This extension fetches the current GPU timestamp from the hardware, just like the OpenGL API glGetInteger64v(GL_TIMESTAMP, ×tamp) function.
I need this to correlate GPU and CPU timestamps for the GOOGLE_display_timing extension, but I think it will be useful for applications as well. I'm not sure this is exactly the API we need for this; it might be better for it to return *two* timestamps, a GPU and a CPU one which were as closely correlated as possible down in the kernel. The kernel APIs that this calls on anv and radv don't do that, so I didn't want to pretend to offer functionality I couldn't actually supply. Suggestions on what to do here are welcome! -keith _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
