Rendering artifacts with hardware acceleration on

[felipe-canales]

Describe the bug
With some combinations of window and page resolutions, hardware acceleration causes resized pages to show artifacts.

Exact Steps to Reproduce
Steps to reproduce the behavior:

1. Make sure hardware acceleration is activated. In specific, the 2nd nested option ("Activar Filtros por programa" in spanish)
2. Set up window and reader: window should be maximized on a 1080p screen with taskbar shown. The reader shold be attached reader, with no minimal info)
3. Open a comic with pages that are 900x1200

Screenshots

Faulty option

Full window screenshot with artifacts

How it should look

How it looks with the option in question

Zoom to the artifacts

Version/Commit (check the about page, next to the version, for the string between brackets):

• Version: 0.9.180
• Commit: f1a20af

Additional context
I've seen this problem with other resolutions. 900x1200 is what I managed to reproduce. The image shows correctly for a moment before the artifacts appear.

I can share the cbz file I made to take the screenshots, if a mediafire link is okay. Github doesn't allow cbz attachments.

If you have a crash dump paste it between ```

Crash dump

# If you have a crash dump paste it here

[maforget]

The reader hardware acceleration does need some love. There as already been some work done is upgrading the OpenGL library to a newer one in issue #23. But doing so a lot of existing function are now obsolete. So I would need to actually learn OpenGL to understand what is happening there. Also #56 is related to that.

That software acceleration option does create problems, I would suggest to disable it. I would need to look at the code to know exactly what it does, but that effect is the software filter being applied.

You could just rename your sample file to .zip and post it here instead.

[felipe-canales]

You could just rename your sample file to .zip and post it here instead.

Oh, right. Didn't think about that.

Tests.zip