QML->Image showing black rectangle instead of image
i already asked this question in the QtPi forum, but i think it's too specific.
I use QML->Image to display an image on the raspberry pi.
Whenever the image dimensions are too big (roughly >~2000pixel in one direction), i see a black rectangle instead of the image.
When i limit the memory usage by "sourceSize" <~2000 it does work. But i need to work with the original image, not the downscaled one.
width: 800; height: 800
sourceSize.width: 1920 -> works as long as the value is <~2000
x: 50; y: 50
I assigned 256MB memory to the gpu which is much more than the image i want to display (~3000x2000 pixel @24Bit -> ~17MB)
Do you think it's a memory issue?
Why are 256MB GPU Memory not enough?
Any ideas how to debug this problem further?
*My system: *
desktop: qt 5.2.1
raspberry: qt 5.3.0 (but i am not sure if it’s the final or some kind of beta. Is there a way to figure that out?)
Thanks for all comments,
Few inputs from my side. What is the size of the image ? If you don't specify any width and height does it work ? Can you try adding the scrollview for the image ?
bq. What is the size of the image?
I have different, neither work:
3264 x 2448
3456 x 2592
bq. If you don’t specify any width and height does it work ?
You mean, without sourceSize.width and sourceSize.height?
That doesn't work either
bq. Can you try adding the scrollview for the image ?
I didn't try that. What benefit would i have?