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bsnes-emu / bsnes

bsnes is a Super Nintendo (SNES) emulator focused on performance, features, and ease of use.
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HD mode 7 corruption in R-Type III #146

Open timotheeg opened 3 years ago

timotheeg commented 3 years ago

Hi there,

I tried out bsnes v116 on OSX (Catalina 10.15.7) to see how R-Type III would look like with HD mode 7 and noticed a rendering glitch.

It occurs about halfway in stage 1. See screenshot below.

My settings:

image

Expected behaviour: no glitch 😅

Do let me know whatever other info I could supply to help.

Screwtapello commented 3 years ago

For reference, the first level is also the first demo played in the attract mode, so you don't have to worry about being minimally good at R-Type in order to reproduce the issue. Here's a screenshot of that same section of the level, with the Fast PPU (and therefore HD Mode 7) disabled:

r-type-iii

Ping @DerKoun, who wrote the HD Mode 7 code.

Screwtapello commented 3 years ago

DerKoun suggested on Discord that disabling "perspective correction" in the Enhancements section of the Settings dialog would avoid the corruption without disabling HD Mode 7 entirely. I can confirm his suggestion works as described.

timotheeg commented 3 years ago

disabling "perspective correction" in the Enhancements section of the Settings dialog would avoid the corruption without disabling HD Mode 7 entirely. I can confirm his suggestion works as described.

Works for me as well. Thank you! 🙏

Zerowalker commented 2 years ago

Oh i actually got a similar bug just recently on Secret of Mana, it happened randomly on a boss fight which utilizes HD Mode 7. 1 Time in just a short while, and it ran through those part many many times, it seemed to happen after going to one of the start menus, i couldn't reproduce it however.

I think i tried changing the "Perspective Correction" while this glitch was active and it didn't do anything, which perhaps is expected?

If it's of any value i got have it recorded.

Thought it was an actual game glitch, but after seeing this i am more leaning towards it being a "bug".