Hi. Thank you for the response. Fast math is disabled already :( I'll try to create a sample project and post feedback.
adevaykin
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
From
Karlsruhe, Germany
Post
Replies
Boosts
Views
Activity
Basic repro case based on CPU-GPU-Synchronization sample does not have this problem "unfortanutely". This is probably a combination of multiple factors that cannot be that easily recreated in a sample project because, well, our code base is big and lots of Metal features are used for every frame it renders.
I'm afraid I can't even share binary right now :(
New detail: sending these values further to fragment shader AND writing them to an attachment (did it to verify deugger is sane first) leads to correctly working render pass as if those values were extracted correctly. But debugger still shows them like on the screenshot - mostly zeroes.