[Bug 43781] FPS drops, apparently matching with d3d_shader traces

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=43781

--- Comment #7 from Henri Verbeet <hverbeet at gmail.com> ---
It's mostly that doing a good job of compiling complex GLSL is expensive, and
draw-time isn't the ideal time to do that. Unfortunately it's not always
possible to do it at any other time. The shader cache is in fact intended to
mitigate that problem, but it only helps for shaders the driver has seen
before. I.e., it should improve the experience the second time you encounter a
particular scene in a game, but the first-run experience is still going to be
poor.

There are a few things we could pursue on our side to improve things, but
unfortunately none of those are particularly easy.

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