,
462	>	FVECT d,
463	>	FVECT p
464	>	)
465		{
466		#ifdef DOBJ
467		if (dobj_lightsamp != NULL) { /* in light source sampling */
#	Line 438 \| Line 475 \| FVECT d, p;
475		}
476
477
478	<	int
479	<	dev_flush() /* flush output as appropriate */
478	>	extern int
479	>	dev_flush(void) /* flush output as appropriate */
480		{
481		int ndrawn;
482
483	<	if (mapped && isperspective > 0) {
483	>	if ((viewflags&(VWMAPPED\|VWPERSP)) == (VWMAPPED\|VWPERSP)) {
484		#ifdef STEREO
485		pushright(); /* draw right eye */
486		ndrawn = gmDrawGeom();
487		#ifdef DOBJ
488		ndrawn += dobj_render();
489		#endif
453	–	if (ndrawn)
454	–	gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP);
490		checkglerr("rendering right eye");
491		popright(); /* draw left eye */
492		#endif
#	Line 459 \| Line 494 \| *dev_flush() / flush output as appropriate /*
494		#ifdef DOBJ
495		ndrawn += dobj_render();
496		#endif
497	<	if (ndrawn)
463	<	gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP);
497	>	glXSwapBuffers(ourdisplay, gwind);
498		checkglerr("rendering base view");
499		}
500	<	if (mapped && viewsteady) {
501	<	if (isperspective) { /* first time after steady */
500	>	if ((viewflags&(VWMAPPED\|VWSTEADY\|VWPERSP\|VWORTHO)) ==
501	>	(VWMAPPED\|VWSTEADY\|VWPERSP)) {
502	>	/* first time after steady */
503	>	if (ndrawn)
504	>	xferdepth(); /* transfer and clear depth */
505	>	setglortho(); /* set orthographic view */
506	>
507	>	}
508	>	if ((viewflags&(VWMAPPED\|VWSTEADY\|VWPERSP\|VWORTHO)) ==
509	>	(VWMAPPED\|VWSTEADY\|VWORTHO)) {
510	>	/* else update cones */
511		#ifdef STEREO
512	<	pushright();
513	<	popright();
512	>	pushright();
513	>	odUpdate(1); /* draw right eye */
514	>	popright();
515		#endif
516	<	if (ndrawn)
517	<	xferdepth(); /* transfer and clear depth */
474	<	setglortho(); /* set orthographic view */
475	<	} else {
476	<	#ifdef STEREO
477	<	pushright();
478	<	odUpdate(1); /* draw right eye */
479	<	popright();
480	<	#endif
481	<	odUpdate(0); /* draw left eye */
482	<	}
516	>	odUpdate(0); /* draw left eye */
517	>	glFlush(); /* flush OpenGL */
518		}
484	–	glFlush(); /* flush OpenGL */
519		rayqleft = RAYQLEN;
520		/* flush X11 and return # pending */
521		return(odev.inpready = XPending(ourdisplay));
522		}
523
524
525	<	checkglerr(where) /* check for GL or GLU error */
526	<	char *where;
525	>	static void
526	>	checkglerr( /* check for GL or GLU error */
527	>	char *where
528	>	)
529		{
530		register GLenum errcode;
531
#	Line 501 \| Line 537 \| *char where;**
537		}
538
539
540	<	static
541	<	xferdepth() /* load and clear depth buffer */
540	>	static void
541	>	xferdepth(void) /* load and clear depth buffer */
542		{
543		register GLfloat *dbp;
544	<	register GLubyte *cbuf;
544	>	register GLubyte *pbuf;
545
546		if (depthbuffer == NULL) { /* allocate private depth buffer */
547		#ifdef STEREO
#	Line 514 \| Line 550 \| *xferdepth() / load and clear depth buffer /*
550		#endif
551		depthbuffer = (GLfloat *)malloc(
552		odev.hresodev.vressizeof(GLfloat));
553	<	if (depthbuffer == NULL)
518	<	error(SYSTEM, "out of memory in xferdepth");
553	>	CHECK(depthbuffer==NULL, SYSTEM, "out of memory in xferdepth");
554		}
555		/* allocate alpha buffer for portals */
556		if (gmPortals)
557	<	cbuf = (GLubyte )malloc(odev.hresodev.vres*
523	<	(4*sizeof(GLubyte)));
557	>	pbuf = (GLubyte )malloc(odev.hresodev.vres*sizeof(GLubyte));
