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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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/* Copyright (c) 1999 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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#include "standard.h" |
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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 "x11icon.h" |
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|
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#ifndef RAYQLEN |
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#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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#ifndef MINWIDTH |
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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 |
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#ifndef VIEWDIST |
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#define VIEWDIST 356 /* assumed viewing distance (mm) */ |
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#endif |
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#ifndef BORWIDTH |
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#define BORWIDTH 5 /* border width */ |
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#endif |
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|
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#ifndef FEQ |
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#define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY) |
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#define MOVDEG (-5) /* degrees to orbit CW/down /frame */ |
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#define MOVORB(s) ((s)&ShiftMask ? 1 : (s)&ControlMask ? -1 : 0) |
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|
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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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|
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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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|
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#define setstereobuf(bid) (glXWaitGL(), \ |
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XSGISetStereoBuffer(ourdisplay, gwind, bid), \ |
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glXWaitX()) |
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glDisable(GL_CULL_FACE); |
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glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); |
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
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glPixelStorei(GL_PACK_ALIGNMENT, 1); |
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1); |
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/* figure out sensible view */ |
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pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) / |
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DisplayWidth(ourdisplay, ourscreen); |
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XMapWindow(ourdisplay, gwind); |
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dev_input(); /* sets size and view angles */ |
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if (!odInit(DisplayWidth(ourdisplay,ourscreen) * |
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DisplayHeight(ourdisplay,ourscreen) / 4)) |
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DisplayHeight(ourdisplay,ourscreen) / 3)) |
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error(SYSTEM, "insufficient memory for value storage"); |
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odev.name = id; |
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odev.firstuse = 1; /* can't recycle samples */ |
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dev_clear() /* clear our representation */ |
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{ |
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wipeclean(); |
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viewflags |= VWCHANGE; /* pretend our view has changed */ |
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wipeclean(); /* clean off display and samples */ |
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dev_flush(); /* redraw geometry & get depth */ |
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rayqleft = 0; /* hold off update */ |
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} |
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dev_input(); /* get resize event */ |
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} |
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copystruct(&odev.v, nv); /* setview() already called */ |
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#ifdef STEREO |
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copystruct(&vwright, nv); |
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d = eyesepdist / sqrt(nv->hn2); |
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VSUM(vwright.vp, nv->vp, nv->hvec, d); |
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/* setview(&vwright); -- Unnecessary */ |
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#endif |
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viewflags |= VWCHANGE; |
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} |
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#ifdef STEREO |
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copystruct(&vwright, nv); |
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d = eyesepdist / sqrt(nv->hn2); |
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VSUM(vwright.vp, nv->vp, nv->hvec, d); |
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/* setview(&vwright); -- Unnecessary */ |
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#endif |
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wipeclean(); |
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return(1); |
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} |
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char *cmd, *args; |
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{ |
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#ifdef DOBJ |
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if (dobj_command(cmd, args) >= 0) |
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int vischange; |
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|
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if ((vischange = dobj_command(cmd, args)) >= 0) { |
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if (vischange) { |
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imm_mode = beam_sync(1) > 0; |
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dev_clear(); |
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} |
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return; |
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} |
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#endif |
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sprintf(errmsg, "%s: unknown command", cmd); |
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error(COMMAND, errmsg); |
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} |
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/* allocate alpha buffer for portals */ |
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if (gmPortals) |
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pbuf = (GLubyte *)malloc(odev.hres*odev.vres * |
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(4*sizeof(GLubyte))); |
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pbuf = (GLubyte *)malloc(odev.hres*odev.vres*sizeof(GLubyte)); |
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else |
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pbuf = NULL; |
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#ifdef STEREO |
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setstereobuf(STEREO_BUFFER_RIGHT); |
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pushright(); |
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glReadPixels(0, 0, odev.hres, odev.vres, |
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GL_DEPTH_COMPONENT, GL_FLOAT, depthright); |
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if (pbuf != NULL) { |
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glClear(GL_COLOR_BUFFER_BIT); |
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gmDrawPortals(0xff, -1, -1, -1); |
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glReadPixels(0, 0, odev.hres, odev.vres, |
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GL_RGBA, GL_UNSIGNED_BYTE, pbuf); |
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GL_RED, GL_UNSIGNED_BYTE, pbuf); |
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} |
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for (dbp = depthright + odev.hres*odev.vres; dbp-- > depthright; ) |
