Sorry if someone has already posted on this but if so, I can't find it. Below is my configuration. Apparently I can't change the hardware acceleration anymore but everything is working fine in Affinity Photo Version 1. In version 2.1 (I think it actually started in 2.0) if I open a photo, apply a Brightness and Contrast Adjustment and change it dramatically like full brightness, then I Invert it with command-i, and select the paint brush (command-b), change the color to white, and it does absolutely nothing. I can change to the pixel brush and it erases the top layer as it should. I can do the same exact thing in V1, with the same photo and it erases the upper layer as it should.
MacBook Info:
Processor: 2.6 GHz 6-Core Intel Core i7
Graphics: Intel UHD Graphics 630 1536 MB
Memory: 16 GB 2667 MHz DDR4
OS: Ventura Version 13.3.1