558		else
559	<	cbuf = NULL;
559	>	pbuf = NULL;
560		#ifdef STEREO
561	<	setstereobuf(STEREO_BUFFER_RIGHT);
561	>	pushright();
562		glReadPixels(0, 0, odev.hres, odev.vres,
563		GL_DEPTH_COMPONENT, GL_FLOAT, depthright);
564	<	if (cbuf != NULL)
564	>	if (pbuf != NULL) {
565	>	glClear(GL_COLOR_BUFFER_BIT);
566	>	gmDrawPortals(0xff, -1, -1, -1);
567		glReadPixels(0, 0, odev.hres, odev.vres,
568	<	GL_RGBA, GL_UNSIGNED_BYTE, cbuf);
568	>	GL_RED, GL_UNSIGNED_BYTE, pbuf);
569	>	}
570		for (dbp = depthright + odev.hres*odev.vres; dbp-- > depthright; )
571	<	if (cbuf != NULL && isportal(cbuf+4*(dbp-depthright)))
571	>	if (pbuf != NULL && pbuf[dbp-depthright]&0x40)
572		*dbp = FHUGE;
573		else
574		dbp = mapdepth(dbp);
575		glClear(GL_DEPTH_BUFFER_BIT);
539	–	setstereobuf(STEREO_BUFFER_LEFT);
576		odDepthMap(1, depthright);
577	+	popright();
578		#endif
579		/* read back depth buffer */
580		glReadPixels(0, 0, odev.hres, odev.vres,
581		GL_DEPTH_COMPONENT, GL_FLOAT, depthbuffer);
582	<	if (cbuf != NULL)
582	>	if (pbuf != NULL) {
583	>	glClear(GL_COLOR_BUFFER_BIT); /* find portals */
584	>	gmDrawPortals(0xff, -1, -1, -1);
585		glReadPixels(0, 0, odev.hres, odev.vres,
586	<	GL_RGBA, GL_UNSIGNED_BYTE, cbuf);
586	>	GL_RED, GL_UNSIGNED_BYTE, pbuf);
587	>	#ifdef DEBUG
588	>	glXSwapBuffers(ourdisplay, gwind);
589	>	#endif
590	>	}
591		for (dbp = depthbuffer + odev.hres*odev.vres; dbp-- > depthbuffer; )
592	<	if (cbuf != NULL && isportal(cbuf+4*(dbp-depthbuffer)))
592	>	if (pbuf != NULL && pbuf[dbp-depthbuffer]&0x40)
593		*dbp = FHUGE;
594		else
595		dbp = mapdepth(dbp);
596		glClear(GL_DEPTH_BUFFER_BIT); /* clear system depth buffer */
554	–	if (cbuf != NULL)
555	–	free((char )cbuf); / free our color buffer */
597		odDepthMap(0, depthbuffer); /* transfer depth data */
598	+	if (pbuf != NULL)
599	+	free((void )pbuf); / free our portal buffer */
600		}
601
602
603	<	static
604	<	freedepth() /* free recorded depth buffer */
603	>	static void
604	>	freedepth(void) /* free recorded depth buffer */
605		{
606		if (depthbuffer == NULL)
607		return;
608		#ifdef STEREO
609		odDepthMap(1, NULL);
610	<	free((char *)depthright);
610	>	free((void *)depthright);
611		depthright = NULL;
612		#endif
613		odDepthMap(0, NULL);
614	<	free((char *)depthbuffer);
614	>	free((void *)depthbuffer);
615		depthbuffer = NULL;
616		}
617
618
619		static double
620	<	getdistance(dx, dy, direc) /* distance from fore plane along view ray */
621	<	int dx, dy;
622	<	FVECT direc;
620	>	getdistance( /* distance from fore plane along view ray */
621	>	int dx,
622	>	int dy,
623	>	FVECT direc
624	>	)
625		{
626		GLfloat gldepth;
582	–	GLubyte glcolor[4];
627		double dist;
628
629	<	if (dx<0 \| dx>=odev.hres \| dy<0 \| dy>=odev.vres)
629	>	if ((dx<0) \| (dx>=odev.hres) \| (dy<0) \| (dy>=odev.vres))
630		return(FHUGE);
631		if (depthbuffer != NULL)
632		dist = depthbuffer[dy*odev.hres + dx];
633		else {
634		glReadPixels(dx,dy, 1,1, GL_DEPTH_COMPONENT,
635		GL_FLOAT, &gldepth);
636	<	if (gmPortals) {
637	<	glReadPixels(dx,dy, 1,1, GL_RGBA,
594	<	GL_UNSIGNED_BYTE, glcolor);
595	<	if (isportal(glcolor))
596	<	return(FHUGE);
597	<	}
636	>	if (gldepth <= FTINY)
637	>	return (FHUGE); /* call failed */
638		dist = mapdepth(gldepth);
639		}
640		if (dist >= .99*FHUGE)
#	Line 604 \| Line 644 \| FVECT direc;
644
645
