alt Hacker NewsThat’s not the slow part. The slow part is moving any data at all to the GPU - doesn’t super matter if it’s a megabyte or a kilobyte. And you need it there anyway, because that’s what the display is attached to.
Now, the situation is that your display is directly attached to a humongously overpowered beefcake of a coprocessor (the GPU), which is hyper-optimized for calculating pixel stuff, and it can do it orders of magnitude faster than you can tell it manually how to update even a single pixel.
Not using it is silly when you look at it that way.
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Sure, use it. But it very much shouldn't be needed, and if there's a bug keeping you from using it your performance outside video games should still be fine. Your average new frame only changes a couple pixels, and a CPU can copy rectangles at full memory speed.
I'm kinda weirded out by the fact that their renderer takes 3ms on a desktop graphics card that is capable of rendering way more demanding 3D scenes in a video game.