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I'm not sure how to answer that question, you don't have to do anything you don't want to do. GTK and its apps currently use integer coordinates, so in order to

by md8z 5y ago

I'm not sure how to answer that question, you don't have to do anything you don't want to do. GTK and its apps currently use integer coordinates, so in order to change that it needs to be changed to use floating point, and all the apps need to be changed to use it too. This is an API break and another thing that will take a long time to plumb through the whole stack and I doubt it will happen until at least GTK5. Maybe use KDE or Windows until then? Or get different hardware? Edit: comment from a GTK developer here that goes more into detail: https://gitlab.gnome.org/GNOME/mutter/-/issues/478#note_793963 https://gitlab.gnome.org/GNOME/mutter/-/issues/478#note_7939... I guess if you want to know why should things be this way, you could say it's because of technical limitations? Though that may not be a satisfying answer to you.

kuschku 5y ago
GTK2 used float coordinates and supported fractional rendering. GTK3 breaking that is a bug, not a feature. Especially text should NEVER be scaled after rendering. And re: performance, that’s great that you’ve got hardware that can run 3D in-browser shader sites or games at 6K resolution at 60fps just fine, mine can’t. If it were running at 4K, as it’s supposed to, I’d get significantly more fps. Especially at a time where GPUs are rare and Gnome still decides I should get 50% more performance just so they save some work.
- md8z 5y ago
  I think you might be thinking of Cairo when used with one of the print backends, not GTK. GTK2 did not use float coordinates or support fractional rendering. See for example here: https://developer-old.gnome.org/gtk2/2.24/GtkWidget.html#gtk-widget-set-size-request https://developer-old.gnome.org/gtk2/2.24/GtkWidget.html#gtk... https://developer-old.gnome.org/gtk2/2.24/GtkWidget.html#gtk-widget-queue-draw-area https://developer-old.gnome.org/gtk2/2.24/GtkWidget.html#gtk... Those would need to be floats if you wanted to have a non-integer scale. Changing everything to use float coordinates is a large undertaking that touches the whole stack and will require a lot of work. It still hasn't been done yet as of GTK4. If you'd like to spend your time helping out then please do so. Please refer to the gitlab comment above for a description of some of the technical issues that you would have to solve. But it may be more cost effective for you to just get some new hardware with a better GPU, or use something else.

by md8z 5y ago

kuschku 5y ago

GTK2 used float coordinates and supported fractional rendering. GTK3 breaking that is a bug, not a feature. Especially text should NEVER be scaled after rendering. And re: performance, that’s great that you’ve got hardware that can run 3D in-browser shader sites or games at 6K resolution at 60fps just fine, mine can’t. If it were running at 4K, as it’s supposed to, I’d get significantly more fps. Especially at a time where GPUs are rare and Gnome still decides I should get 50% more performance just so they save some work.

md8z 5y ago
I think you might be thinking of Cairo when used with one of the print backends, not GTK. GTK2 did not use float coordinates or support fractional rendering. See for example here: https://developer-old.gnome.org/gtk2/2.24/GtkWidget.html#gtk-widget-set-size-request https://developer-old.gnome.org/gtk2/2.24/GtkWidget.html#gtk... https://developer-old.gnome.org/gtk2/2.24/GtkWidget.html#gtk-widget-queue-draw-area https://developer-old.gnome.org/gtk2/2.24/GtkWidget.html#gtk... Those would need to be floats if you wanted to have a non-integer scale. Changing everything to use float coordinates is a large undertaking that touches the whole stack and will require a lot of work. It still hasn't been done yet as of GTK4. If you'd like to spend your time helping out then please do so. Please refer to the gitlab comment above for a description of some of the technical issues that you would have to solve. But it may be more cost effective for you to just get some new hardware with a better GPU, or use something else.