Module: Mesa Branch: master Commit: 18883cdf2334511005973155fc517eb678dc0043 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=18883cdf2334511005973155fc517eb678dc0043
Author: Vinson Lee <[email protected]> Date: Thu Oct 1 13:33:20 2009 -0600 mesa: Return -FLT_MAX instead of 0 for LG2(0). lim x->0 log(x) = -inf so -FLT_MAX is a better approximation than 0 for LG2(0). --- src/mesa/shader/prog_execute.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/mesa/shader/prog_execute.c b/src/mesa/shader/prog_execute.c index 69b81e7..192d39a 100644 --- a/src/mesa/shader/prog_execute.c +++ b/src/mesa/shader/prog_execute.c @@ -939,7 +939,7 @@ _mesa_execute_program(GLcontext * ctx, /* The fast LOG2 macro doesn't meet the precision requirements. */ if (a[0] == 0.0F) { - val = 0.0F; + val = -FLT_MAX; } else { val = log(a[0]) * 1.442695F; _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
