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3D Disable 3d tile clipping?
- Thread starter Kyrieru
- Start date
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- Tags
- clipping gm 2 gms2 3d orthographic
Kyrieru
Member
It's a tile layer that's clipping, nothing else seems to.
flyingsaucerinvasion
Member
Can you explain your problem in more detail?
Kyrieru
Member
Tilrs dissappear as I move or rotate the view, whereas they dont in perspective mode.
https://i.gyazo.com/19bf549e20949db13ed5bf3626a12fb2.mp4
flyingsaucerinvasion
Member
It could be gamemaker trying to cull tiles it thinks are outside of the 2d view.
flyingsaucerinvasion
Member
I suspect you can fix this problem by setting the size of the view with matrix_build_projection_ortho().
So the idea here is to NOT change the size of the camera's view, but just to use matrix_build_projection_ortho and then asign the result as the camera's projection matrix.
So the idea here is to NOT change the size of the camera's view, but just to use matrix_build_projection_ortho and then asign the result as the camera's projection matrix.
Last edited:
flyingsaucerinvasion
Member
So does it happen when you zoom only, or also just when changing the look-at view matrix?
It might be possible to fix this problem by bypassing the camera entirely, and resorting to matrix_set to set the view and projection matrices instead.
It might be possible to fix this problem by bypassing the camera entirely, and resorting to matrix_set to set the view and projection matrices instead.
flyingsaucerinvasion
Member
I could be way off with my theory that this is a problem with the camera trying to cull outside of the view.
Because it doesn't make sense that that should happen only with an orthographic projection. Because the camera doesn't know whether it is using a perspective or an orthographic projection, does it? So why would the culling work differently?
But the thing is it looks very much like a culling issue. We don't see z-fighting, or signs that it is a far or near plane clipping issue.
Because it doesn't make sense that that should happen only with an orthographic projection. Because the camera doesn't know whether it is using a perspective or an orthographic projection, does it? So why would the culling work differently?
But the thing is it looks very much like a culling issue. We don't see z-fighting, or signs that it is a far or near plane clipping issue.
flyingsaucerinvasion
Member
I've encountered a similar problem in GMS1. And the way I fix it is by making the 2d view, (which isn't used to actually draw anything in 3d), big enough to encompass all of the tiles or instances that should be visible in the 3d projection.
But it still doesn't make sense to me that changes to the view matrix would affect how gamemaker culls tiles. Does it analyze the view matrix to try to figure out what should be visible? I doubt that. Maybe you should show the entire code you are using for your camera and view.
But it still doesn't make sense to me that changes to the view matrix would affect how gamemaker culls tiles. Does it analyze the view matrix to try to figure out what should be visible? I doubt that. Maybe you should show the entire code you are using for your camera and view.
Kyrieru
Member
What I showed above is pretty much all there is. Other than this
gpu_set_ztestenable(1)
gpu_set_zwriteenable(1)
view_enabled = 1;
view_set_visible(0, 1);
The only other stuff is the tiles, and a camera object which rotates around and is used for the look at matrix to refer to. (camera_ob)
How do you do the 2d fix you mentioned? I tried doing stuff like that in theory but either I didn't know enough to get it to work, or it just doesn't work anymore
This is what it looks like when I rotate in ortho, by the way.
https://i.gyazo.com/8f7728506feb134e0e75897385c5c8a0.mp4
gpu_set_ztestenable(1)
gpu_set_zwriteenable(1)
view_enabled = 1;
view_set_visible(0, 1);
The only other stuff is the tiles, and a camera object which rotates around and is used for the look at matrix to refer to. (camera_ob)
How do you do the 2d fix you mentioned? I tried doing stuff like that in theory but either I didn't know enough to get it to work, or it just doesn't work anymore
This is what it looks like when I rotate in ortho, by the way.
https://i.gyazo.com/8f7728506feb134e0e75897385c5c8a0.mp4
flyingsaucerinvasion
Member
The other video you posted was also an orthographic projection.
You should probably tag your thread GMS2, to hopefully get some GMS2 folks in here. I can tell you how I solved my problem in GMS1, but I'm not sure it applies in GMS2. All I did was make the 2d view (not port), or room if not using views, large enough to cover everything that I want to be visible. And then I use matrix_set to set the view and projection matrices.
Anyway, like i've said a couple times now, I'm not convinced my original theory (that it was a culling problem), is correct. Are you using a draw_clear() function anywhere?
You should probably tag your thread GMS2, to hopefully get some GMS2 folks in here. I can tell you how I solved my problem in GMS1, but I'm not sure it applies in GMS2. All I did was make the 2d view (not port), or room if not using views, large enough to cover everything that I want to be visible. And then I use matrix_set to set the view and projection matrices.
Anyway, like i've said a couple times now, I'm not convinced my original theory (that it was a culling problem), is correct. Are you using a draw_clear() function anywhere?