[Bug 26967] Water is black in StarCraft II

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=26967

--- Comment #4 from Stefan Dösinger <stefandoesinger at gmx.at> 2011-05-27 09:08:41 CDT ---
27059 looks like a duplicate. You can revert the patch in your repo, but you'll
probably have to do it manually.

The underlying problem is a multiplication of 0.0 times Infinite. IEEE 754
mandates that this returns NaN. The game expects 0.

Unfortunately we can't realistically catch this in the shader, there are way
too many MULs, DP3s, DP4s and other instructions that multiply two numbers. The
performance impact would be way too high. The only working solution would be to
lobby for an opengl extension, e.g. a "#pragma d3d_floating_point_rules" in
GLSL.

Alternatively we could hope that some future GPUs or Windows drivers start
returning NaN and games get fixed. This happened in the past with other
floating point specialities like RCP 0.0.

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