Texture/material draw distance problem with v large objects

Hello

I'm working on a 3D graphing application, with 10,000+ objects plotted on (large) panels, bars, etc.

When the camera gets too far away from panels, they suddenly disappear, or at least the texture/material does.

In the attached screenshot, the panel is at (0, 0, 0), size 1000x1000. I've managed to stop the camera at (-132, 500, -941) which is where the texture disappears.
Clipping Planes are 0.1 and 4000.
Material uses a 1024x1024 texture on a Diffuse shader.
Texture Filter Mode is Bilinear, Aniso Level 1, Max Size 1024, Format Compressed.

I have tried fiddling with all of these values, as well as changing the texture to Advanced and turning off Generate Mip Maps, but nothing stops it disappearing at this camera distance.

Does anybody have any ideas or suggestions?

Thanks in advance
-Paul

 

Is the sand texture underneath the map another plane? This looks like a Z-fighting issue. Try increasing the size of the camera's near clip plane.

 

If the terrain beneath the panel is also at (0,0,0), they may overlap and thus cause this blending together -- try raising the panel slighty higher if what I said is true.

 

Ah yes, that's it! I was so busy looking at the complex bits, I ignored the obvious.

The sand texture is a huge textured panel, with position updating once-per-frame to keep it directly below the camera. Pausing at that point shows that it's at a height of 0.

Thanks for the quick replies