Enhancement: Use GPU image smoothing (bilinear interpolation or some average filter) when using window.render function.

[pedroth]

This is a nice to have feature, since the browser does something similar.

So, when I write the image buffer, using the function window.render and the size of the window is bigger than the buffer image, the default behavior is nearest neighbor interpolation:

I would expect something like the browser:

Both images have the same resolution, which is lower than the window size.

This feature is a total optional one, but it would be a cool one. Thank you for this amazing project.