[KH Birth by Sleep] Weird graphical anomalies in a few cutscenes.

[AkiraJkr]

I assumed being a D3D9 error, but recently found out to be wrong as a friend of mine had found the same issue as me, and he even attempted seeing if they would be gone changing the backend, which didn't. I'll have the screenshots of some(if not all) of these situations, and their respective Cutscenes.
To prove this is not a issue with my texture pack, and more with the emulator, I turned it off.

Cutscene: Terra - Unlocking the Door

Cutscene: Any cutscene that includes the mirror and this room.

Cutscene: Any cutscene that showcases the Radiant Garden logo

Cutscene: First Keyblade Graveyard cutscenes, where the logo shows up

If any test is necessary or something for not having the game avaiable, please tell me.

And to assure you, this happens in any version of the game. Even Final Mix.

[unknownbrackets]

Could you try exporting a GE debugger dump on PC?

To do this, open the game and select Debug -> GE debugger..., then when it's displaying the scene, press Record in the top right. After a second or so, it'll finish and save a trace of the drawing activity.

After that, check the memstick/PSP/SYSTEM/DUMP folder and it'll have created a file named something like "ULES12345_0000.ppdmp". You can zip that and then drag and drop it into a reply here.

-[Unknown]

[AkiraJkr]

PPSSPP_STATE.zip

Throwing a save state here per request on Discord, later uploading a GE dump from someone.

[unknownbrackets]

Any cutscene that includes the mirror and this room.

So, this happens only in Direct3D 9 and Direct3D 11. It's fine in Vulkan and OpenGL. Probably also doesn't work on mobile for Vulkan or OpenGL, though.

The bad part of the mirror is drawn with texturing disabled, and:

• Alpha blend on: 2.0 * src.a + fixed 1.0
• Alpha test on: a > 0
• Depth test on: ALWAYS
• Logic op on: noop

So the important thing is this only affects depth, since logic op is set to "noop" and stencil test is disabled. Following the logic:

1. Replace blend is set to REPLACE_BLEND_PRE_SRC because of source alpha doubling.
2. Replace alpha is REPLACE_ALPHA_NO since no stencil op.
3. Because replaceBlend is not REPLACE_BLEND_NO, we don't try to emulate the logic op, so noop is ignored.

Presumably the blending settings were left on by accident and don't matter in this case. There's a decent chance the other issues are also logic ops, but it's not for sure. But a game using logic ops once is probably a game using them other places too.

-[Unknown]

[AkiraJkr]

Well, I don't know if this is of any relevance, but sometimes, when I'm dumping textures, they come weirdly transparent, even though in-game they aren't. But that's just something I picked irrelevant(probably?) to this.

[unknownbrackets]

Cutscene: Any cutscene that showcases the Radiant Garden logo
Cutscene: First Keyblade Graveyard cutscenes, where the logo shows up

Can confirm both of these also use the "noop" logic op.

Well, I don't know if this is of any relevance, but sometimes, when I'm dumping textures, they come weirdly transparent, even though in-game they aren't. But that's just something I picked irrelevant(probably?) to this.

Actually, PSP games often do this. You can set the texturing unit to ignore alpha, which many games do for some textures (I've guessed that it might render faster in this mode, but not sure.)

In these cases, they often leave alpha set to 0 (or any other value) since it doesn't matter. It could even be random values, but that's pretty rare.

-[Unknown]

[AkiraJkr]

Leaving here another cutscene that I forgot to add, incase it helps in some way.

Cutscene: All Characters - Mark of Mastery

I am adding this one in specific, because sometimes, it's random, sometimes, it isn't. The lighting bugs affect the floor.