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[VR browsing] content quad flashes black when navigating via links |
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Issue descriptionChrome Version: 68.0.3415.0 OS: Android N Device: Pixel VRCore: 1.14.190701955 What steps will reproduce the problem? (1) Enter VR browsing (2) go to wikipedia.org (3) click on any links on the page. Repeat. What is the expected result? Smooth transition between pages when navigating via links. What happens instead? Content quad flashes black when navigating via links. See video Please use labels and text to provide additional information. If this is a regression (i.e., worked before), please consider using the bisect tool (https://www.chromium.org/developers/bisect-builds-py) to help us identify the root cause and more rapidly triage the issue. For graphics-related bugs, please copy/paste the contents of the about:gpu page at the end of this report.
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May 16 2018
This goes back a ways. I used pre-built Canary builds to check, and it looks to have appeared in 68.0.3401, around April 20. I'll bisect that small range.
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May 16 2018
The issue appeared with our GVR quad for content. https://chromium.googlesource.com/chromium/src/+/1e24d20aa32e6c27eb7439b7a8521f835c591b44
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May 16 2018
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May 16 2018
Fix is in review. We weren't setting the blend mode explicitly before drawing content via a GVR layer.
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May 16 2018
The following revision refers to this bug: https://chromium.googlesource.com/chromium/src.git/+/6306fbad688c76481d89fcb9c11224854777e210 commit 6306fbad688c76481d89fcb9c11224854777e210 Author: Christopher Grant <cjgrant@chromium.org> Date: Wed May 16 20:33:47 2018 VR: Fix content quad black flashes on navigation On navigation, or at other times, content was flashing. This was happening because unrelated code presumably mucks with the GL blend mode, and we weren't setting it before drawing content via the new quad-layer mechanism. BUG= 838695 Change-Id: I93791ff26cf52d74db410cf1590b9f5baca21765 Reviewed-on: https://chromium-review.googlesource.com/1062196 Reviewed-by: Biao She <bshe@chromium.org> Commit-Queue: Christopher Grant <cjgrant@chromium.org> Cr-Commit-Position: refs/heads/master@{#559270} [modify] https://crrev.com/6306fbad688c76481d89fcb9c11224854777e210/chrome/browser/android/vr/vr_shell_gl.cc
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May 16 2018
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Comment 1 by dbbrooks@chromium.org
, May 8 2018