OnPaint buffer looses transparency with disable-gpu switch

[DamianKrawczyk]

I'm having issues getting alpha transparency in OnPaint handler after enabling --disable-gpu switch.
I'm using cefsimple from cef_binary_83.3.12+g0889ff0+chromium-83.0.4103.97.

When I have gpu enabled I can see correct value for BGRA pixel buffer in OnPaint handler -> 0x00000000
When I'll add --disable-gpu switch BGRA buffer contains white pixels -> 0xffffffff

CefSettings:

Code: Select all

CefSettings settings;
settings.no_sandbox = true;
settings.windowless_rendering_enabled = true;


CefWindowInfo:

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CefWindowInfo window_info;
window_info.width = width;
window_info.height = height;
window_info.SetAsWindowless(0);


Switches:

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--disable-gpu --disable-gpu-compositing --disable-gpu-vsync

[magreenblatt]

This is https://bitbucket.org/chromiumembedded/ ... oken-since