ok ...
i modified the nvidia simple_framebuffer_object example todo the same as
my version of osgdepthshadow example. The problem of limited
draws to the fbo does not occur !
I also tried the latest cvs - same problem.
.. so i have to assume the problem is caused by osg.
or at least osg and my new 7600 (nv73).
i would like to continue to work with osg. cos otherwise i would miss
some very nice and handy features. ;)
any other idears how to appraoch this?
regards, Tobi.
>
> Hi..
>
> old one was 128.. new one is 256 MB.
> .. and im only creating the tex with 512x512 (in my app, 1024x1024 in
> depthshadowexample) once.
> So it should be a memmory problem ?!?!
>
> I hope its not a driver problem. tried latest 90.47 and the instrumened
> driver.
> The last thing i might try is to code the prog in plain opengl.. to see if
> its really the driver.
>
> Tobi
>
>
>
> > Hi Tobes,
> >
> > My best guess would be a out of memory or driver issue. How big are
> > the two cards?
> >
> > Robert.
> >
> > On 10/31/06, Tobes <[EMAIL PROTECTED]> wrote:
> > > Hi..
> > > heres the problem in short:
> > > Im doing some massive shaddow mapping with many lights. So.. i setup a
> > > shaddowmap atlas.
> > > This went fine with my old card - geforce 5600.
> > > With my new card 7600gt i have some problems when adding 21... instead
> of 20
> > > shaddow maps.
> > > What happens then?
> > > - the shaddowmap gets bad entries outside of the used map space (not
> really
> > > a problem, but doesnt happen with 20)
> > > - every few frames. the program halts and the whole atlas gets strange
> > > entries.
> > >
> > > Im complety out of options and dont know how i should proceed
further..
> so i
> > > really appreciate any help.
> > >
> > > thanks.. Tobi
> > >
> > > (using osg 1.2 win32 pre-build release on winxp)
> > >
> > >
> > > to make it easier to see the problem, i moddified the depthshaddow
> example
> > > by
> > > replacing
> > >
> > > // set up the render to texture camera.
> > > { everyting witin brakkets
> > > }
> > >
> > > by
> > >
> > > int ncams = 20; // 21 is bad for me
> > > // create the texgen node to project the tex coords onto the subgraph
> > > osg::TexGenNode* texgenNode = new osg::TexGenNode;
> > > texgenNode->setTextureUnit(unit);
> > > group->addChild(texgenNode);
> > > CameraNode* cam;
> > > int xact = 0;
> > > int yact = 0;
> > > int i;
> > > for(i=0;i<ncams;i++){
> > > cam = new CameraNode;
> > > cam->setClearMask(GL_DEPTH_BUFFER_BIT);
> > > cam->setClearColor(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
> > > cam->setComputeNearFarMode(osg::CameraNode::DO_NOT_COMPUTE_NEAR_FAR);
> > > cam->setViewport( xact, yact, 64,64);
> > > osg::StateSet* _local_stateset = cam->getOrCreateStateSet();
> > > _local_stateset->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
> > > float factor = 0.0f;
> > > float units = 1.0f;
> > > ref_ptr<PolygonOffset> polygon_offset = new PolygonOffset;
> > > polygon_offset->setFactor(factor);
> > > polygon_offset->setUnits(units);
> > > _local_stateset->setAttribute(polygon_offset.get(), StateAttribute::ON
|
> > > StateAttribute::OVERRIDE);
> > > _local_stateset->setMode(GL_POLYGON_OFFSET_FILL, StateAttribute::ON |
> > > StateAttribute::OVERRIDE);
> > > ref_ptr<CullFace> cull_face = new CullFace;
> > > cull_face->setMode(CullFace::FRONT);
> > > _local_stateset->setAttribute(cull_face.get(), StateAttribute::ON |
> > > StateAttribute::OVERRIDE);
> > > _local_stateset->setMode(GL_CULL_FACE, StateAttribute::ON |
> > > StateAttribute::OVERRIDE);
> > > cam->setRenderOrder(osg::CameraNode::PRE_RENDER);
> > >
> cam->setRenderTargetImplementation(osg::CameraNode::FRAME_BUFFER_OBJECT);
> > > cam->attach(osg::CameraNode::DEPTH_BUFFER, texture);
> > > cam->addChild(shadowed);
> > > group->addChild(cam);
> > > //cam->setViewMatrixAsLookAt(Vec3(100.0, 0, 0.0), Vec3(0.0, 0.0, 0.0),
> > > Vec3(0, 1, 0));
> > > //cam->setProjectionMatrixAsOrtho( -100, 100, -100, 100, 1.0f,
200.0f);
> > > group->setUpdateCallback(new
> UpdateCameraAndTexGenCallback(light_transform,
> > > cam, texgenNode));
> > > //realcams[i] = cam;
> > > // new scanline?
> > > xact +=64;
> > > if(xact>=tex_width){
> > > xact =0;
> > > yact+=64;
> > > }
> > > }
> > >
> > > _______________________________________________
> > > osg-users mailing list
> > > [email protected]
> > > http://openscenegraph.net/mailman/listinfo/osg-users
> > > http://www.openscenegraph.org/
> > >
> > _______________________________________________
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> > http://www.openscenegraph.org/
> >
>
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