I have a php application application with dynamic google charts display. I put 'is3D': true in chart configuration to put 3d effect, and it works perfectly.
When i try to convert the charts to img to export it after to PDF with dompdf :
all_chart_divs.innerHTML = '<img src="'+allchart.getImageURI() +'">';, I can't see the 3D effect in the image when there is only one value in the chart. But it works fine when the chart contains more than one value.
Here the chart before converting it to image: 
And after convert it to img, I have that: 