Dante's Inferno: transparent graphics + green line in cutscenes

[Felipefpl]

Game or games this happens in

ULES 01384

What area of the game / PPSSPP

When using dx9, dx11 or opengl i get those transparent graphics in the ground occasionally:

Aside those i also get quick "flashes" where the screen gets dark for 1 second in the opening video in the forest.

I also have a strange green line in the bottom of the screen that flickers, my max resolution is 1600x900, i run the game as 2xPSP with a 960x544 resolution.

PPSSPP reports a Broken_NAN_IN_Conditional in the driver bugs section, the option to find alternative solutions to driver's bugs is enabled.

What should happen

Game should run fine. Or not given my AWESOME video card. :P

Logs

No response

Platform

Windows

Mobile phone model or graphics card

Intel HD 2000

PPSSPP version affected

The latest i got today (June 13, 2023)

Last working version

No idea

Graphics backend (3D API)

Other

Checklist

• [X] Test in the latest git build in case it's already fixed.
• [X] Search for other reports of the same issue.
• [X] Try resetting settings or older versions and include if the issue is related.
• [ ] Try without any cheats and without loading any save states.
• [X] Include logs or screenshots of issue.

[hrydgard]

Can you check if 1.15.4 has this problem on your computer?

(When you say "the latest", I assume you got from the buildbot? Or did you just download the latest from the main site?)

[Felipefpl]

Can you check if 1.15.4 has this problem on your computer?

Downloaded 1.15.4 from ppsspp's site, the same problems happen with it.

(When you say "the latest", I assume you got from the buildbot? Or did you just download the latest from the main site?)

Yes, i got the latest release today from buildbot.

Edit: i'll understand if this can't be fixed, i know my card sucks but i cant buy a new computer so dont worry too much about this. ;) :+1:

Edit 2: the specs of my video card are here:

https://www.techpowerup.com/gpu-specs/hd-graphics-2000.c1248

[hrydgard]

OK, anyway, thanks for reporting. There might be something to be done, or there might not be.

[hrydgard]

The green line at the bottom is easily reproducible in cut scenes, we're drawing from an oversized buffer and need to clamp UV:

[Felipefpl]

I see, thanks for the update. I dont remember seeing this at the time.

[hrydgard]

Yeah I just added it here as a reminder to self to fix, no worries.

[hrydgard]

When the green flicker line is happening, it's drawing from a 512x512-specified texture that's larger than the actual content, but this is really just another case of bilinear filtering outside stuff by accident. The game is doing some really wacky stuff when drawing the video buffer (drawing R, G and B separately as CLUT8 textures) so we can't just detect that a video decode is happening and resize the target framebuffer. The problem still exists (though weaker) at 1x though, but I think that it might actually happen on real hardware too.

Not going to prioritize fixing it since it'll require a pretty nasty hack.

[Felipefpl]

@hrydgard - I understand, thanks for looking into this issue. Indeed it's better to wait till a better solution comes. 👍

[hrydgard]

GuffManDude on Discord reported occasional black flickers on iOS, in Vulkan only:

https://github.com/user-attachments/assets/67f636aa-7906-4134-a03a-b1081308c216

[Felipefpl]

Strange, i dont notice the black lines, only the green background. :)

[hrydgard]

Not sure i understand? the line (under video) is green and not black... no black lines.

[Felipefpl]

I was talking about the black flickers on iOS. :P

[hrydgard]

Then why say black lines and not flickers? And what green "background"?

[Felipefpl]

My mistake about black "lines". About the green just check the background. I dont remember seeing those colors in the game running on console.