Wayland scaled display issue

[dazoe]

Display scaling on Wayland seems to cause problems.
I run with my display scaled to 110%
When running the gl41core-cube example with wayland build tag the cube renders in the lower left corner.
The x11 version looked normal.
After investigating I found out the x11 version wasn't actually normal because it was only 5% smaller.
The wayland version was scaling the frame buffer to 2x instead of just 1.1x like x11
Adding a FramebufferSizeCallback and changing setting gl.Viewport corrects the example.

Is wayland scaling to 2x instead of 1.1x intended behavior? Or is it due to upstream support?

[snoweuph]

Had the Same Problem with GLFW before under Java.

The Scaling is on the Window Object, not the Desktop Object,

The scaling object beeing only ints Is intended, on the Window it should be the right Scaling Information though

[Cyliann]

I have the same exact problem. My screen scaling is set to 1.25. When renderring a white screen only the left-bottom quarter is affected. The problem vanishes, when scaling is set to 1.

[snoweuph]

The Scaling is on the Window Object, not the Desktop Object,

The scaling object beeing only ints Is intended, on the Window it should be the right Scaling Information though

@Cyliann try this

[Cyliann]

@Cyliann try this

Try what exactly?

[snoweuph]

Getting the Scale of the Desktop from the Window, instead of from the Desktop object.
Thats how GLFW does it.
The Desktop Scale on the Dekstop object can't hold Fractional Scalings, the Fractional Info is on the Window Objects

[dazoe]

This does appear to be fixed in glfw 3.4 #400