Re: [osg-users] To run this Examples osgdeferred , where to download this osgdeferred about Data Resources ?

They are kept in a separate repo: https://github.com/openscenegraph/OpenSceneGraph-Data Do keep in mind the license for said data is different: >From GitHub: If not otherwise specified all files in the OpenSceneGraph-Data are provided free for non commericial usage. Commericial users may use the

Re: [osg-users] How to implement a Laser Simulation?

I did a similar project with adaptive headlamps a couple years ago. The way I would do this is to think about this as sort of a spot light with a projector slide. So we can also think about this also a spot light with a shadow. So what I did was to setup a "slide" scene in which I would render

Re: [osg-users] Best Practices and Switches

Thank you for your reply. In general my CPU load is pretty good, what I am really concerned about is reducing the number of OpenGL calls/driver overhead. If I have 200 signs all under there own switch, each sign is only 4-64 triangles each, and all the signs share the same texture mosaic. Havi

[osg-users] Best Practices and Switches

I have some scenes with tons of osgSim::MultiSwitch's, I think for some of my scenes it can be in the low 1000s. For a scene these are typically setup once, and then rarely changed. From what I understand a lot of the optimize operations do not work across switches, which makes sense, I would th

[osg-users] SSBO Instancing

I currently have a hardware instancing system that is setup for cars. I currently have the transform data stored in a TBO (texture buffer object). What I want to do is to change over to using a SSBO (shader storage buffer object), and to only copying the minimum amount of data I need per frame.

Re: [osg-users] osg apps on gpu cluster

GPU affinity is really only available with Quadro cards. AMD has there own system that is a little more complicated, and has a few more featuresbut I am not really experienced with those, and I believe they are only usable on the FirePro/Radeon Pro cards. We have found setting the GPU affin

Re: [osg-users] Latency

I am not running it in Quadro mosaic mode. I do have a slightly older version of the program running on a render cluster with 5 2-gpu nodes driving 16 displays that runs fine on windows 7. I am starting to suspect it has something to do with the Windows - Desktop Window Manager (DWM) compositi

[osg-users] Latency

I currently have an odd problem I am stuck on. I have a system with 2 Quadro P5000 cards- driving 3 displays that are warped and blended on a 120 degree dome. Running Windows 10. The application is ground vehicle simulation - I have pretty high rates of optical flow. Each display is running it

Re: [osg-users] Image containing floats

yes this is doable. You need to set the internal format to something like: GL_RGBA32F and the source type to float on your texture. You might look at the OSG forest example, and its use of osg::TextureBuffer. Basically with the forest example, its doing instancing where the transforms are load

Re: [osg-users] Large number of occluder nodes

We do have a city scene at ground levels with lots of cars, pedestrian, construction zone clutter. The cars tend to be the worst as they can have up to 8 transparent object each from them. Large parking lots can have 500+ vehicles. OK so it sounds like what we need to do is to try to combine oc

Re: [osg-users] Large number of occluder nodes

I am using OccluderNode: for each "building" in config file{ auto &pnt_pair = vecs[i]; osg::OccluderNode* onode = new osg::OccluderNode(); osg::ConvexPlanarOccluder* occl = new osg::ConvexPlanarOccluder(); osg::ConvexPlanarPolygon& polly = occl->getOccluder();

[osg-users] Large number of occluder nodes

I have a scene with a large number of occluder nodes. Its a large city scene, and most of the nodes are relatively small, like 10-50 meters wide, like 10-30 meters tall, in a database that is maybe 20 km x 20 km. I have 1000's of these. They are basically extracted semi-automatically. Most of th

Re: [osg-users] multiple views + instancing

I am using osg 3.4.0. I am in a position where I could switch to a newer build. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=72392#72392 ___ osg-users mailing list osg-users@lists.openscenegraph.org

[osg-users] multiple views + instancing

Right now I having problems setting unique uniforms and num instances on a per view basis (camera). Right now I am using hardware instancing, with a scene with 1000's of relatively complex objects, but only a handful of actual models. I was able to encode index's to textures + position and rot

[osg-users] model matrix

Instead of multiplying the modelview matrix by the inverse view matrix in the vertex shader, does any one have a workable solution to get the model matrix setup as a uniform to begin with? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=72239#72239

Re: [osg-users] Faster framerate under Windows debugger?

