I am just spending a lot time in learning how 3d engines work and coding my own http://crazybutcher.cube3d.de/code/_evac2.html but since I am no pro take it not as "the truth" (there is none anyway ) -closed mesh: better because if there are small seams you would see aliasing along the edge. also think that stencil…
Final Render of the gifting dragon! I decided to scrap retopologising it, as it wasn't in a T pose so it wasn't working out well. I ended up compositing the ZBrush renders in Photoshop :)
That depends on how the triangles shade or if they create artifacts. Long thin triangles can be problematic for certain types of rendering. If you have even more edges in your circle then they become longer and thinner, so you might add a ring around the circle and gradually step the number of edges down as it radiates…