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  • #1798
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Created Sep 25, 2019 by Bugzilla Migration User@bugzilla-migration

[SNB] INTEL_DEBUG=nohiz is likely broken for depth/stencil buffers

Submitted by Nanley Chery @nchery

Assigned to Intel 3D Bugs Mailing List

Link to original bug (#109985)

Description

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: ae77f123

Version: git

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