Can you provide a screenshot and point to where the flickering lines would be. And describe how you are drawing the target board.

describe how you are drawing the target board.

phil_t asks an excellent question. For instance, if you are drawing the rings on the target board without disabling depth writing, you are likely seeing "z-fighting:" two or more objects rendered at approximately the same distance from the view point. That is also affected by your near- and far-plane settings in your projection matrix.

What values are you using for near- and far-plane settings?

You didn't describe how you render the target, which is likely more important. It may or may not be a z-fighting issue.

Consider: at this point, your post is "I draw something and it flashes. What's wrong?"

That being said, your near/far ratio appears to be quite large for your needs. Make it as small as you can. I.e., if you need to "see" objects at 10000 units, do you really need to worry about objects as close as 0.1 units?

using D3DXLoadMeshFromX to load .x file in directx 9.0. I checked with near and far clip settings but no improvement

Trying to help you here, dev_12, but you seem reluctant to provide any of the information asked for. Help others help you. You MUST provide more information. The problem you're having is still "I draw something and it's not right. [later] I checked some values and it didn't help."

Can you provide a screenshot?

(for the third time) How do you draw the object?

Are the "rings" part of the object's texture, or are they drawn separately?