Shadow catcher projection

[Asticles]

Hi all,

Maybe I'm wrong, but cannot make the shadow catcher matches the HDR environment projection. Maybe I'm doing something wrong?

Could be a bug?

Regards

[blanchg]

What might be the case is that I am adding 180 degrees of rotation to the HDR to match the setting in 3ds.  Maybe this isn't added to the shadow catcher?  Can you provide the .blend I don't really know how to use the shadow catcher correctly.

[Asticles]

Yes, hdr is from openfootage.

Edit: File corrected with blanchg solution.

[blanchg]

In the shadow catcher UVMap set the x scale to -1 and leave the environment rotate at 0.

[Asticles]

Yes! this did the trick, I suppose it is something to be fixed?

Thanks

[blanchg]

No it is -1 to match 3ds and I can't make that the default in the uvmap because that would break it in other ways.

Not sure how to fix it. Maybe a default uvmap on the shadow catcher shader...

[Asticles]

Only for Environment projection. In case backplates get mirrored.

[blanchg]

I could create a new Shadow Capture Texture node that has this default.

It is quite difficult to detect this is part of a shadow texture input.

[Asticles]

Don't know which is the best way, of course. As you wish, but I think it's better not to have similar nodes for specific functions. Can this be done within Corona Shadowcatcher node?

Also, as a feature request, It could be great that you can set an image background that does not contribute to Environment, so you can preview and match the shadow catcher without compositing. Maybe on camera settings or on Corona Render settings, where transparent background is selected. Is this possible?.
Another good place could be in Corona Shadowcatcher node, switching something like: Use input for background.

[blanchg]

Sorry no can do with the feature request, you will need to request that Corona support that.  Using the compositor is likely the only way you can do this.

[Asticles]

Okkk Thanks :)