1604670 - Switch webrender math to use intrinsics

Status: NEW

(Core :: Graphics: WebRender, task, P4)

Description

[Kris Taeleman (:ktaeleman)]

@pcwalton has created a rust math library that uses intrinsics (https://github.com/servo/pathfinder/tree/master/geometry). We should consider switching webrender to it so we get a performance boost.

Comment 1

[Nicolas Silva [:nical]]

I would rather avoid replacing all math types by SIMD equivalents. This tends to generate rather poor code that spends its time shuffling registers. Instead I would prefer that we identify hot arithmetic-heavy pieces of code and SIMDify them at the algorithm level (typically by processing several items at a time).