Sorry, forgot the about:gpu.

Deleted: VadimGPUCapture.txt 13.5 KB

VadimGPUCapture.txt 13.5 KB View Download

Newer AMD drivers fixed bugs in handling of NV12 videos. I've tested on a Dell Inspiron 15" 5000 Series with dual Intel HD 620 and AMD R7 M445 with --disable_d3d11=0 and the H.264 videos from  Issue 451420  all play correctly. I'm going to restrict the driver bug workaround to older AMD drivers on these dual-GPU systems.

Awesome.  Is --disable_d3d11=0 something we can tell our Win8/Win10 users to tryout if they have a system where DX11 isn't taken, but could be.

Yes, you can recommend that to customers. It won't enable WebGL 2.0 but I can confirm it fixes the rendering artifacts seen in Figma with the D3D9 backend on this particular AMD switchable laptop.

Here's about:gpu from the Dell Inspiron laptop. Note that the driver version is 21.19.128.4 dated 9-3-2016. The driver version that was known to fix DXGI videos on AMD GPUs, from Issue 644293, was 21.19.519.2.

Since I've been able to test with 21.19.128.4 and assuming that it's the driver more than the specific AMD or Intel GPU in these switchable systems, I'll restrict the disabling of the D3D11 backend to driver versions earlier than this one.

In older  Issue 641967  some users reported that they successfully turned on the D3D11 path on AMD switchable GPUs with driver version 20.19.0.32832 dated 6-30-2016 . I'll restrict the workarounds based on driver date instead of specific driver version.

 Issue 641967  has been merged into this issue.

https://chromium-review.googlesource.com/617387 is up for review, re-enabling the D3D11 path and WebGL 2.0 on these machines with newer drivers (June 2016 and newer). We only have one such machine in house but the MPEG-4 video from  Issue 451420  renders correctly with this change. www.figma.com also renders more correctly, and simple WebGL 2.0 content runs.

Forgot to actually attach about:gpu from the Inspiron above.

Deleted: gpu.htm 157 KB

gpu.htm 157 KB View Download

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/51a69c87c1012ed072d5a47dab7059361474db37

commit 51a69c87c1012ed072d5a47dab7059361474db37
Author: Ken Russell <kbr@chromium.org>
Date: Thu Aug 17 19:36:40 2017

Re-enable D3D11 on Win/AMD switchable machines with newer drivers.

Testing on a Dell Inspiron 5000 Series laptop running Windows 10 and
with dual Intel HD 620 and AMD R7 M445 GPUs, the problem with
hardware-accelerated video decoding seems to be fixed, and the
Direct3D 11 path is faster and fixes rendering bugs with some
customers' applications. Restrict the workarounds disabling D3D11 and
WebGL 2.0 to drivers older than 2016-06.

BUG= 755722 

Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: I76ae209bf91db980a779a76e4ddb05e4970c699a
Reviewed-on: https://chromium-review.googlesource.com/617387
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Antoine Labour <piman@chromium.org>
Reviewed-by: Victor Miura <vmiura@chromium.org>
Cr-Commit-Position: refs/heads/master@{#495281}
[modify] https://crrev.com/51a69c87c1012ed072d5a47dab7059361474db37/gpu/config/gpu_driver_bug_list.json
[modify] https://crrev.com/51a69c87c1012ed072d5a47dab7059361474db37/gpu/config/software_rendering_list.json

kbr, thanks for the fix! Would we be able to cherry-pick this to M61 (or even M60)?

birunthan@: I think we'd better let this go through the Canary / Dev channels as normal. There's a risk that we may regress video playback on some systems, and we need to let end users test this out.

Please feel free to encourage your customers affected by this issue to test with Canary / Dev and see how it behaves. If any bugs are encountered, please file them and email me the bug ID. Thanks.

Closing as fixed.

 Issue 775443  has been merged into this issue.