Desktop compositing latency is real

Re:Desktop compositing latency is real by Const-me on Wednesday November 22, 2017 @08:17AM (#15756509)

I think it’s only that complex and taxing for GUI frameworks that mix CPU and GPU rendering. Like Win32 GDI or GTK+.

For modern GUI frameworks that were designed for GPU, like MS WPF/XAML or Mozilla WebRender, overdraw just use some GPU resources, but that’s it. GPUs are designed for much more complex scenes. In-game stuff like particles, lights, volumetric effects, and foliage involve tons of overdraw. In comparison, a 2D GUI with overdraw is very light workload for the hardware.

[ Parent | on HN ]

Re:Desktop compositing latency is real by pcwalton on Wednesday November 22, 2017 @11:27AM (#15758052)

Overdraw actually matters quite a bit for integrated GPUs, especially on HiDPI. On high-end NVIDIA or AMD GPUs, sure, 2D overdraw doesn't matter too much. But when power is a concern, you don't want to be running on the discrete GPU, so it's worth optimizing overdraw.

[ Parent | on HN ]