From 4c7d0f5ecc872898bd236e423fbd2be5f8666992 Mon Sep 17 00:00:00 2001
From: Peter McNeeley <petermcneeley@google.com>
Date: Wed, 28 Jan 2026 06:05:12 -0800
Subject: [PATCH] [dawn] Disable extension workgroup zero init on pixel 10

Bug: 479242793
Change-Id: Ie53495eb7d2b9939abb3a17691e49a9f6369b9be
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/287195
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Reviewed-by: Loko Kung <lokokung@google.com>
Commit-Queue: Peter McNeeley <petermcneeley@google.com>
---

diff --git a/src/dawn/native/vulkan/PhysicalDeviceVk.cpp b/src/dawn/native/vulkan/PhysicalDeviceVk.cpp
index c9fa553..f925819 100644
--- a/src/dawn/native/vulkan/PhysicalDeviceVk.cpp
+++ b/src/dawn/native/vulkan/PhysicalDeviceVk.cpp
@@ -1089,10 +1089,11 @@
     // extension is available. Override the decision if it is not applicable or
     // zeroInitializeWorkgroupMemoryFeatures.shaderZeroInitializeWorkgroupMemory == VK_FALSE.
     // Never use the extension on Mali devices due to a known bug (see crbug.com/tint/2101).
+    // Pixel 10 workgroup zero init does not always work as expected (see crbug.com/479242793).
     if (!GetDeviceInfo().HasExt(DeviceExt::ZeroInitializeWorkgroupMemory) ||
         GetDeviceInfo().zeroInitializeWorkgroupMemoryFeatures.shaderZeroInitializeWorkgroupMemory ==
             VK_FALSE ||
-        IsAndroidARM()) {
+        IsAndroidARM() || IsPixel10()) {
         deviceToggles->ForceSet(Toggle::VulkanUseZeroInitializeWorkgroupMemoryExtension, false);
     }
     // By default try to initialize workgroup memory with OpConstantNull according to the Vulkan
diff --git a/webgpu-cts/expectations.txt b/webgpu-cts/expectations.txt
index 9ed6a1a..5419551 100644
--- a/webgpu-cts/expectations.txt
+++ b/webgpu-cts/expectations.txt
@@ -1716,30 +1716,6 @@
 crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,statement,discard:three_quarters:useStorageBuffers=true [ Failure ]
 crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,statement,discard:uniform_read_loop:useStorageBuffers=true [ Failure ]
 crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,statement,phony:executes:case="loop" [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="function";workgroupSize=[1,1,1];batch__=18 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="function";workgroupSize=[1,1,1];batch__=19 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="function";workgroupSize=[1,1,1];batch__=21 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="function";workgroupSize=[1,1,1];batch__=22 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="function";workgroupSize=[1,1,1];batch__=23 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="function";workgroupSize=[1,1,1];batch__=24 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="function";workgroupSize=[1,1,1];batch__=25 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="function";workgroupSize=[1,1,1];batch__=26 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="function";workgroupSize=[1,1,1];batch__=28 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="function";workgroupSize=[1,1,1];batch__=29 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=15 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=16 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=17 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=19 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=20 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=21 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=22 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=23 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=24 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=25 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=26 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=27 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=28 [ Failure ]
-crbug.com/0000 [ android-pixel-10 ] webgpu:shader,execution,zero_init:compute,zero_init:addressSpace="private";workgroupSize=[1,1,1];batch__=29 [ Failure ]
 crbug.com/0000 [ android-pixel-10 ] webgpu:shader,validation,expression,call,builtin,textureSampleBaseClampToEdge:* [ Failure ]
 crbug.com/0000 [ android-pixel-10 ] webgpu:shader,validation,expression,call,builtin,textureSampleBias:* [ Failure ]
 crbug.com/0000 [ android-pixel-10 ] webgpu:shader,validation,expression,call,builtin,textureSampleCompare:* [ Failure ]