DrawPrimitive with alpha

I'm trying to draw 开发者_StackOverflow社区a line with the DrawPrimitive function in Direct3D.

Can I draw tranparent line with the function? If I can, how to design it?

I am not a DirectX expert, but I don't believe transparency has anything to do with the DrawPrimitive() function specifically.

I would look into the SetRenderState() function to enable alpha blending, and then assign some color/texture properties to your geometry.

Also, if you are just drawing a single line you may not see anything since a line by itself wouldn't have any width. I'm guessing you actually want to draw some triangles or quads or something instead of just a line.