HiDPI not supported - Win10 + GLCanvas + JDK11 + JOGL2.4

[jzy3d]

GL viewport do not occupy the whole panel in this configuration. Similar to a known bug with 2.3.2.

Another JOGL user reported a similar problem with Newt and suggested a workaround with a sample code.

[doquang]

@jzy3d - Do you have any workaround solution for AWT? I saw a post about it, https://forum.jogamp.org/canvas-not-filling-frame-td4040092.html#a4040138

• I tested the workaround of farrellf on Nov 09, 2019; 3:59am, but this do not scaling-up the surface. It just make the window fit to the canvas. It also requires GL2(), that somehow do not support on my MacBook.
• See the post of Karl-Heinz Mali on Dec 29, 2019; 7:59pm, it show the missing of GLCanvas, but it requires to recompile JOGAMP.

[jzy3d]

Hi @doquang , I am currently working on it but at Jzy3D level, not solving the underlying JOGL bug on Win10. The fix I am evaluating is more or less what is discussed by Farelff, with an ability to avoid stretching if HiDPI is actually supported.

I am a bit surprised by the fix suggested by Karl-Heinz, that may mean there is a mess between current and requested pixel ratio, the former being overrided by the maximum pixel ratio. Doing this properly would require to better undestand the whole pixel ratio management. But it's a very interesting direction thanks, for pointing this.

[jzy3d]

Another workaround suggested by @doquang

setLayout(new BorderLayout() {
          @Override
          public void layoutContainer(Container target) {
              synchronized (target.getTreeLock()) {
                  Insets insets = target.getInsets();
                  int top = insets.top;
                  int bottom = target.getHeight() - insets.bottom;
                  int left = insets.left;
                  int right = target.getWidth() - insets.right;

                  Graphics graphics = getGraphics();
                  AffineTransform transform = ((Graphics2D) graphics).getTransform();
                  double scaleX = transform.getScaleX();
                  double scaleY = transform.getScaleY();

                  int width = right - left;
                  int height = bottom - top;
                  width *= scaleX;
                  height *= scaleY;

                  renWin.setBounds(left, top, width, height);
              }
          }
      });