Is the GPU time spiking when not running the debugger? Basically are you getting like 99% of your frames hitting your frame, then 1% that are taking 4-5 times longer than they are supposed to. I suspect you may have some kind of threading issue. Its easy to see slightly changing the timing of

Re: [osg-users] [osgPlugins] Open Flight

FYI I forgot to mention this from OSG 3.4.0, looking at the git repo, I does not look like anything has changed since with the plugin. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=71674#71674 ___ o

[osg-users] [osgPlugins] Open Flight

I have an issue I have some nodes with day, night , dusk flags set. I need this data for time of day control, as nodes set for night time have emissive properties, that do not work for day time, and the converse is true, and even worse is if both are active at the same time. I traced down into t

[osg-users] Light Map Sub

I have a number of scenes with a large number of old fashioned light maps. These light maps are basically textures that are set with blending and I have a number of issues with these. I have 100's of these lights in the scene, but only a few a handful should be active in a scene at a time. At

Re: [osg-users] OpenGL

yes this is possible, but I am afraid its likely not going to be simple, depending on how much integration between the two you are looking for. Most likely the easiest path for you is to just create a OSG program, and create your python program, and use sockets (https://docs.python.org/2/howto

Re: [osg-users] How to improve frame rate when loading multiple buildings ??

I would try to look at instancing. The OSG Forest is a good example. Instancing is were you tell the GPU to draw an object X number of times, and in the vertex shader you get a built in var gl_InstanceID, that tells you which item it is drawling (i.e. if you are drawling 100 versions, this wil

Re: [osg-users] Mip Maps

Thanks, this seems to mostly fix my issue. The texture filtering should have already been set for the model, but it looks like along the way, things that were supposed to be NEAREST_MIPMAP_LINEAR were getting set to LINEAR. -- Read this topic online here: http://forum.opensceneg

[osg-users] Mip Maps

I having an issue with rendering models with mip maps, when I render my scene I get some strange aliasing on text in the texture. I am mostly using DDS files, some texture have mip maps, some do not. If they do not have a mip map defined I am setting: texture->allocateMipmapLevels(); So to t

Re: [osg-users] Visualizing a light cone in scene

Basically What you want is the situation where the peak of the cone is at 0,0,0, and the base is at your negative direction pointed towards the ground. You may have to put transform between say the DOF node, and the cone. You might also just forgo the OSG cone, and have a model where the peak of

Re: [osg-users] Visualizing a light cone in scene

How are you planning on doing the search light? Are you planning on doing it as a semi-transparent cone? If so I would basically recommend looking at the DOF nodes (osgSim::DOFTransform), and look to attach the DOF node to your aircraft, and then placing your code under the DOF node. As per l

Re: [osg-users] Heap Corruption

What threading model are you using? One thing you need to be conscious of is when you update/modify your scenegraph and who is using it at that time. Some operations might better be served using different callback mechanisms, such as using viewer->addUpdateOperation. You might try switching you

Re: [osg-users] blending with shader

yeah basically you want to use un-warped coordinates for your blending image, and warped coordinates for your scene image. If not you would have to warp your blending image, which may be easier for you depending on process. As per passing your texture width, you can use the function textureSize

Re: [osg-users] blending with shader

OK, I see it now. Taking a quick look at the code, it seems what you want to do is to add a vertex shader, and pass the texture coordinates from you Mesh, into your fragment shader. Then in your fragment shader use the texture coordinates in this line: "vec4 sceneColor = texture2D(sceneTexture,

Re: [osg-users] blending with shader

Can you post your shader code? For testing you might try just rendering your texture coordinates for the scene texture, and the texture coordinates for your blending texture, they should be different. If you are still using this: " vec4 sceneColor = texture2D(sceneTexture, texCoord);\n" " vec4

[osg-users] Context specific UniformBufferObject

I am currently using a UniformBufferObject, to setup bindless textures. I have a UniformBufferObject, that I am using to upload to bind an array of texture handles. I added extensions, glGetTextureHandle, and glMakeTextureHandleResident to setup the texture handles - UBO. I have a class I hav

Re: [osg-users] OSG SIGGRAPH was a TOTALLY Massively Success

Can you send them to me as well? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=69287#69287 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/o

Re: [osg-users] Rendering Model in color

Two places where I have personally seen such issues, one from using code ported using an older version of OSG, the other was shader/driver differences between computers. If I remember some methods for setting color were removed moving from version 3.0 to 3.2, and I had some code where the inco

Re: [osg-users] blending with shader

The function I posted was similar to a function I called from my shader I ran in my final pass. What you have is functionally the similar. As per the inout, this states the parameter into the function is both an input and an output. I set the version for my shader to something like 4.5 in comp

