topic Realistic grass in Visualization

Realistic grass

Anonymous — Thu, 11 May 2023 09:43:34 GMT

I'm trying to create a grass surface of my own using high resolution image files, however CineRender is new to me so I don't know how to make the orientation of the surface random. I've attached the rendered image, there's a lot corrections that need to be made.

Apart from watching the instrutional videos, I was hoping you guys can offer some tips, that would really speed up my learning process.

Thanks!!

Re: Realistic grass

Anonymous — Tue, 28 Apr 2015 03:34:20 GMT

Go to PhotoRendering settings, check the "Detailed settings" checkbox and more options will appear (make the dialogue box wider if yours does not look like my image, with 2 columns), and the Grass option is at the bottom of the list. Be aware this will slow things down considerably. You may want to render a selected area (use marquee in 3D window and use the Render Marquee Region option) to check that you are getting what you want.

Re: Realistic grass

sinceV6 — Wed, 29 Apr 2015 00:38:33 GMT

Hi.
Specifically talking about grass using textures (and not the geometry grass from CineRender), there are a couple of things that you could do:

1. The texture you are using may be tileable, but it is not equalized; in other words, it is showing a darker corner that reveals the tiling and needs to be fixed. Here's a tutorial for that: https://tolas.wordpress.com/2009/05/26/tutorial-how-to-equalize-textures-in-photoshop/
If it doesn't tile, well, you'll need to fix that too.
2. If you don't have any, look for some in cgtextures.com, under nature->grass. The selection is pretty good.
3. You can use one of the most common tricks to avoid or reduce repetition: combine a couple of textures. In the surface options, with the CineRender settings, for the color setting use texture:fusion or texture:layer. It will allow you to combine two or more textures to achieve the effect. The missing part, at least here, is that you only get a single size value. The attached is from a 3D software where you can apply different mapping coordinates to each texture, so you have more control. The effect will improve even with this limitation.

Hope that helps.
Best regards.

Re: Realistic grass

Anonymous — Wed, 29 Apr 2015 01:34:41 GMT

Hmm, I'll try that out, will post back results later.

Though are there any other settings that can accomplish what's similar to the Internal Engine's mirroring options? If I have a floor texture and want to avoid repetitive patterns what can I do?

And another thing, can the windows reflect the physical sky? I never saw it happen before(perhaps due to wrong light angles), is it possible?

Many thanks!

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Update: Thanks sinceV6, appreciate the tip!