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Issue 916579 link

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Issue metadata

Status: Untriaged
Owner: ----
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 3
Type: Bug



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WebP images only partially decode/render on alternating launches

Project Member Reported by mbarow...@chromium.org, Dec 19

Issue description

Chrome Version: 73.0.3640.0 onward
OS: Linux

What steps will reproduce the problem?
(1) Build Chrome
(2) Launch with --force-gpu-rasterization
(3) View a WebP image, e.g. "crab-icon" (attached)
(4) Quit Chrome
(5) Relaunch with the same flag
(6) View image and see only the bottom half appear (screenshot attached)

This can be reproduced on every alternate launch.

What is the expected result?
Image fully decodes/renders.

What happens instead?
Only the bottom part appears (less than half of it).


I have not been able to reproduce it prior to 73.0.3638.0. Omaha Proxy doesn't give a branch position for that version, though, so I couldn't bisect. There is a potentially semi-related commit in the range at crrev/97d1ad191f1c but I'm not sure.
 
crab-icon.webp
3.6 KB View Download
crabpartial.png
17.9 KB View Download
This is happening on tip-of-tree right now.
Cc: phanindra.mandapaka@chromium.org
Labels: Triaged-ET Needs-Triage-M73 Needs-Feedback
Tried to reproduce the issue on reported chrome version 73.0.3640.0 using Ubuntu 17.10 and 14.04. Attaching screen-cast for reference.
Steps: 
------
1. Launched reported chrome 
2. Launched chrome with given flag --force-gpu-rasterization
3. Opened given image (crab-icon) and quit Chrome and relaunched chrome with same flag 
As we have observed that the image renders fully
 
@Reporter: Could you please check the attached screen-cast and let us know if we missed anything from our end also mention the OS version that you have facing the issue.

Thanks.!
916579_New.webm
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916579.png
190 KB View Download
Sorry for the delay. I should say that it sometimes takes more than one relaunch and sometimes I need to rebuild with ninja (even without making changes). However, I'm not sure that any of my teammates, who have seen the issue, were able to reproduce. I'm running a version of Debian but have recently (since reporting the bug) updated. I'll see if I run into it again.

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