Clamp negative sigma to 0 in SkDropShadowImageFilter.
authorsenorblanco@chromium.org <senorblanco@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81>
Tue, 28 Jan 2014 17:57:26 +0000 (17:57 +0000)
committersenorblanco@chromium.org <senorblanco@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81>
Tue, 28 Jan 2014 17:57:26 +0000 (17:57 +0000)
commit74bdde0d50f45c5848381ec207c1464b70a48ee3
tree40f2e541bc8a38385c70d95d3e2691f004c243c5
parentc1587f94a77eaafe257a6ecf504364d40362c66a
Clamp negative sigma to 0 in SkDropShadowImageFilter.

This can occur when the matrix includes a perspective transform.

BUG=skia:2094
R=bsalomon@google.com

Review URL: https://codereview.chromium.org/137833004

git-svn-id: http://skia.googlecode.com/svn/trunk@13220 2bbb7eff-a529-9590-31e7-b0007b416f81
src/effects/SkDropShadowImageFilter.cpp