🔒 Locked

water problems

Started by Pingvin Apr 23, 2003 at 3:12 PM 7 replies 350+ views

Original Post

Apr 23, 2003 at 3:12 PM

hello, I have this problem adding water to my scene. Im a beginner so I thought a big quad would be a good start. This is how it looks with deaphtesting.(The surface is a bezierpatch)

The curve of intersection doesnt look very nice. Have you had any similiar problems?

cowsarenotevil

478

cowsarenotevil

Apr 23, 2003 at 3:13 PM

In your gluperspective the znear param (one of the last ones) must be below 1. Raise it to at least one.

-~-The Cow of Darkness-~-

GreatOne

Apr 23, 2003 at 3:15 PM

Yeah, I''ve had that same kind of thing happen with my own water surface if its view from far away on my geforce4 ti. I think its largly graphics card specific, because under the same conditions, it did not happen on my friend''s Radeon8500. You can combat this with some software filtering tricks, but I''m not real familiar with them.

blizzard999

Apr 23, 2003 at 4:25 PM

It seems a Z-buffer problem: try to decrease the ratio Zfar/Znear and/or increase Z-buffer bit depth (for example 32 bit instead of 16)...both the solution increase the bit-resolution for a Z-unit

blizzard999

Apr 23, 2003 at 4:26 PM

It seems a Z-buffer problem: try to decrease the ratio Zfar/Znear and/or increase Z-buffer bit depth (for example 32 bit instead of 16)...both the solution increase the bit-resolution for a Z-unit

rexizt

Apr 24, 2003 at 3:56 AM

increase your znear

Pingvin

Author

Pingvin

Apr 24, 2003 at 4:39 AM

thx all! problem solved.

Basiror

139

Basiror

Apr 24, 2003 at 8:20 AM

summary:

increase your near clipping plane distance (i use 24 or 32)

increase your depthbuffer use 24 or 32 bits
(someone told me that 32 bits are not supported on all cards or at all)

do gf4 ti cards support 32?

Topic Locked

This topic has been locked by a moderator. New replies are not allowed.