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I've been playing with textures to see if I could come up with a method for grass that doesn't up the poly count too much or render times counting on displacement.

This test uses two identical meshes with a darker map under and a clipped map to the top layer with two saturations of the colour map weighted to provide large scale variations. This also cuts dwon the visual tiling of the low scale colour maps. Tiling of the weight map only becomes obvious in the distance.



IMAGE UPDATED

Looks interesting. Could you put some objects on the grass (a house, a ball or whatever).

That's a good idea using 2 meshes with the top mesh having a clip map. I would have never thought of that.

Bubbaloo wrote:That's a good idea using 2 meshes with the top mesh having a clip map. I would have never thought of that.

Yeah problem is though Brian that at low glancing angle the clipped areas tend to disappear!

Though on close up its cool to see the leaves that I put on the top colour map are are sitting on the top grass blades.

I might try and play with the normal map a bit more and see if I can get better results from that!

First post updated with new test!!

Looking good Richard!

I don't quit understand what you are doing here though. Could you post some visual aids for the less fortunate, like myself? I am sure all of us that are a bit impaired would appreciate it.

Cheers,
Ron

Woo ! ... that looks great !

I think maybe you could cut back the saturation a little. The green is bordering on green-blue right now. Maybe add a bit of yellow in it.

Thanks guys!

I've got a test running now that I think is much better. I've got the bumping and clipping right I think.

And yes your right brian the saturation is a bit high!

I think I might be a lot closer with this one!!!

I've got a little tiling in the bump map that I need to work on though.

I would say don't worry to much about the tilling it's looking like lawnmower strokes, really great grass you got here Richard

I think the main thing I'm seeing is that all the grass blades appear to be laying on their sides instead of standing up. But depending on the grass species, this is possible, I guess.

Bubbaloo wrote:I think the main thing I'm seeing is that all the grass blades appear to be laying on their sides instead of standing up. But depending on the grass species, this is possible, I guess.

Yeah I know mate! That would always be the downfall of this technique!