Geometry Glitches in Luigi's Mansion - build 4.0-1569

[epeternally]

As can be seen here, the Geometry on Luigi's character model and, to a slightly lesser degree, on Toad's is not rendering properly in the development build 4.0-1569 for me.

Spoiler: (Show Spoiler)

I've tried changing different graphics settings - per pixel lighting, EFB to texture vs RAM, and so on without it having any effect on this bug, and Dolphin 4.0 renders that same geometry perfectly, without any glitches at all, so there seems to have been a regression between there and the current build. Obviously, I don't expect development builds to be perfect and recognize that they're not intended for mass consumption, I just wanted to bring attention to the fact that this is a bug that exists.

[JMC47]

No, it's not a regression, this shit happens in the actual game. It's just worse on dolphin due to some rounding errors.

The reason why it's a regression is because the shadows cause it.

[Shonumi]

It really would help the developers if you found the exact revision this first occurs in (look up bisecting to cut down how many revisions you have to try) then file an issue report on Dolphin's Google Code page. It's more helpful if they don't have to spend time getting that info themselves, and increases the chances of a speedy fix (or a fix at all). Thanks for bringing it up though, it's just that a little more info can go a long way.

@JMC47 - Are you sure? I don't think the game is supposed to look like that (I do not own it, cannot verify). OP said 4.0 does not exhibit those glitches as well (unless 4.0 really is just inaccurate and the game does that on real HW).

EDIT: NVM, I remember talk about the shadows now. Still is there an issue report on the rounding errors, or is it something that's can't be reasonably fixed atm?

[MayImilae]

The issue report has been around for some time. I keep forgetting to add information about it to the wiki. I guess I need to get that done today...

Basically, there is some sort of depth problem. Turn on freelook and use shift-S to pull back a little and it will improve. Just don't go too far back otherwise shadows will disconnect from geometry. Usually 6-10 taps, give or take, but if you change the speed of freelook previously in the past (it saves it, ugh) then the precise number of taps will change, so you need to go by eye instead of specific taps.

[epeternally]

(05-12-2014, 11:43 AM)JMC47 Wrote: No, it's not a regression, this shit happens in the actual game. It's just worse on dolphin due to some rounding errors.

The reason why it's a regression is because the shadows cause it.

Ah, okay.

(05-12-2014, 11:47 AM)Shonumi Wrote: It really would help the developers if you found the exact revision this first occurs in (look up bisecting to cut down how many revisions you have to try) then file an issue report on Dolphin's Google Code page. It's more helpful if they don't have to spend time getting that info themselves, and increases the chances of a speedy fix (or a fix at all). Thanks for bringing it up though, it's just that a little more info can go a long way.

@JMC47 - Are you sure? I don't think the game is supposed to look like that (I do not own it, cannot verify). OP said 4.0 does not exhibit those glitches as well (unless 4.0 really is just inaccurate and the game does that on real HW).

EDIT: NVM, I remember talk about the shadows now. Still is there an issue report on the rounding errors, or is it something that's can't be reasonably fixed atm?

Based on what JMC47 said, I assumed that it would be introduced in build 1288 since this is apparently a byproduct of the shadow rendering and according to the Luigi's Mansion wiki page that is the build in which the shadows were fixed. Testing confirms this, build 1288 renders the same as in my original screenshot while 1281 looks like this (1282 crashes, so this was the closest I could get):

Spoiler: (Show Spoiler)

Which is the same as earlier builds. It sounds like the rounding errors are a known issue (edit: this is indeed the case, as linked above), so this is probably all for naught, I'm just trying to give as much information as I can. If it weren't for the fact that my Wii was on the other side of the country at my parents' place, I'd be happy to provide some comparison shots of the game running on real hardware, but unfortunately it is.

Edit: Can confirm that using freelook to pull the camera back a bit greatly improves the effective quality of the game's rendering, here we have both shadows and character models that aren't a disaster area.

Spoiler: (Show Spoiler)

Obviously it's a hacky workaround, but it gets the job done for the moment, which is cool. Definitely information worth adding to the wiki (I'd volunteer, but I'm new and don't want to break anything).

[JMC47]

With Dolphin, there are tons of dumb things you just have to know. This camera trick is one of them, which is why someone will put it on the wiki eventually.

As to will it be fixed? Probably eventually.

The reason I'm sure this happens on console is because I have a capture card and we did screenshots showing the glitch on console before this was even merged into master, MaJoR can confirm that.

[MayImilae]

You mean I have a capture card and I provided the screenshots. You didn't believe it at first.

[JMC47]

The lines on the background, yes, but the character stuff I spotted way before it was merged