Getting QOpenGLFramebufferObject error on grabtoimage with big objects

[sdsoldi]

Hi!

I'm trying to get an image from an object but I'm getting QOpenGLFramebufferObject error when I try to grab big image.

The error:
QOpenGLFramebufferObject: Framebuffer incomplete attachment.
QOpenGLFramebufferObject: Framebuffer incomplete, missing attachment.

The code:
rule.grabToImage(function(result) {
result.saveToFile("test01.png");
});

This code works on "small" objects like 6000x650 px. But when I try to generate a 12000x650px is crashing.

I need to take this "photos" on big "rules" to get the preview. It's another way to get this?