Texture Projection Node acting weird on Opacity Channel :(

Mon Jul 10, 2017 7:32 am

I usually hook up textures to diffuse channel to better see the effect of texture projection and then I switch it to Opacity Channel. But the effect is not same. The projection scale have weird results, Even the opacity channel is not taking World space into account. WHY ? am i missing something here ?

Mon Jul 10, 2017 7:46 am

There seems like the connection between texture projection node and opacity channel is broken. It seems fine with diffuse channel, bump channel. :'(
Please help !!

Mon Jul 10, 2017 7:08 pm

Hi Aoktar,
Please help. I'm stuck in the middle of a project. Is there any alternative way to use a texture file in opacity channel to get in world space?

Mon Jul 10, 2017 9:03 pm

I'm not seeing any discrepancy on when I test a basic scene.
Do you see the same results if you load this file?
Can you post a simplified version of yours or some screenshots?

Tue Jul 11, 2017 6:46 am

sagun wrote:Hi Aoktar,
Please help. I'm stuck in the middle of a project. Is there any alternative way to use a texture file in opacity channel to get in world space?

I'm away for this week. Please make test scenes from zero and check

Thu Jul 20, 2017 4:07 am

Hi everyone,
Thank you for your replies and test scene file and sorry for late response since I got very sick.

I now think there are some problem with my setup or something else. Please check my scene files attached. So far, it's behaving correctly in the plane but it's giving problem with a cube.

Attached is a screenshot too.

: screenshot

Scene files:

WorldSpace.zip: scene files; (1.05 MiB) Downloaded 105 times

Looking forward to your help
Thank you !!

Fri Jul 21, 2017 10:51 am

Hi,
Still waiting for the solution. Have anyone got chance to look into this problem ?

Thanks,

Fri Jul 21, 2017 3:59 pm

I don't know how to track down the root cause, but it seems to me to be related to the selection tag.
if you invert it i.e. apply your transparent material to the whole object, and then select the sides / bottom, and apply your diffuse material to that, you get the results I think you're looking for.

Fri Jul 21, 2017 11:40 pm

sagun wrote:Hi,
Still waiting for the solution. Have anyone got chance to look into this problem ?

Thanks,

You'll get automatised mixed materials when you use any textures in opacity slot for stacked materials. Here what you're getting. And plugin creates some internal transformation/projections for you and overwrites the opacity texture's transformation/projection. So this is the reason why your creation doesn't looks like you expected. Solution is that don't use Texture Projection in imagetexture.

Sat Jul 22, 2017 12:12 am

"Solution is that don't use Texture Projection in imagetexture"
How's is this a solution ? I need the texture to appear as the object scales up but not squeezes out as you can see in the sample file. I have to use world space coordinates for this purpose. How can I achieve the same effect without using Texture Projection node ???