Graphic glitches on 16:10 displays

[Seekawan]

Prerequisites and Pre-Issue Checklist

• I'm reporting the issue to the correct repository:

• MegaMek

• MegaMekLab

• MekHQ

• I've tested the issue against at least the latest MILESTONE version

• I've asked on the MegaMek Discord about the error

• I've reviewed the BattleTech rules and MegaMek documentation, and I've confirmed that something isn't working as intended.

• I've searched the Github tracker and haven't found the issue listed

Severity *

Medium (Gameplay Limitation): Non-core functionality is impaired, providing a suboptimal but playable experience.

Brief Description *

Hello here is the report for a graphical bug I encountered on both my 16:10 laptops.
When trying to sweep the board a sort of graphical bleed happens as in the following screenshots :

Note that it is considerable worsened by playing in fullscreen, playing in windowed mode gives this results :

Which is only subtles lines but an issue nonetheless.

The error log is the following :

09:41:44,925 ERROR [megamek.client.ui.swing.boardview.BoardView] {AWT-EventQueue-0}
megamek.client.ui.swing.boardview.BoardView.draw(BoardView.java:876) - Error drawing background image. Raster Bounds: 0.00, 0.00, width:447.00, height:447.00, Attempted Draw Coordinates: 9, -1, width:438, height:448

As you can see the issue is the rendering of the board background image, in this case I was using the BW capellan skin that is default with 0.50.02 MegaMek.

To solve the issue I tried many things including the recommendations at https://github.com/MegaMek/megamek/wiki/Weird-artifacts-Screen-Distortions.
I did not see major improvements with the Dsun commands, be it d3d=false or enabling OpenGL.
But I can recommend to use the RAM advice.

After many test I managed to track the issue to the Megamek skins, as it is an issue with background image.
Many skins use the instruction <tile_background>true</tile_background> in BoardViewBorder.
But, for some reason I do not understand yet, Java does not get where the extra height of 16:10 goes compared to 16:9 and thus tries to fill the void top background with the borders creating the glitch.

So here you have essentially two options to solve the issue, use a skin that does not use a background image like plainSkin or set <tile_background>true</tile_background> to <tile_background>false</tile_background>. By not tilling the background will seem less detailled but the edges will not bleed on the background.

Steps to Reproduce

1. Have a 16:10 display
2. Launch MegaMek with a skin having a background image
3. Swing the board (especially pressing W and D simultaneously)
4. Look at the top left border of the board view

Operating System *

Windows 11

Java Version *

17.0.13 from Adoptium

MegaMek Suite Version *

v0.50.0

Custom MegaMek Version

0.50.02

Attach Files

megamek.zip

Final Checklist

• I've checked to make sure that this issue has not already been filed
• I'm reporting only one issue in this ticket for clarity and focus

[Seekawan]

A thread on MegaMek's official discord is also following the issue, it is "Graphical glitch on 50.0.01 II"