On the whole I am satisfied with the OpenGL performance, especially on my intel machines (Win/Mac)
But I noticed small hiccups (maybe one or two in a second) on my MacBook Air1 M1 with an external monitor. (Also in my standalone app, native ARM)
The hiccups (I guess a ca. 1/10 second long) i also see in the teapot-demo from the DemoRunner (Release mode / ARM /profiling)
During profiling I couldn’t find a particular hotspot, but I noticed that other OpenGL applications can run smoothly on current Apple M1 hardware.
I wanted to ask carefully, is there perhaps room for improvement here? Just a shot in the dark: can it be that the openGL thread is not running on the m1-performance cores, or switches back and forth. (Apple Developer Documentation). Or is there something different which can be improved?
I benchmarked the OpenGLDemo also on an M1 Air and an external screen.
Over the course of 30 seconds I had 6 groups of frames missing the 144 Hz frame timer and at most 2 frames were missed in a row.
Is this in line with your experiences or are they markedly worse than this?
I’m sharing a patch that I used, which adds an FPS counter and a “Run benchmark” button to the OpenGLDemo. The benchmark saves the frame times into a .txt file.