646		#ifdef STEREO
647	<	static
648	<	pushright() /* push on right view & buffer */
647	>	static void
648	>	pushright(void) /* push on right view & buffer */
649		{
650		double d;
651
652		setstereobuf(STEREO_BUFFER_RIGHT);
653	<	if (isperspective > 0) {
653	>	if (viewflags & VWPERSP) {
654		glMatrixMode(GL_MODELVIEW);
655		glPushMatrix();
656		d = -eyesepdist / sqrt(odev.v.hn2);
#	Line 621 \| Line 661 \| *pushright() / push on right view & buffer /*
661		}
662
663
664	<	static
665	<	popright() /* pop off right view & buffer */
664	>	static void
665	>	popright(void) /* pop off right view & buffer */
666		{
667	<	if (isperspective > 0) {
667	>	if (viewflags & VWPERSP) {
668		glMatrixMode(GL_MODELVIEW);
669		glPopMatrix();
670		}
#	Line 634 \| Line 674 \| *popright() / pop off right view & buffer /*
674
675
676		static int
677	<	mytmflags() /* figure out tone mapping flags */
677	>	mytmflags(void) /* figure out tone mapping flags */
678		{
679		extern char *progname;
680		register char cp, tail;
#	Line 658 \| Line 698 \| *mytmflags() / figure out tone mapping flags /*
698		}
699
700
701	<	static
702	<	getevent() /* get next event */
701	>	static void
702	>	getevent(void) /* get next event */
703		{
704		XNextEvent(ourdisplay, levptr(XEvent));
705		switch (levptr(XEvent)->type) {
#	Line 667 \| Line 707 \| *getevent() / get next event /*
707		resizewindow(levptr(XConfigureEvent));
708		break;
709		case UnmapNotify:
710	<	mapped = 0;
710	>	viewflags &= ~VWMAPPED;
711		break;
712		case MapNotify:
713		odRemap(0);
714	<	mapped = 1;
714	>	viewflags \|= VWMAPPED;
715		break;
716		case Expose:
717		fixwindow(levptr(XExposeEvent));
#	Line 689 \| Line 729 \| *getevent() / get next event /*
729		}
730
731
732	<	static
733	<	draw3dline(wp) /* draw 3d line in world coordinates */
734	<	register FVECT wp[2];
732	>	static void
733	>	draw3dline( /* draw 3d line in world coordinates */
734	>	register FVECT wp[2]
735	>	)
736		{
737		glVertex3d(wp[0][0], wp[0][1], wp[0][2]);
738		glVertex3d(wp[1][0], wp[1][1], wp[1][2]);
739		}
740
741
742	<	static
743	<	draw_grids(fore) /* draw holodeck section grids */
744	<	int fore;
742	>	static void
743	>	draw_grids( /* draw holodeck section grids */
744	>	int fore
745	>	)
746		{
747		glPushAttrib(GL_LIGHTING_BIT\|GL_ENABLE_BIT);
748		glDisable(GL_LIGHTING);
749		if (fore)
750	<	glColor3ub(0, 255, 255);
750	>	glColor3ub(4, 250, 250);
751		else
752		glColor3ub(0, 0, 0);
753		glBegin(GL_LINES); /* draw each grid line */
#	Line 716 \| Line 758 \| int fore;
758		}
759
760
761	<	static
762	<	moveview(dx, dy, mov, orb) /* move our view */
763	<	int dx, dy, mov, orb;
761	>	static int
762	>	moveview( /* move our view */
763	>	int dx,
764	>	int dy,
765	>	int mov,
766	>	int orb
767	>	)
768		{
769		VIEW nv;
770		FVECT odir, v1, wip;
771	<	double d, d1;
772	<	register int li;
771	>	double d;
772	>	#ifdef DOBJ
773	>	double d1;
774	>	#endif
775		/* start with old view */
776	<	copystruct(&nv, &odev.v);
776	>	nv = odev.v;
777		/* orient our motion */
778		if (viewray(v1, odir, &odev.v,
779		(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY)
#	Line 748 \| Line 796 \| int dx, dy, mov, orb;
796		VSUM(nv.vp, wip, odir, -1.);
797		spinvector(nv.vdir, nv.vdir, nv.vup, d);
798		} else if (orb) { /* orbit up/down */
799	<	fcross(v1, odir, nv.vup);
800	<	if (normalize(v1) == 0.)
