[Bug 37424] Path of Exile: Graphical Glitches with GLSL Disabled

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=37424

--- Comment #8 from Stefan Dösinger <stefan at codeweavers.com> ---
I haven't looked at the details yet, but my guess is that the game switches
between fixed function fragment processing and pixel shaders without changing
any pixel shader constants at the same time. In the GLSL ffp replacement shader
bump map constants are separated from pixel shader constants. In ARB they share
the same global constant "namespace".

Henri's patch probably doesn't trigger a constant update in this case since it
is not needed in GLSL. If my theory is right the solution may be to trigger a
constant reload in shader_arb_select if the previous draw did not use a pixel
shader, but the current one does, or vice versa. I believe such a reload is
already triggered somewhere, but I can't find it right now.

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