From: Thomas Helland <thomashellan...@gmail.com> When writing that A || (A && B) patch some days ago I also wrote some other patches that have no impact on my collection of shaders. (shader-db + Some TF2 and Portal-shaders). No reduction in instruction count, and no significant increase in compilation time.
I decided to put them up here anyway, as with your collection of shaders maybe YMMV. These are mostly RFC-quality, and not all are as complete and nicely formatted as they could be. Possibly some are also implemented incorrectly. (I'm still trying to get a good understanding of the buildup of the ir, the visitors, etc) Feel free to do with these patches as you please; Ignore, test, review, flame, make cookies... Thomas Helland (10): glsl: Optimize X - X -> 0 glsl: Optimize !A || A == 1 glsl: Optimize !A && A == 0 glsl: Optimize (A || B) && A == A glsl: Optimize min(-8, sin(x)) == -8 and similar glsl: Optimize max(8, sin(x)) == 8 and similar glsl: Optimize log(x) + log(y) == log(x*y) glsl: Optimize exp(x)*exp(y) == exp(x+y) glsl: Optimize A - neg(B) == A + B and neg(A) - B == neg(A + B) glsl: Optimize some more pow() special cases src/glsl/opt_algebraic.cpp | 152 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 152 insertions(+) -- 2.0.0 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
