Why the effect of www.texture is very bad how to solve the texture fuzzy question

I first set project Quality web player is high(Fantastic) , Anti Aliasing is 8x Multi Sampling.Scene have a plane and load script:
`

var url = "http://localhost/floor.jpg";
function Start () {

        var www : WWW = new WWW (url);

        yield www;  

        renderer.material.mainTexture = www.texture;

}`  

Then publish Webplayer, and open http://localhost/Webplayer.html. The the effect of floor texture is very bad.
The effect is
[13514-qq图片20130725222201.jpg|13514]
Why ? How to make the picture clear ?Who can help me? Thanks very much.

But If I don’t use www.texture , by unity internal Material ball add texture,the effect is very good.the effect is very good.How to make the effect of www.texture clear like unity internal Material ball.
[13515-qq图片20130725221636.jpg|13515]

Hey so the way to set things like aniso level and filtering mode is as follows:

Texture2D tex = new Texture2D(x, y, TextureFormat.DXT1, true);

www.LoadImageIntoTexture(tex);

tex.filterMode = FilterMode.Trilinear;
tex.anisoLevel = 8;

Try not to ever access the texture property inside the www object, as it does not cleanly destroy itself with the rest of the www object. Try to immediately load it into a Texture2D object and manipulate from there.

This answer highlights the issues of directly acessing the www.texture component: www.texture dispose didn't work, causing memory leak - Unity Answers