I made the flame as a vertex model,. (using an extruded circle),. it’s a separate poly-mesh, but still part of the main candle model.
Doing it that way, allows you to create a shading domain, and shader, for that part,. ...make the “flame” shader a “Lux Area Light”
I’m not sure that using a “Billboard” of crossed planes, with an alpha image applied to them, will work the same way, since an Area light should use the mesh it’s applied to,. Like “Anything glows” lights in Carrara.
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