Mapbase v7.2 Linux fixes

[Blixibon]

This is in a separate PR until the fixes are verified.

[samisalreadytaken]

Probably related, this here on Linux ignores the directory (vgui/) escape

source-sdk-2013/sp/src/game/client/mapbase/vscript_vgui.cpp

Line 430 in af6f9fe

V_snprintf( fileName, sizeof( fileName ), "../%s", imageName );

Can be tested with

local panel = vgui.CreatePanel( "ImagePanel", vgui.GetClientDLLRootPanel(), "" );
panel.MakeReadyForUse();
panel.SetVisible( true );
panel.SetPaintEnabled( true );
panel.SetPaintBackgroundEnabled( true );
panel.SetSize( 256, 256 );
panel.SetPos( 0, 0 );
panel.SetImage( "brick/brickfloor001a", false );

[Blixibon]

Probably related, this here on Linux ignores the directory (vgui/) escape

source-sdk-2013/sp/src/game/client/mapbase/vscript_vgui.cpp

Line 430 in af6f9fe

V_snprintf( fileName, sizeof( fileName ), "../%s", imageName );

Can be tested with

local panel = vgui.CreatePanel( "ImagePanel", vgui.GetClientDLLRootPanel(), "" );
panel.MakeReadyForUse();
panel.SetVisible( true );
panel.SetPaintEnabled( true );
panel.SetPaintBackgroundEnabled( true );
panel.SetSize( 256, 256 );
panel.SetPos( 0, 0 );
panel.SetImage( "brick/brickfloor001a", false );

I'm not experiencing this issue on my Linux machine. When running the test code, the brick floor texture doesn't render properly due to its shader, but the directory escape successfully navigates to the file.

[samisalreadytaken]

Using brick material (which was a blind example) or a custom material in a custom directory under custom addon mount seems to work indeed. So I don't know what exactly is going on here when the following works only when the materials are put under vgui/. I'm unable to test this further at the moment

[Blixibon]

That's fine. I'm not in a good position to spend too much time on this myself, so I've opened an issue for it (#252) that can be resolved later.