From: Daryll S. <da...@va...> - 2000-09-22 17:43:26
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On Fri, Sep 22, 2000 at 09:10:24AM -0700, Ian D Romanick wrote: > Is this extension going to only be supported on 3dfx hardware or will there > be a software fallback? It sure would be nice to make sure that one's code > works right with the FXT1 textures without having to go out and buy a Voodoo > 4/5/6. The same could also be done with S3TC format textures, I suppose. I don't think there are plans for software fallbacks, but in reality you are much better off using non-compressed textures than using software fallbacks. What really happens is that other drivers that don't implement the feature don't advertise and it and the application doesn't use it. I am not a lawyer, but from what I understand FXT1 can be implemented in software, because 3dfx made it open source and even provided code to do so. S3TC is very heavily protected and I wouldn't want to go near it for a software implementation for fear of legal issues. > If this is not work that is currently planned, could someone perhaps provide > some guidance for others that might want to try and tackle this? Guidance: FXT1 should be portable, but isn't useful unless the hardware you're using supports FXT1. S3TC is supported on lots of hardware, but due to legal restraints I wouldn't go near it. - |Daryll |