Draw binary color chart on low memory mcu

[zhangzqs]

I want to draw a chart on a low memory microcontroller using a software renderer. Since the software renderer doesn't support Path so I tried drawing the chart to a memory framebuffer and loading it via a slint Image component, but there wasn't enough memory. In fact, my chart is just a binary color, and there is no need to use RGB or RGBA8 buffer to occupy a lot of unnecessary memory resources. Is there any way to optimize?