Greeting Qt enthusiasts and ex-trolls,
I'm building multimedia software on Windows with Qt + libVLC and
recently switched to the OpenGL ES backend
(setAttribute(Qt::AA_UseOpenGLES)).
Coming from the Desktop OpenGL I immediately noticed how smooth it was
at resizing windows, and it felt like the proper way to go.
Unfortunately when playing a 1440p / 60fps video the CPU usage increases
and the rendering gets slower, like way slower than classic OpenGL.
Is there a flag or some configuration to alter OpenGL ES behavior with
larger textures that update frequently ?
Maybe I'm doing my texturing "wrongly", you can review my shader for
blending images here:
https://github.com/omega-gg/Sky/blob/master/src/SkMedia/src/media/WBackendVlc.cpp#L371
Many thanks,
--
Benjamin Arnaud
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