If the stencil clear value was larger than the maximum supported by the hardware
(255) then it would end up corrupting other fields in TA_STATE_ISPA. The Vulkan
1.0.266 spec says for VkClearDepthStencilValue:
"stencil is the clear value for the stencil aspect of the depth/stencil
attachment. It is a 32-bit integer value which is converted to the
attachment’s format by taking the appropriate number of LSBs."
As such, mask the clear value when packing TA_STATE_ISPA.
Fixes a number of GLES tests, including:
dEQP-GLES2.functional.depth_stencil_clear.*stencil_scissored*
dEQP-GLES2.functional.fragment_ops.stencil.*
dEQP-GLES3.functional.depth_stencil_clear.*stencil_scissored*
dEQP-GLES3.functional.fragment_ops.stencil.*
Fixes: 821c6b9342 ("pvr: Implement depth/stencil/depth+stencil attachment...")
Signed-off-by: Frank Binns <frank.binns@imgtec.com>
Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31679>
Frank Binns
1612255de6