To enable better viewport preview in 3ds Max, switch from "Standard" to "High Quality" in the viewport settings:
Click "Realistic Materials with Maps" in the "Materials" submenu:
Enable "Environment Background" in the "Viewport Background" submenu under "Default Shading":
Viewport shading, however, does not always appear to provide an accurate approximation of the in-browser rendering. Particularly, environment reflections ignore normal maps as can be seen with the default Verge3D cube.
Verge3D rendering strives to be as close as possible to Scanline render if standard materials are used, and to ART render if physical materials are used. So you can preview your scenes in 3ds Max without exporting for quicker tweaking.
To select the renderer, click "Render Setup..." in the "Rendering" menu (F10):
In the window use the Renderer dropdown to switch between Scanline and ART:
To render a scene, click "Render" (Shift+Q):
Subsequently you can use the "Render" button to repeat your render:
For faster iterations, you can use the "ActiveShade" mode which automatically updates the render every time you modify a scene (works best with ART render).
You can enable ActiveShade in the "Render Setup..." window:
After that you'll be able to switch a viewport to ActiveShade mode:
As a result, you'll obtain a better approximation of what you'll get in the browser: