Bug 98329

Summary: [dEQP, EGL, SKL, BDW, BSW] dEQP-EGL.functional.image.render_multiple_contexts.gles2_renderbuffer_depth16_depth_buffer
Product: Mesa Reporter: Mark Janes <mark.a.janes>
Component: Drivers/DRI/i965Assignee: Chad Versace <chadversary>
Status: VERIFIED FIXED QA Contact: Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity: normal    
Priority: medium CC: chadversary, randy.xu
Version: git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Bug Depends on:    
Bug Blocks: 98315    

Description Mark Janes 2016-10-19 17:59:00 UTC 
fails with:

Creating gles2 context with config id: 3 context: 0
Creating gles2 context with config id: 3 context: 1
Rendering with depth buffer
Modifying EGLImage with glClear to renderbuffer
Rendering with depth buffer
Image comparison failed: max difference = (128, 136, 128, 0), threshold = (32, 32, 32, 32)
Comment 1 Tapani Pälli 2016-10-25 09:22:33 UTC 
*** Bug 98344 has been marked as a duplicate of this bug. ***
Comment 2 Tapani Pälli 2016-10-25 09:23:22 UTC 
Mark, does this fail you on anything else than Skylake? For me it reliably fails on SKL but passes nicely on HSW.
Comment 3 Mark Janes 2016-10-25 18:57:46 UTC 
It fails on SKL, BDW, and BSW.

Apologies: I should have put that in the bug when I wrote it.
Comment 4 Chad Versace 2016-12-09 23:46:11 UTC 
Tapani, are you still working on this? I confirmed that it still fails on Mesa master@d0d21532f with DEQP_TARGET=x11_egl.
Comment 6 Tapani Pälli 2016-12-12 08:01:36 UTC 
I've verified that this fixes it for me -> resolving as fixed.

--- 8< ---
commit 42011be1e27f59d750b781c10766e19ec0ee6ff5
Author: Chad Versace <chadversary@chromium.org>
Date:   Fri Dec 9 16:22:52 2016 -0800

    i965/mt: Disable HiZ when sharing depth buffer externally (v2)
    
    intel_miptree_make_shareable() discarded and disabled CCS. Fix it so
    that it discards and disables HiZ too.
    
    Fixes dEQP-EGL.functional.image.render_multiple_contexts.gles2_renderbuffer_depth16_depth_buffer
    on Skylake.
    
    v2: Actually do what the commit message says. Discard the HiZ buffer.
    
    Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=98329
    Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
    Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
    Cc: Nanley Chery <nanley.g.chery@intel.com
    Cc: Haixia Shi <hshi@chromium.org>
    Cc: mesa-stable@lists.freedesktop.org

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