On Wed, Mar 31, 2010 at 04:34:48AM +0200, Marek Olšák wrote: > On Tue, Mar 30, 2010 at 10:26 AM, Nicolai Haehnle <nhaeh...@gmail.com>wrote: > > > > Note that my Git repository already contains an implementation of > > branch emulation and some additional optimizations, see here: > > http://cgit.freedesktop.org/~nh/mesa/log/?h=r300g-glsl<http://cgit.freedesktop.org/%7Enh/mesa/log/?h=r300g-glsl> > > > > Shame on me for abandoning it - I should really get around to make > > sure it fits in with recent changes and merge it to master. The main > > problem is that it produces "somewhat" inefficient code. Adding and > > improving peephole and similar optimizations should help tremendously. > > > > Well it's either this or nothing so I guess I am not the only one to prefer > to get it merged. ;) However that kinda slightly changes Tom's plan for the > GSoC project. > > On a different note, considering that the r300 compiler has basically 2 > frontends (Mesa IR and TGSI) and 3 backends (r300 VS & FS, r500 FS), would > it be feasible to add yet another backend - TGSI? That would turn the > compiler into a generic Gallium shader optimizer with the lowering tools it > already has (or will have) and more people would be interested in adding new > features and improvements in it. >
Implementing branch emulation with TGSI was something I have been thinking about doing, so maybe it would make sense to try and focus on doing more of the optimizations with TGSI and creating a generic Gallium shader optimizer, like you said. Even though Nicolai's branch only involves the r300 compiler, it will still be a good guide for me if I am implementing something similar with TGSI. -Tom ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Mesa3d-dev mailing list Mesa3d-dev@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
