[Interest] Getting access to a rendered image in Qt 3D

[Andy]

What you're probably looking for is QRenderCapture:

  https://doc.qt.io/qt-5/qt3drender-qrendercapture.html

I've used it with mixed success to save out images and create a movie using
ffmpeg - works fine on macOS, isn't working for me on Windows (see
https://bugreports.qt.io/browse/QTBUG-61223 ).

I also don't know how to set the resolution other than changing the actual
window the scene is being rendered in (maybe there's a way to do it using
offscreen rendering but I haven't figured it out).

---
Andy Maloney  //  https://asmaloney.com
twitter ~ @asmaloney <https://twitter.com/asmaloney>


On Mon, Jun 19, 2017 at 11:24 AM, Christensen, Matias <
Matias.Christensen at flir.com> wrote:

> I have a Qt application with a 3D scene using Qt 3D.
>
> What i want is to be able to render a camera at a specific resolution
> and framerate, and then to be able to access the resulting images in C++
> code so i can encode it using h264 and send it to a different process.
>
> I am having trouble finding a way to get access to the rendered image, i
> image this is made difficult as the image never leaves GPU memory and i
> need to get access to it in main memory.
>
> Does anyone have a suggestion on how i might go about doing this?
>
>
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