Metal Desktop Renderer draws a black pattern on some devices

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1

Hi everyone,

A project using Metal Desktop Renderer draws a black pattern on some devices.

282317-metaldesktop-ios12.jpg
282317-metaldesktop-ios12.jpg2048×1536 196 KB

To illustrate this issue, I generated a project from the Rolling template targetted Mobile / Tablet.

Project Settings > Platforms > iOS > Rendering:

  • Uncheck Metal Mobile Renderer
  • Check Metal Desktop-Forward Renderer
  • Select Metal v1.2

I checked it on several iPads (iPad Air 2, iPad 5th, iPad 6th) and iOS versions (11, 12). It seems to occurs on iOS12 but not on iOS11.

Is there anything I can do to fix this issue?

Thanks

2

The situation changes slightly with Metal v2.1 (UE 4.22). This does not occur with meshes that do not move. This occurs for moving meshes.