799	>	if (geodesic(odir, odir, nv.vup,
800	>	d=MOVDEGPI/180.orb, GEOD_RAD) == 0.0)
801		return(0);
754	–	spinvector(odir, odir, v1, d=MOVDEGPI/180.orb);
802		VSUM(nv.vp, wip, odir, -1.);
803	<	spinvector(nv.vdir, nv.vdir, v1, d);
803	>	geodesic(nv.vdir, nv.vdir, nv.vup, d, GEOD_RAD);
804		} else if (mov) { /* move forward/backward */
805		d = MOVPCT/100. * mov;
806		VSUM(nv.vp, nv.vp, odir, d);
807		}
808	<	if (!mov ^ !orb && headlocked) { /* restore head height */
808	>	if (!mov ^ !orb && viewflags&VWHEADLOCK) { /* restore height */
809		VSUM(v1, odev.v.vp, nv.vp, -1.);
810		d = DOT(v1, nv.vup);
811		VSUM(nv.vp, nv.vp, odev.v.vup, d);
#	Line 771 \| Line 818 \| int dx, dy, mov, orb;
818		}
819
820
821	<	static
822	<	getframe(ebut) /* get focus frame */
823	<	XButtonPressedEvent *ebut;
821	>	static void
822	>	getframe( /* get focus frame */
823	>	XButtonPressedEvent *ebut
824	>	)
825		{
826		int startx = ebut->x, starty = ebut->y;
827	<	int endx, endy;
828	<
827	>	int endx, endy, midx, midy;
828	>	FVECT odir, v1;
829	>	double d;
830	>	#ifdef DOBJ
831	>	double d1;
832	>	#endif
833	>	/* get mouse drag */
834		XMaskEvent(ourdisplay, ButtonReleaseMask, levptr(XEvent));
835		endx = levptr(XButtonReleasedEvent)->x;
836		endy = levptr(XButtonReleasedEvent)->y;
837	<	if (endx == startx \| endy == starty) {
838	<	XBell(ourdisplay, 0);
837	>	midx = (startx + endx) >> 1;
838	>	midy = (starty + endy) >> 1;
839	>	/* set focus distance */
840	>	if (viewray(v1, odir, &odev.v,
841	>	(midx+.5)/odev.hres, (midy+.5)/odev.vres) < -FTINY)
842		return;
843	<	}
843	>	d = getdistance(midx, midy, odir); /* distance from front plane */
844	>	#ifdef DOBJ
845	>	d1 = dobj_trace(NULL, v1, odir);
846	>	if (d1 < d)
847	>	d = d1;
848	>	#endif
849	>	if (d < .99*FHUGE)
850	>	odev.v.vdist = d + sqrt(dist2(v1, odev.v.vp));
851	>	/* set frame for rendering */
852	>	if ((endx == startx) \| (endy == starty))
853	>	return;
854		if (endx < startx) {register int c = endx; endx = startx; startx = c;}
855		if (endy < starty) {register int c = endy; endy = starty; starty = c;}
856		sprintf(odev_args, "%.3f %.3f %.3f %.3f",
#	Line 794 \| Line 860 \| *XButtonPressedEvent ebut;**
860		}
861
862
863	<	static
864	<	getmove(ebut) /* get view change */
799	<	XButtonPressedEvent *ebut;
863	>	static void
864	>	waitabit(void) /* pause a moment */
865		{
866	+	struct timespec ts;
867	+	ts.tv_sec = 0;
868	+	ts.tv_nsec = 100000000L;
869	+	nanosleep(&ts, NULL);
870	+	}
871	+
872	+
873	+	static void
874	+	getmove( /* get view change */
