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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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|
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/* values other than 0 or 255 do not map reliably */ |
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#ifndef PORTALP |
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#define PORTRED 0 /* -1, 0 or 255 */ |
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#define PORTGRN -1 /* -1, 0 or 255 */ |
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#define PORTBLU 255 /* -1, 0 or 255 */ |
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#define PORTALP -1 /* -1 or 255 */ |
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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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#define isportal(c) ((PORTRED<0 || (c)[0]==PORTRED) && \ |
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(PORTGRN<0 || (c)[1]==PORTGRN) && \ |
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(PORTBLU<0 || (c)[2]==PORTBLU) && \ |
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(PORTALP<0 || (c)[3]==PORTALP)) |
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#define doportals() if (gmPortals) \ |
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gmDrawPortals(PORTRED,PORTGRN,PORTBLU,PORTALP); else |
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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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{ |
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extern char *getenv(); |
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static RGBPRIMS myprims = STDPRIMS; |
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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}; |
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static int atlOK[] = {GLX_RGBA, GLX_DOUBLEBUFFER, |
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GLX_RED_SIZE,4, GLX_GREEN_SIZE,4, |
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GLX_BLUE_SIZE,4, GLX_DEPTH_SIZE,15, None}; |
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#else |
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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_ALPHA_SIZE,1, |
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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; |
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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); |
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glDepthFunc(GL_LEQUAL); |
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glEnable(GL_DITHER); |
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glClearColor(0, 0, 0, 0); |
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glFrontFace(GL_CCW); |
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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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|
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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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#ifdef DOBJ |
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ndrawn += dobj_render(); |
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#endif |
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if (ndrawn) |
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doportals(); |
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checkglerr("rendering right eye"); |
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popright(); /* draw left eye */ |
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#endif |
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#ifdef DOBJ |
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ndrawn += dobj_render(); |
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#endif |
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if (ndrawn) |
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doportals(); |
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glXSwapBuffers(ourdisplay, gwind); |
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checkglerr("rendering base view"); |
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} |
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xferdepth() /* load and clear depth buffer */ |
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{ |
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register GLfloat *dbp; |
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register GLubyte *cbuf; |
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register GLubyte *pbuf; |
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|
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if (depthbuffer == NULL) { /* allocate private depth buffer */ |
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#ifdef STEREO |
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} |
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/* allocate alpha buffer for portals */ |
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if (gmPortals) |
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cbuf = (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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cbuf = NULL; |
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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 (cbuf != NULL) |
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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, cbuf); |
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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 (cbuf != NULL && isportal(cbuf+4*(dbp-depthright))) |
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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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GL_DEPTH_COMPONENT, GL_FLOAT, depthbuffer); |
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if (cbuf != NULL) |
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if (pbuf != NULL) { |
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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, cbuf); |
547 |
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GL_RED, GL_UNSIGNED_BYTE, pbuf); |
548 |
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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 (cbuf != NULL && isportal(cbuf+4*(dbp-depthbuffer))) |
553 |
> |
if (pbuf != NULL && pbuf[dbp-depthbuffer]&0x40) |
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*dbp = FHUGE; |
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else |
556 |
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*dbp = mapdepth(*dbp); |
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glClear(GL_DEPTH_BUFFER_BIT); /* clear system depth buffer */ |
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if (cbuf != NULL) |
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free((char *)cbuf); /* free our color buffer */ |
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odDepthMap(0, depthbuffer); /* transfer depth data */ |
559 |
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if (pbuf != NULL) |
560 |
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free((char *)pbuf); /* free our portal buffer */ |
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} |
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FVECT direc; |
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{ |
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GLfloat gldepth; |
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GLubyte glcolor[4]; |
586 |
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double dist; |
587 |
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|
588 |
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if (dx<0 | dx>=odev.hres | dy<0 | dy>=odev.vres) |
