Wrap attribute doesn't work on projection node

[bigbossfr]

Hi,
Here a sphere with a planar projection :


Here the render :


If i disable the "wrap" attribute on the projection node, im ust have this :




But it doesn't work with Vray.

This option is great to merge other camera mapping.

Thanks.

Edit : it is working, but we haven't an option in maya like : "remove backface pixels", "angle threshold", etc etc (for all projection (spherical, perpective, etc etc)).

[bigbossfr]

Currently it is impossible to merge multiple cameras/spherical mapping, or i don't know how to do with Vray.
I tried to use "facing ratio" on different cameras, it doesn't work, because for example, the facing ratio of the ground behind objects is not black.



I project many baked textures (shadows/diffuse) in spherical mode everywhere in the scene (accelerate render speed).

What is the solution with Vray ?
How can i merge multiple sphericals projections ?

Or perhaps create something specially for camera mapping ?

Thanks.

Edit : wait, i have perhaps a solution, i will test.

[bigbossfr]

No solution found.
We need somethong like Per Pixel Rendering for multiple camera mapping, remove "back faces pixel" by projection, angle threshold, etc etc...
I don't found the good workflow.

Edit : ahah, just see we have some Vray attributes in the projection node for backfaces... My brain is tired.
I will test.

Edit2 : "ignore back faces" and "ignore occluded" attributes doesn't work with spherical projection.
Is it possible to fixe this please ?

Or : if i set the projection to "perspective", and if i add "camera attribute" to my "camera projection", with type to "spherical", my projection is not spherical, it disappears !
Perhaps fix this ?

But we need a per pixel rendering. I don't know how to setup something like when the render camera choose the good projection.
We "ignore back faces" and "ignore occluded", i see some faces on the side, it is not "clean". Looks like a must to subdivise my mesh a lot.
Mental have this :



What about Vray for Maya ?

[vlado]

For the moment, it would be fastest/easiest for us to fix the projection for a spherical camera, but I don't know if this is what you need - I'm somewhat confused by the posts.

Best regards,
Vlado

[bigbossfr]

The big problem is i have no idea how i can merge multiples cameras mappings in Vray for Maya (i want : when i render, Maya/Vray will choose per pixel the best camera mapping (less stretch, best camera map resolution....)).
I sent you an email with the explanation of the problem.
The email is more clear and explain the technique.

This problem is very important.
The projection with spherical camera is not a big problem because i can use spherical projection and mix with a perspective projection (to use "ignore back faces" and "ignore occluded").
But merge multiple cameras mappings is a big problem.

[vlado]

Did you send the email? I don't have anything yet.

Best regards,
Vlado

[bigbossfr]

I have resent the email.

[vlado]

Thanks, I got it this time.

Best regards,
Vlado