State of demoscene demos

[PoroCYon]

Broken, "interesting" cases:

• [x] LMNTS by TiTAN (see #46): white screen, other issues?
• [ ] Weiche Kekse by K2 & TiTAN & Peisik (see #353): forced vblank-related timing issue, transitions etc. are coder's (i.e. my) fault
• [ ] Death Chimp by K2: probably uses DLDI, but still "runs", although fails to load textures and music
• [ ] Weiche Pommes by K2: does weird stuff to load assets
• [ ] The Snowman-NDS by Checkpoint: sometimes segfaults, but is fine most of the time. Running gdb seems to prevent it...
• [ ] BitBox by MsK`, Nurykabe & hitchhikr: heavy flickering, part of the bottom screen (3/4 of the walking figure) ends up on the top screen
• [ ] 2019: A DS-NICCC Odyssey by K2 vs TiTAN: ARM7 is kill, gets into an infinite loop of undefined instructions pretty quickly

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Broken because of DLDI:

• SVatG Loves You by SVatG: (see #49)
• Defc0n 0 by Scarab (see #51)
• The Strongest Demo by SVatG (see #354)
• The Big Holstein by K2
• K2-029: Numbering Sucks by K2: file loading is slightly weird
• Death Chimp II by K2
• SCHUKOHASE by KALTGETRÄNKEKABEL & Die Arschgeigen
• Heinrich-Siegfried Viktor by SVatG
• It's 1975 and this man is about to show you the future by SVatG
• Herocat versus Univillain by SVatG

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Mostly working:

• [x] MCMC by REN: flickering yellow borders during the last (glowing shark) scene, works otherwise: seems to be working now?
• [ ] MoDS Volume 1 by RSE & DSR: slight background flickering, but works
• [ ] MoDS Volume 2 by RSE & DSR: same flickering issue

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Working:

• Lack of Disco by Popsy Team (see #332): coder's fault, emulated correctly

• Chimp Cubed by K2 (see also: #355): Seems to work now?

• Flower demo by Moppi Productions

• Datastorm 2014 Invitation by Up Rough

• Our first time by Elektro Dude & Dr. Bitsch & Mr. M

• Bandits by REN

• sd-4k by Speckdrumm

• FastDS by TiTAN

• Puc McAwesome by SVatG

• Dicewars DS by 1in10, melw and Reko

• NitroTracker v0.3 by 0x80

• DuckSlinger by coda

• Dboy by Checkpoint

[Arisotura]

LMNTS is a regression and is broken since 0.7.1

weird

[asiekierka]

Just as a heads-up: I have implemented preliminary GBA Movie Player emulation which accepts FAT image files here -> https://github.com/Arisotura/melonDS/pull/506 -> this might prove helpful in testing demos which utilize DLDI

[PoroCYon]

@asiekierka tried all of them, none worked.

[asiekierka]

Discussed on IRC: the problem is not lack of DLDI support, but rather lack of NitroFS support (which is a separate, homebrew-specific thing). Should be theoretically possible to run these as-is via DLDI, but requires many hoops.

[Arisotura]

I don't see how melonDS would 'lack NitroFS support', NitroFS is something that is entirely contained inside the ROM and that the game is responsible for parsing and all. melonDS doesn't have anything to do there besides providing access to the ROM data. typically via the cart interface. but maybe some old pre-DLDI homebrew ROMs do that shit where they expect to see the ROM mapped at 0x08000000.

[nathanielcwm]

C0D3R C0L0RZ is also broken btw With dldi enabled in options on fbca47381b9e37ee19a2bdfdcd4e393d0ea69a7d

[tuzepoito]

For some reason it seems MoDS Volume 2 does not work since version 0.9.3. It booted correctly in v0.9.2 using default options (with the occasional flickering) but in v0.9.3 I haven't been able to make it work, there is a blank screen and no sound.