Area light on PBR materials and shadow casting ability

[tawibox]

@sebavan

Yes, I observed sth does feel like a bug for rectAreaLight.
I created a separate post here:

Specular channel issue on Rectangular Area Light

Hey community, @srzerbetto @sebavan @Deltakosh Been trying the new rectangular area light lately, and I found some potential issue: The specular of RectAreaLight seems not picking up the correct color values See test renders: [AnisotropyBarnLamp_contactSheet_9_texted] [DamagedHelmet_contactSheet_9_texted] [FlightHelmet_contactSheet_9_texted] [MaterialsVariantsShoe_contactSheet_9_texted] The test contact sheets are organized as follows: Top row: Displays the new RectAreaLight, show…