From: Volley, Axel (AXEL.VOLLEY++at++ca.com)
Date: 07/31/2000 18:26:41
Yair Kurzion wrote:
>
> Hello Axel !
>
> pfBillboard does not support fluxed geosets.
I guess there is a difference between a "fluxed gset" and a pfGeoSet, that I
convert into flux-data ?
Attached is a simple performer-app based on "simple.C" from
"/usr/share/Performer/src/pguide/libpf/C++/". If you define GSETFLUX, than it
compiles the version, which "fluxes" the whole pfGeoSet, otherwise it only
fluxes the color-attributes. It crashes in both cases on an O2 (in
"pfBillboard::pf_draw") but not on an Onyx2.
-- Axel
>
> The ``working'' version that you observed is probably drawing the same Fluxed
> copy of the geoset over and over. It gets written over as you modify the GeoSet
> so it isn't MP-safe. We plan to address this after the 2.4 release.
>
> You should be able to use a pfFlux for color attributes on a non-fluxed geoset.
> If this crashes on O2, please send me a short sample code demonstrating the
> crash.
>
> -yair
>
> >
> > I have a pfBillboard with one pfGeoSet attached. Because I want to modify the
> > color of the GeoSet I can either flux the color attributes of the pfGeoSet or I
> > can flux the whole pfGeoSet ( I am not using pfFluxedGSetInit, because the
> > length of the attributes lists doesn't change).
> > In both cases it crashes on an O2 but runs fine on an Onyx2. Fluxing a pfGeoSet
> > in the described ways works fine as long it is not attached to a pfBillboard. I
> > tested it with Performer 2.2.7 and 2.2.8.
> >
> > Axel W. Volley ~ Viewpoint Visualization - A CA Company
> > ++1-972-960-2301 x227 FAX ++1-972-960-9049
> > mailto:axel.volley++at++viewpoint.com
> > -----------------------------------------------------------------------
> > List Archives, FAQ, FTP: http://www.sgi.com/software/performer/
> > Submissions: info-performer++at++sgi.com
> > Admin. requests: info-performer-request++at++sgi.com
> >
>
> --
> \_________ \_____ \__ \__ \_____ Yair Kurzion
> \_________ \_____ \__ \__ \_____ yair++at++sgi.com
> \__ \__ \____\__ \__ http://reality.sgi.com/yair
> \__ \__ \__ Work: (650) 933-6502
> \__ \__ \__ Home: (408) 226-9771
> \__ \__ \__
-- Axel W. Volley ~ MultiGen-Paradigm - A CA Company ++1-972-960-2301 x227 FAX ++1-972-960-9049 mailto:axel.volley++at++ca.com
// // Copyright 1995, Silicon Graphics, Inc. // ALL RIGHTS RESERVED // // UNPUBLISHED -- Rights reserved under the copyright laws of the United // States. Use of a copyright notice is precautionary only and does not // imply publication or disclosure. // // U.S. GOVERNMENT RESTRICTED RIGHTS LEGEND: // Use, duplication or disclosure by the Government is subject to restrictions // as set forth in FAR 52.227.19(c)(2) or subparagraph (c)(1)(ii) of the Rights // in Technical Data and Computer Software clause at DFARS 252.227-7013 and/or // in similar or successor clauses in the FAR, or the DOD or NASA FAR // Supplement. Contractor/manufacturer is Silicon Graphics, Inc., // 2011 N. Shoreline Blvd. Mountain View, CA 94039-7311. // // Permission to use, copy, modify, distribute, and sell this software // and its documentation for any purpose is hereby granted without // fee, provided that (i) the above copyright notices and this // permission notice appear in all copies of the software and related // documentation, and (ii) the name of Silicon Graphics may not be // used in any advertising or publicity relating to the software // without the specific, prior written permission of Silicon Graphics. // // THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, // EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY // WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. // // IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR ANY SPECIAL, // INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY // DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, // WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY // THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE // OR PERFORMANCE OF THIS SOFTWARE. // // // simpleC.C: simple Performer program for programmer's guide // // $Revision: 1.10 $ // $Date: 1995/11/22 14:35:21 $ //
#include <stdlib.h>
#include <Performer/pf/pfChannel.h> #include <Performer/pf/pfLightSource.h> #include <Performer/pf/pfNode.h> #include <Performer/pf/pfScene.h> #include <Performer/pf/pfBillboard.h>
#include <Performer/pfutil.h> #include <Performer/pfdu.h>
static bool billboard = true;
// if defined the whole geoset gets fluxed, otherwise only the color-attributes. /* #define GSETFLUX 1 */
int main (int argc, char *argv[]) { float t = 0.0f; int i;
// Initialize Performer pfInit(); // no billboard if (argc > 1) { billboard = false; // Load all loader DSO's before pfConfig() forks pfdInitConverter(argv[1]); }
