[Nouveau] [Bug 91526] World of Warcraft (on Wine) has UI corruption with nouveau

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91526

--- Comment #11 from Ilia Mirkin <imirkin at alum.mit.edu> ---
FTR, in the trace, things go wrong between call 722316 and 722358. In the
middle, a SRGB8_ALPHA8 texture is created, and receives an upload from GL_BGRA
+ 4_4_4_4_REV data. According to qapitrace, that data is not properly reflected
in the texture.

Running this with llvmpipe, the first glTexSubImage2D clears the data (all 0's)
while the second glTexSubImage2D uploads the font. Since the font texture
contains garbage, so does the remaining rendering. Need to figure out why the
texture upload fails with the data in question.

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