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

Andy asmaloney at gmail.com
Mon Jun 19 11:59:17 CEST 2017

What you're probably looking for is QRenderCapture:


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?
> ________________________________
> Notice to recipient: This email is meant for only the intended recipient
> of the transmission, and may be a communication privileged by law, subject
> to export control restrictions or that otherwise contains proprietary
> information. If you receive this email by mistake, please notify us
> immediately by replying to this message and then destroy it and do not
> review, disclose, copy or distribute it. Thank you in advance for your
> cooperation.
> _______________________________________________
> Interest mailing list
> Interest at qt-project.org
> http://lists.qt-project.org/mailman/listinfo/interest
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.qt-project.org/pipermail/interest/attachments/20170619/7844dce0/attachment.html>

More information about the Interest mailing list