Tesselated Terrain - Version 1.6 [with download]

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NOTE: This version is outdated, you can find the new version here: https://discourse.panda3d.org/viewtopic.php?f=6&t=16216

This is my tesselated terrain I’ve done in panda3d. The whole terrain is based on shaders, and splitted in four different level-of-details. It still has some artifacts at the chunk / LOD-borders, and the textures will get improved, but I’ll fix that soon. There are currently only two textures, but it is possible to add more if needed …

Video:
http://youtu.be/uf–DnKrJNw

Screenshots:

C421MGj.png796×425

Download version 5 (outdated):
– Seems not to run on ATI cards, see the patch provided by ninth –
https://www.dropbox.com/s/272gr0dl7gfbmoy/terrain.zip

Features:
- Tesselated Terrain (4 Lods)
- GPU Computed, very fast (runs at ~400 fps with collisions enabled, ~500 fps without collisions @ GTX 670)
- Three detailmaps (1 unused yet)
- Heightmap resolution up to 8K8K, currently 2K2K

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Wow that looks really nice! Any plans to share your work?

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Yeah, but I’ll finish the terrain code first. As you might see, there are visible holes between the different lods …

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It’s Really nice!!!

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This is a friendly community so if you will share your source when done, why you don’t do it now and get some help from panda pro?

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Download Link (unfinished & old version): [see above for a newer link]

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Thanks for source sharing :slight_smile:.
I try to run your sample but there is no thing show !!! It said:

:gobj(error): Cg program too complex for driver: /home/anhsaodem/Desktop/tesselated/shader/terrain.cg. Try choosing a different profile.

Some screenshoots.

My System:
AMD Radeon 5470M - With newest AMD Driver
Core i3 330m, 4GB RAM
Xubuntu 12.10 64 bit

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I has same problem when try to push a texture to vertex shader (vshader - Cg) to setHeight for geoMipMap. I try many solution but nothing better.
I try to use glsl (with Ninth’s advise) by and it run.
[url]push texture to vshader sha file]
This my case
http://www.youtube.com/watch?v=7HTEZ_pX0bc

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Try to remove the line “//Cg profile gp4vp gp4fp” from shaders/terrain.cg. It might be your video card does not support this profile …

Edit: Additionally you can try to replace the profile line with “//Cg profile glslf glslv”

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I see some code of your Cg file. You used a texture in vertex shader and it seem not support by my video card and maybe almost ATI video Card. But when use GLSL to process. It’s running normally. I will try to upload Ninth’s code. His code working for all.

Ps. I don’t know which video card you used but 200 FPS is awesome :slight_smile:

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Hehe its a GTX670 :stuck_out_tongue:

Edit: I’ll ask a friend with an ATI Card, see if it runs there …

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UPDATE

  • More Atmospheric
  • Objects at distance get blurred
  • Optimisations (Now runs at ~400 Fps)
  • Changed Heightmap
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That’s looking very impressive! You seem to still have a few minor holes in your terrain, but otherwise it looks very convincing, I do think. :slight_smile:

If I may, the distance blur feels a little heavy to me: I very much like the effect, but think that it might be better if toned down just a little.

Finally, are you slightly desaturating and blue-tinting distant terrain? If not, it might be worth considering – it should increase the verisimilitude of the scene, I think.

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These minor holes you see are between the different level-of-details … i still had no time to fix that :slight_smile:
The distance blur seems a bit heavy, but that’s only the perspective … ingame the mountain you see is about 2km away from you … but i’ll adjust it a bit :slight_smile:
Yeah, something like that:

o_color = (o_color -0.2) * 1.2

But thanks for that hints! :slight_smile:

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My Tobias! Why you no use fog instead blur it !!! With linear fog it will be more beautiful. I sure about that.

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I already use fog, additionaly to the blur :slight_smile: you can see it in the first screenshot … but maybe I will make it a bit stronger …

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UPDATE

  • Added more Fog
  • Decreased distance blur a bit
  • Used some other hints (see posts above)
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More impressive still! :slight_smile:

Forgive me please if I seem nitpicky, but I think that you may have turned up the blue-tinting for distant trrain a little [i]too[i] much. ^^; (Nevertheless, I do think that it’s an improvement over the previous version!)

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Thanks for your Feedback! :slight_smile:

Yeah, I’ll adjust it in the next version … :slight_smile: thanks for that hint, again :slight_smile:

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Video for version 5
http://www.youtube.com/watch?v=d8E_592ydtQ

And Version 6:
http://youtu.be/uf–DnKrJNw