diff options
| author | Vinson Lee <vlee@vmware.com> | 2009-10-01 13:33:20 -0600 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2009-10-01 13:33:20 -0600 |
| commit | 18883cdf2334511005973155fc517eb678dc0043 (patch) | |
| tree | c4621af747a5073bbfa4abfe69f5752ed098adb2 /src/mesa | |
| parent | 521e4b9b7e3c79e7362f7cbd594a2e8cf74cdfe4 (diff) | |
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).
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | 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 69b81e724a..192d39aed1 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; |