Computes one high-precision reference orbit on the CPU and iterates only the tiny per-pixel offset from it on the GPU — the standard trick for zooming past float32's ~10⁶× wall. Double-double precision holds up to roughly 10²⁸×. Double-click while enabled to dive precisely; typed coordinates are still plain-precision.
Surface
Colour
View
Drag to orbit · wheel/pinch zooms the camera · right-drag/two-finger drag pans.
Double-click/tap the surface to recenter the fractal there and zoom in.