875	+	XButtonPressedEvent *ebut
876	+	)
877	+	{
878		int movdir = MOVDIR(ebut->button);
879		int movorb = MOVORB(ebut->state);
880		int ndrawn;
#	Line 807 \| Line 884 \| *XButtonPressedEvent ebut;**
884
885		XNoOp(ourdisplay); /* makes sure we're not idle */
886
887	<	viewsteady = 0; /* flag moving view */
888	<	setglpersp(&odev.v); /* start us off in perspective */
887	>	viewflags &= ~VWSTEADY; /* flag moving view */
888	>	setglpersp(); /* start us off in perspective */
889		while (!XCheckMaskEvent(ourdisplay,
890		ButtonReleaseMask, levptr(XEvent))) {
891	+	/* pause so as not to move too fast */
892	+	waitabit();
893		/* get cursor position */
894		if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw,
895		&rootx, &rooty, &wx, &wy, &statemask))
#	Line 828 \| Line 907 \| *XButtonPressedEvent ebut;**
907		#ifdef DOBJ
908		ndrawn += dobj_render();
909		#endif
831	–	if (ndrawn)
832	–	gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP);
910		popright();
911		#endif
912		/* redraw octrees */
#	Line 837 \| Line 914 \| *XButtonPressedEvent ebut;**
914		#ifdef DOBJ
915		ndrawn += dobj_render(); /* redraw objects */
916		#endif
917	<	if (ndrawn)
918	<	gmDrawPortals(PORTRED, PORTGRN, PORTBLU, PORTALP);
842	<	glFlush();
843	<	if (!ndrawn) {
917	>	glXSwapBuffers(ourdisplay, gwind);
918	>	if (!ndrawn)
919		sleep(1); /* for reasonable interaction */
845	–	#ifdef STEREO
846	–	pushright();
847	–	draw_grids(0);
848	–	popright();
849	–	#endif
850	–	draw_grids(0);
851	–	}
920		}
921		if (!(inpresflags & DFL(DC_SETVIEW))) { /* do final motion */
922		movdir = MOVDIR(levptr(XButtonReleasedEvent)->button);
#	Line 856 \| Line 924 \| *XButtonPressedEvent ebut;**
924		wy = levptr(XButtonReleasedEvent)->y;
925		moveview(wx, odev.vres-1-wy, movdir, movorb);
926		}
927	+	viewflags \|= VWSTEADY; /* done goofing around */
928		}
929
930
931	<	static
932	<	setglpersp(vp) /* set perspective view in GL */
864	<	register VIEW *vp;
931	>	static void
932	>	setglpersp(void) /* set perspective view in GL */
933		{
934		double d, xmin, xmax, ymin, ymax;
935		GLfloat vec[4];
#	Line 873 \| Line 941 \| *register VIEW vp;**
941		dev_zmax = 100.;
942		} else {
943		dev_zmin = 0.5*depthlim[0];
944	<	dev_zmax = 1.75*depthlim[1];
944	>	dev_zmax = 1.25*depthlim[1];
945		if (dev_zmin > dev_zmax/5.)
946		dev_zmin = dev_zmax/5.;
947		}
#	Line 881 \| Line 949 \| *register VIEW vp;**
949		dev_zmin = odev.v.vfore;
950		if (odev.v.vaft > FTINY)
951		dev_zmax = odev.v.vaft;
952	<	if (dev_zmin < dev_zmax/100.)
