CTS render_pass:storeOp tests fail on Vulkan and DX12 if run together, but pass if run separately #8021
Description
On Vulkan and DX12, if run in a single run (i.e. with the test selector webgpu:api,operation,render_pass,storeOp:*), these tests fail with errors like:
** Failures **
[fail] webgpu:api,operation,render_pass,storeOp:render_pass_store_op,multiple_color_attachments:storeOperation1="discard";storeOperation2="discard" (46ms). Log:
- (in subcase: colorAttachments=1) EXPECTATION FAILED: Array had unexpected contents at indices 10 through 127.
Starting at index 9:
actual == 0x: 00 80 3f 00 00 80 3f a6 03 1d 70 a6 03 1d 70 a6 03 1d 70 a6 03 1d 70 cd cc 4c 3f 00 00 40 3f cd cc 4c 3f ...
failed -> xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx ...
expected == 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ...
Error
at AllFeaturesMaxLimitsGPUTest.eventualAsyncExpectation (file:///D:/a/wgpu/wgpu/cts/out/common/framework/fixture.js:258:24)
at AllFeaturesMaxLimitsGPUTest.expectGPUBufferValuesPassCheck (file:///D:/a/wgpu/wgpu/cts/out/webgpu/gpu_test.js:695:10)
at AllFeaturesMaxLimitsGPUTest.expectGPUBufferValuesEqual (file:///D:/a/wgpu/wgpu/cts/out/webgpu/gpu_test.js:711:10)
at AllFeaturesMaxLimitsGPUTest.expectGPUBufferRepeatsSingleValue (file:///D:/a/wgpu/wgpu/cts/out/webgpu/gpu_test.js:755:12)
at AllFeaturesMaxLimitsGPUTest.expectSingleColor (file:///D:/a/wgpu/wgpu/cts/out/webgpu/gpu_test.js:924:10)
at RunCaseSpecific.fn (file:///D:/a/wgpu/wgpu/cts/out/webgpu/api/operation/render_pass/storeOp.spec.js:299:7)
- (in subcase: colorAttachments=1) INFO: subcase ran
- (in subcase: colorAttachments=2) INFO: subcase ran
- (in subcase: colorAttachments=3) INFO: subcase ran
- (in subcase: colorAttachments=4) INFO: subcase ran
If run separately, they pass. They are also passing in Firefox CTS runs.
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