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if (pbuf != NULL && pbuf[4*(dbp-depthright)]&0x40) |
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if (pbuf != NULL && pbuf[dbp-depthright]&0x40) |
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*dbp = FHUGE; |
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else |
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*dbp = mapdepth(*dbp); |
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glClear(GL_DEPTH_BUFFER_BIT); |
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setstereobuf(STEREO_BUFFER_LEFT); |
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odDepthMap(1, depthright); |
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popright(); |
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#endif |
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/* read back depth buffer */ |
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glReadPixels(0, 0, odev.hres, odev.vres, |
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glClear(GL_COLOR_BUFFER_BIT); /* find portals */ |
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gmDrawPortals(0xff, -1, -1, -1); |
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glReadPixels(0, 0, odev.hres, odev.vres, |
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GL_RGBA, GL_UNSIGNED_BYTE, pbuf); |
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GL_RED, GL_UNSIGNED_BYTE, pbuf); |
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#ifdef DEBUG |
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glXSwapBuffers(ourdisplay, gwind); |
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#endif |
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} |
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for (dbp = depthbuffer + odev.hres*odev.vres; dbp-- > depthbuffer; ) |
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if (pbuf != NULL && pbuf[4*(dbp-depthbuffer)]&0x40) |
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if (pbuf != NULL && pbuf[dbp-depthbuffer]&0x40) |
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*dbp = FHUGE; |
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else |
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*dbp = mapdepth(*dbp); |
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XNoOp(ourdisplay); /* makes sure we're not idle */ |
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viewflags &= ~VWSTEADY; /* flag moving view */ |
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setglpersp(&odev.v); /* start us off in perspective */ |
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setglpersp(); /* start us off in perspective */ |
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while (!XCheckMaskEvent(ourdisplay, |
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ButtonReleaseMask, levptr(XEvent))) { |
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/* get cursor position */ |
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static |
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setglpersp(vp) /* set perspective view in GL */ |
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register VIEW *vp; |
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setglpersp() /* set perspective view in GL */ |
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{ |
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double d, xmin, xmax, ymin, ymax; |
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GLfloat vec[4]; |
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dev_zmax = 100.; |
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} else { |
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dev_zmin = 0.5*depthlim[0]; |
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dev_zmax = 1.75*depthlim[1]; |
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dev_zmax = 1.25*depthlim[1]; |
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if (dev_zmin > dev_zmax/5.) |
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dev_zmin = dev_zmax/5.; |
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} |
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dev_zmin = odev.v.vfore; |
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if (odev.v.vaft > FTINY) |
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dev_zmax = odev.v.vaft; |
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if (dev_zmin < dev_zmax/100.) |
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dev_zmin = dev_zmax/100.; |
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if (dev_zmin*500. < dev_zmax) |
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dev_zmax = dev_zmin*500.; |
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setzrat(); |
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xmax = dev_zmin * tan(PI/180./2. * odev.v.horiz); |
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xmin = -xmax; |
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(VWCHANGE|VWSTEADY)) { /* clear samples if new */ |
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odClean(); |
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viewflags &= ~VWCHANGE; /* change noted */ |
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} |
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setglpersp(&odev.v); /* reset view & clipping planes */ |
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} else if (viewflags & VWSTEADY) |
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odRedrawAll(); |
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setglpersp(); /* reset view & clipping planes */ |
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} |
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inpresflags |= DFL(DC_RESUME); |
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return; |
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case CTRL('R'): /* redraw screen */ |
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odRemap(0); |
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odRemap(0); /* new tone mapping */ |
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glClear(GL_DEPTH_BUFFER_BIT); |
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#ifdef STEREO |
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setstereobuf(STEREO_BUFFER_RIGHT); |
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return; |
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case CTRL('L'): /* refresh from server */ |
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if (inpresflags & DFL(DC_REDRAW)) |
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return; |
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return; /* already called */ |
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XRaiseWindow(ourdisplay, gwind); |
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XFlush(ourdisplay); |
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sleep(1); |
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wipeclean(); /* fresh display */ |
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odRemap(1); /* fresh tone mapping */ |
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dev_flush(); /* draw octrees */ |
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XFlush(ourdisplay); /* raise up window */ |
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sleep(1); /* wait for restacking */ |
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dev_clear(); /* clear buffer and samples */ |
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odRemap(1); /* start fresh histogram */ |
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inpresflags |= DFL(DC_REDRAW); /* resend values from server */ |
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rayqleft = 0; /* hold off update */ |
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return; |
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case 'K': /* kill rtrace process(es) */ |
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inpresflags |= DFL(DC_KILL); |
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} |
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xmin = eexp->x; xmax = eexp->x + eexp->width; |
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ymin = odev.vres - eexp->y - eexp->height; ymax = odev.vres - eexp->y; |
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if (xmin <= 0 && xmax >= odev.hres-1 && |
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ymin <= 0 && ymax >= odev.vres) { |
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DCHECK(eexp->count, WARNING, "multiple clear in fixwindow"); |
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wipeclean(); /* make sure we're go */ |
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return; |
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} |
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/* clear portion of depth */ |
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glPushAttrib(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
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glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); |