This instruction is similar to the FSETP instruction, but it doesn't set a predicate, it sets the destination register to 1.0 if the condition holds, and 0 otherwise.

This is based on research from nouveau. Many things are currently unknown and will require hwtests in the future.
This commit also stubs QueryMode::Write2 to do the same as Write. Nouveau code treats them interchangeably, it is currently unknown what the difference is.