Add external texture plugin for GPU texture

[HidenoriMatsubayashi]

The current external texture plugin which is the same with Flutter desktop for Windows supports pixel buffer only. However, its performance is not good. So we need to add a texture plugin with a GPU texture buffer.

[charafau]

related issue and PR (for : https://github.com/flutter/flutter/issues/83693 https://github.com/flutter/engine/pull/26562

implementation in tizen engine:

https://github.com/flutter-tizen/engine/pull/86

[HidenoriMatsubayashi]

Thank you for sharing. I guess flutter/engine#26562 is the same implementation with flutter-tizen. I'm looking forward to it will be merged. After that, I'll copy and merge it to our repo.

[charafau]

yes, I think you're right. the reason why I linked tizen one is because in discussion, dev actually shows how to use this code :)

[swift-kim]

Update: https://github.com/flutter/engine/pull/26562#issuecomment-1114156009

[talksik]

Hey @HidenoriMatsubayashi, isn't this thread solved by DMA buffers? Or is that different than external texture plugin.

Is using the DMA buffer that is currently implemented in video_player ensure hardware accelerated rendering? Or is it just improving the memory inefficiency problem compared to PixelBuffer?

Thank you! Been trying to figure out how to improve performance here further. I have gstreamer elements with hardware accelerated decoding, but now need to ensure that rendering is done with hardware acceleration.

[HidenoriMatsubayashi]

isn't this thread solved by DMA buffers? Or is that different than external texture plugin.

No, it's different from dmabuf in video_player. The task in this issue is that porting https://github.com/flutter/engine/pull/26840. Currently, we haven't implemented kFlutterDesktopGpuSurfaceTexture yet. See https://github.com/sony/flutter-embedded-linux/blob/master/src/flutter/shell/platform/linux_embedded/flutter_elinux_texture_registrar.cc#L51C45-L51C45

Is using the DMA buffer that is https://github.com/sony/flutter-elinux-plugins/pull/67 in video_player ensure hardware accelerated rendering? Or is it just improving the memory inefficiency problem compared to PixelBuffer?

The latter.

[talksik]

Thanks @HidenoriMatsubayashi for the detailed explanation!

I will research this further to see if I can make a dent. 👍🏾