Strange texture rendering

Replies to This Discussion

Permalink Reply by Alain Bonnefoy on March 24, 2011 at 2:24am

I also joined the Sketchup view, not rendered.

 

Attachments:

• sketchup view.jpg, 929 KB

Permalink Reply by Render Plus on March 24, 2011 at 7:26am

Alan, could you try using the icon on the toolbar to place images in your posts directly, rather than attachments. It would make it much easier for me to see what you mean without having to click on each image individually.

 

We will take a look at these images in a little while and (It is still early here in Colorado), and see what you are referring to.

Permalink Reply by Alain Bonnefoy on March 25, 2011 at 1:50am

Ok, so I didn't had time to do it yesterday.

Here is the sketchup view: You can see the tile on the walkway just after the pool

Here is the tile used:

Here is the image rendered by iRender and you can see the strange dark grey stripes on the walkway:

Permalink Reply by Render Plus on March 25, 2011 at 8:15am

Try placing the walkway in a layer and then turning off the other layer so you can render it just by itself. If you still see the dark lines, then copy the walkway to the Windows clipboard, paste it into a new drawing, and see if you still have the problem. If so, then sent the new drawing to us. (It helps immensely if we can isolate problems to a small drawing)

Permalink Reply by Alain Bonnefoy on March 25, 2011 at 12:53pm

Hi,

That's done. I attached the corresponding batch.

 

 

 

 

Attachments:

• batch_walkway.zip, 57 KB

Permalink Reply by Alain Bonnefoy on March 29, 2011 at 10:25am

What about this problem?

Did you have my test package via yousendit?

Permalink Reply by Rich Hart on March 29, 2011 at 3:11pm

Can you upload or send us the SketchUp model also?

Permalink Reply by Alain Bonnefoy on March 30, 2011 at 7:09am

Hi Rich,

You should have received a yousendit download link in support@renderplus.com.

Regards,

Permalink Reply by Rich Hart on March 30, 2011 at 7:59am

I believe what is happening is this:

The texture image for that material is set to be about 1 inch x 1 inch (.03m x .03m), very small.

It is then stretched (positioned) to look like the tile squares are about 3' x 3'7", and skewed a bit.

I believe there is a small bit of rounding error introduced when calculating the UV coordinates for the texture for the rendering, with such a large texture scale.

If I edit the material in SketchUp's material dialog, and make it 3' x 3' 7", and then reset the texture position on that walkway, the odd lines go away when I render it. Even if I skew it.

Try that.

Permalink Reply by Alain Bonnefoy on March 30, 2011 at 10:55am

Ah ok!!! Never pay attention to such thing.
Many thanks.

Rich Hart said:

I believe what is happening is this:

The texture image for that material is set to be about 1 inch x 1 inch (.03m x .03m), very small.

It is then stretched (positioned) to look like the tile squares are about 3' x 3'7", and skewed a bit.

I believe there is a small bit of rounding error introduced when calculating the UV coordinates for the texture for the rendering, with such a large texture scale.

If I edit the material in SketchUp's material dialog, and make it 3' x 3' 7", and then reset the texture position on that walkway, the odd lines go away when I render it. Even if I skew it.

Try that.