Roll third_party/externals/swiftshader 28f142f1b0a2..6a12e092091c (8 commits)
Roll third_party/externals/swiftshader 28f142f1b0a2..6a12e092091c (8 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/28f142f1b0a2..6a12e092091c


git log 28f142f1b0a2..6a12e092091c --date=short --no-merges --format='%ad %ae %s'
2019-04-30 capn@google.com Refactor image array layer addressing
2019-04-30 capn@google.com Implement OpImageSampleExplicitLod with Grad operand
2019-04-30 capn@google.com Marshal image instruction parameters to the sampling trampoline
2019-04-30 chrisforbes@google.com Fix various descriptor handling bugs
2019-04-29 chrisforbes@google.com Fix BuiltInSubgroupSize in graphics pipeline
2019-04-29 chrisforbes@google.com Enable sampling of 2d array textures
2019-04-29 swiftshader.regress@gmail.com Regres: Update test lists @ 28f142f1
2019-04-29 chrisforbes@google.com Wire up texture border color correctly


Created with:
  gclient setdep -r third_party/externals/swiftshader@6a12e092091c

The AutoRoll server is located here: https://autoroll.skia.org/r/swiftshader-skia-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

CQ_INCLUDE_TRYBOTS=skia.primary:Test-Debian9-Clang-GCE-GPU-SwiftShader-x86_64-Debug-All-SwiftShader
TBR=ethannicholas@google.com

Change-Id: I51ee7c9d49f736758a76b819baa0d233e17ed2b5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211211
Reviewed-by: skia-autoroll <e034c62197df5622a9c1bef8b3e012f87a0a9840@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <e034c62197df5622a9c1bef8b3e012f87a0a9840@skia-public.iam.gserviceaccount.com>

aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,HalCanary/skia-hc,aosp-mirror/platform_external_skia,HalCanary/skia-hc,HalCanary/skia-hc,google/skia,HalCanary/skia-hc,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,HalCanary/skia-hc,google/skia,google/skia,HalCanary/skia-hc,google/skia,HalCanary/skia-hc,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,HalCanary/skia-hc,HalCanary/skia-hc,HalCanary/skia-hc