CloudCompare forum

Hi, I'm trying the "draw normals as lines" function for the first time and have been getting an error which causes a crash.
With v2.13.0 (Feb14), I compute normals on a small cloud, then click the "draw" check box.

The error that pops up is "ERROR: 3:7: 'varying' : cannot be used with a block or a structure"
followed by
"[ccGLWindow::draw3D] OpenGL error: stack underflow"
then, CC crashes.

Of the two computers I tested, it only happens on my laptop with integrated Intel Iris Graphics. Desktop with dedicated AMD GPU works fine.

Ah, yes, I forgot to add a safety check: some drivers don't support the shader version used to do it. I'll add a clearer message in the next release.

Hum, it doesn't look straightforward to test the right extension that should be supported... so maybe we won't be able to improve this error message!