This allows unwinding from a crash inside the function.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53614Signed-off-by: Gijs Vermeulen <gijsvrm@gmail.com>

Msvc does not support it.

Fixes building tests in Visual Studio with msvc's own crt headers.

Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>

Dual source blending implies an additional shader output, which needs to
be declared. This improves WoT on high graphics settings on MoltenVK.

And release it on Close.

Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>