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Anyone know of an app that explicitly encodes RGTC compression. It seems that all the resources I can find basically tell engine devs to convert BC5 to RGTC on-the-fly.
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AFAIK, BC5 is just a DX10-alias for the OGL3 RGTC, i.e. they are the same.
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I encoded one and the texture viewers all call it ATI2N. So I'm not sure how to get the DDS wrapper to report RGTC. I am guessing that most engines are ignoring the wrapper somehow. It seems that Doom 3 does a detection though...
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OK, so I need to ensure I have BC5U as an encode option to get RGTC2.
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