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When you say you're not "catching" reflected glare I assume you mean you don't see an accurate specular reflection. This is a tricky one to get right, especially for a climate-based annual modality. Generally speaking, the best option is to use photon mapping, which is supported on more recent versions of Radiance (I see an Ecotect reference in your environment and assume you're using an older Radiance version).

This presentation may pique your interest (https://www.radiance-online.org/community/workshops/2014-london/presentations/day3/Brotas_SolarReflectedGlare.pdf), and for more useful discussion I encourage you to repost your question tot he Radiance-online Discourse forum, where the developer of the photon map module in Radiance (Roland Schregle) lives. =)

When you say you're not "catching" reflected glare I assume you mean you don't see an accurate specular reflection. This is a tricky one to get right, especially for a climate-based annual modality. Generally speaking, the best option is to use photon mapping, which is supported on more recent versions of Radiance (I see an Ecotect reference in your environment and assume you're using an older Radiance version).

This presentation may pique your interest (https://www.radiance-online.org/community/workshops/2014-london/presentations/day3/Brotas_SolarReflectedGlare.pdf), and for more useful discussion I encourage you to repost your question tot he to the Radiance-online Discourse forum, where the developer of the photon map module in Radiance (Roland Schregle) lives. =) lives:

https://discourse.radiance-online.org/