On 16/07/18 23:18, Jim Nagel wrote: > Trying to learn stuff from http://php.net is so painful on NetSurf > because any page from the site takes ages to load and a further age to > scroll. (Using #4342) > > I'm curious about the mechanisms involved. Any wisdom, please?
It's because of this SVG being used as a tiled background on the HTML element: http://php.net/images/bg-texture-00.svg Since its an SVG it bypasses all the optimisations we have for tiled bitmap redraw. It also isn't a filled rectangle, its just strokes, so it doesn't get "knocked out" by our normal rendering optimisations. Finally it uses opacity, which wouldn't help either, although I think we ignore that anyway for now. It could potentially be optimised by pre-rendering it once to a bitmap, but it would be a fair amount of effort for what is a pretty uncommon case. For now, I'd try just toggling background images off in the menu for that window, and forcing a redraw (F12, Return). http://www.netsurf-browser.org/documentation/guide.html#BrowserWindowMenuDisplayImages Hope that helps, -- Michael Drake https://www.codethink.co.uk/
