1 |
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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
2 |
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#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ SGI"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
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#endif |
6 |
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|
4 |
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/* |
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* OpenGL driver for holodeck display. |
6 |
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* Based on GLX driver using T-mesh. |
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#include "standard.h" |
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|
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#include <sys/types.h> |
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#include <GL/glx.h> |
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#include <GL/glu.h> |
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#ifdef STEREO |
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#include <X11/extensions/SGIStereo.h> |
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#endif |
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#include <time.h> |
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|
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#include "rhd_odraw.h" |
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#ifdef DOBJ |
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#include "x11icon.h" |
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|
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#ifndef RAYQLEN |
37 |
< |
#define RAYQLEN 50000 /* max. rays to queue before flush */ |
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> |
#define RAYQLEN 0 /* max. rays to queue before flush */ |
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#endif |
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|
40 |
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/* values other than 0 or 255 do not map reliably */ |
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#ifndef PORTALP |
45 |
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#define PORTRED 0 /* -1, 0 or 255 */ |
46 |
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#define PORTGRN -1 /* -1, 0 or 255 */ |
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#define PORTBLU 255 /* -1, 0 or 255 */ |
48 |
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#define PORTALP -1 /* -1 or 255 */ |
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#ifndef MINWIDTH |
40 |
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#define MINWIDTH 480 /* minimum graphics window width */ |
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#define MINHEIGHT 400 /* minimum graphics window height */ |
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#endif |
43 |
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#define isportal(c) ((PORTRED<0 || (c)[0]==PORTRED) && \ |
44 |
< |
(PORTGRN<0 || (c)[1]==PORTGRN) && \ |
45 |
< |
(PORTBLU<0 || (c)[2]==PORTBLU) && \ |
46 |
< |
(PORTALP<0 || (c)[3]==PORTALP)) |
47 |
< |
#define doportals() if (gmPortals) \ |
48 |
< |
gmDrawPortals(PORTRED,PORTGRN,PORTBLU,PORTALP); else |
43 |
> |
#ifndef VIEWDIST |
44 |
> |
#define VIEWDIST 356 /* assumed viewing distance (mm) */ |
45 |
> |
#endif |
46 |
> |
#ifndef BORWIDTH |
47 |
> |
#define BORWIDTH 5 /* border width */ |
48 |
> |
#endif |
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|
50 |
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#ifndef FEQ |
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#define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY) |
67 |
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#define MOVDEG (-5) /* degrees to orbit CW/down /frame */ |
68 |
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#define MOVORB(s) ((s)&ShiftMask ? 1 : (s)&ControlMask ? -1 : 0) |
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|
77 |
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#define MINWIDTH 480 /* minimum graphics window width */ |
