I am creating a voxel game, and I have recently run into an issue. My world is drawn by a DynamicVertexBuffer, which just consists of vertices for the blocks themselves. On top of that, I switch vertex buffers to my "Selected" vertex buffer which draws a white outline of a block for now. (This includes alpha but I have it turned off until I figure this glitch out).
This issue I run into is here:
Rather than the selected buffer overwriting my world block, it sort of does depending on the angle. Sometimes I see no overlap, sometimes weird glitches like shown above.
I was wondering, what can I do to prioritize the "Selected" buffer so that it is drawn on top of anything else sharing coordinates? Note that I did have this working, when everything used a basic effect. After switching to my own custom effect.fx (which supports fog and lighting, if that has anything to do with it), I run into this issue.
Any help is appreciated, thank you!
EDIT:
Just got the "flickering" of sorts to stop, I changed the DepthStencilState of the buffer to:
GraphicsDevice.DepthStencilState = DepthStencilState.None;
The only downside here is that it draws all 6 sides of the selected block now and it overlaps the world completely, again I don't know if this would be the right way to do it but any help would be appreciated:
The above picture is flat with the rest of the terrain around it, as you can see it draws the two sides that wouldn't actually be visible as well.