Games created by GameMaker modify the FPU control word to enable
division by zero exceptions. The game Risk of Rain, which is written
with GameMaker, furthermore sets fogstart == fogend, which triggers an
exception when the GL driver attempts to calculate 1 / (fogend -
fogstart). This test adds some evidence that we are not supposed to
temporarily restore the FPU CW if D3DCREATE_FPU_PRESERVE is used.

Based on a patch by Patrick Rudolph.

Based on a patch by John Reiser.

Spotted by Christoph von Wittich.

Spotted by Christoph von Wittich.