78 |
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#define MINHEIGHT 400 /* minimum graphics window height */ |
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|
80 |
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#define VIEWDIST 356 /* assumed viewing distance (mm) */ |
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|
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#define BORWIDTH 5 /* border width */ |
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|
70 |
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#define setstereobuf(bid) (glXWaitGL(), \ |
71 |
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XSGISetStereoBuffer(ourdisplay, gwind, bid), \ |
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glXWaitX()) |
132 |
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{ |
133 |
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extern char *getenv(); |
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static RGBPRIMS myprims = STDPRIMS; |
149 |
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#if (PORTALP<0) |
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static int atlBest[] = {GLX_RGBA, GLX_DOUBLEBUFFER, |
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GLX_RED_SIZE,8, GLX_GREEN_SIZE,8, |
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GLX_BLUE_SIZE,8, GLX_DEPTH_SIZE,15, None}; |
138 |
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static int atlOK[] = {GLX_RGBA, GLX_DOUBLEBUFFER, |
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GLX_RED_SIZE,4, GLX_GREEN_SIZE,4, |
140 |
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GLX_BLUE_SIZE,4, GLX_DEPTH_SIZE,15, None}; |
156 |
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#else |
157 |
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static int atlBest[] = {GLX_RGBA, GLX_DOUBLEBUFFER, |
158 |
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GLX_RED_SIZE,8, GLX_GREEN_SIZE,8, |
159 |
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GLX_BLUE_SIZE,8, GLX_ALPHA_SIZE,1, |
160 |
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GLX_DEPTH_SIZE,15, None}; |
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static int atlOK[] = {GLX_RGBA, GLX_DOUBLEBUFFER, |
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GLX_RED_SIZE,5, GLX_GREEN_SIZE,5, |
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GLX_BLUE_SIZE,5, GLX_ALPHA_SIZE,1, |
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GLX_DEPTH_SIZE,15, None}; |
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#endif |
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char *ev; |
142 |
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double gamval = GAMMA; |
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RGBPRIMP dpri = stdprims; |
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glXMakeCurrent(ourdisplay, gwind, gctx); |
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glEnable(GL_DEPTH_TEST); |
228 |
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glDepthFunc(GL_LEQUAL); |
229 |
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glEnable(GL_DITHER); |
229 |
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glClearColor(0, 0, 0, 0); |
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glFrontFace(GL_CCW); |
231 |
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glDisable(GL_CULL_FACE); |
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glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); |
233 |
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
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glPixelStorei(GL_PACK_ALIGNMENT, 1); |
235 |
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1); |
236 |
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/* figure out sensible view */ |
237 |
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pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) / |
238 |
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DisplayWidth(ourdisplay, ourscreen); |
243 |
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setstereobuf(STEREO_BUFFER_LEFT); |
