Hi,

The grid artifact you’re seeing looks similar to those produced by additive materials in AR scenes. This happens because, in Unreal Engine, additive materials (materials that add color values rather than replacing them) have nothing to add to if there is no background, resulting in visual artifacts.

Also, remember to set Enable Alpha Channel Support in post-processing to Allow Through Tonemapper, and set the Frame Buffer Pixel Format to FloatRGB in your Unreal Project Settings. You can find detailed instructions here: https://aximmetry.com/learn/virtual-production-workflow/ar-production/aximmetry-de-scene-setup-ar/#scene-settings

I did thats step before asking but nothing change. Follow others projects steps I change in Project Settings > Custom Depth-stencil Pass> enabled with stencil. I dont know if is the solution but works for me. Thanks for your time.  

Hi,

Thank you for pointing out the missing setting regarding the Reflection Catcher. You are correct, the Custom Depth-Stencil Pass must be set to Enabled with Stencil for the Reflection Catcher to work properly.

This requirement was previously included in the general Unreal documentation but was not specified in the AR-specific section. It was later removed from general documentation since other production types do not require it, but the AR documentation was not updated. We will update the documentation accordingly.

Warmest regards,