-----Original Message----- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of John Moore
> I think I found the osg plugin to decompress PVR but I don't know how to use > it. > > Do you have any idea? OK, a brief look at the definitions of the PVRTC OpenGL extension and the osg code suggests that osg::Texture knows about the following compressed texture formats: GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG You ought to be able to specify those as the Internalformat for your texture objects somehow. Actually by calling osg::Texture:: setInternalFormatMode(osg::Texture::USE_PVRTC_2BPP_COMPRESSION) or USE_PVRTC_4BPP_COMPRESSION. I'm not sure if osg or the drivers will do the compression for you (S3TC compression works like that on Windows, Linux and OSX), or whether you have to pass in the data you compressed with the tool. This Apple sample code: https://developer.apple.com/LIBRARY/IOS/samplecode/PVRTextureLoader/Introduction/Intro.html should show you the raw OpenGL way of dealing with compressed textures. Alternatively the PowerVR Insider SDK should have more samples, covering other platforms if need be: http://www.imgtec.com/powervr/insider/sdkdownloads/index.asp Alistair Baxter Software Engineer ________________________________ Have you downloaded your FREE copy of FieldMove Clino? Find out more about our app for iPhone and Android smartphones: http://news.mve.com/fieldmoveclino Midland Valley Exploration Ltd. 144 West George Street Glasgow G2 2HG United Kingdom Tel: +44 (0) 141 332 2681 Fax: +44 (0) 141 332 6792 The structural geology experts _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
