AM57XX EVM How to Assign Qt5 Applications to DRM Layers in order to modify each layer's Alpha Value

phillip class

I have 3 Qt5 Applications that work fine independently on the AM57XX EVM using the Qt 5 Wayland Plugin on the TI SDK image.

When I launch them, they fill the whole screen so that the first app launched is covered by the second, and the second app is covered by the third.

How can I modify the transparency of the second and their app launched so that I can "see" some of the view from the first app launched?

I tried modifying the window opacity with Qt's setWindowOpacity, but the wayland plugin says "Window Opacity not supported by this Plugin."

Thank you,

Phil

0 Biser Gatchev-XID over 9 years ago

I will ask the video experts to look at this.

0 phillip class over 9 years ago in reply to Biser Gatchev-XID

Hi Biser - do the video experts have any further input on this? Thank you.

0 Biser Gatchev-XID over 9 years ago in reply to phillip class

Feedback will be posted directly here when available. I will send a reminder.

0 Anand Balagopalakrishnan over 9 years ago in reply to Biser Gatchev-XID

Hi,

Have you tried setting the color format of Qt5 layers to ARGB? Weston supports per-pixel alpha blending by default.

Regards,

Anand

0 phillip class over 9 years ago in reply to Anand Balagopalakrishnan

Thanks for the response - we decided to use DRM with Qt5.5 compiled without Wayland/OpenGL support. It seems to be working fine.

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