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Posted 04 July 2012 - 06:11 AM
Check the link I posted earlier They show that the quality result is very good, but there's quite a few ALU ops required in the decoding. However, seeing as your vertex shader is performing texture fetches, then you're going to get a certain amount of ALU ops "for free" anyway to cover that fetch latency.
Posted 04 July 2012 - 06:07 AM
Check the link I posted earlier