https://bugs.freedesktop.org/show_bug.cgi?id=108925
Bug ID: 108925
Summary: vkCmdCopyQueryPoolResults(VK_QUERY_RESULT_WAIT_BIT)
for timestamps with large query count hangs
Product: Mesa
Version: git
Hardware: Other
OS: All
Status: NEW
Severity: major
Priority: medium
Component: Drivers/Vulkan/radeon
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
Created attachment 142700
--> https://bugs.freedesktop.org/attachment.cgi?id=142700&action=edit
Test case
According to the Vulkan spec we need VK_QUERY_RESULT_WAIT_BIT here to ensure
that all previous query commands have written a result. Using that on RADV with
a large query count causes a GPU hang.
Attached a test case which reproduces this. Hangs for me on a Vega 64, with
latest git master and 18.3 branch. Doesn't hang if the query count is reduced
(in my testing, 512 queries hangs but 256 doesn't), or if
VK_QUERY_RESULT_WAIT_BIT is not used.
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