[Bug 109985] [SNB] INTEL_DEBUG=nohiz is likely broken for depth/stencil buffers

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109985

--- Comment #7 from Nanley Chery <nanleychery at gmail.com> ---
(In reply to Denis from comment #6)
> btw - first of all I ran ./bin/hiz test. It passed successfully in both cases

I wonder why you aren't seeing any failures. I just tested this configuration
in our CI and am seeing over 400 failures in piglit. The output of ./bin/hiz
was this error:

hiz: ../src/intel/isl/isl.c:1921: isl_emit_depth_stencil_hiz_s: Assertion
`(info->stencil_surf->usage & ISL_SURF_USAGE_STENCIL_BIT)' failed.

Some of the failing tests include:
    piglit.spec.!opengl 1_0.gl-1_0-drawpixels-depth-test.snbm64
    piglit.spec.!opengl 1_0.gl-1_0-drawpixels-stencil-test.snbm64
    piglit.spec.!opengl 1_0.gl-1_0-no-op-paths.snbm64
    piglit.spec.!opengl 1_0.gl-1_0-readpixsanity.snbm64
    piglit.spec.!opengl 1_0.gl-1_0-scissor-depth-clear-negative-xy.snbm64
    piglit.spec.!opengl 1_0.gl-1_0-scissor-depth-clear.snbm64
    piglit.spec.!opengl 1_0.gl-1_0-scissor-many.snbm64
    piglit.spec.!opengl 1_0.gl-1_0-scissor-stencil-clear.snbm64
    piglit.spec.!opengl 1_1.copyteximage 1d.snbm64
    piglit.spec.!opengl 1_1.copyteximage 2d.snbm64
    piglit.spec.!opengl 1_1.depthfunc.snbm64
    piglit.spec.!opengl 1_1.depthrange-clear.snbm64
    piglit.spec.!opengl 1_1.depthstencil-default_fb-blit.snbm64
    piglit.spec.!opengl 1_1.depthstencil-default_fb-clear samples=2.snbm64
    piglit.spec.!opengl 1_1.depthstencil-default_fb-clear.snbm64
    piglit.spec.!opengl 1_1.depthstencil-default_fb-copypixels.snbm64
    piglit.spec.!opengl 1_1.depthstencil-default_fb-readpixels-24_8.snbm64
    piglit.spec.!opengl
1_1.depthstencil-default_fb-readpixels-32f_24_8_rev.snbm64
    piglit.spec.!opengl
1_1.depthstencil-default_fb-readpixels-float-and-ushort.snbm64
    piglit.spec.!opengl 1_1.draw-pixels.snbm64
    piglit.spec.!opengl 1_1.drawpix-z.snbm64
    piglit.spec.!opengl 1_1.getteximage-depth.snbm64
    piglit.spec.!opengl 1_1.hiz.snbm64
    piglit.spec.!opengl 1_1.polygon-mode-offset.snbm64
    piglit.spec.!opengl 1_1.polygon-offset.snbm64
    piglit.spec.!opengl 1_1.readpix-z.snbm64
    piglit.spec.!opengl 1_1.stencil-drawpixels.snbm64
    piglit.spec.!opengl 1_1.texsubimage-depth-formats.snbm64
    piglit.spec.!opengl 1_2.copyteximage 3d.snbm64
    piglit.spec.!opengl 1_4.copy-pixels.snbm64
    piglit.spec.!opengl 1_4.gl-1_4-polygon-offset.snbm64
    piglit.spec.!opengl 1_4.stencil-wrap.snbm64
    piglit.spec.!opengl 1_5.normal3b3s-invariance-byte.snbm64
    piglit.spec.!opengl 1_5.normal3b3s-invariance-short.snbm64
    piglit.spec.!opengl 2_0.clear-varray-2_0.snbm64
    piglit.spec.!opengl 2_0.early-z.snbm64
    piglit.spec.!opengl 2_0.gl-2_0-two-sided-stencil.snbm64
    piglit.spec.!opengl 2_0.stencil-twoside.snbm64
    piglit.spec.!opengl 3_0.clearbuffer-depth-stencil.snbm64
    piglit.spec.!opengl 3_0.clearbuffer-depth.snbm64
    piglit.spec.!opengl 3_0.clearbuffer-stencil.snbm64
    piglit.spec.!opengl 3_2.clear-no-buffers.snbm64

I'll attach a file with the rest.

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