http://article.gmane.org/gmane.comp.video.mesa3d.devel/12006
http://www.opengl.org/registry/specs/ARB/texture_float.txt
"IP Status
SGI owns US Patent #6,650,327, issued November 18, 2003. SGI believes this patent contains necessary IP for graphics systems implementing floating point (FP) rasterization and FP framebuffer capabilities.
SGI will not grant the ARB royalty-free use of this IP for use in OpenGL, but will discuss licensing on RAND terms, on an individual basis with companies wishing to use this IP in the context of conformant OpenGL implementations. SGI does not plan to make any special exemption for open source implementations."
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=P...
Я одного не понял - ребятки решили нажиться, запатентовав до кучи не только аппаратные реализации, но и формат хранения данных во фреймбуфере ?!
