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[Quarry]

I imagine this is not an uncommon problem, though I never bothered trying to find a fix for those fill gaps between polygons.

Is there a way to get rid of them? Will increasing vertex float precision to 64 bits change anything?

[Layl]

OpenGL only guarantees no gaps to appear if the vertices' locations are EXACTLY the same.

[Quarry]

Well, how can I get no gaps when they are not is my question

[Layl]

If how to get no gaps is not your question, I'm not sure what is.
Edit: my mistake, I'm completely misreading things

[Layl]

Getting no gaps when they're not exactly the same is not possible as far as I know. Closest thing you could do is round the position in the vertex shader, but it would be better to adjust whatever system is generating these vertices to make them exactly the same.

[ThemsAllTook]

Well, how can I get no gaps when they are not is my question

Add more vertices so that they can share locations when you have a vertex meeting an edge.

[InfiniteStateMachine]

I cant really make out what that screenshot is. Are those a bunch of disconnected planes?
 

[Quarry]

Well, how can I get no gaps when they are not is my question

Add more vertices so that they can share locations when you have a vertex meeting an edge.

Yeah, that's probably the only option currently

I cant really make out what that screenshot is. Are those a bunch of disconnected planes?
 

In triangles, if that helps

[InfiniteStateMachine]

Ah ok.  My idea is under the assumption that it is a continuous mesh. If so you could just use an indexed draw so that you dont have to worry about 2 vertices being in the same place because it will reuse the same single vert

[Netsu]

What calls are you using to draw this? Maybe using a triangle strip could help?

[Quarry]

GL_TRIANGLES, I can actually try strips for this specific case

[ProgramGamer]

Maybe it would help to make each strip slightly larger than it needs to be by a margin of, like, half a pixel?