Hi Manjunath,
just loaded it with my vred app. After optimizing it a bit I get about 5
fps on my old ATI 9600 and 8 fps on a FX3000. Well rendering one
Geometry node with about 7 million triangles is not a good idea. How
much memory do you have?
As default the SceneFileHandler calls the tri stipper you can disable
this if you provide as the second parameter a NULL pointer. Perhaps this
solves your problem.
scene = SceneFileHandler::the().read(fileName, NULL);
Andreas
Hi Dirk,
That didn't work either. Here is a model
http://graphics.stanford.edu/data/3Dscanrep/xyzrgb/xyzrgb_dragon.ply.gz
that I am trying to load on a single node. This doesn't have anything to
do with the cluster. This model we can load using a plain
opengl program and get around 14 FPS. But when I convert
it to .osb (I convert to .off then .osb) and then try loading it with
the 10loading.cpp
example, opensg cannot load it.
Can anybody check if they can load this model
and report the frame rates they get ?
Can I also get the code that was used to load
this model, if it can be loaded successfully ?
Thanks,
Manju
On 6/3/05, Dirk Reiners <[EMAIL PROTECTED]> wrote:
Hi Manju,
On Fri, 2005-06-03 at 18:22 +0530, Manjunath Sripadarao wrote:
I am trying to (still) load a huge model using opensg. I had a
question regarding
geometry creation in opensg. Does opensg have 2 copies of vertices and
indices in memory ?
That is one that is loaded into opengl using
glBegin(...)
glVertex
glend(...)
This only consumes memory if it's inside a display list (which OpenSG
uses by default).
and another that is
GeoPositions3fPtr pnts = GeoPositions3f::create();
beginEditCP(pnts, GeoPositions3f::GeoPropDataFieldMask);
{
pnts->addValue(Pnt3f(x, y, z));
}
endEditCP(pnts, GeoPositions3f::GeoPropDataFieldMask);
Are there 2 copies in memory that are kept ? Or is there only one copy
in memory ?
If you use dlists yes, there are two copies in memory.
Is there a way to make it use a opengl display list directly ?
Not currently.
That is I create an opengl display list and pass to opensg and opensg
uses this display
list to render geometry.
Not currently. The problem is that it's impossible to read display
lists, there is no way to get at the information for e.g. normal
calculation, bounding volume calculation or intersection.
You can turn display lists off before rendering to see if that fixes
your problem (geo->setDlistCache(false);, or add the attached code to
just turn it off).
But AFAIK you're on a cluster anyway, so no single node should need to
render the full model. Can you give us a little more background on when
exactly you're having problems?
Dirk
Add this before Geometry creation to turn off all dlists:
FieldContainerPtr pProto = Geometry::getClassType().getPrototype();
GeometryPtr pGeoProto = GeometryPtr::dcast(pProto);
if(pGeoProto != NullFC)
{
pGeoProto->setDlistCache(false);
}
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