Speed losses on games which are fixed by this PR:
Destroy All Humans is fixed, and the perf loss is about 4%, but we're talking at over 210fps in both cases
Tony Hawk is about 6% but again, we're talking about 250fps here
KoF 94 fixed with about a 3.4% perf loss (but again, like 600fps down to 580fps lol)

Random other game speed losses:
GT4 147 -> 135fps (8.2%)
DT Racer 146 -> 135fps (7.6%)
Driv3r 107 -> 101 (5.4%)
CoD 2 107 -> 100 (6.6%)

NFS MW was identical speeds (within margin of error)

Potential issues to make note of or test things from

Meta: #3692

Individual issues:
#5780
#3496
#3609 (but awaiting feedback on some issues)
#5394
#4116

This Pull Request works just fine with the majority of games I tested on.

However, theoretically, this float->to double approach might not be enough if a game abuse the floating-point arithmetic precision (kind of like what we have on the VUs or the COP1).

I have 2 questions regarding that:

Does the GS have a wider range of floats and/or follow the IEEE 754 standard for this?

And will a soft-float approach, be considered in the future even if, it will likely be very,very slow?

Improves Quake 3
Master:

PR:

Hasbro Family Game Night is also fixed, the game table does not exhibit weird artifacts as seen in the issue report (#2289):

From the report:

With the PR:

@githubribbon45

However, theoretically, this float->to double approach might not be enough if a game abuse the floating-point arithmetic precision (kind of like what we have on the VUs or the COP1).

Not a scenario that exists (explained below)

I have 2 questions regarding that:

Does the GS have a wider range of floats and/or follow the IEEE 754 standard for this?

The GS doesn't use floats, it's completely integer (using 12.4 FIxed integers at most) (except for Q/ST values), we use floats for speed and convenience of interpolating coordinates. However the Q/ST values are generally within a very small range, unless something has gone very wrong.

And will a soft-float approach, be considered in the future even if, it will likely be very,very slow?

No need here because of above.

Sonic Hero's no longer has Z fighting during the opening gameplay.

Ridge Racer 5's shine is back in software mode so #5575 is fixed.

This pr seems to break game "Trapt". Initial screens are not visible in SW mode. Block dump attached.

Trapt (2022-04-09 01-09-40).zip

Trapt should be fixed
Was a preexisting bug that was uncovered by me removing zequal

Fixes Z-fighting in Worms 4 Mayhem. It's more noticeable in battles.

Before:

After:

Confirmed that z-fighting in Shox is fixed

PR:

Master:

Yeah, only SW

cool, thanks for the clarification :)