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MX Unleashed - major graphical issue present since 1.2.0 builds of PCSX2
#1
If there's one thing I don't like, it's finding out that a game I like to play has a bug that hasn't been fixed yet.  This is common in the world of emulation.  But the one thing I dread is finding out that one of my favorite games has a bug that hasn't been fixed for years.  In this case, the game in question is MX Unleashed.

When driving around any level, you'll often see major texture glitches on the ground.  Additionally, you'll often run into clusters of crazy vertex explosions, often completely blocking your view.  In a game about always needing to see directly in front of you and directly behind you, this is a harmful bug.  I've tried every possible combination of settings, and nothing gets rid of them.  Here's a select few in the first course of the game:

https://www.youtube.com/watch?v=4Yt-tUYp9LI

Here's the annoying part.  Not only does Software rendering not fix this, but it also makes it worse!  Software rendering adds crazy colors to those vertex explosions, making them even more likely to induce seizures.  Here's some of the same ones but using Software rendering:

https://www.youtube.com/watch?v=i764ERVPBQA

Again, every time a new update has come out that claims to fix rendering errors in games, I fire up MX Unleased in the latest dev build at the time and try every possible combination of settings to see if it's been fixed.  These recordings were made using the latest 1.7.0 build at the time of me typing this.  Although I've been trying this since the 1.4.0 builds, this issue has been reported all the way back in the 1.2.0 days.  This example is from the second game in the series, but it's the same game engine and the same issue:

https://forums.pcsx2.net/Thread-Texture-...-Unleashed

The game functions perfectly otherwise, and since Cxbx-reloaded can't play the game yet, PCSX2 is the only way to emulate this game currently.  It would be nice if someone could take a deeper look into this.  For a bug that's eluded PCSX2 devs for this long, it must be hidden somewhere deep in the code and not where people would think to look.
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#2
This is now fixed on master, you can grab the latest build from here and it will work, make sure "Automatic Gamefixes" is enabled https://buildbot.orphis.net/pcsx2/
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#3
Oh wow, just out of curiosity, what was the issue? I probably won't understand it, but it would still be cool to hear about. Also, what gamefixes specifically does it require? Automatic Gamefixes disables things like speedhacks.
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#4
It's a little complicated, but basically there's a co processor known as "COP2" and the instructions take a few cycles to complete normally, but the way PCSX2 emulates it, they are instant, but some games take advantage of these delays, this game being one of them, so it was getting the wrong result. Nothing a quick bit of rearranging won't fix Smile

You need automatic gamefixes on in the PCSX2->Game Settings menu. I think you're confusing it with "presets", which is something else.
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#5
Yeah, I was, it works perfectly from what I've seen so far.
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#6
Good to hear Smile
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#7
Can you confirm that it's fixed for MX vs ATV Unleashed? I don't play that game, but it looks like it's having a similar issue.
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#8
I haven't created a patch for that, but if it's suffering the same issue, I can certainly look in to it
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