gtk: video render is antialiased

[martinlindhe]

I tried and failed to find a way to disable antialiasing with gtk-rs.

It appears the issue is a feature of cairo, as explained at https://www.cairographics.org/FAQ/#sharp_lines

dustbox showing smeared graphics from running utils/palette/palette.com:

dosbox shows a clear image for the same program:

The issue is hard to see in Firefox too because also firefox antialiases the images. Save and use an external viewer such as Gimp to see the issue better.

[nicklaswj]

Since we just draw simple pixels from memory, maybe we could use something more simple than cairo...

[martinlindhe]

I totally agree. Cairo came as a consequence of using gtk-rs.
I'd prefer to switch gui framework at this time

[nicklaswj]

maybe we should use opengl/esgl to render the screen, and thus make the video rendering GUI agnostic.

[cjschneider2]

Is this the only reason you are considering moving away from GTK?
Edit: If you just want to drop Cairo you can use a GDK pixbuf directly and render that into a GTK widget

[nicklaswj]

It's not the only reason, we also have some inconsistency problems between Linux (me) and OSX (martinlindhe)...

[nicklaswj]

also it would be nice to use a framework that feels more native than GTK, such as QT

[cjschneider2]

Would you prefer the GUI in C++ with bindings to rust objects ala rust-qt-binding-generator or something more along the lines of one of the QML bindings? (with as much as possible in Rust)

[nicklaswj]

I personally prefer QML bindings such as https://github.com/White-Oak/qml-rust
rust-qt-binding-generator seems too messy, and we don't require anything fancy, i.e. we only need a list for disassembled code, some buttons and text labels.

@martinlindhe right?

[martinlindhe]

Yea, I agree. We'd want as much code as possible in rust.