If think that the MacOS GUI is actually entirely rendered as a series of PDFs, if I have understood things correctly.
That’s how it originally worked, but Apple has moved away from PDF to other native GPU frameworks for drawing. Now window content is stored as bitmaps instead of redrawing vector instructions.
You have understood things incorrectly.
That’s how it originally worked, but Apple has moved away from PDF to other native GPU frameworks for drawing. Now window content is stored as bitmaps instead of redrawing vector instructions.