Hi all,
after some time I've returned to this and am still having the same issue. HDR Image Based Environment lights seem to just not work properly with glass. I'm attaching some additional tests.
Material is straight from Maxwell wizard, high-grade glass, no alterations, 1m x 1m x 1cm box, in a new 3ds max file, with no alterations to Maxwell settings except for dispersion and multilight enabled.
HDR Image Based Environment, dispersion on, SL13 (notice that not only does the light not pass through the glass, but you also don't see the reflected light):
Sun/sky based environment, dispersion on, SL13 (typical 'black' dielectrics in crossover sections), reflection of light works:
Normal Maxwell emitter (1cm x 1cm), dispersion on, SL13 (typical 'black' dielectrics in crossover sections), reflection of light works:
Maxwell emitter with HDR image (1cm x 1cm), dispersion on, SL10 (typical 'black' dielectrics in crossover sections), reflection of light works:
The fact that it works with an HDR scene emitter, but not the Image Based Environment, makes me think this is a problem within that section of the render engine? No other settings were changed.
Anybody have any idea how to avoid this? I prefer in most cases to use IBE for my work, but if it isn't compatible with glass, that's quite an issue.