Write into frame buffer directly

[yshui]

Using PicoGraphics::pixel seems to be very slow. The fact inky is able to display jpeg images at reasonable speed makes be think the bottleneck is probably the ffi calls one byte at a time psram writes. Is it possible to dump a buffer directly at the frame buffer?

I was trying to render a color gradient with manual dithering (because i don't like the default dithering patterns).

[yshui]

Oh, and what I have is a inky frame 7.3, so no memoryview for me.