Textures degrading when zoomed out - question

Troubleshooting graphics
1

Just starting to play with textures. Changed the source of HelloStates and HelloKeyInput to use a grass texture I have. When zooming right out the texture seems to become ‘sparkly’ when moving the camera.



Here is the 256x256 .tga I was trying:



http://www.drakensberg.com/images/grass.tga



I also tried resizing this to 128x128 and it helps a bit but also becomes sparkly when zooming right out.



http://www.drakensberg.com/images/grass_s2.tga



These are both 24bit. Are there any options I can set in the states to prevent this odd effect from taking place? I need to keep the textures quite small, 128x128 if possible seeing as I will be using hundreds of them and they will be mapped onto ‘tiles’ and the game view will be quite zoomed out.



I also tried to make the object much bigger but this made no difference.



Thanks,



Builderchad.[/url]

2

Sounds like mipmapping is not turned on and you want the "blurring" effect at a distance that it provides.



Make sure you have mipmapping set when creating your texture. (You can post your texture creation line if you need help).

3

My texture line started out as:


Texture t=TextureManager.loadTexture(monkeyLoc, Texture.MM_LINEAR, Texture.FM_LINEAR,true);



I tried MM_NEAREST, MM_NEAREST_LINEAR and MM_NEAREST_NEAREST but those also give the sparkle effect.

MM_LINEAR_NEAREST was a lot better but not quite there.

I found MM_LINEAR_LINEAR to give the best result and works well with a 128x128 texture as well. One thing I would like to do is reduce the blurring a little as the texture can get quite fuzzy so I will play around with the other settings like filter, apply and correction.

Thanks for the help Mojo.

I also noticed AM_DECAL in the docs - does this have anything to do with decals? I need to blend other textures into the grass (like a road) and it was mentioned in another post that decals were good for this but not in jme yet. Is there an alternative if decals arent in?

BuilderChad.
4

monkeyLoc is a URL right? try using:


Texture t=TextureManager.loadTexture(monkeyLoc, Texture.MM_LINEAR, Texture.FM_LINEAR, Image.GUESS_FORMAT_NO_S3TC, 1.0f, true);

5

Thanks renanse, yes it is a URL. I tried your line but that prototype and the GUESS_FORMAT_NO_S3TC constant only seem to be in the cvs version of jme and I am using the latest release version.



In any event what I have so far will do nicely until I get the cvs version of jme compiled - I have kept your line in a comment in my code so I can play with it then.

6

Cool, yeah I kinda wondered about that since your method signature was dropped in cvs. Good luck!