WebGL Without a GPU

Microlink reduced WebGL rendering time on GPU-less servers from 24 seconds to 6 seconds by switching from Chrome's default SwiftShader software renderer to Mesa llvmpipe, which JIT-compiles shaders to native x86-64 code and utilizes multi-threading. The optimization required one flag change (--use-angle=gl), a virtual display (Xvfb), Mesa built from source, and a verification tool (browserless.report()) to confirm the fast renderer is actually being used.