HP Sauce Posted September 19, 2008 Share Posted September 19, 2008 What methods do you lot use for making realistic grass in a render? I've been toying with the idea of converting a stipple to mesh/3d polys, but wondered if anyone has a better solution. Quote Link to comment
gmm18 Posted September 19, 2008 Share Posted September 19, 2008 There are grass textures that come with VW...why not give those a try... Quote Link to comment
CipesDesign Posted September 19, 2008 Share Posted September 19, 2008 Yes, try those, or... I often simply take a digital photo of the grass at a particular site, then use the image to create a texture. It usually works pretty well for overall impression, but not quite as well for real close-up shots. Quote Link to comment
islandmon Posted September 20, 2008 Share Posted September 20, 2008 Another approach is to use a typical grass image with a texture bump mapped to a fractal surface contour generator to give the illusion of the waviness or spikiness. For some scenes a series of ImageProps taken from the actual site is more than adequate to fill in the background scenery details. Quote Link to comment
Ray Libby Posted September 20, 2008 Share Posted September 20, 2008 Yah, no matter how good a grass texture is it will never look good on a flat surface. Quote Link to comment
bcd Posted September 20, 2008 Share Posted September 20, 2008 If using a digital photo you can mitigate the tiling effect by running the image through photoshops offset filter & repairing the seams. http://www.photoshopsupport.com/tutorials/cb/seamless-tiles.html Quote Link to comment
rDesign Posted September 20, 2008 Share Posted September 20, 2008 In addition, it often takes more than just Photoshop's Offset filter to get rid of the 'checkerboard' pattern from the gradient in the photo. This tutorial (referring to video but also applies to renderings) explains how: High-Pass Texture Tiling Regards, Tim Quote Link to comment
Vectorworks, Inc Employee Dave Donley Posted September 22, 2008 Vectorworks, Inc Employee Share Posted September 22, 2008 (edited) Hello highpass: Try a Granite color shader with different shades of green (several very dark green), and a Wrapped Leather bump shader with all amplitudes except Fold Amplitude turned down. Edited September 22, 2008 by Dave Donley Quote Link to comment
Damon Design Posted September 23, 2008 Share Posted September 23, 2008 Wow that looks like a putting green. I guess that just goes to show how a bit of experimenting with all those almost overwhelming number of shader options can give you something unexpected yet just about right. Still, that would have taken me way too long to figure out. Thanks for the example Dave, I'm inspired to think outside of the shader box! Quote Link to comment
HP Sauce Posted November 10, 2008 Author Share Posted November 10, 2008 Despite still appearing rather flat, your example works a bloody treat Dave, thanks a lot. This texture plus a few 3d 'grass' symbols I've made produce a tidy result. PS I had tried copy/pasting the aforementioned 3d grass symbol multiple times but for some reason my computer didn't like rendering 6,000 copies of it... strange. Shame, as small patches of it made as tests looked excellent. Quote Link to comment
Vectorworks, Inc Employee Dave Donley Posted November 10, 2008 Vectorworks, Inc Employee Share Posted November 10, 2008 Another shader that can look kind of like grass is to use the Marble shader, with the Detail turned down to zero. It produces a kind of mottled spotty look. Quote Link to comment
Jonathan Pickup Posted November 11, 2008 Share Posted November 11, 2008 instead of a shader, i use a solid color. this works most of the time. Quote Link to comment
cad@sggsa Posted November 11, 2008 Share Posted November 11, 2008 instead of a shader, i use a solid color. this works most of the time. How did you make a solid color look like grass?? Quote Link to comment
billtheia Posted November 26, 2008 Share Posted November 26, 2008 Dave, you should post that grass texture to the resource sharing section of this site. highpass, I'd love to see your final result. Quote Link to comment
HP Sauce Posted November 26, 2008 Author Share Posted November 26, 2008 Here's one we made a while ago from the example given in this thread. The rendering itself has lots of obvious faults but the grass came out really well compared to the single colour/standard grass textures we'd been using before. Quote Link to comment
Ray Libby Posted November 26, 2008 Share Posted November 26, 2008 Wow, that does look good. Best I've seen. Quote Link to comment
billtheia Posted November 26, 2008 Share Posted November 26, 2008 That really does look great, highpass. Would you mind posting a VW2008 version? Quote Link to comment
HP Sauce Posted November 26, 2008 Author Share Posted November 26, 2008 Thanks, and yeah of course:- Quote Link to comment
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