DoK for Mac doesn't render anything 3D in 1440x900 resolution

Reproduction:

Default settings.
Started Campaign Tutorial.
I only see UI elements (mission messages, triangle markers), but none of the units nor the terrain: i.e. 99% black screen.
Audio working fine.

How comes? Is a patch underway to fix this graphics issue?

MacBook Pro (15-inch, Mid 2012)
2.3 GHz Intel Core i7
Intel HD Graphics 4000 1536 MB
El Capitan 10.11.5

Same issue filed at https://steamcommunity.com/app/281610/discussions/0/351660338729439176/ as well.

This may be a problem.

Turn off all 3rd party overlays and turn off AA.

The Intel HD4000 shouldn’t be a problem as I use it fine on my windows laptop.

I figured it out — my download was corrupted before it could complete

Right-click the Game > Properties > Local Files > Verify Integrity of Game Cache.

Steam then scanned the files and found some files missing. It re-downloaded those missing assets. When it got to 100% again I ran the game again and it was fine.

TBH I was quite amazing that the game ran at all without key assets!

Hope this helps someone.