World Neverland: Naruru Oukoku Monogatari Black Screen at startup

[daniel229]

log:
http://pastebin.com/ZnSquJq7

but if I try run Patapon 3 -> stop Patapon 3 -> run World Neverland -> stop World Neverland -> run Patapon 3 -> stop Patapon 3 -> run World Neverland.
then It startup success.

[unknownbrackets]

Hmm, any chance you could bisect this and see when it was last working?

This screen looks familiar. I think I tried a demo of it not long ago and it was working.

-[Unknown]

[daniel229]

broken by this commit 30536fa
last working verson is v0.7.6-1178-g94cce21,next verson is v0.7.6-1192-g30536fa that doesn't wok.

[unknownbrackets]

It was this commit: 51d0f73

Reverting that fixes it, but it doesn't play the video. Before it was never even trying.

-[Unknown]

[unknownbrackets]

In the demo it hangs at the check at 0880B0C0, if that passes it will go through.

-[Unknown]

[unknownbrackets]

Apparently this is not affecting the US version of the game:
http://forums.ppsspp.org/showthread.php?tid=6278

-[Unknown]

[daniel229]

That's not this game.

[unknownbrackets]

Oh, so the names were just similar, my bad.

-[Unknown]

[unknownbrackets]

I'm not sure why, but in the demo, sometimes it hits an error:
52:39:246 TEST_MAIN_TH E[IO]: HLE\sceIo.cpp:997 sceIoLseek(4, ffffffffd7e3eaf2, 0) - ERROR: invalid file

Notably, that offset is clearly negative. Not sure what's up. Our behavior with negative values is correct, though, afaict.

Then it calls sceMpegRingbufferPut(0894a2f8, 32, 960), but always gets 0 packets. There are a few options here:

• io is failing to give it packets.
• the game is expecting the callback to be called multiple times if it doesn't produce enough output (we don't emulate this properly yet.)

Not sure. Also, on reset, the game does different things, so we're clearly not resetting some state...

-[Unknown]

[unknownbrackets]

Okay, so I narrowed this down to the scePsmf*EP functions which were "implemented" in scePsmf but actually are not implemented and just return completely uninitialized data. The game seems to use this EP map. Possibly affects others too.

Additionally, "headerOffset" is uninitialized somewhere and used, but that one is pretty easy to fix.

-[Unknown]