I get some vr game ideas recently and want to make demos on my mac device using Htc Vive, which is a MacBook Pro 2017 with 16g ram, i7 quad core and gpu of Radeon Pro 560. I have updated the os to Mojave. But after searching for information, I get confused. It seems that I need to buy an extra eGPU to develop VR applications for Htc Vive through Thunderbolt 3. However, I noticed that this eGPU is used to increase the rendering performance. Therefore, if my vr application does not have a heavy graphic task, can I develop Htc Vive VR games on mac without using an eGPU? Or it would be an expensive budge list to develop VR on mac and for demos I don't want to invest a lot. (Sorry for my poor english.