how to make a Tileable Texture starting from 3D objects

motorsep · December 31, 2015, 8:17am

Wouldn’t texture work better since you could use several textures?

Do you happen to have an example .blend handy ?

MmAaXx · December 31, 2015, 9:09am

I use vertex weight because the realtime feedback and you can use several vertex groups anyway. but you can use what you prefer.
sorry but now Im writing from Ipad., I cant send anything.

cheers.

motorsep · December 31, 2015, 9:30am

Oh, I didn’t think I could do that. I am guessing for finer control emitter has to be be generously subdivided ?

That’s no problem. Holiday season after all I’d appreciate if you could show us how to work with several vertex weights/groups for several particle systems on the same emitter when you have time/at your PC.

Thanks!

motorsep · January 3, 2016, 8:28pm

So I gave it another spin and it doesn’t quite work. As soon as I begin messing with randomness and other settings, tiling breaks.

Here is the setup where tiling doesn’t break no matter what you do

MmAaXx · January 3, 2016, 8:30pm

yes, you have to reload the vertex groups manually… I noticed that too, I also reported the bug.

so using group instance it works… interesting… thanks!

motorsep · January 3, 2016, 8:32pm

What vertex groups? I didn’t see any in your particles example

MmAaXx · January 3, 2016, 9:12pm

yes, sorry, I made a sample file using your instance system + my particle system.

vweight.blend (677 KB)

motorsep · January 3, 2016, 9:29pm

Cool stuff! Thanks.

motorsep · January 4, 2016, 5:20am

Do you know by chance if there is a way to prevent particles-objects from intersecting?

MmAaXx · January 4, 2016, 5:57am

placing them manually

motorsep · January 4, 2016, 8:33pm

So, here is my first attempt:

Now I just need to figure out how to bake AO and normal map, since the scene is soooo heavy that I am not sure I’ll be able to bake to a quad plane (as selected to active).

MmAaXx · January 4, 2016, 10:17pm

coool stuff!!
congrats

check my tutorial for that! I also covered the bake part, hint: I dont use bake. never.

motorsep · January 6, 2016, 7:37pm

Alright, I hit a dead end - I either run out of VRAM and CUDA crashes, or I end up with hundreds of millions polygons and Blender hangs, or I end up with 10Gb OBJ file and run out of HDD space.

motorsep · January 6, 2016, 9:23pm

Finally, decimated to about 1k polys for each rock, and used Cycles on CPU to bake these (had to redo the layout too):

Since polycount of each rock is low, Pointiness attribute doesn’t really do good job. Is there a way to render edges nicely (or curvature map) ?

Thanks!

MmAaXx · January 6, 2016, 11:00pm

coool map, also try to convert particle system into real object, this can save a LOT of memory usage and viewport performace

motorsep · January 7, 2016, 5:27am

Thanks

Actually when I converted it into mesh, I got 34M tris. Times 9 will give so many tris that my PC will choke.

Btw, I managed to render out AOL map with my scene that contains higher poly rocks (each rock is around 15-20k tris). It was slower, but looked better.

motorsep · January 9, 2016, 8:25am

I just realized that my normal maps needs to be +X-Y+Z. How do I adjust normal maps material to achieve that?

Btw, here is in-game look:

MmAaXx · January 9, 2016, 7:32pm

you do it in photoshop or what ever, invert the Green channel

motorsep · January 9, 2016, 7:37pm

I did that in GIMP, but I’d rather not mess with the process. I guess I can just split image into components, invert G and recombine components?

MmAaXx · January 9, 2016, 7:56pm

dont know ingimp, but go to the channel panel, you should have red green blu channels, select the green one and invert the values, (in photoshop is ctrl+i