(xpdev)

*Quote -   no one applies that technique (lightsource emitter object) to get lit environments like in the pictures I posted.

possibile that no one has any idea how to do ?*

     Yes, Folks do use emitters to light scenes - especially enclosed interiors.

     The thread which believable3D posted [PP2012 IDL] is the prime IDL tut source in this forum.  Granted that the examples were photo studio setups, but an emitter-lit room is just the same technique writ large.

     The [P9/PP2012 mesh light thread] which I cited addresses the mechanics of making emitters and using them as the sole light source for a room.  While MrSparky and I were using a more sci-fi/fantasy render style, the technique is the same.  Photo-realistic rendering simply requires more irradiance caching, IDL quality, raytrace bounces, and samples - at the cost of longer render times, of course.

     The [P8/PP2010 IDL thread] explains how to make and use emitters within the restrictions of P8/PP2010's lesser capabilities.

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