Roll SwiftShader from edeff1f2e7db to f12305c3a0d9 (4 revisions)

https://swiftshader.googlesource.com/SwiftShader.git/+log/edeff1f2e7db..f12305c3a0d9

2021-11-26 capn@google.com Statically allocate function pointer tables for libXCB
2021-11-26 capn@google.com Statically allocate function pointer tables for libX11
2021-11-26 capn@google.com Refactor libXCB and libX11 wrappers
2021-11-26 ari.suonpaa@siru.fi Fix component normalization for texture gather

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/swiftshader-skia-autoroll
Please CC tdenniston@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in SwiftShader: https://bugs.chromium.org/p/swiftshader/issues/entry
To file a bug in Skia: https://bugs.chromium.org/p/skia/issues/entry

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

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

Cq-Include-Trybots: skia/skia.primary:Test-Debian10-Clang-GCE-GPU-SwiftShader-x86_64-Debug-All-SwiftShader
Bug: None
Tbr: tdenniston@google.com
Change-Id: Iff3d30358d255724a84ad0379453d9f3ee3e3f86
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/476956
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index fd7adeb..50eb480 100644
--- a/DEPS
+++ b/DEPS
@@ -40,7 +40,7 @@
   "third_party/externals/spirv-cross"     : "https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Cross@0e2880ab990e79ce6cc8c79c219feda42d98b1e8",
   "third_party/externals/spirv-headers"   : "https://skia.googlesource.com/external/github.com/KhronosGroup/SPIRV-Headers.git@814e728b30ddd0f4509233099a3ad96fd4318c07",
   "third_party/externals/spirv-tools"     : "https://skia.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git@4b092d2ab81854e61632bdd1e658907f0071c37e",
-  "third_party/externals/swiftshader"     : "https://swiftshader.googlesource.com/SwiftShader@edeff1f2e7dbc2f6e04b1022f84959b584e4e740",
+  "third_party/externals/swiftshader"     : "https://swiftshader.googlesource.com/SwiftShader@f12305c3a0d9258c223f7bad5816a6a2fc5d8c27",
   #"third_party/externals/v8"              : "https://chromium.googlesource.com/v8/v8.git@5f1ae66d5634e43563b2d25ea652dfb94c31a3b4",
   "third_party/externals/wuffs"           : "https://skia.googlesource.com/external/github.com/google/wuffs-mirror-release-c.git@600cd96cf47788ee3a74b40a6028b035c9fd6a61",
   "third_party/externals/zlib"            : "https://chromium.googlesource.com/chromium/src/third_party/zlib@c876c8f87101c5a75f6014b0f832499afeb65b73",