[janito]

I'm also curious. From what I could read in the repository's references, I think that the problem is that the GPU is bad at rasterizing small triangles. Apparently each triangle in the fixed function pipeline generates a batch of pixels to render (16 in one of the slides I saw), so if the triangle covers only one or two pixels, all others in the batch are wasted. I speculate that the idea is to then detect these small triangles and draw them quickly using less pixel shaders (still on the GPU, but without using the graphics specific fixed functions), but I'm honestly not sure I understand what's happening.