Hi, the address reg in tgsi is quite a nuisance. glsl-to-tgsi code assumes that indirections can only be done through the address reg and has quite some extra code to deal with this. Even though hardware and apis which worked like that are definitely old by now. Thus, I'm proposing the address reg be nuked. I am however not quite sure what the implications for drivers are, other than I'm certain llvmpipe can handle that already. For that reason, I suspect at least initially a new cap bit would be required so glsl-to-tgsi would skip the extra code. I tend to think longer term it would be great if it could be nuked completely, I am however not sure if that is easily done with drivers for old hw (such as r300) - I guess if necessary we could keep operations such as ARL (or even ARR though clearly not UARL!) and just define them to be usable with temp regs.
Opinions? Roland _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
