Re: [osg-users] Best way to cull object hidden by a mountain

Sorry but I still have questions .. I found this article about LOD and Shaders : http://codeflow.org/entries/2010/nov/07/opengl-4-tessellation/ If I correctly understood how the OcclusionQueryNode works, I would say I can't replace my HeightField with that kind of shaders AND expect my

Re: [osg-users] Best way to cull object hidden by a mountain

Thats ok now, thanks a lot ! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=67891#67891 ___ osg-users mailing list osg-users@lists.openscenegraph.org

Re: [osg-users] Best way to cull object hidden by a mountain

oups I answer too fast try it ocqn->getQueryStateSet()->setRenderBinDetails(100,"DepthSortedBin") mp3butcher wrote: > try > ocqn->getQueryStateSet()->setRenderBinDetails(100,"RenderBin",TRANSPARENT_BIN) > > > > kragnfroll wrote: > > Ok. Then I've a problem with my occlusionQuery node ! > >

Re: [osg-users] Best way to cull object hidden by a mountain

try ocqn->getQueryStateSet()->setRenderBinDetails(100,"RenderBin",TRANSPARENT_BIN) kragnfroll wrote: > Ok. Then I've a problem with my occlusionQuery node ! > > Here is how I tested : > - breakpoint in the OcclusionQueryNode::getNumPixels function > - configured OQN with a QueryFrameCount of

Re: [osg-users] Best way to cull object hidden by a mountain

Ok. Then I've a problem with my occlusionQuery node ! Here is how I tested : - breakpoint in the OcclusionQueryNode::getNumPixels function - configured OQN with a QueryFrameCount of 500 to see occluded node coming And the result is : - occlusion working when a node is outside the camera field -

Re: [osg-users] Best way to cull object hidden by a mountain

If I remember correctly my previous reading of OcclusionQueryNode It makes a "number of fragments passing the depth test" query test on the bounding volume geometry of children nodes (discarding framebuffer writes) and decide to draw or not children based on the fragments number of the query

Re: [osg-users] Best way to cull object hidden by a mountain

My last problem related to this topic is how to be sure that the OcclusionQueryNode works. I made a few tests and it seems that the depth buffer is making all the job, but I can't prove it. I'm reading the code to try to understand how the OcclusionQueryNode works (and I'm not stuck), but tips

Re: [osg-users] Best way to cull object hidden by a mountain

I gotcha. In a legacy situation, it might be hard to integrate osgEarth properly. So, what is your current remaining obstacle? ​ ___ osg-users mailing list osg-users@lists.openscenegraph.org

Re: [osg-users] Best way to cull object hidden by a mountain

Hi Jason, I'm not making a full new application, I'm just upgrading the old OpenGL code to OSG, so there is lots of things I should have to destroy to use osgEarth, like the way tile are loaded, georeferencing management all that tools made to works on the rasters. My decision was to use

Re: [osg-users] Best way to cull object hidden by a mountain

Hey Valerian, Just curious, but what do you need to do with non georeferenced images that osgEarth can't do? Are you providing georeferencing yourself externally? Jason On Mon, Jun 27, 2016 at 6:05 AM Valerian Merkling wrote: > Chris, I already try to use osgEarth,

Re: [osg-users] Best way to cull object hidden by a mountain

Have you considered looking at osgEarth? There's a lot of capability there, including line rendering to textures with CSS-like styles using AGG. I've used it for this sort of thing, and when you're already DOING geospatial stuff, you should really think about using the OSG toolkit that was really

Re: [osg-users] Best way to cull object hidden by a mountain

Am 24.06.2016 um 17:14 schrieb Valerian Merkling: Hi Robert, Thanks for your clarification about OccluderNode. I already looked at the osgocclusionquery example. If I'm right, it just need to add an OcclusionQueryNode to contain the node wich have to be occluded by the rest of the scene

Re: [osg-users] Best way to cull object hidden by a mountain

Ok OcclusionQueryNode works fine for me now, this post helped me : http://forum.openscenegraph.org/viewtopic.php?t=8955=occlusionquerynode It seems this problem is still real : an empty OcclusionQueryNode occludes everythings ! Can anyone explain me why ? -- Read this topic

Re: [osg-users] Best way to cull object hidden by a mountain

Hi Robert, Thanks for your clarification about OccluderNode. I already looked at the osgocclusionquery example. If I'm right, it just need to add an OcclusionQueryNode to contain the node wich have to be occluded by the rest of the scene graph. I wasn't able to make it works so I may need to

Re: [osg-users] Best way to cull object hidden by a mountain

HI Valerian, The osg::OccluderNode is not appropriate for what you are trying to achieve, it only works when you have convex planar occluder geometries that you can use to do the culling. It's useful for town or building scenes where walls can form large occluders relative to screen space. A

Re: [osg-users] Best way to cull object hidden by a mountain

I might show some pieces but there is a lot of code and i'm not allowed to share it :( Right now I need to understand how occlusion culling is supposed to be used with HeightField (is it is possible). I made a few tests in my code but I did not keep them as nothing was working.

Re: [osg-users] Best way to cull object hidden by a mountain

I might be able to help you with this. Is your source something you can share, possibly off-list? On Wed, Jun 22, 2016 at 9:55 AM, Valerian Merkling wrote: > Hi, > > I'm working with OpenSceneGraph 3.4.0 on a kind of GIS app. > > I'm rendering the ground using textured

[osg-users] Best way to cull object hidden by a mountain

Hi, I'm working with OpenSceneGraph 3.4.0 on a kind of GIS app. I'm rendering the ground using textured HeightField square. My scene graph is cut in two part, a group node with all the textured HeightFields, and another containing all my 3D objects (sorted in a quadtree). I've got a lot of