Hi Wojtek!

 First thanks for the quick response. You wrote:

> DDS files are not compressed for file storage and they
> don't require decompression which means they load quite
> quicly. PNG and JPG require this. 

If you say, DDS files are not compressed, the DXTn compression doesn't matter, 
because the algorithms are hardware accelerated?
Did this features (being not compressed) pays off even if I write my scene into 
an IVE-file and load this file later on in another OSG application? I would say 
no, because PNG and JPG textures will also be stored decompressed, isn't it?


> DDS in OSG has support for a number of most used pixel 
> formats (but not all) and 2D & 3D textures. I am not
> 100% sure here but CubeMaps and Texture Arrays are not
> supported yet by OSG DDS reader writer. 

Okay, than I have to check for example the GIMP plug-in for writing DDS files 
because my currently used graphic application writes only RGB(A).


> But there is one issue you should be aware about. DDS is 
> simple wrap of DirectDrawSurface texture.

I'm already aware of this issue (because I searched the forum about DDS and 
found a thread about flipped DDS textures) but nevertheless thanks for the hint.

Best regards,
--  
Andreas Richter
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