Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Apple II color banding on left side of screen on 2011 MBP #1277

Open
ryandesign opened this issue Dec 19, 2023 · 1 comment
Open

Apple II color banding on left side of screen on 2011 MBP #1277

ryandesign opened this issue Dec 19, 2023 · 1 comment

Comments

@ryandesign
Copy link
Contributor

ryandesign commented Dec 19, 2023 •
edited
Loading

Trying Clock Signal on Linux Mint 21.2 on a 2011 13" MacBook Pro for the first time, I see a color problem in Apple II emulation that I don't see on macOS on a 2012 15" MacBook Pro with Retina Display (neither in the Xcode/Metal UI nor in the scons/SDL/OpenGL UI).

Using the latest code in git (but reverting 81ad864 due to #872 (comment)) built for SDL/OpenGL using scons and this test program:

1GR:C=1:FORI=0TO39:COLOR=C:HLIN0,39ATI:C=C 1:IFC>15THENC=1
2NEXT

I get this output:

colorbands

Those should all be stripes of solid colors.
@ryandesign ryandesign changed the title Apple II color banding on left side of screen on Linux Apple II color banding on left side of screen on 2011 MBP Dec 21, 2023
@ryandesign
Copy link
Contributor Author

Wondering if the problem had been introduced at some point recently, I built an old version of the code from 2019 and the problem was present there as well.

I then tested in macOS Monterey 12.7.2 on the same 13" 2011 MBP and the problem is still present, whereas it is not present on the same macOS version with the same (MacPorts) libsdl2 2.28.5 install on the 15" 2012 Retina MBP. So the only variable is the video card?

The 13" 2011 MBP exhibiting the problem has Intel HD Graphics 3000 384 MB.

The 15" 2012 Retina MBP that doesn't show this problem has NVIDIA GeForce GT 650M 1 GB.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
1 participant
@ryandesign