Which API are you trying to use? Metal? There's a great WWDC on Metal basics that will show you how to render a triangle to the screen if that's all you are trying to do. You can add your particular coordinates to a metal buffer. You can do it without an index buffer for a simple shape like a triangle.

After further testing it seems the commands are being encoded. I can get expected results running simple calculations and reading them back on the cpu. The issue appears to be that the metal frame capture tool doesn’t play well with indirect command buffers leading me to believe the buffer was empty when in fact it was not.

Thanks for the suggestion. I will do so this weekend.

Thanks for the help. Would you mind clarifying what you mean by "dynamic" indexing or pointing me to a resource that might help me understand that distinction better?

Bumping this question now that Apple has announced an M1 Chip in the 2021 iPad Pro. I cannot find any documentation that says the new iPad Pro can run MacOS apps such as Xcode but the device should easily have the power to do so. And with up to 2TB storage, the iPad Pro might be more powerful than the new iMac. Can anyone comment on this now? If the iPad Pro can run MacOS apps in the same way the MacBook Pro can run iOS apps, the new iPad is a totally insane game changer.