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MSFS24 Rendering GDI+ WASM gauge as a transparent screen overlay

Misho

Misho

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ca-ontario
I need to have a WASM gauge rendered as a screen overlay, while keeping transparency, (much like HUD), but without mapping it to a 3D surface in my model - basically, I’d like to use is_hud and render_on_screen together. (Parameters in panel.cfg)

I am using GDI+ gauge (as opposed to NanoVG). I tried render_on_screen with transparency, (without is_hud), where I clear the background with color(0,0,0) and it does work, but there is no clearing of the previous screen… so things that change get drawn without older things being cleared. When rendered, it turns into a mess. Without transparency, it works well, but it has to have a solid color background.

All I need is an overlay that shows some dynamic data displayed. Is that possible? I can work with HUD setup as well, but I want to avoid rendering into a 3D part with Texture parameter. I am wondering if NanoVG would have more flexibility in the way the background is cleared?
 
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