244 |
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#endif |
245 |
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checkglerr("setting rendering parameters"); |
246 |
< |
copystruct(&odev.v, &stdview); |
246 |
> |
odev.v = stdview; |
247 |
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odev.v.type = VT_PER; |
248 |
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viewflags = VWSTEADY; /* view starts static */ |
249 |
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/* map the window */ |
250 |
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XMapWindow(ourdisplay, gwind); |
251 |
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dev_input(); /* sets size and view angles */ |
252 |
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if (!odInit(DisplayWidth(ourdisplay,ourscreen) * |
253 |
< |
DisplayHeight(ourdisplay,ourscreen) / 4)) |
253 |
> |
DisplayHeight(ourdisplay,ourscreen) / 3)) |
254 |
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error(SYSTEM, "insufficient memory for value storage"); |
255 |
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odev.name = id; |
256 |
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odev.firstuse = 1; /* can't recycle samples */ |
282 |
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|
283 |
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dev_clear() /* clear our representation */ |
284 |
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{ |
285 |
< |
wipeclean(); |
285 |
> |
viewflags |= VWCHANGE; /* pretend our view has changed */ |
286 |
> |
wipeclean(); /* clean off display and samples */ |
287 |
> |
dev_flush(); /* redraw geometry & get depth */ |
288 |
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rayqleft = 0; /* hold off update */ |
289 |
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} |
290 |
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330 |
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XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres); |
331 |
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dev_input(); /* get resize event */ |
332 |
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} |
333 |
< |
copystruct(&odev.v, nv); /* setview() already called */ |
355 |
< |
#ifdef STEREO |
356 |
< |
copystruct(&vwright, nv); |
357 |
< |
d = eyesepdist / sqrt(nv->hn2); |
358 |
< |
VSUM(vwright.vp, nv->vp, nv->hvec, d); |
359 |
< |
/* setview(&vwright); -- Unnecessary */ |
360 |
< |
#endif |
333 |
> |
odev.v = *nv; /* setview() already called */ |
334 |
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viewflags |= VWCHANGE; |
335 |
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} |
336 |
+ |
#ifdef STEREO |
337 |
+ |
vwright = *nv; |
338 |
+ |
d = eyesepdist / sqrt(nv->hn2); |
339 |
+ |
VSUM(vwright.vp, nv->vp, nv->hvec, d); |
340 |
+ |
/* setview(&vwright); -- Unnecessary */ |
341 |
+ |
#endif |
342 |
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wipeclean(); |
343 |
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return(1); |
344 |
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} |
347 |
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dev_section(gfn, pfn) /* add octree for geometry rendering */ |
348 |
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char *gfn, *pfn; |
349 |
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{ |
371 |
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extern char *index(); |
350 |
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char *cp; |
351 |
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|
352 |
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if (gfn == NULL) { |
372 |
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char *cmd, *args; |
373 |
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{ |
374 |
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#ifdef DOBJ |
375 |
< |
if (dobj_command(cmd, args) >= 0) |
375 |
> |
int vischange; |
376 |
> |
|
377 |
> |
if ((vischange = dobj_command(cmd, args)) >= 0) { |
378 |
> |
if (vischange) { |
379 |
> |
imm_mode = beam_sync(1) > 0; |
