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TASEmulators / BizHawk

BizHawk is a multi-system emulator written in C#. BizHawk provides nice features for casual gamers such as full screen, and joypad support in addition to full rerecording and debugging tools for all system cores.
http://tasvideos.org/BizHawk.html
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Certain effects become entire screen flashes when hq2x is enabled #2196

Closed ghost closed 4 years ago

ghost commented 4 years ago

OK so Sega Genesis Altered Beast.

load game and fast forward to third attract mode. (level 2 with dragons)

in version 2.4.2 no problem. OGL and DX work perfect here

Latest AppVeyor build in Direct X mode no problem.

Latest appveyor Build in OpenGL problem, Every time dragon fires screen flashes.

This will happen if you reach level 2 or if you allow the game to demo level 2 which is every 3rd demo and you can fast forward to get there.

Was able to replicate on 3 systems with 3 different video cards, Nvidia, Intel and AMD

Something has either changed with OGL or with Genesis Plus GX in latest dev builds. I can make this occur 100% of the time on dev and 0 times on 2.4.2

(author's username was @<!---->jjfmz42015)

ghost commented 4 years ago

not just altered beast, happens 100% of time during game play if in OGL mode on Twin Cobra.

Note 2.4.2 also plays this proper. Dev builds only, OpenGL only

ghost commented 4 years ago

happens with many more games

nattthebear commented 4 years ago

I can't reproduce this.

YoshiRulz commented 4 years ago

@jjfmz42015 You'd linked the first broken commit, why did you remove it? Did you bisect properly?

ghost commented 4 years ago

@jjfmz42015 You'd linked the first broken commit, why did you remove it? Did you bisect properly?

Because the last commit i thought was good does this intermittently. Still have not reproduced under 2.4.2 but still producing with dev builds. I will test more and try to find the exact build it starts from, then I will record videos of proper vs what Im noticing.

ghost commented 4 years ago

I can't reproduce this.

Try loading the a second genesis game. Seems sometimes it happens and sometimes it doesn’t until you load a second game.

I will see if I can somehow narrow down better. Already tried on multiple video cards on multiple systems so I know its not a video driver issue and that it will happen on other machines.

Will update this topic soon. Will test more

ghost commented 4 years ago

ok guys.

with this rom Twin Cobra (U) [!] SHA1:C386C617703A3F5278D24B310C6BC15E3E180BDF MD5:0006C0C0DB9B334B79F1ED20EEB8B9BF

under opengl and hq2x I am able to replicate 100% of the time during gameplay

With version 2.4.2 under ogen gl and hq2x it works perfect.

@nattthebear @YoshiRulz

also with many other games. if you try again ogl+hq2x you will see it for sure.

ghost commented 4 years ago

hmmm actually happens on all cores not just sega.

so if opengl and hq2x many games either flash or seem to cycle through colors.

a few builds back hq2x was broken and i guess its fix is partial

ghost commented 4 years ago

the problem stars since this fix https://github.com/TASVideos/BizHawk/issues/2160

zeromus commented 4 years ago

Find a game to test that doesn't require having to play to level 2

ghost commented 4 years ago

Find a game to test that doesn't require having to play to level 2

Try twin cobra sega genesis

ghost commented 4 years ago

This game should show the problem the second you start level 1