// Use default multiprocessing mode based on number of // processors. // pfMultiprocess( PFMP_APPCULLDRAW ); // initiate multi-processing mode set in pfMultiprocess call // FORKs for Performer processes, CULL and DRAW, etc. happen here. // pfConfig(); // Append to Performer search path, PFPATH, files in // /usr/share/Performer/data */ pfFilePath(".:/usr/share/Performer/data");
// some declarations pfNode *p_root = NULL; pfBillboard* p_pos = NULL; int num_verts = 4; pfVec3* p_vtx_buf; #ifdef GSETFLUX pfVec4* p_clr_buf; #else pfFlux* p_clr_buf; #endif pfVec3* tmp_vtx; pfVec4* tmp_clr; pfFlux* p_fluxgset; ushort *index;
// create a billboard by hand if (billboard) { void *arena = pfGetSharedArena(); // create a billboard p_pos = new pfBillboard; p_pos->setName("pos"); p_pos->setAxis(pfVec3(0.0f, 0.0f, 1.0f)); p_pos->setMode(PFBB_ROT, PFBB_POINT_ROT_WORLD); // make them visible everywhere //p_pos->setTravFuncs(PFTRAV_DRAW, preDraw, postDraw);
/// geometry int *lengths = (int*)pfMalloc(3*sizeof(int), arena); lengths[0]=num_verts; pfVec2 *p_tcoords = (pfVec2 *)pfMalloc( sizeof(pfVec2) * num_verts, arena ); p_tcoords[0].set(0.0f, 0.0f); p_tcoords[1].set(1.0f, 0.0f); p_tcoords[2].set(0.0f, 1.0f); p_tcoords[3].set(1.0f, 1.0f);
p_vtx_buf = (pfVec3 *)pfMalloc(num_verts * sizeof(pfVec3)); #ifdef GSETFLUX p_clr_buf = (pfVec4 *)pfMalloc(num_verts * sizeof(pfVec4)); #else p_clr_buf = new(arena) pfFlux(sizeof(pfVec4) * num_verts, PFFLUX_DEFAULT_NUM_BUFFERS); #endif
tmp_vtx= p_vtx_buf; #ifdef GSETFLUX tmp_clr= p_clr_buf; #else tmp_clr= (pfVec4 *) p_clr_buf->getCurData(); #endif
#define SIZE 200 tmp_vtx[0][0] = -SIZE/2.0; tmp_vtx[0][1] = 0.0; tmp_vtx[0][2] = -SIZE/2.0;
tmp_vtx[1][0]= SIZE/2.0; tmp_vtx[1][1]= 0.0; tmp_vtx[1][2]= -SIZE/2.0;
tmp_vtx[2][0]= -SIZE/2.0; tmp_vtx[2][1]= 0.0; tmp_vtx[2][2]= SIZE/2.0;
tmp_vtx[3][0]= SIZE/2.0; tmp_vtx[3][1]= 0.0; tmp_vtx[3][2]= SIZE/2.0;
for (i=0;i<num_verts;i++) { tmp_clr[i][0]=1.0; /* r */ tmp_clr[i][1]=1.0; /* g */ tmp_clr[i][2]=1.0; /* b */ tmp_clr[i][3]=1.0; /* a */ }
// setup the geoset pfGeoSet* p_gset = new(arena) pfGeoSet; p_gset->setAttr(PFGS_COORD3, PFGS_PER_VERTEX, (void*)p_vtx_buf, 0); p_gset->setAttr(PFGS_TEXCOORD2, PFGS_PER_VERTEX, p_tcoords, 0); p_gset->setAttr(PFGS_COLOR4, PFGS_PER_VERTEX, (void*)p_clr_buf, 0); //p_gset->setGState(p_gstate); p_gset->setPrimType(PFGS_TRISTRIPS); p_gset->setNumPrims(1); p_gset->setPrimLengths(lengths);
#ifdef GSETFLUX // flux the geoset p_fluxgset = new(arena) pfFlux(sizeof(*p_gset), PFFLUX_DEFAULT_NUM_BUFFERS ); printf("(**) Init flux gset-data\n"); p_fluxgset->initData(p_gset); #else printf("(**) Init flux color-data\n"); p_clr_buf->initData(p_clr_buf->getCurData()); #endif
// add it to the billboard p_pos->insertGSet(0, p_gset); p_root = (pfNode *)p_pos; } else if (billboard == false) { // load p_root = pfdLoadFile(argv[1]); if (p_root == NULL) { exit(-1); } }
// Attach loaded file to a new pfScene pfScene *scene = new pfScene; scene->addChild(p_root);
// Configure and open GL window pfPipe *p = pfGetPipe(0); pfPipeWindow *pw = new pfPipeWindow(p); pw->setWinType(PFPWIN_TYPE_X); pw->setName("IRIS Performer"); pw->setOriginSize(0,0,500,500); pw->open(); // Create and configure a pfChannel. pfChannel *chan = new pfChannel(p); chan->setScene(scene); chan->setFOV(45.0f, 0.0f); // determine extent of scene's geometry pfSphere bsphere; p_root->getBound(&bsphere); chan->setNearFar(1.0f, 10.0f * bsphere.radius);
// Create a pfLightSource and attach it to scene scene->addChild(new pfLightSource);
#if 0 FILE* file = fopen ("scene.out","w"); pfPrint(scene, PFTRAV_SELF | PFTRAV_DESCEND, PFPRINT_VB_INFO, file); fclose(file); #endif
// Simulate for twenty seconds. while (t < 20.0f) { pfCoord view; float s, c; // Go to sleep until next frame time. pfSync(); // Initiate cull/draw for this frame. pfFrame(); // Compute new view position. t = pfGetTime(); pfSinCos(45.0f*t, &s, &c); view.hpr.set(45.0f*t, -10.0f, 0); view.xyz.set(2.0f * bsphere.radius * s, -2.0f * bsphere.radius *c, 0.5f * bsphere.radius); chan->setView(view.xyz, view.hpr);
if (billboard) { // get a pointer to the billboard's color array #ifdef GSETFLUX pfGeoSet* p_tmpgset = (pfGeoSet *)p_fluxgset->getWritableData(); p_tmpgset->getAttrLists(PFGS_COLOR4, (void**)&tmp_clr, &index); #else pfVec4* tmp_clr = (pfVec4 *)p_clr_buf->getWritableData(); #endif for (int i = 0; i < num_verts; i++) { // make it "more" red tmp_clr[i][1] -= 0.002; tmp_clr[i][2] -= 0.002; } // end of writing p_fluxgset->writeComplete(); } } // Terminate parallel processes and exit pfExit(); return 0; }
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