Irrlicht Engine

Found the problem!
It was caused by too big, default camera movement delta.
I guess there should be some kind of a formula which would give the maximum possible value for camera movement delta based on terrain scale.

Thanks for the reply, but unfortunately it's not the problem. My znear is very small (like 5 cm), and here the distance from camera to terrain is like 2 meters. Usually if I move forward everything is fine, but when I move backwards sometimes a big part of terrain is not rendered.

Hello.

I'm using Irrlicht FPP camera, but I set camera position manually (because Bullet controlls player's position) via camera->setPosition(). When I move forward everything is fine, but when I move backwards, a part of terrain seems to be not updated properly and is just not rendered (probably ...

Thanks for your answer.

So I disabled shadow volumes, but unfortunately the problem is still there.

I set GouraudShading to true for all model's materials.
I replaced directional light with point light, to make sure it's not caused by bugged OpenGL directional light.
I tried recalculating normals ...

@Foaly
Wow! It worked!
Thank you very much, you're awesome

Thanks CuteAlien.

I opened it in mview.exe and it indeed had the same artifacts as in Irrlicht, so from now on I guess I'll have to ask on Blender forum.

Without animation I get a correct model, with animation I get currently nothing (meaning no model shows up in Irrlicht althought it seems to ...

But how? In Blender everything looks fine. In Irrlicht I used setPosition() on whole node, and new position is set correctly, except feet have some offset relative to the body position.

I see the bug, but don't seem to have an .X exporter in Blender. Where did you get yours from?
Blender does have a .x exporter but it's not enabled by default. You have to enable it in File->User Preferences->Addons->Search for "directx"

edit: If you still have a dxviewer from old Microsoft sdk ...

Hello.

I exported this model using Blender to .x file:
blend: https://dl.dropboxusercontent.com/u/12301540/misc/zombie.blend
x: https://dl.dropboxusercontent.com/u/12301540/misc/zombie.x

With the following export options:
http://img713.imageshack.us/img713/3366/7gj9.png

But I'm getting this ...

Thanks.

I tried setting lower 'infinite' value passed to createShadowVolumeSceneNode() and it fixed the problem.

These shadow volumes are extremely slow though, I use 16 vertices shadow mesh and for like 10 meshes the framerate drops significantly, so I guess shadow volumes aren't very useful ...

Nice, thanks alot.
I have another problem but I'm not sure if I should start a new thread.

I'm using shadow volumes, and I add volume nodes like this: node->addShadowVolumeSceneNode(mesh);

Usually everything looks OK:
http://i61.tinypic.com/ip33ww.png
But at some camera angles, if I move camera ...

Thanks. Changing light direction indeed solved the problem. But it's still worying that there are some angles at which sharp edges occur - I'm not using flat shading so it should never occur, should it?

Is it better (or faster) to write custom per-pixel shader for directional lighting?

Hello.

I added directional light like this (OpenGL driver):
irr::scene::ILightSceneNode* pLight = sceneManager->addLightSceneNode();
irr::video::SLight & l = pLight->getLightData();
l.Type = irr::video::ELT_DIRECTIONAL;
l.AmbientColor = {0.3f, 0.3f, 0.3f};

This is how my model looks from 1 side ...

Ok. Thanks for answers.

I'd really like to keep the smoothing factor, since I need this in my project too. Otherwise terrain is too bumpy.

@ralian I'd also be very happy if you could fix this bug.
The problem seems trivial, but in my case it's very problematic. As I said before, I can't scale the ...

Hello. I read somewhere that Irrlicht terrain scene node has exactly the same size in units as height map texture used to generate the terrain. However, it's not true in my case.
I'm using code from this example: http://irrlicht.sourceforge.net/docu/example012.html
And I changed terrain scale to 1 ...