380 |
> |
dev_clear(); |
381 |
> |
} |
382 |
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return; |
383 |
+ |
} |
384 |
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#endif |
385 |
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sprintf(errmsg, "%s: unknown command", cmd); |
386 |
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error(COMMAND, errmsg); |
447 |
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#ifdef DOBJ |
448 |
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ndrawn += dobj_render(); |
449 |
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#endif |
465 |
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if (ndrawn) |
466 |
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doportals(); |
450 |
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checkglerr("rendering right eye"); |
451 |
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popright(); /* draw left eye */ |
452 |
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#endif |
454 |
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#ifdef DOBJ |
455 |
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ndrawn += dobj_render(); |
456 |
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#endif |
474 |
– |
if (ndrawn) |
475 |
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doportals(); |
457 |
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glXSwapBuffers(ourdisplay, gwind); |
458 |
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checkglerr("rendering base view"); |
459 |
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} |
499 |
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xferdepth() /* load and clear depth buffer */ |
500 |
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{ |
501 |
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register GLfloat *dbp; |
502 |
< |
register GLubyte *cbuf; |
502 |
> |
register GLubyte *pbuf; |
503 |
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|
504 |
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if (depthbuffer == NULL) { /* allocate private depth buffer */ |
505 |
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#ifdef STEREO |
512 |
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} |
513 |
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/* allocate alpha buffer for portals */ |
514 |
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if (gmPortals) |
515 |
< |
cbuf = (GLubyte *)malloc(odev.hres*odev.vres * |
535 |
< |
(4*sizeof(GLubyte))); |
515 |
> |
pbuf = (GLubyte *)malloc(odev.hres*odev.vres*sizeof(GLubyte)); |
516 |
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else |
517 |
< |
cbuf = NULL; |
517 |
> |
pbuf = NULL; |
518 |
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#ifdef STEREO |
519 |
< |
setstereobuf(STEREO_BUFFER_RIGHT); |
519 |
> |
pushright(); |
520 |
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glReadPixels(0, 0, odev.hres, odev.vres, |
521 |
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GL_DEPTH_COMPONENT, GL_FLOAT, depthright); |
522 |
< |
if (cbuf != NULL) |
522 |
> |
if (pbuf != NULL) { |
523 |
> |
glClear(GL_COLOR_BUFFER_BIT); |
524 |
> |
gmDrawPortals(0xff, -1, -1, -1); |
525 |
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glReadPixels(0, 0, odev.hres, odev.vres, |
526 |
< |
GL_RGBA, GL_UNSIGNED_BYTE, cbuf); |
526 |
> |
GL_RED, GL_UNSIGNED_BYTE, pbuf); |
527 |
> |
} |
528 |
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for (dbp = depthright + odev.hres*odev.vres; dbp-- > depthright; ) |
529 |
< |
if (cbuf != NULL && isportal(cbuf+4*(dbp-depthright))) |
529 |
> |
if (pbuf != NULL && pbuf[dbp-depthright]&0x40) |
530 |
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*dbp = FHUGE; |
531 |
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else |
532 |
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*dbp = mapdepth(*dbp); |
533 |
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glClear(GL_DEPTH_BUFFER_BIT); |
551 |
– |
setstereobuf(STEREO_BUFFER_LEFT); |
534 |
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odDepthMap(1, depthright); |
535 |
+ |
