use a tent filter for sigma larger than 132
Originally, the cpu blur code could only deal with sigma <= 132. This
is due to limiting the gaussian to using a uint32_t for accumulation.
This change adds a tent filter for sigma > 132 but less < 2183. The
upper limit is not a problem because the GPU code limits sigma to 535
for both GPU and CPU. The output for GPU and CPU should be very
similar now.
Bug = skia:12338
Change-Id: I12299373911f42b914ee329a02ca81bdbd0763bd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/440545
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
1 file changed