Game Crashes After Changing RenderAPI to OpenGL

An error occasionally occurs after changing the RenderAPI setting from Metal to OpenGL in the game's options.

Unfortunately, the game becomes unplayable. It crashes instantly on load with the following error:

Switching the rendering option to OpenGL causes this crash:

Solution

It's actually very simple:

1. Open the following file in TextEdit: ~/Library/Application Support/Blizzard/StarCraft II/Variables.txt (where ~ is your home directory)

2. Change this line:

GraphicsApi=OpenGL3

to:

GraphicsApi=Metal

3. Save the file, restart the game, and enjoy!

P.S. Thanks to this topic on Blizzard forums for helping locate the settings file.