texture scaling
 

Hi,

attaching a measuring-tape-texture to a box looks blurry in vizard.

I attached it as a texture in 3D Studio Maxx - and it looks fine there.

Importing it as a wrl-File into vizard it looks kind of blurry - not as sharp as in the rendering of 3D Studio Max.

Vizard reports at the beginning:
Scaling image '../resources/joNew/050121_AritrackLayers1Red_0_200CroppedScaled.jpg' from (27880,878) to (2048,1024)

Any ideas how to improve sharpness in vizard?

Johannes

Hi,

The texture is being scaled for two reasons.

1) OpenGL requires that the width and height of a texture be a power of two.

2) The size of the texture is larger than the maximum texture size allowed by your graphics card (usually 2048 or 4096)

If you want to use a very large texture the best thing to do is split it up into smaller textures and tile the textures on your object.

Thank you very much, this helped.

Only if it takes very short time: Can you post a link where I could have found that, if I would have not had your help? (Like good Information to texture or openGL constraints). If you don't have it close buy I can try to find something myself, so not really necessary.

Hi,

Here's a link to the OpenGL "Red Book". It is pretty much the official guide.

http://fly.cc.fer.hr/~unreal/theredbook/