Completed strokes are now rendered to a backing bitmap at the view's
pixel resolution. The bitmap is only redrawn when strokes change or
zoom/pan changes. During active drawing, onDraw just composites the
cached bitmap + the in-progress stroke, eliminating flicker from
re-rendering all paths every frame.
Unlike the earlier 1/4-resolution bitmap that caused blur, this one
uses full screen resolution with the view matrix applied, so strokes
remain pixel-perfect.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Kyle Isom
a10d7febf9