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FSX Textures not completely transparent during the day

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Hi everyone. I'm designing a model for my taxiway lights, and it looks decent at night, but during the day the textures are not 100% transparent. See attached pictures. I also included a zip file with the dds textures I'm using for the light splashes.
The day texture is simply a black square with a white alpha channel. Is there a way to make those white squares go away, please?
 

Attachments

  • taxilightsnight.PNG
    taxilightsnight.PNG
    1.5 MB · Views: 278
  • taxilightsday.PNG
    taxilightsday.PNG
    158.5 KB · Views: 261
  • bluesplash.zip
    bluesplash.zip
    13.3 KB · Views: 194
I managed to fix the issue by setting the specular color to pure black ( 0; 0; 0 ) in MCX, but it would be nice if I could skip that step and have Blender export the mdl file with that specular color already set to black. I can't seem to find the option in the FSX toolset though. Does anybody know if it's there, please?
 
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In the unlikely case that anybody cares at all (I'm guessing everyone is focused on MSFS by now), assignining the same black texture with black alpha to the specular mode in blender's FS Toolset did the trick.
 
To get even better results, use One / One in blending options, and use a fully transparent day texture.
But yes, most of us are focused on MSFS these days. ;-)
 
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