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[CP-stable]Denylists b-series powervr from vulkan (flutter#191903)
This pull request is created by [automatic cherry pick workflow](https://github.com/flutter/flutter/blob/main/docs/releases/Flutter-Cherrypick-Process.md#automatically-creates-a-cherry-pick-request) Please fill in the form below, and a flutter domain expert will evaluate this cherry pick request. ### Issue Link: What is the link to the issue this cherry-pick is addressing? - flutter#181315 - flutter#191457 - flutter#191351 ### Impact Description: What is the impact (ex. visual jank on Samsung phones, app crash, cannot ship an iOS app)? Does it impact development (ex. flutter doctor crashes when Android Studio is installed), or the shipping of production apps (the app crashes on launch). This information is for domain experts and release engineers to understand the consequences of saying yes or no to the cherry pick. There are a slew of oddities associated with this GPU, graphical glitches and suboptimal performance. ### Changelog Description: Explain this cherry pick: * In one line that is accessible to most Flutter developers. * That describes the state prior to the fix. * That includes which platforms are impacted. See [best practices](https://github.com/flutter/flutter/blob/main/docs/releases/Hotfix-Documentation-Best-Practices.md) for examples. [flutter/181315] When using Impeller on Android devices with B-Series PowerVR GPUs, visual oddities and performance drops can be experienced. ### Workaround: Is there a workaround for this issue? No. ### Risk: What is the risk level of this cherry-pick? ### Test Coverage: Are you confident that your fix is well-tested by automated tests? ### Validation Steps: What are the steps to validate that this fix works? This just reverts us to a preexisting state and sends these devices down a well known path.
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‎engine/src/flutter/impeller/renderer/backend/vulkan/driver_info_vk.cc‎

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@@ -422,7 +422,7 @@ bool DriverInfoVK::IsKnownBadDriver() const {
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// https://github.com/flutter/flutter/issues/160866
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// https://github.com/flutter/flutter/issues/160804
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// https://github.com/flutter/flutter/issues/160406
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if (powervr_gpu_.has_value() && powervr_gpu_.value() < PowerVRGPU::kBXE) {
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if (powervr_gpu_.has_value() && powervr_gpu_.value() < PowerVRGPU::kCXT) {
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return true;
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}
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return false;

‎engine/src/flutter/impeller/renderer/backend/vulkan/driver_info_vk_unittests.cc‎

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@@ -299,7 +299,7 @@ TEST(DriverInfoVKTest, PowerVRBSeries) {
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})
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.Build();
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EXPECT_FALSE(context->GetDriverInfo()->IsKnownBadDriver());
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EXPECT_TRUE(context->GetDriverInfo()->IsKnownBadDriver());
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EXPECT_EQ(context->GetDriverInfo()->GetPowerVRGPUInfo(),
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std::optional<PowerVRGPU>(PowerVRGPU::kBXM));
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}

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