https://bugs.freedesktop.org/show_bug.cgi?id=105464
Bug ID: 105464
Summary: Reading per-patch outputs in Tessellation Control
Shader returns undefined values
Product: Mesa
Version: git
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/Vulkan/radeon
Assignee: mesa-dev@lists.freedesktop.org
Reporter: philip.rebo...@tu-dortmund.de
QA Contact: mesa-dev@lists.freedesktop.org
Created attachment 138037
--> https://bugs.freedesktop.org/attachment.cgi?id=138037&action=edit
Patch for tessellation demo to reproduce the issue
As mentioned in the title, reading a per-patch output variable that was written
by a different invocation produces undefined results even after a barrier()
call.
The attached patch changes the tessellation control shader of the
'tessellation' demo from Sascha Willems' Vulkan samples in that it reads the
tessellation levels from a per-patch output array. Note that the shader needs
to be recompiled manually in order to reproduce the issue.
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