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Phantasy Star rendering issue, probably Z-buffer precision #10710

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mlwj1993 opened this issue Mar 11, 2018 · 4 comments
Closed

Phantasy Star rendering issue, probably Z-buffer precision #10710

mlwj1993 opened this issue Mar 11, 2018 · 4 comments

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@mlwj1993
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mlwj1993 commented Mar 11, 2018

What happens?
Model / texture on boots of character gets overlapped by leg model / texture
improperly rendered

What should happen?
Model / texture of boots should be rendered on top of the legs texture.
properly rendered
(it renders properly on character select screen)

What hardware and operating system are you running PPSSPP on? GPU might matter if it's a graphical issue.
Windows 10 Home 64 bits (10.0, build 16299).

Intel core i7-6700HQ @2.60 GHz (8 CPU's)
Intel HD Graphics 530
Nvidia Geforce GTX960M (Geforce game ready driver 391.01)

Happens in PPSSPP Build 1.5.4-657-g3c16f8437 (Dev Build), Works fine on latest stable release (1.5.4)
Forgot to note this happens independent of Rendering backend

@mlwj1993 mlwj1993 changed the title Texture Rendering Issue Model / texture Rendering Issue Mar 11, 2018
@unknownbrackets
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This might be related to the depth hacks for Phantasy Star Portable.

-[Unknown]

@hrydgard hrydgard changed the title Model / texture Rendering Issue Phantasy Star rendering issue, probably Z-buffer precision Mar 12, 2018
@mlwj1993
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After looking into it further it might also be just a gamebug. Since the character wasn't wearing anything in the pants slot that happened, after putting something in that slot the boots render normally.
Too bad my PSP died on me so I can't really check if it does indeed do that on a real psp as well...

@ghost
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ghost commented Dec 8, 2022

Might improve this now after #16504

@unknownbrackets
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I think it's likely this is fixed. If it's not, a GE frame dump would be very helpful to confirm against a PSP. It may in fact be a game bug as noted if it's not fixed now.

Given that, I'm going to close this. If you're still seeing it in a recent git build, please add a comment (ideally with a GE frame dump.) If it's another depth issue in this or a different game, better to create a new issue.

-[Unknown]

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