GPUWhiteboard
Whiteboard
Pan and zoom over a board with no geometry behind it — the dot grid is generated in the fragment shader, so there is nothing to redraw when you move.
GPUWhiteboard — 7 shapeshover a shape
Today: pan, zoom, and exact CPU hover over a static board — shapes forked from GPUAnnotationCanvas, background is a procedural dot-grid with no geometry of its own. Drawing tools, select/move and multi-select are next.