Depth texture support - let's collect the games (and GE dumps if available)

[hrydgard]

Some games use depth buffers as textures, generally through CLUT16 or CLUT32, so they can look up the depth value in a palette to perform various effects like custom fog, depth of field etc.

Usually they access the depth buffer through address 0x042xxxxx - that 2 tells the memory controller to swizzle around the data from the depth swizzle to the texture swizzle - so these accesses are actually quite quick to detect.

I plan to add support for this, so let's collect the games that do this - ideally by linking to an issue that has GE frame dumps.

• Me and my Katamari: Me and My Katamari Visual Bug Background #6411 (fog effect)

• (probably) Silent Hill Origins/Shattered Memories: silent hill shattered memories, the torch does not shine the road. #6265 (very tricky shadow mapping)

• Gensou Suikoden: Gensou Suikoden blur screen #5205 (depth of field) (no GE frame dump)

• Kurohyo 2: Kurohyo 2 missing blur effect in battle #8390 (depth of field) (no GE frame dump). Also Kurohyou Ryu Ga Gotoku Shinshou (Yakuza) - No clipping of 3d characters behind backgrounds based on depth within screen. #9576 which is a different depth buffer trick.

• Silent Hill Zero? Silent hill zero part of the body disappear #8497

• Prince of Persia: Revelations: Prince of Persia Revelations title screen graphic issue #6423

• NEW: Harry Potter and the Order of the Phoenix: Harry Potter and the Order of the Phoenix graphical problem since v1.10.3-352-gd90630c26 #13621 (depth fog)

• NEW: Ford Bold Moves String search for CtrlMemView #12994

• [Android][OpenGL][Graphic issue] Muso Orochi 2 Special (ULJM06097) 無双OROCHI2 Special #12626 ?

One complication is that we remap the depth buffer a bit through the projection matrix (to simulate some kinds of clipping and precision). To read back values, we need to run them through the inverse function before we use them.

[Panderner]

How about Ford Bold Moves Street Racing Fog Effect? (#12294)

(Edit: #13262 fixes fog graphic issue for Vulkan but not OpenGL)

[hrydgard]

I am not sure about that one - it could be one, haven't investigated yet. But thanks for the reminder.

[DonelBueno]

I don't think this is related, but maybe it is: #10229

[hrydgard]

Not likely, but it's also a depth problem indeed.

[nassau-tk]

Can I do an amateur question?

Briefly speaking, if something in which drawing before and behind the object isn't right is found, should it be reported?

[hrydgard]

@nassau-tk If it renders wrong, it should be in an issue. Whether it belongs in this one or not is hard to say though - show some pictures.

[nassau-tk]

@hrydgard

Thank you for teach for me!
Please,see attached screenshot and dump.

[Minna no Sukkiri (Eng:Everybody Stress Buster)]
UCJS10094_0001.zip
[Real PSP]

[PPSSPP]

[Maybe,These type dialog are drawing with blur processing on background.]
These dialog are "Autosave warnig".

Is this a not related?

[nassau-tk]

@hrydgard

And, #6979 is not related?

[hrydgard]

I'll check the dumps later. It's possible that it's related though would be a little bit surprising if they used depth texturing for simple menu effects. Could also be some other kind of bug.

[nassau-tk]

Related #12626

[Panderner]

• NEW: Ford Bold Moves String search for CtrlMemView #12994

@hrydgard It's #12294 not #12994

[Panderner]

Current status of Silent Hill games as we mentioned in #6265 and #8497 in v1.10.3-1459-g678d881a1:

Shattered Memories:

OpenGL:

Vulkan:

GE Dump:
ULUS10450_0001.zip

Origins:

OpenGL:

Vulkan:

GE dump:
ULUS10285_0001.zip

[nassau-tk]

Got a [Depth / Z] label #13950 .

[hrydgard]

Yes, but it's not a depth texture issue.