Archived

This topic is now archived and is closed to further replies.

calculting Z-Buffer accuracy..

This topic is 5275 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Z-Buffer accuracy depends on far/near clip plane ratio. When that ratio is big, Z-Buffer starts to lose accuracy. I want to know if it's possible to calculate the far/near ratio based on value of "minimum accuracy". For example, let's say that I want my Z-Buffer accuracy to be at least 0.5 units (game coordinates). That means if 2 polygons are at least 0.5 units apart on Z-axis in eye space, then the Z-Buffer algorithm should sort them correctly. But if those polygons are closer that 0.5, then it can't be determined which to draw first. So how do I calculate far/near ratio for minimum accuracy of 0.5? ..lets assume that my 3D card uses 32 bit Z-Buffer

Share this post


Link to post
Share on other sites