Re: Background Pixelation

stef.salmon · Post by **stef.salmon** » Mon Oct 29, 2018 2:33 pm

Is it possible to get the image larger?

If I open the 3D view and zoom in and then render, I get the pixelation again and it doesn't seem any larger?

I'm probably doing it incorrectly!

https://www.dropbox.com/s/ol5nlzs1yn397 ... 2.png?dl=0

Thanks.

UbuntuBirdy · Post by **UbuntuBirdy** » Mon Oct 29, 2018 2:36 pm

It's faster than my fathers new 7000€ Dell 18 core on both CPU and GPU rendering.

It's faster than my Ryzen system (8 core / 16 threads but 3.6 - 4.0 GHz)
Eventually your 128GB memory (I have only 32GB) are the key for fast renderings...

Ceciliabr · Post by **Ceciliabr** » Mon Oct 29, 2018 4:36 pm

Just rendered 3440 x 1440. No pixelation.

KWS-4K.png

It's impossible to say what you are doing wrong.

Cec

UbuntuBirdy · Post by **UbuntuBirdy** » Mon Oct 29, 2018 4:41 pm

Cec, I can reproduce the pixelation on my system even with your fixed file.
If I delete all the floors, the problem has gone. If I recreate the floors, the problem reappears.

UbuntuBirdy · Post by **UbuntuBirdy** » Mon Oct 29, 2018 5:34 pm

Cec, this is your file, just opened and directly rendered:

...as you said, no problem.

But zoomed in only a little bit:

... the problem reappears.

The biggest floor is a little bit displaced, so I tested if this can be the problem. But neither push it to the right position, nor delete the floor and rebuild it helps.
If you create a second level and then increase the original level by 1mm, you can see strange "rays" on the floors in the 3d view:

I suspect this has something to do with the problem, but I still can not figure out what exactly caused it.

Ceciliabr · Post by **Ceciliabr** » Mon Oct 29, 2018 5:43 pm

Try THIS file, and see if it helps.

I'm just guessing now, since I'm not able to reproduce the problem.

Cec

Ceciliabr · Post by **Ceciliabr** » Mon Oct 29, 2018 5:45 pm

I suspect this has something to do with the problem, but I still can not figure out what exactly caused it.

Maybe deleting the background image will help?

C

UbuntuBirdy · Post by **UbuntuBirdy** » Mon Oct 29, 2018 7:11 pm

No luck, as before, just opened the file, switched from q3 to q4 and rendered:

Deleting the bg-image does not change anything.

I do not know what else to try, so I have to give up for the moment...

Puybaret · Post by **Puybaret** » Mon Oct 29, 2018 8:35 pm

I would suggest to create a large white zone around you building, and cut / paste everything else on top of that.
Do you mean create a large white image .png and use this as the background, then copy and paste everything on to that?

Simpler than that: create a rectangle room that surrounds all your design as in the attached file.

Puybaret · Post by **Puybaret** » Mon Oct 29, 2018 8:49 pm

I'm pretty sure that these "noisy rays" come from how the ground is cut around your home with large triangles that goes from the house border to the far away border of the scene.
I noticed that kind of noisy effect in other situations with SunFlow at very high points of view, and it's a reason why I limited the eyes elevation to 100m.
Introducing a rectangle room will produce a much simpler cut out in the ground around that rectangle, with smaller triangles around the house which will remain in that rectangle.

Re: Background Pixelation