1: I can’t understand at which point down the Chunked LOD pipeline that the mesh gets split into chunks. Is this during the initial mesh. Hello, I’m here to ask for help. I have program for terrain editing, but I went into one problem I can’t solve. Between each chunk is crack, how to. Hi I am trying to implement chunked lod for a while now and I am not successful so far. I read the paper about chunked lod and understood the.

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And here is the paper about it if you have never seen it before. Particularly that a lot of the implementation is down to considering the engine’s capabilities. The biggest error is stored in the. And for 3th question I was talking about chunked cbunked.

Level of Detail Experiments

If you can leverage your physics engine to do this then by all means do so, but you really want to think about it more in terms of “distance query” than “collision”. Well, after reconsidering the problem, it seems it is easier to add a ring pod chunk separately, although I’m implementing skirts as a part of blocks but have totally different approach compared to yours, and using no TS. The preprocessed chunk file is about MB if I decimate to within a 4-meter error tolerance Hughes Hoppe’s PM demo of chun,ed same dataset to a 4-meter tolerance takes MB when it’s unzipped, see http: That would work out to about MB.

The downsides include a long preprocessing phase, and some size overhead for the disk file. How does he ensure that or does he just assume that it is like that for simplicity? Please post a new topic. You need x vertices per heighmap chunk in order to divide it into equal tiles 2×2 tiles of x vertices, 4×4 tiles of 65×65 vertices, etc. BT repository at http: Graphics and GPU Programming. At that cost, the benefit over well-estabilished algorithms is not clear to me.


DLL in my path [Tcl8. GPU moves the other vertices produced by it, and you have no fine control over that. The devices I experimented with are the Nexus 5 phone and Nexus 7 Gen tablet. What paper are you reading in particular? My impression is that Chunked LOD gave the best results for visuals and with good enough pre-generation and streaming functions I was able to reach smooth performance on mobile devices.

What is your GameDev Story? In this case would each chunk have a collision bounding box to detect the camera or player is nearby? License All the source code for this project has been placed in the public domain. They do not have to, but it’s convenient if all chunks take up the same amount of space.

And there is my bug result: Oh, sorry about I didn’t mentioned tess. It renders CLOD, with geomorphs, using batched primitives. Last time I moved those objections I experienced consistent fanboyism mainly by a single user, who clearly didn’t read my messages, let alone explain anything.

And as I mentioned before I don’t think there are any resources other than this one for chunked lod technique. So if you can show me some example how to add them I will be glad. This is a common misconception.

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie loxand that your continued use of the website is subject to these policies. Brilliant answer, It’s cleared up a lot of things. It’s very friendly to texture LOD and paging data off disk.

Frame rate is good.

It really depends on the design of your engine. I understand that a Quadtree data structure is used to store the Chunked LOD data, I think i’m missing the point a bit, but Is the quadtree storing vertex and triangles data for each subdivision level? Currently I don’t have any purpose I am just trying to learn some populer techniques about game programming and I have never worked on terrains before thats why I started to learn chunked lod.


As this is also grid there was no reason why not to map it to [-1, 1] coordinates and collapse it into a sphere in the shader. Posted July 21, edited. I already listed three methods in my 1st message. Since summertime ofI’ve been doing some personal research into hardware-friendly continuous LOD. How is the camera distance usually calculated. If you want something BIG and modern I’d suggest taking a look at this: When reading up about quadtree’s, Axis-aligned bounding box’s are mentioned a lot.

LOD chunked rendering

I find the data itself fascinating. Do the chunks calculate the camera distance themselves? All the source code for this project has been placed in the public domain. Is it because there are better ways for large terrains now or it is implemented by commercial products so they don’t want to share their code publicly?

The Industry’s Foundation for High Performance Graphics

At 16K x 16K x 16 bits, the raw heightmap data file is MB. For first I figured out I’ve written something really wrong in my previous message. I think you are over-thinking your distance determination. Are those assumptions correct?

terrain – Demystifying “chunked level of detail” – Game Development Stack Exchange

To dissapear these cracks. These textures are then fetched in the vertex shader and used to displace the height of the vertex.

And now my question