you don't treat pass through materials specially
paco wrote:I'm not sure what you mean... do you just mean materials that are mixed with a null, general transmissive materials, or specular transmissive materials? I must admit I thought that bidir handled all of those (via the sample method)?
paco wrote:Actually I'm thinking of going back to simple path as I currently use - the bidir implementation above doesn't handle a specular surface well due to having to call F() when connecting paths (which is 0 for specular) whereas path consistently uses the sampleF() method which can handle that.
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