Bug 99100 - [SKL,BDW,BSW,KBL] dEQP-VK.glsl.return.return_in_dynamic_loop_dynamic_vertex regression
Summary: [SKL,BDW,BSW,KBL] dEQP-VK.glsl.return.return_in_dynamic_loop_dynamic_vertex r...
Status: RESOLVED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: Timothy Arceri
QA Contact: Intel 3D Bugs Mailing List
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-12-15 15:34 UTC by Mark Janes
Modified: 2017-01-24 22:42 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments

Description Mark Janes 2016-12-15 15:34:44 UTC 
Regression occured at:

a5502a721fd30fde4f5dc71421494329052f805b
Author:     Timothy Arceri <timothy.arceri@collabora.com>
Revert "nir: Turn imov/fmov of undef into undef."


dEQP-VK.glsl.return.return_in_dynamic_loop_dynamic_vertex

Standard Output

Image comparison failed: difference = 234.365, threshold = 0.1
Comment 1 Timothy Arceri 2016-12-16 01:50:06 UTC 
Possible fix: https://patchwork.freedesktop.org/patch/127784/
Comment 2 Timothy Arceri 2016-12-16 09:37:23 UTC 
I've pushed:

commit 3421b3f5a35f5cf29934f74c30850c4d04ba0237
Author: Timothy Arceri <timothy.arceri@collabora.com>
Date:   Fri Dec 16 10:17:33 2016 +1100

    nir: Turn imov/fmov of undef into undef
    
    Reverting the previous attempt at this a5502a721fd30fd resulted in
    the following Vulkan test failing.
    
    dEQP-VK.glsl.return.return_in_dynamic_loop_dynamic_vertex
    
    This time we use the num_components from the alu dest rather than
    num_inputs to the op to determine the size of the undef.
    
    Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
    Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
    Cc: "13.0" <mesa-stable@lists.freedesktop.org>
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99100

However both Ken and Jason seem to think this is just hiding a real bug so maybe we should keep this open?

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