Right now the color of photons can be detected using DTEC and 'copied' to surrounding FILT. FILT already works perfectly fine with BRAY, but DTEC sadly just ignores it. I suggest to make DTEC treat BRAY the same as photons.

I know this sounds like a minor issue to most people, but believe it or not, it heavily impedes the creation of fast electronic devices. I am working on a new computer with Rawing right now (as always :-P) which could probably work twice as fast (That's about 4 frames per clock!) if this was implemented.

EDIT:

I've implemented the feature. All that is necessary is to add the following lines after line 89 in DTEC.cpp:

else if (parts[r>>8].type == PT_BRAY) // check whether the particle is BRAY
{
    photonWl = parts[r>>8].ctype;  // copy the color of the BRAY
    photonWl = photonWl ? photonWl : 0x3fffffff;  // if the color of the bray hasn't been set (it is still white) make the FILT white as well
}