Bug 82804

Summary: unreal engine 4 rendering errors
Product: Mesa Reporter: Tapani Pälli <lemody>
Component: Drivers/DRI/i965Assignee: Jason Ekstrand <jason>
Status: RESOLVED FIXED QA Contact: Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity: normal    
Priority: medium    
Version: git   
Hardware: Other   
OS: All   
i915 platform: i915 features:
Attachments: correct output
rendering errors

Description Tapani Pälli 2014-08-19 08:07:22 UTC
UE4 demos used to render fine but now with current master there are errors. Attaching screenshots ...
Comment 1 Tapani Pälli 2014-08-19 08:08:57 UTC
Created attachment 104869 [details]
correct output

correct rendering of floor tiles
Comment 2 Tapani Pälli 2014-08-19 08:09:30 UTC
Created attachment 104870 [details]
rendering errors
Comment 3 Tapani Pälli 2014-08-19 08:49:45 UTC
These errors happened on Ivybridge laptop and screenshots were taken from "Mobile Temple" available here:


will try to bisect ..
Comment 4 Tapani Pälli 2014-08-19 11:31:17 UTC
This is really a pain to bisect, there are likely several issues around. However for this one, last good commit is 8ad7c19. Looks like something in the ARB_copy_image series seems to cause things to fail, or maybe UE4 is a user for the extension.

--- 8< ---
commit 410fea8dd9cc0b1b500477a8b6f68c950f7c895a
Author: Jason Ekstrand <jason.ekstrand@intel.com>
Date:   Fri Jun 27 16:05:37 2014 -0700

    i965: Add support for ARB_copy_image
    This, together with the meta path, provides a complete implemetation of
    v2: Add a fallback memcpy path for when the texture is too big for the
    v3: Properly support copying between two places on the same texture in the
        memcpy fallback
    v4: Properly handle blit between the same two images in the fallback path
    v5: Properly handle blit between the same two compressed images in the
        fallback path
    v6: Fix a typo in a comment
    Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
    Reviewed-by: Neil Roberts <neil@linux.intel.com>
Comment 5 Jason Ekstrand 2014-08-19 16:37:37 UTC
Not sure where you dug that old e-mail address up from.  Haven't recieved anything useful there in years.  Re-assigning to my active account.
Comment 6 Tapani Pälli 2014-08-20 04:45:18 UTC
(In reply to comment #5)
> Not sure where you dug that old e-mail address up from.  Haven't recieved
> anything useful there in years.  Re-assigning to my active account.

Sorry, that's what bugzilla had when I searched you in the 'Assigned to' field. Will use the new one from now on. Let me know if you need some help with this, I can try to debug as well.
Comment 7 Jason Ekstrand 2014-09-02 22:52:49 UTC
Should be fixed by this series:

Comment 8 Tapani Pälli 2014-09-04 05:03:01 UTC

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