> If you take a magnifying glass to a real CRT and look at what it's displaying, it > simply isn't the same as what's being outputted on an LCD using HLSL, and I was under > the impression that the whole point of HLSL was to be able to make LCDs look like > CRTs (?).
You can't simulate a CRT on an LCD by copying the CRT's shadow mask. LCDs simply are not bright enough for this yet. Even if a LCD is overall brighter than a CRT, its individual pixels are not. On a CRT, only a portion of its surface actually glows, but it glows a lot. You can test this easily with Paint by drawing a pattern of red, green and blue pixels one after the other at their top brightness (255). What you get on your LCD is grey, instead of white. That's why HLSL needs to use plain colors to achieve an acceptable level of brightness and its probably the best that can be done.