I would like to be able to select my offline GPU to render Dolphin, as it seems to be significantly faster at that than my primary gaming GPU. I have an Nvidia GeForce GTX 670 which I purchased last year, which seems to perform a lot worse on OS X than on Windows or Linux, while my new Radeon R9 270X manages to run Twilight Princess (GCN) at full speed in most areas. On the other hand, the GTX 670 manages to run games like BioShock Infinite at the High preset at full speed, while the Radeon slows down to a crawl just looking out into the rain in the first scene of the game.
I would like to be able to use my R9 270X as an offline GPU, that is, rendering with no displays attached, to a framebuffer on the GPU which has displays attached. That way, I can hopefully get the best performance out of Dolphin in OS X, while using the GTX 670 for most other games and otherwise mostly using the Radeon for OpenCL processing.
Of course, I suppose this sort of functionality is useless for all other ports, and also useless on real Macs, which usually only have one GPU, or identical GPUs, or a combination of integrated and discrete GPUs where the OS will default applications to using the discrete GPU already.
I would like to be able to use my R9 270X as an offline GPU, that is, rendering with no displays attached, to a framebuffer on the GPU which has displays attached. That way, I can hopefully get the best performance out of Dolphin in OS X, while using the GTX 670 for most other games and otherwise mostly using the Radeon for OpenCL processing.
Of course, I suppose this sort of functionality is useless for all other ports, and also useless on real Macs, which usually only have one GPU, or identical GPUs, or a combination of integrated and discrete GPUs where the OS will default applications to using the discrete GPU already.