Why can't I get a spot light to work in shadowtest?

[jwwalker]

I tried to change the shadowtest sample to use a spot light instead of a sun light, by changing the code that builds the light to this:

        LightManager::Builder(LightManager::Type::SPOT)
            .intensity(1.1e8)
            .direction({ 0.0, -1.0, 0.0 })
            .position({ 0.0, 2.0, -4.0 })
            .falloff(100.0)
            .spotLightCone( 1.0, 1.0 )
            .castShadows(ENABLE_SHADOWS)
            .build(*engine, app.light);

I can see that the monkey is lit from above, but there is no trace of shadow on the ground plane. What am I missing?

[romainguy]

The ground plane is a special invisible shadow receiver meant for AR and it only supports directional shadows.

[jwwalker]

OK, is there someplace in the documentation that would tell me that the ground plane only supports directional shadows? For instance, the discussion of the shadowMultiplier attribute in the Filament Materials Guide doesn't say anything about that.

[bejado]

I'll update our documentation.