popright(); |
536 |
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#endif |
537 |
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/* read back depth buffer */ |
538 |
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glReadPixels(0, 0, odev.hres, odev.vres, |
539 |
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GL_DEPTH_COMPONENT, GL_FLOAT, depthbuffer); |
540 |
< |
if (cbuf != NULL) |
540 |
> |
if (pbuf != NULL) { |
541 |
> |
glClear(GL_COLOR_BUFFER_BIT); /* find portals */ |
542 |
> |
gmDrawPortals(0xff, -1, -1, -1); |
543 |
|
glReadPixels(0, 0, odev.hres, odev.vres, |
544 |
< |
GL_RGBA, GL_UNSIGNED_BYTE, cbuf); |
544 |
> |
GL_RED, GL_UNSIGNED_BYTE, pbuf); |
545 |
> |
#ifdef DEBUG |
546 |
> |
glXSwapBuffers(ourdisplay, gwind); |
547 |
> |
#endif |
548 |
> |
} |
549 |
|
for (dbp = depthbuffer + odev.hres*odev.vres; dbp-- > depthbuffer; ) |
550 |
< |
if (cbuf != NULL && isportal(cbuf+4*(dbp-depthbuffer))) |
550 |
> |
if (pbuf != NULL && pbuf[dbp-depthbuffer]&0x40) |
551 |
|
*dbp = FHUGE; |
552 |
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else |
553 |
|
*dbp = mapdepth(*dbp); |
554 |
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glClear(GL_DEPTH_BUFFER_BIT); /* clear system depth buffer */ |
566 |
– |
if (cbuf != NULL) |
567 |
– |
free((char *)cbuf); /* free our color buffer */ |
555 |
|
odDepthMap(0, depthbuffer); /* transfer depth data */ |
556 |
+ |
if (pbuf != NULL) |
557 |
+ |
free((void *)pbuf); /* free our portal buffer */ |
558 |
|
} |
559 |
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|
560 |
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|
565 |
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return; |
566 |
|
#ifdef STEREO |
567 |
|
odDepthMap(1, NULL); |
568 |
< |
free((char *)depthright); |
568 |
> |
free((void *)depthright); |
569 |
|
depthright = NULL; |
570 |
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#endif |
571 |
|
odDepthMap(0, NULL); |
572 |
< |
free((char *)depthbuffer); |
572 |
> |
free((void *)depthbuffer); |
573 |
|
depthbuffer = NULL; |
574 |
|
} |
575 |
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|
580 |
|
FVECT direc; |
581 |
|
{ |
582 |
|
GLfloat gldepth; |
594 |
– |
GLubyte glcolor[4]; |
583 |
|
double dist; |
584 |
|
|
585 |
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if (dx<0 | dx>=odev.hres | dy<0 | dy>=odev.vres) |
589 |
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else { |
590 |
|
glReadPixels(dx,dy, 1,1, GL_DEPTH_COMPONENT, |
591 |
|
GL_FLOAT, &gldepth); |
592 |
< |
if (gmPortals) { |
593 |
< |
glReadPixels(dx,dy, 1,1, GL_RGBA, |
606 |
< |
GL_UNSIGNED_BYTE, glcolor); |
607 |
< |
if (isportal(glcolor)) |
608 |
< |
return(FHUGE); |
609 |
< |
} |
592 |
> |
if (gldepth <= FTINY) |
593 |
> |
return (FHUGE); /* call failed */ |
594 |
|
dist = mapdepth(gldepth); |
595 |
|
} |
596 |
|
if (dist >= .99*FHUGE) |
721 |
|
double d, d1; |
722 |
|
register int li; |
723 |
|
/* start with old view */ |
724 |
< |
copystruct(&nv, &odev.v); |
724 |
> |
nv = odev.v; |
725 |
|
/* orient our motion */ |
726 |
|
if (viewray(v1, odir, &odev.v, |
727 |
|
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY) |
791 |
|
|
792 |
|
|
793 |
|
static |
794 |
+ |
waitabit() /* pause a moment */ |
795 |
+ |
{ |
796 |
+ |
struct timespec ts; |
797 |
+ |
ts.tv_sec = 0; |
798 |
+ |
ts.tv_nsec = 100000000L; |
799 |
+ |
nanosleep(&ts, NULL); |
800 |
+ |
} |
801 |
+ |
|
802 |
+ |
|
803 |
+ |
static |
804 |
|
getmove(ebut) /* get view change */ |
805 |
|
XButtonPressedEvent *ebut; |
806 |
|
{ |
814 |
|
XNoOp(ourdisplay); /* makes sure we're not idle */ |
815 |
|
|
816 |
|
viewflags &= ~VWSTEADY; /* flag moving view */ |
817 |
< |
setglpersp(&odev.v); /* start us off in perspective */ |
817 |
> |
setglpersp(); /* start us off in perspective */ |
818 |
|
while (!XCheckMaskEvent(ourdisplay, |
819 |
|
ButtonReleaseMask, levptr(XEvent))) { |
820 |
+ |
/* pause so as not to move too fast */ |
821 |
+ |
waitabit(); |
822 |
|
/* get cursor position */ |
823 |
|
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
824 |
|
&rootx, &rooty, &wx, &wy, &statemask)) |
836 |
|
#ifdef DOBJ |
