[nanogui] how can I get pixel data form GR_DRAW_ID

[rithy roth]

Hi,

I read an image from a file into memory like so:


pixmap = *GrNewPixmap*(w, h, 0);

*GrDrawImageToFit*(pixmap, *gc*, 0, 0, -1, -1, image[0]);

How can I access the underlying pixel values?

thanks