a quad by definition sadly isn't 2 triangles. thats the main point to use them.
You can use, at least in OpenGL, don't know about DX, other surface types to make them smooth curved.
Ever played Q3, then you know how it looks like
You can use, at least in OpenGL, don't know about DX, other surface types to make them smooth curved.
Ever played Q3, then you know how it looks like