The complete pixmap is always kept in Firefox's memory while one subpixmap is generated and sent to X for each destination rectangle. These subpixmaps do not trash the original pixmap and are only used for painting in X.
The complete pixmap is always kept in Firefox's memory while one subpixmap is generated and sent to X for each destination rectangle. These subpixmaps do not trash the original pixmap and are only used for painting in X.