Hello everyone!

First of all thank you Chai3D team for this awesome lib!

Although I'm stuckd a bit now. I'd like to use flat shading for some of my objects. As far as I know I can achieve this via glShadeModel(FLAT). I see glShadeModel(GL_SMOOTH) in Camera and FrameBuffer classes hardcoded, and no option to change them on a per-object nor on a global level.

Is it an option to subclass Mesh (for example), and in it's overriden render function call glShadeModel(FLAT) before calling it's superclass' render?

Another question. Is it possible to apply culling for edge rendering? Now my model renders correctly, but on top of it the whole "unculled edge object" renders even if culling is enabled. And it doesn't take into account the transparency of the edge color.

And my last question is about how to render just the contour of my object? Is there built in solution for that, or I should use custom shaders?

Thank you, any answer is appreciated and very welcome!

Timo

Hello Timo,

Thank you for all your comments!


I'd like to use flat shading for some of my objects. As far as I know I can achieve this via glShadeModel(FLAT). I see glShadeModel(GL_SMOOTH) in Camera and FrameBuffer classes hardcoded, and no option to change them on a per-object nor on a global level.


Good point! One way to make your models look flat would be to recompute the normals by calling the following methos. This being said, we will further investigate your point.

myMesh->computeAllNormals();