Re: [osg-users] blending with shader

Taking a quick look at the code, yes it seems like it is a good example. So basically taking a quick read of this, you render your scene to a texture, then render a dome basically setup to do your warping, with the results from the render to texture, as its texture. You basically want to attach

Re: [osg-users] blending with shader

You should be able to grab the state set in the pre-render callback and bind your image for blending + add any uniforms you need there. You will want to pick a texture level that you are not going to use rendering your scene. You will also need to bind your shader the the scene as well. One t

Re: [osg-users] blending with shader

Its kind of tough to say without having a good idea about what exactly you can do with your plugin. I can say what you most likely need to do is to bind a texture with your blend map to your scene some how. Ideally you would do this in a 2nd rendering pass. Basically you want to perform blendin

Re: [osg-users] Creating a glowing sun in scene

I think looking at the osgblenddrawbuffers or osgmultiplerendertargets might be a good start. Neither of these are really doing what you are aiming for, but shows you how to add the color buffers and shaders. You might also look at the OSGPPU project. It I think it has some more relevant examp

Re: [osg-users] Creating a glowing sun in scene

There are a few ways of doing this. What you most likely want to do is to look up information on high dynamic range rendering. This involves multi-pass rendering where you use some kind of blur filter to make the brighest parts of your scene bleed out. This is a resonable example: http://learnop

Re: [osg-users] Bindless Textures

Thanks for posting the code it helped a lot. I did get the code to eventually work. What I found was I needed to make sure the shader was active first, then do the texture binds/ handle fetches. So what I found was I needed a top level node with the shader activated at the state set, then a chil

Re: [osg-users] Get monitor resolutions on extended desktops

if you are using windows you can use EnumDisplayMonitors, this will go through your list of physical displays attached to your computer. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=68145#68145 ___

Re: [osg-users] Speedup simplifier

what you can do is run the simplifier, then use osgDB::writeNodeFile() to save the simplified result then load that the next time you run. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=68144#68144 _

[osg-users] Bindless Textures

Has any one implemented bindless textures? I am trying to add this to my app to improve batching. I have a large scene, with lots of unique draw calls. We do use texture atlas's, the number of small objects is limited. I would like to further improve batching without having to redo textures. I d

Re: [osg-users] Techniques to shift CPU load to GPU

This is a pretty broad topic. It largely depends on what you are trying to display. If you are displaying a lot of the same thing, (say a warehouse filled with 1000's of identical boxes) you can use hardware instancing, there are a of sources you can look up on the subject. The OSG forest exam

[osg-users] DDS Textures

I have two separate issues with DDS textures. First and the most annoying is after moving from OSG-3.2.x to OSG-3.4.0 my grayscale textures now show up red. I did not change the source textures or models between versions. I have another problem with mip mapped dds textures. I have a number of

Re: [osg-users] OpenSceneGraph for driving simulation framework?

I work at the National Advanced Driving Simulator, at the University of Iowa. We running OSG on a 16 projector system, and one of the world's largest motion bases. I think we are #2 at this point. And we also use OSG in single PC simulators that we provide to a number of universities and other e

Re: [osg-users] Problem with Shadow Map

when I run the OSG Shadow example, it works. I also modified the example to use a composite viewer and that works as well. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=63792#63792 ___ osg-users mai

[osg-users] Problem with Shadow Map

I have added a shadow scene (using shadow map technique) to my scene graph and the shadow texture I am getting does not seem to make much sense see: https://www.nads-sc.uiowa.edu/userweb/dheitbri/shadowScene_small.jpg I turned on the debug HUD, the scene has 3 cars, on top of a white rectangle,

Re: [osg-users] Enabling Vsync gives dramatic increase in latency

If I remember from my conversations with people at NVidia, the least amount of latency you can get is 2-3 frames I cannot remember the exact number. If you select the additional per-rendered frames, this will increase this. Also remember your display will also add some additional latency as wel

Re: [osg-users] Synchronize animations between different computers

Just to give you some perspective, the way we do this at were I work is we use hardware frame lock. We have a single computer that is responsible for generating our frame data (i.e. object position and animation state), this in turn is broadcast out to all our render nodes. Each frame is tagged

Re: [osg-users] Swap Groups

I tried playing around with the different threading modes, I was only get this to work in single threading mode. I also get periodic hangs, I seem to drop 1 frame every second or so. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=58369#58369

[osg-users] Swap Groups

I am having a problem with setting up swap group using OSG 3.2 on windows 7. I am running the program on a system with 2 Quadro K5000s, with a sync card. I am setting the swap group to 1, and setting swapGroupEnabled to true for the graphics context traits. I have a single graphics context with