Classic NES Series games flickering

[Cibomatto2002]

Expected behavior

No flickering

Actual behavior

Flickering

Steps to reproduce the behavior

Play Classic NES Series - Excitebike (USA, Europe), Classic NES Series - Metroid (USA, Europe), Classic NES Series - Super Mario Bros. (USA, Europe).

Build details

VisualBoyAdvance-M-WX-2.0.0-beta2

Operating System (Windows, Mac, Linux, etc.):
Windows 10 64-Bit

Interface (wx, SDL, default is wx):
Default

Version of code (pre-built binary version, or commit ref, or just "master"):
I think master

Any other relevant build information:
No

If this is e.g. a joystick or video issue, then the relevant hardware information:

Intel HD Graphics (Gigabyte)
1023MB NVIDIA GeForce GT 720 (EVGA)
ForceWare version: 365.10
SLI Disabled

[ZachBacon]

Try this beta 3 release https://github.com/visualboyadvance-m/visualboyadvance-m/releases/download/Beta-3/visualboyadvance-m-win32-Beta-3.7z

[Cibomatto2002]

Flickering still there

[rkitover]

@Cibomatto2002 Have you tried both the Simple and OpenGL graphics output drivers?

[Cibomatto2002]

Yes both Simple and OpenGL do it. I made a video to explain it better to you all.

https://www.youtube.com/watch?v=-lDL5hCYTCs&feature=youtu.be

[Squall-Leonhart]

reproduce on a current nvidia display driver please.

there was a flickering issue in the distant past, but it was a core issue and no major changes have been made to the relevant file (could this be an issue with memory mirroring)

[ghost]

im not sure how these classic roms should look like in gba. some dont flicker(Castlevania) others do like Super Mario. other emu flickers as well even the advertised accurate ones.

[negativeExponent]

this is still an issue with latest commit b23d463

strangely enough, running the latest libretro core using this same commit does not have the said flickering issue (more obvious in Classic SMB)

interestingly, running vbam with either interframe-blend modes other than none remedies the problem, both in simple or gl, while this is not required on the libretro port (even if core is run in 32bpp mode)

[Squall-Leonhart]

these games are supposed to be interframe blended and are on actual hardware.

[negativeExponent]

as i have stated, libretro, which uses the same commit does not need interframe blending (or lcd ghosting effect) to be enabled. Its rare to have a gba game uses such slow refresh to create some effects (only see a few games that may need it like race timers etc). But it should never be flicking like it does on the standalone compared to libretro or other emu. this is not the same flickering on gb/gbc that you forced to dismiss before (which the issue was not even about the flickering).

…

On Sat, Aug 15, 2020 at 9:42 AM Squall Leonhart ***@***.***> wrote: these games are supposed to be interframe blended. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#61 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AM4MWSWOLOCKDFR6ZLEM5FLSAXRZBANCNFSM4C3DNYAQ> .

[Squall-Leonhart]

i don't care what libretro does.

[Squall-Leonhart]

the same behavior is observed on hardware and mgba, use the previously noted interframe blending techniques to mitigate it, closing as expected behavior.