Can you recommend, according to personal experience, a GUI and drawing library that works on top of a framebuffer, please? Theoretical knowledge is not interesting.
So far I have avoided writing my own drawing library or buying any ready-made GUI library, but I am new to the graphics on microcontrollers and thus the question.
The framebuffer requirement comes from the fact that I have been able to achieve 30Hz refresh rate (out of theoretical maximum 35Hz) over SPI on this nice OLED display:
and thus I see no reason to use acceleration features of this OLED driver.
Live video display is of special interest, otherwise my needs are very basic (lines, text display).
Thank you for your time. All answers will be very much appreciated.