[Bug 36236] Problems with lights in Trine game from www.humblebundle.com

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=36236

--- Comment #28 from Christoph Bumiller <e0425955 at student.tuwien.ac.at> 2011-04-20 09:08:51 PDT ---
Now it become easy to fix, it seems that
TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS is set when it shouldn't be, the game
looks fine with llvmpipe if I make it ignore this property.

The nv50 and nvc0 drivers never cared about it and just assumed (had to,
actually, the assumption was added when
TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS didn't exist yet) that if multiple
colour values are written, the render targets are supposed to receive separate
values and not just colour 0.

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