Fix kernel width calculation in GPU-based Gaussian blur.  When converting the
sigma value to a kernel width, it should be rounded up.  Otherwise, for small
sigmas, the edge pixels of the kernel may be missing.



git-svn-id: http://skia.googlecode.com/svn/trunk@1891 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed