Hi, since at least 5.1 additive scene capture results in corruption on the render target, seemingly only under the Metal renderer (Windows/DX doesn’t have this issue).
Steps to repro:
- Create a new blank game project, blueprint-only, so the editor loads into the open world map (just so you have something to capture)
- Create a render target with default settings
- Drop a scene capture 2D actor into the scene
- Set the scene capture’s texture target to the render target from step 2
- Mouse over the texture target thumbnail to make it update, you’ll see it looks fine
- Set the scene capture’s composite mode to Additive
- Mouse over the texture target thumbnail again (or open the render target asset) - the texture is now corrupted
I tried to put a bug in about this but the bug reporting system just gave me a spinner for > 5 minutes - so if my friendly local Epic support staff can repro it and put a bug in for me I’d be very grateful!