Add imgblur tool to assist BlurMaskFilter debugging

Add imgblur tool to assist BlurMaskFilter debugging

imgblur is intended to establish a ground truth for debugging mask blur issues. It performs a brute force (non-separable) Gaussian blur of the provided image.

The blur code itself is in sk_tools_utils so it can be more easily used programmatically in other places (e.g., blur unit tests).

Committed: https://skia.googlesource.com/skia/+/9c4909b50ff9d0fdf9bce2a67cd459aeb28cdc3c

[robertphillips, 2015-10-04 18:05:42]

robertphillips@google.com changed reviewers:
+ reed@google.com

[robertphillips, 2015-10-04 18:06:08]

The CQ bit was checked by robertphillips@google.com to run a CQ dry run

[commit-bot: I haz the power, 2015-10-04 18:06:20]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1384203002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1384203002/1

[commit-bot: I haz the power, 2015-10-04 18:12:50]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-10-04 18:12:50]

Dry run: This issue passed the CQ dry run.

[reed1, 2015-10-05 14:41:05]

How close are the results of the new code to what we ship (raster and gpu)?

[robertphillips, 2015-10-06 12:24:28]

With https://codereview.chromium.org/1378023004/ (Have GrRectBlurEffect use
Linear filtering (rather than Nearest Neighbor)) the match is good for the GPU
path. I will have to check on raster.

[reed1, 2015-10-06 16:39:07]

lgtm

[robertphillips, 2015-10-07 12:09:48]

The CQ bit was checked by robertphillips@google.com

[commit-bot: I haz the power, 2015-10-07 12:09:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1384203002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1384203002/1

[commit-bot: I haz the power, 2015-10-07 12:10:47]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-10-07 12:10:48]

Try jobs failed on following builders:
  Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-Trybot on client.skia (JOB_FAILED,
http://build.chromium.org/p/client.skia/builders/Test-Ubuntu-GCC-GCE-CPU-AVX2...)
  Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-Shared-Trybot on client.skia
(JOB_FAILED,
http://build.chromium.org/p/client.skia/builders/Test-Ubuntu-GCC-GCE-CPU-AVX2...)
  Build-Ubuntu-Clang-x86_64-Debug-Trybot on client.skia.compile (JOB_FAILED,
http://build.chromium.org/p/client.skia.compile/builders/Build-Ubuntu-Clang-x...)
  Build-Ubuntu-GCC-Arm64-Debug-Android-Trybot on client.skia.compile
(JOB_FAILED,
http://build.chromium.org/p/client.skia.compile/builders/Build-Ubuntu-GCC-Arm...)
  Build-Ubuntu-GCC-Mips-Debug-Android-Trybot on client.skia.compile (JOB_FAILED,
http://build.chromium.org/p/client.skia.compile/builders/Build-Ubuntu-GCC-Mip...)
  Build-Ubuntu-GCC-x86_64-Release-Trybot on client.skia.compile (JOB_FAILED,
http://build.chromium.org/p/client.skia.compile/builders/Build-Ubuntu-GCC-x86...)

[robertphillips, 2015-10-17 21:17:29]

The CQ bit was checked by robertphillips@google.com to run a CQ dry run

[commit-bot: I haz the power, 2015-10-17 21:17:36]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1384203002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1384203002/20001

[commit-bot: I haz the power, 2015-10-17 21:26:37]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-10-17 21:26:37]

Dry run: This issue passed the CQ dry run.

[robertphillips, 2015-10-19 13:29:03]

The CQ bit was checked by robertphillips@google.com

[robertphillips, 2015-10-19 13:29:03]

The patchset sent to the CQ was uploaded after l-g-t-m from reed@google.com
Link to the patchset: https://codereview.chromium.org/1384203002/#ps20001
(title: "update to ToT")

[commit-bot: I haz the power, 2015-10-19 13:29:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1384203002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1384203002/20001

[commit-bot: I haz the power, 2015-10-19 13:39:20]

Committed patchset #2 (id:20001) as
https://skia.googlesource.com/skia/+/9c4909b50ff9d0fdf9bce2a67cd459aeb28cdc3c