irrb 0.4 (Blender Exporter)

sudi · Post by **sudi** » Tue Mar 03, 2009 4:59 pm

actually this lightning problem only applies when using the fixed render pipeline. or vertex light calculation in your shaders.

afecelis · Post by **afecelis** » Tue Mar 03, 2009 5:00 pm

Great, bitplane!
I had almost forgotten of your nice explanations!

I guess the conversion is done then when exporting from blender to irrb, no matter how our model is created.

Yet I find it awkward that blender is not capable of calculating the UV pack if the model is triangulated

Thanks a lot.
regards,
Alvaro

pc0de · Post by **pc0de** » Tue Mar 03, 2009 6:37 pm

gandolfix wrote:To small worlds it ok. But... if I create UV texture with bake, I create only 1 texture, then if I have a big world, I cant use only 1 texture...

Glad to see you got it working. Regarding your concern about only baking a single texture - A single mesh may be assigned up to 16 procedural materials (see Multiple Materials). This means you can effectively UV map, bake, and export up to 16 textures per mesh. And after all of that is done, you can optionally separate sections of the mesh (split into multiple meshes) to aid in frustum culling.

afecelis wrote:I didn't know texture blending was possible! Irrb surprises me by the minute!

That's all magic done by Blender, irrb just exports the resulting texture.

afecelis wrote:quads & tris

As bitplane suggested, irrb automatically converts quads to tris when necessary. When I converted your mesh to tris in Blender (CTRL-T), it automatically updated the UV map. However, when I tried to redo the UV Unwrap, I had to kill Blender after 10+ minutes of waiting. Must be a bug in Blender.

afecelis · Post by **afecelis** » Wed Mar 04, 2009 1:52 pm

However, when I tried to redo the UV Unwrap, I had to kill Blender after 10+ minutes of waiting. Must be a bug in Blender.

I thought so.

I also tried to export the following scene (b3d version):

And got the following error message:

It seems similar to the polycount limit in the 3ds format. Is there such a limitation in irrb?

regards,

Alvaro

pc0de · Post by **pc0de** » Wed Mar 04, 2009 2:43 pm

Yes, currently irrb imposes the 64k vertex per mesh buffer limit. I guess I could update irrb to programmatically split the buffer and issue a warning, but I'm not sure this is the best solution.

Please have a look at this old thread and let me know what you think: 32 bit indicies patch for the 1.2v...

hybrid · Post by **hybrid** » Wed Mar 04, 2009 4:14 pm

Oh, we have 32bit indices already in Irrlicht 1.5...

pc0de · Post by **pc0de** » Wed Mar 04, 2009 6:44 pm

So if I update irrb to allow a meshbuffer to contain more then 64k vertices, then CIrrMeshFileLoader will need to be patched to use CDynamicMeshBuffer or CMeshBuffer based on <indices indexCount="x">. Correct?

hybrid · Post by **hybrid** » Wed Mar 04, 2009 8:25 pm

Yes, something like that.

gandolfix · Post by **gandolfix** » Thu Mar 05, 2009 5:26 pm

Hello!!

This is my first scene using this very nice tool irrb.
It's for a Bocce game.

Tranen · Post by **Tranen** » Fri May 01, 2009 4:21 pm

Hi i receive an error when i simply try to change the path of the relative base. I select the field, and even if don't change the path when i leave the field (for example if I click on Scene Directoy) I receive an error "Python script error, check console. Here is what is written on the console:

Traceback (most recent call last):
File "C:\Documents and Settings\User\Documenti\Librerie\blender-2.48a-windows\
.blender\scripts\irrbmodules\iGUI.py", line 569, in buttonEvent
tempDir = checkDirectory(bBaseDir.val)
File "C:\Documents and Settings\User\Documenti\Librerie\blender-2.48a-windows\
.blender\scripts\irrbmodules\iGUI.py", line 492, in checkDirectory
os.makedirs(tempDir)
File "C:\Documents and Settings\User\Documenti\Librerie\blender-2.48a-windows\
python25.zip\os.py", line 166, in makedirs
WindowsError: [Error 183] Impossibile creare un file, se il file esiste gi: 'C:\
\Documents and Settings\\User\\'

"Impossibile creare un file, se il file esiste già" means "unable to create file because file already exists"...

Can you help me?
Thanks

pc0de · Post by **pc0de** » Fri May 01, 2009 4:54 pm

Hello Tranen, replace your existing "iGUI.py" located in (C:\Documents and Settings\User\Documenti\Librerie\blender-2.48a-windows\.blender\scripts\irrbmodules\) with this one:

http://tubras.googlecode.com/svn/tags/irrb-0.3/trunk/tools/irrb/irrbmodules/iGUI.py

Let me know if you still have problems.

erwincoumans · Post by **erwincoumans** » Mon May 04, 2009 10:37 pm

hybrid wrote:Oh, we have 32bit indices already in Irrlicht 1.5...

I had a similar problem, but I could only find the 16-bit indices version of 'drawIndexedTriangleList' (using the CSampleSceneNode of 03.CustomSceneNode). How can you use 32bit indices?

Thanks,
Erwin

hybrid · Post by **hybrid** » Mon May 04, 2009 11:22 pm

You have to use a special meshbuffer, CDynamicMeshBuffer.

3DModelerMan · Post by **3DModelerMan** » Thu May 07, 2009 1:56 pm

Can I import .irr scenes into irrb? I have one that I want to lightmap made in Irredit.

pc0de · Post by **pc0de** » Thu May 07, 2009 4:03 pm

Sorry, but irrb only _exports_ scene & mesh data.

Irrlicht Engine

irrb 0.4 (Blender Exporter)

Re: texture transition

scene

Import?