[Bug 109985] [SNB] INTEL_DEBUG=nohiz is likely broken for depth/stencil buffers
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Tue Mar 12 23:15:05 UTC 2019
https://bugs.freedesktop.org/show_bug.cgi?id=109985
Bug ID: 109985
Summary: [SNB] INTEL_DEBUG=nohiz is likely broken for
depth/stencil buffers
Product: Mesa
Version: git
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/DRI/i965
Assignee: intel-3d-bugs at lists.freedesktop.org
Reporter: nanleychery at gmail.com
QA Contact: intel-3d-bugs at lists.freedesktop.org
For SNB, INTEL_DEBUG=nohiz seems to be broken in two places:
1. In miptree_create() in intel_mipmap_tree.c. Trying to create a depth/stencil
buffer will cause a depth miptree to be created without stencil.
2. In isl_genX(emit_depth_stencil_hiz_s) in isl_emit_depth_stencil.c. Emitting
a depth/stencil buffer instruction will unconditionally force HiZ on.
I haven't tested/verified these observations.
mesa version: ae77f1236862e73c1ac250898924c648d481bda4
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