837 |
|
ndrawn += dobj_render(); |
838 |
|
#endif |
843 |
– |
if (ndrawn) |
844 |
– |
doportals(); |
839 |
|
popright(); |
840 |
|
#endif |
841 |
|
/* redraw octrees */ |
843 |
|
#ifdef DOBJ |
844 |
|
ndrawn += dobj_render(); /* redraw objects */ |
845 |
|
#endif |
852 |
– |
if (ndrawn) |
853 |
– |
doportals(); |
846 |
|
glXSwapBuffers(ourdisplay, gwind); |
847 |
|
if (!ndrawn) |
848 |
|
sleep(1); /* for reasonable interaction */ |
858 |
|
|
859 |
|
|
860 |
|
static |
861 |
< |
setglpersp(vp) /* set perspective view in GL */ |
870 |
< |
register VIEW *vp; |
861 |
> |
setglpersp() /* set perspective view in GL */ |
862 |
|
{ |
863 |
|
double d, xmin, xmax, ymin, ymax; |
864 |
|
GLfloat vec[4]; |
870 |
|
dev_zmax = 100.; |
871 |
|
} else { |
872 |
|
dev_zmin = 0.5*depthlim[0]; |
873 |
< |
dev_zmax = 1.75*depthlim[1]; |
873 |
> |
dev_zmax = 1.25*depthlim[1]; |
874 |
|
if (dev_zmin > dev_zmax/5.) |
875 |
|
dev_zmin = dev_zmax/5.; |
876 |
|
} |
878 |
|
dev_zmin = odev.v.vfore; |
879 |
|
if (odev.v.vaft > FTINY) |
880 |
|
dev_zmax = odev.v.vaft; |
881 |
< |
if (dev_zmin < dev_zmax/100.) |
882 |
< |
dev_zmin = dev_zmax/100.; |
881 |
> |
if (dev_zmin*500. < dev_zmax) |
882 |
> |
dev_zmin = dev_zmax/500.; |
883 |
|
setzrat(); |
884 |
|
xmax = dev_zmin * tan(PI/180./2. * odev.v.horiz); |
885 |
|
xmin = -xmax; |
940 |
|
wipeclean() /* prepare for redraw */ |
941 |
|
{ |
942 |
|
glDrawBuffer(GL_BACK); /* use double-buffer mode */ |
943 |
< |
glReadBuffer(GL_FRONT); /* read back visible contents */ |
953 |
< |
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); |
943 |
> |
glReadBuffer(GL_BACK); |
944 |
|
/* clear buffers */ |
945 |
|
#ifdef STEREO |
946 |
|
setstereobuf(STEREO_BUFFER_RIGHT); |
948 |
|
setstereobuf(STEREO_BUFFER_LEFT); |
949 |
|
#endif |
950 |
|
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
961 |
– |
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE); |
951 |
|
freedepth(); |
952 |
|
if ((viewflags&(VWCHANGE|VWSTEADY)) == |
953 |
|
(VWCHANGE|VWSTEADY)) { /* clear samples if new */ |
954 |
|
odClean(); |
955 |
|
viewflags &= ~VWCHANGE; /* change noted */ |
956 |
< |
} |
957 |
< |
setglpersp(&odev.v); /* reset view & clipping planes */ |
956 |
> |
} else if (viewflags & VWSTEADY) |
957 |
> |
odRedrawAll(); |
958 |
> |
setglpersp(); /* reset view & clipping planes */ |
959 |
|
} |
960 |
|
|
961 |
|
|
1005 |
|
inpresflags |= DFL(DC_RESUME); |
1006 |
|
return; |
1007 |
|
case CTRL('R'): /* redraw screen */ |
1008 |
< |
odRemap(0); |
1008 |
> |
odRemap(0); /* new tone mapping */ |
1009 |
|
glClear(GL_DEPTH_BUFFER_BIT); |
1010 |
|
#ifdef STEREO |
1011 |
|
setstereobuf(STEREO_BUFFER_RIGHT); |
1015 |
|
return; |
1016 |
|
case CTRL('L'): /* refresh from server */ |
1017 |
|
if (inpresflags & DFL(DC_REDRAW)) |
1018 |
< |
return; |
1018 |
> |
return; /* already called */ |
1019 |
|
XRaiseWindow(ourdisplay, gwind); |
1020 |
< |
XFlush(ourdisplay); |
1021 |
< |
sleep(1); |
1022 |
< |
wipeclean(); /* fresh display */ |
1023 |
< |
odRemap(1); /* fresh tone mapping */ |
1034 |
< |
dev_flush(); /* draw octrees */ |
1020 |
> |
XFlush(ourdisplay); /* raise up window */ |
1021 |
> |
sleep(1); /* wait for restacking */ |
1022 |
> |
dev_clear(); /* clear buffer and samples */ |
1023 |
> |
odRemap(1); /* start fresh histogram */ |
1024 |
|
inpresflags |= DFL(DC_REDRAW); /* resend values from server */ |
1036 |
– |
rayqleft = 0; /* hold off update */ |
1025 |
|
return; |
1026 |
|
case 'K': /* kill rtrace process(es) */ |
1027 |
|
inpresflags |= DFL(DC_KILL); |
1054 |
|
} |
1055 |
|
xmin = eexp->x; xmax = eexp->x + eexp->width; |
1056 |
|
ymin = odev.vres - eexp->y - eexp->height; ymax = odev.vres - eexp->y; |
1057 |
+ |
|
1058 |
+ |
if (xmin <= 0 && xmax >= odev.hres-1 && |
1059 |
+ |
ymin <= 0 && ymax >= odev.vres) { |
1060 |
+ |
DCHECK(eexp->count, WARNING, "multiple clear in fixwindow"); |
1061 |
+ |
wipeclean(); /* make sure we're go */ |
1062 |
+ |
return; |
1063 |
+ |
} |
1064 |
|
/* clear portion of depth */ |
1065 |
|
glPushAttrib(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
1066 |
|
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); |