Draw to buffer first then send to display?

[pwolfamv]

First of all, love the driver, it's been a lot of fun working with this. I am very new to micro-controllers and this level of hardware interaction/limitations. I am wondering if it's feasible to write multiple draw operations (fill_poly, fill_rect, etc...) to the buffer before sending the buffer to the display?

As I understand it, this seems to be what the waveshare driver is doing, per their example code. I'm curious if there are hardware limitations or performance reason why you're not using this approach? (or am I just blind and some form of this is already implemented?)

Reason I am asking: I am attempting to draw a UI by layering several drawing operations and, while the rp2040 is relatively performant, you can still see the layers of draw calls as they are rendering to the display.