953	<	dev_zmin = dev_zmax/100.;
952	>	if (dev_zmin*500. < dev_zmax)
953	>	dev_zmin = dev_zmax/500.;
954		setzrat();
955		xmax = dev_zmin * tan(PI/180./2. * odev.v.horiz);
956		xmin = -xmax;
#	Line 902 \| Line 970 \| *register VIEW vp;**
970		odev.v.vp[2] + odev.v.vdir[2],
971		odev.v.vup[0], odev.v.vup[1], odev.v.vup[2]);
972		checkglerr("setting perspective view");
905	–	isperspective = 1;
973		vec[0] = vec[1] = vec[2] = 0.; vec[3] = 1.;
974		glLightModelfv(GL_LIGHT_MODEL_AMBIENT, vec);
975		vec[0] = -odev.v.vdir[0];
#	Line 918 \| Line 985 \| *register VIEW vp;**
985		glEnable(GL_LIGHT0);
986		glEnable(GL_LIGHTING); /* light our GL objects */
987		glShadeModel(GL_SMOOTH);
988	+	viewflags &= ~VWORTHO;
989	+	viewflags \|= VWPERSP;
990		}
991
992
993	<	static
994	<	setglortho() /* set up orthographic view for cone drawing */
993	>	static void
994	>	setglortho(void) /* set up orthographic view for cone drawing */
995		{
996	+	glDrawBuffer(GL_FRONT); /* use single-buffer mode */
997		/* set view matrix */
998		glMatrixMode(GL_PROJECTION);
999		glLoadIdentity();
1000		glOrtho(0., (double)odev.hres, 0., (double)odev.vres,
1001		0.001OMAXDEPTH, 1.001(-OMAXDEPTH));
1002		checkglerr("setting orthographic view");
933	–	isperspective = 0;
1003		glDisable(GL_LIGHTING); /* cones are constant color */
1004		glShadeModel(GL_FLAT);
1005	+	viewflags &= ~VWPERSP;
1006	+	viewflags \|= VWORTHO;
1007		}
1008
1009
1010	<	static
1011	<	wipeclean() /* prepare for redraw */
1010	>	static void
1011	>	wipeclean(void) /* prepare for redraw */
1012		{
1013	<	/* clear depth buffer */
1013	>	glDrawBuffer(GL_BACK); /* use double-buffer mode */
1014	>	glReadBuffer(GL_BACK);
1015	>	/* clear buffers */
1016		#ifdef STEREO
1017		setstereobuf(STEREO_BUFFER_RIGHT);
1018	<	glClear(GL_DEPTH_BUFFER_BIT);
1018	>	glClear(GL_DEPTH_BUFFER_BIT\|GL_COLOR_BUFFER_BIT);
1019		setstereobuf(STEREO_BUFFER_LEFT);
1020		#endif
1021	<	glClear(GL_DEPTH_BUFFER_BIT);
949	<	if (viewsteady) /* clear samples if steady */
950	<	odClean();
1021	>	glClear(GL_DEPTH_BUFFER_BIT\|GL_COLOR_BUFFER_BIT);
1022		freedepth();
1023	<	setglpersp(&odev.v); /* reset view & clipping planes */
1023	>	if ((viewflags&(VWCHANGE\|VWSTEADY)) ==
1024	>	(VWCHANGE\|VWSTEADY)) { /* clear samples if new */
1025	>	odClean();
1026	>	viewflags &= ~VWCHANGE; /* change noted */
1027	>	} else if (viewflags & VWSTEADY)
1028	>	odRedrawAll();
1029	>	setglpersp(); /* reset view & clipping planes */
1030		}
1031
1032
1033	<	static
1034	<	getkey(ekey) /* get input key */
1035	<	register XKeyPressedEvent *ekey;
1033	>	static void
1034	>	getkey( /* get input key */
1035	>	register XKeyPressedEvent *ekey
1036	>	)
1037		{
1038		Window rootw, childw;
1039		int rootx, rooty, wx, wy;
#	Line 968 \| Line 1046 \| *register XKeyPressedEvent ekey;**
1046		return;
1047		switch (buf[0]) {
1048		case 'h': /* turn on height motion lock */
1049	<	headlocked = 1;
1049	>	viewflags \|= VWHEADLOCK;
1050		return;
1051		case 'H': /* turn off height motion lock */
1052	<	headlocked = 0;
1052	>	viewflags &= ~VWHEADLOCK;
1053		return;
1054		case 'l': /* retrieve last view */
1055		inpresflags \|= DFL(DC_LASTVIEW);
#	Line 999 \| Line 1077 \| *register XKeyPressedEvent ekey;**
1077		inpresflags \|= DFL(DC_RESUME);
