On 10/11/2012 03:23 AM, Nathan Coulson wrote: > > Just wondering, but do we want to use enable-texture-float by default? > The developers were worried about potential patent issues. > > Perhaps as an optional flag, pointing at > http://cgit.freedesktop.org/mesa/mesa/tree/docs/patents.txt?h=8.0 for > those who choose to enable it. > > http://www.phoronix.com/scan.php?page=news_item&px=OTMzMg >
Most distros have that feature enabled by default. I've pointed out patent issue ever since I put the instruction there, but it seems no one reads "Command Explanations" Command Explanations --enable-texture-float: This switch enables floating-point textures and render buffers. Please consult docs/patents.txt to see if there are any legal issues if you use this feature. Patents do not pose a problem outside of US and Germany today, even tough many countries claim to have that law. These are ones that "care the most". http://anonscm.debian.org/gitweb/?p=pkg-xorg/lib/mesa.git;a=blob;f=debian/rules;h=551cb7586d4f3b76a307ce279614a1b918b90e59;hb=HEAD http://anonscm.debian.org/gitweb/?p=pkg-xorg/lib/mesa.git;a=blob;f=debian/rules;h=e059404327daa3f94b38ebb492d012ee72b3a873;hb=refs/heads/ubuntu https://projects.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/mesa Debian, Ubuntu and Archlinux seem to enable that flag by default and shipt it, while Gentoo does not even provide a way to enable it by default in portage. I don't think that this might be patent infrigment from the user side, but from the developer side - implementing patented stuff into software that has not been granted permissions to do so. Another story was S3TC stuff. I tought about adding an external library that implements S3 Texture Compression (libtxc_dxtn library) into Mesa instructions, but I didn't do that. -- http://linuxfromscratch.org/mailman/listinfo/blfs-dev FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
