Landscaping

[CiroC]

Hi all,

I am working on an exterior scene, that will have loads of trees, grass and other plants. These are my initial steps with Corona, so apologies in advance if some of my questions are too noob.


Any feedback is welcome

[CiroC]

Grass tests with a new material

[CiroC]

Getting there

[CiroC]

Hi all,

Just wondering if this is a Corona problem or a 3D model problem. In the reflection setting if I use:

Translucency 0.5
Reflection Level 1
Reflection Color 200
IOR 1.5
Glossiness 1

I get the result shown in the Glo_1 (it is the Reflection pass)

But if change the Glossiness to 0.8 or lower I start to see some white points in the render and if I use the value of 0.5 I get the result shown in the Glo_0.5.

Am I missing something here? Any help is appreciated.

[Ludvik Koutny]

No, those are sun disc reflection. Of the sun itself. If you have glossiness 1.0, that means reflections are perfectly mirror, and there very little chance of a ray going in exact direction to hit sun disk. When you lower glossiness though, when ray hits the grass, it bounces and fractures into many rays to generate blurry reflection, and so the chance to reflect sun disc increases a lot.

You can easily understand the behavior by simply placing highly reflective sphere in your scene, then slowly lowering glossiness and doing test renders. You will understand how it impacts reflection of sun disc. :)

[CiroC]

Thank you Rawalanche. Initially I thought it was a reflection artifact, but after testing the scene with a sphere as you recommended I could understand how the glossiness affects the reflections. Don't know why I got stuck with the 0.5 value because a lower value actually resolves the problem and produces a better result.

I will upload some results today.

Thanks

[CiroC]

A test with trees.

[CiroC]

More trees. I found that Corona A7 handles quite well the heavy vegetation. Although the initial pass is quick, parsing the scene in this case can take up to 15minutes.

Any feedback is welcome.

[Ludvik Koutny]

15 minute parsing?! That's scary! I would report it as a bug. Unless your ram overflown and windows started to page data to hard drive.

[Ondra]

such thing got reported multiple times and it was always not enough RAM, so check that first

[CiroC]

I have 16GB of RAM. The trees are quite heavy with geometry maybe it is the reason why it takes so long?

By the way Keymaster. I love the fact that when I use full mesh for the proxy we can see the textures applied. Great upgrade.

[Ludvik Koutny]

Full mesh could be part of the problem. Then the tree is twice in the memory. Once for viewport, and once for Corona. Seriously, check your memory usage when rendering the scene. 15 min parsing time is unacceptable.

[CiroC]

I don't use the full mesh in the preview, only wire-box. I just checked again and for this scene it takes:

Scene parsing: 17:02 min
Geometry: 8:04 min

Now is doing the initial pass and in the Memory I am using 13.3GB to render. With my personal pc it takes less time, but is because the computer is more powerful than this workstation (HP Z30).

[Ondra]

is your total memory usage at or near the RAM capacity? (you will see it in task manager -> performance tab)

[CiroC]

From the Performance tab:

Physical Memory (MB)
Total          16179
Available    173

And the graph shows that I am using 15.5GB

:D

Thanks for the help