General question about immediate mode graphics

[NWoodsman]

Hi, I'm considering using SkiaSharp and I have a few general questions about it. It appears that Skia is strictly immediate-mode graphics, as in a pan transform operation requires a redraw call for every pan increment? If that is the case, are single line instructions like drawing a rectangle, are they O(n)? Is there a direct relationship between number of instructions and processor usage? If there are like 20,000 geometries per draw call, will I be able to hit a 60fps target?