592 |
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else { |
593 |
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glReadPixels(dx,dy, 1,1, GL_DEPTH_COMPONENT, |
594 |
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GL_FLOAT, &gldepth); |
604 |
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if (gmPortals) { |
605 |
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glReadPixels(dx,dy, 1,1, GL_RGBA, |
606 |
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GL_UNSIGNED_BYTE, glcolor); |
607 |
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if (isportal(glcolor)) |
608 |
– |
return(FHUGE); |
609 |
– |
} |
595 |
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dist = mapdepth(gldepth); |
596 |
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} |
597 |
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if (dist >= .99*FHUGE) |
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XNoOp(ourdisplay); /* makes sure we're not idle */ |
806 |
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|
807 |
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viewflags &= ~VWSTEADY; /* flag moving view */ |
808 |
< |
setglpersp(&odev.v); /* start us off in perspective */ |
808 |
> |
setglpersp(); /* start us off in perspective */ |
809 |
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while (!XCheckMaskEvent(ourdisplay, |
810 |
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ButtonReleaseMask, levptr(XEvent))) { |
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/* get cursor position */ |
825 |
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#ifdef DOBJ |
826 |
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ndrawn += dobj_render(); |
827 |
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#endif |
843 |
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if (ndrawn) |
844 |
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doportals(); |
828 |
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popright(); |
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#endif |
830 |
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/* redraw octrees */ |
832 |
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#ifdef DOBJ |
833 |
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ndrawn += dobj_render(); /* redraw objects */ |
834 |
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#endif |
852 |
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if (ndrawn) |
853 |
– |
doportals(); |
835 |
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glXSwapBuffers(ourdisplay, gwind); |
836 |
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if (!ndrawn) |
837 |
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sleep(1); /* for reasonable interaction */ |
847 |
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|
848 |
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|
849 |
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static |
850 |
< |
setglpersp(vp) /* set perspective view in GL */ |
870 |
< |
register VIEW *vp; |
850 |
> |
setglpersp() /* set perspective view in GL */ |
851 |
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{ |
852 |
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double d, xmin, xmax, ymin, ymax; |
853 |
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GLfloat vec[4]; |
859 |
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dev_zmax = 100.; |
860 |
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} else { |
861 |
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dev_zmin = 0.5*depthlim[0]; |
862 |
< |
dev_zmax = 1.75*depthlim[1]; |
862 |
> |
dev_zmax = 1.25*depthlim[1]; |
863 |
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if (dev_zmin > dev_zmax/5.) |
864 |
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dev_zmin = dev_zmax/5.; |
865 |
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} |
929 |
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wipeclean() /* prepare for redraw */ |
930 |
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{ |
931 |
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glDrawBuffer(GL_BACK); /* use double-buffer mode */ |
932 |
< |
glReadBuffer(GL_FRONT); /* read back visible contents */ |
953 |
< |
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); |
932 |
> |
glReadBuffer(GL_BACK); |
933 |
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/* clear buffers */ |
934 |
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#ifdef STEREO |
935 |
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setstereobuf(STEREO_BUFFER_RIGHT); |
937 |
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setstereobuf(STEREO_BUFFER_LEFT); |
938 |
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#endif |
939 |
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glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
961 |
– |
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE); |
940 |
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freedepth(); |
941 |
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if ((viewflags&(VWCHANGE|VWSTEADY)) == |
942 |
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(VWCHANGE|VWSTEADY)) { /* clear samples if new */ |
943 |
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odClean(); |
944 |
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viewflags &= ~VWCHANGE; /* change noted */ |
945 |
< |
} |
945 |
> |
} else if (viewflags & VWSTEADY) |
946 |
> |
odRedrawAll(); |
947 |
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setglpersp(&odev.v); /* reset view & clipping planes */ |
948 |
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} |
949 |
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|
994 |
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inpresflags |= DFL(DC_RESUME); |
995 |
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return; |
996 |
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case CTRL('R'): /* redraw screen */ |
997 |
< |
odRemap(0); |
997 |
> |
odRemap(0); /* new tone mapping */ |
998 |
|
glClear(GL_DEPTH_BUFFER_BIT); |
999 |
|
#ifdef STEREO |
1000 |
|
setstereobuf(STEREO_BUFFER_RIGHT); |
1004 |
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return; |
1005 |
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case CTRL('L'): /* refresh from server */ |
1006 |
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if (inpresflags & DFL(DC_REDRAW)) |
1007 |
< |
return; |
1007 |
> |
return; /* already called */ |
1008 |
|
XRaiseWindow(ourdisplay, gwind); |
1009 |
< |
XFlush(ourdisplay); |
1010 |
< |
sleep(1); |
1011 |
< |
wipeclean(); /* fresh display */ |
1012 |
< |
odRemap(1); /* fresh tone mapping */ |
1034 |
< |
dev_flush(); /* draw octrees */ |
1009 |
> |
XFlush(ourdisplay); /* raise up window */ |
1010 |
> |
sleep(1); /* wait for restacking */ |
1011 |
> |
dev_clear(); /* clear buffer and samples */ |
1012 |
> |
odRemap(1); /* start fresh histogram */ |
1013 |
|
inpresflags |= DFL(DC_REDRAW); /* resend values from server */ |
1036 |
– |
rayqleft = 0; /* hold off update */ |
1014 |
|
return; |
1015 |
|
case 'K': /* kill rtrace process(es) */ |
1016 |
|
inpresflags |= DFL(DC_KILL); |
1043 |
|
} |
1044 |
|
xmin = eexp->x; xmax = eexp->x + eexp->width; |
1045 |
|
ymin = odev.vres - eexp->y - eexp->height; ymax = odev.vres - eexp->y; |
1046 |
+ |
|
1047 |
+ |
if (xmin <= 0 && xmax >= odev.hres-1 && |
1048 |
+ |
ymin <= 0 && ymax >= odev.vres) { |
1049 |
+ |
DCHECK(eexp->count, WARNING, "multiple clear in fixwindow"); |
1050 |
+ |
wipeclean(); /* make sure we're go */ |
1051 |
+ |
return; |
1052 |
+ |
} |
1053 |
|
/* clear portion of depth */ |
1054 |
|
glPushAttrib(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
1055 |
|
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); |