GS/HW: Support alpha in RT concurrently with Z

[stenzek]

Description of Changes

Currently, PCSX2 removes any Z targets when you write to the RT at an address, or vice versa. Hence the gross CRC hack for Getaway. Let's get rid of that, which also fixes a bunch of other issues.

• Fixes lens flare and DoF in True Crime: NYC.
• Fixes reflections in Eragon.
• Fixes floor in Area 51.
• Fixes flickering in Transformers.
• Improves fog effect in Forgotten Realms - Demon Stone.

Rationale behind Changes

Fixes lens flare noted in #8242.
Gets rid of 1/4 of the remaining GSCrc entries.
Fixes #3986.

Suggested Testing Steps

Test affected games.
Make sure DBZ BT2/3 didn't take a non-trivial speed hit.

Changes (before, after)

(needs high blending for fog wall)

[F0bes]

Can someone check if this issue is fixed as well?
#7181
https://github.com/PCSX2/pcsx2/files/9776070/KatamariDamashii_SLPS-25360_SpeechBubbleTextRenderBug.gs.xz.gz

[kamfretoz]

Can someone check if this issue is fixed as well?

[stenzek]

Smells like an invalidation issue, it should be reading from local memory, not the FB.

[kamfretoz]

Smells like an invalidation issue, it should be reading from local memory, not the FB.

Is it similar/related to #9004 ?

[stenzek]

Keroro's a bit more complex (target size/format changes, I forget which), but at a high level, yes.

[refractionpcsx2]

Keroro's a bit more complex (target size/format changes, I forget which), but at a high level, yes.

yeah they change the width of the FB with the font in the alpha (still at the old width)

[stenzek]

Rebased, all known regressions fixed.

[JordanTheToaster]

Fixes DBZ BT3 depth garbage.
BestGame.zip

Master:

PR:

[lightningterror]

And how did it look before?

[JordanTheToaster]

And how did it look before?

Updated now with pictures.