Hi, in case anyone is interested, I have implemented the floating-point formats from GL_ARB_texture_rg, namely R16F, RG16F, R32F, RG32F, for both core Mesa and st/mesa. The commits are here: <a href="http://cgit.freedesktop.org/~mareko/mesa/commit/?h=floating2&id=a68e9890451140f493d09f1dd2dd8dfc77ed29de">http://cgit.freedesktop.org/~mareko/mesa/commit/?h=floating2&id=a68e9890451140f493d09f1dd2dd8dfc77ed29de</a> <a href="http://cgit.freedesktop.org/~mareko/mesa/commit/?h=floating2&id=7216311b553bcc9331492d4d03a25d36348567d5">http://cgit.freedesktop.org/~mareko/mesa/commit/?h=floating2&id=7216311b553bcc9331492d4d03a25d36348567d5</a> FWIW there is also experimental support of floating-point rendering for r300g in that 'floating2' branch, and trivial support of GL_ATI_texture_float. It's based on Luca's 'floating' branch. BTW, is there any progress on the floating-point patent matter? We should probably also take into account non-US Linux distributions like some variants of Mint, because they don't have to care about software patents and they already freely distribute patented stuff like some multimedia codecs. I think they would use whatever Mesa has to offer, patented or not. Best regards, Marek