1078		return;
1079		case CTRL('R'): /* redraw screen */
1080	<	odRemap(0);
1081	<	glClear(GL_COLOR_BUFFER_BIT\|GL_DEPTH_BUFFER_BIT);
1080	>	odRemap(0); /* new tone mapping */
1081	>	glClear(GL_DEPTH_BUFFER_BIT);
1082		#ifdef STEREO
1083		setstereobuf(STEREO_BUFFER_RIGHT);
1084	<	glClear(GL_COLOR_BUFFER_BIT\|GL_DEPTH_BUFFER_BIT);
1084	>	glClear(GL_DEPTH_BUFFER_BIT);
1085		setstereobuf(STEREO_BUFFER_LEFT);
1086		#endif
1087		return;
1088		case CTRL('L'): /* refresh from server */
1089		if (inpresflags & DFL(DC_REDRAW))
1090	<	return;
1090	>	return; /* already called */
1091		XRaiseWindow(ourdisplay, gwind);
1092	<	XFlush(ourdisplay);
1093	<	sleep(1);
1094	<	wipeclean(); /* fresh display */
1095	<	odRemap(1); /* fresh tone mapping */
1018	<	dev_flush(); /* draw octrees */
1092	>	XFlush(ourdisplay); /* raise up window */
1093	>	sleep(1); /* wait for restacking */
1094	>	dev_clear(); /* clear buffer and samples */
1095	>	odRemap(1); /* start fresh histogram */
1096		inpresflags \|= DFL(DC_REDRAW); /* resend values from server */
1020	–	rayqleft = 0; /* hold off update */
1097		return;
1098		case 'K': /* kill rtrace process(es) */
1099		inpresflags \|= DFL(DC_KILL);
#	Line 1038 \| Line 1114 \| *register XKeyPressedEvent ekey;**
1114		}
1115
1116
1117	<	static
1118	<	fixwindow(eexp) /* repair damage to window */
1119	<	register XExposeEvent *eexp;
1117	>	static void
1118	>	fixwindow( /* repair damage to window */
1119	>	register XExposeEvent *eexp
1120	>	)
1121		{
1122		int xmin, ymin, xmax, ymax;
1123
1124	<	if (odev.hres == 0 \| odev.vres == 0) { /* first exposure */
1124	>	if ((odev.hres == 0) \| (odev.vres == 0)) { /* first exposure */
1125		resizewindow((XConfigureEvent *)eexp);
1126		return;
1127		}
1128		xmin = eexp->x; xmax = eexp->x + eexp->width;
1129		ymin = odev.vres - eexp->y - eexp->height; ymax = odev.vres - eexp->y;
1130	+
1131	+	if (xmin <= 0 && xmax >= odev.hres-1 &&
1132	+	ymin <= 0 && ymax >= odev.vres) {
1133	+	DCHECK(eexp->count, WARNING, "multiple clear in fixwindow");
1134	+	wipeclean(); /* make sure we're go */
1135	+	return;
1136	+	}
1137		/* clear portion of depth */
1138		glPushAttrib(GL_DEPTH_BUFFER_BIT\|GL_COLOR_BUFFER_BIT);
1139		glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
#	Line 1076 \| Line 1160 \| *register XExposeEvent eexp;**
1160		}
1161
1162
1163	<	static
1164	<	resizewindow(ersz) /* resize window */
1165	<	register XConfigureEvent *ersz;
1163	>	static void
1164	>	resizewindow( /* resize window */
1165	>	register XConfigureEvent *ersz
1166	>	)
1167		{
1168		glViewport(0, 0, ersz->width, ersz->height);
1169
#	Line 1092 \| Line 1177 \| *register XConfigureEvent ersz;**
1177		odev.v.vert = 2.180./PI atan(0.5/VIEWDISTpheightodev.vres);
1178
1179		inpresflags \|= DFL(DC_SETVIEW);
1180	+	viewflags \|= VWCHANGE;
1181		}

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Comparing ray/src/hd/rhd_ogl.c (file contents): Revision 3.3 by gwlarson, Mon Dec 21 11:42:38 1998 UTC vs. Revision 3.31 by greg, Thu Sep 6 00:07:43 2012 UTC

Diff Legend

Comparing ray/src/hd/rhd_ogl.c (file contents):
Revision 3.3 by gwlarson, Mon Dec 21 11:42:38 1998 UTC vs.
Revision 3.31 by greg, Thu Sep 6 00:07:43 2012 UTC