Metal: Disable fence sync extension on Nvidia

The following tests are flaky on Mac FYI Retina Release (NVIDIA), so the Metal fence sync extension is being disabled for Nvidia. Bug: chromium:1136673 Change-Id: I7e99f558950c6e867318e27f27bb526b4c209fcc Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2463516 Commit-Queue: Tim Van Patten <timvp@google.com> Reviewed-by: Kai Ninomiya <kainino@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

Metal: Disable fence sync extension on Nvidia
87f3f4b5 · Tim Van Patten · Commit Bot · 5081f89b · 87f3f4b5
Commit 87f3f4b5 authored Oct 09, 2020 by Tim Van Patten Committed by Commit Bot Oct 10, 2020
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DisplayMtl.mm src/libANGLE/renderer/metal/DisplayMtl.mm +3 -1

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--- a/src/libANGLE/renderer/metal/DisplayMtl.mm
+++ b/src/libANGLE/renderer/metal/DisplayMtl.mm
@@ -728,7 +728,9 @@ void DisplayMtl::initializeFeatures()
    ANGLE_FEATURE_CONDITION((&mFeatures), hasTextureSwizzle,
                            isMetal2_2 && supportsEitherGPUFamily(1, 2));

-    ANGLE_FEATURE_CONDITION((&mFeatures), hasEvents, isMetal2_1);
+    // http://crbug.com/1136673
+    // Fence sync is flaky on Nvidia
+    ANGLE_FEATURE_CONDITION((&mFeatures), hasEvents, isMetal2_1 && !isNVIDIA());

 #if !TARGET_OS_MACCATALYST && (TARGET_OS_IOS || TARGET_OS_TV)
    // Base Vertex drawing is only supported since GPU family 3.