Hi Guys,
I'd like to post my progression about 3d Grass.
I can use MCX by using
Groundpolygon Wizard. But you need to uncheck both two little box for Project flat polygons.... and Filter out non-ground polygons. Then on the Options box, you need to uncheck Slice and group polygons. Your grass will be successfully converted to ground poly. If you have problem with the curvature of the earth, you need to slice the grass poly to be less that 100 meters apart by yourself. Don't let MCX do it. Nevertheless, you can use tweaked asm method as usual. I don't see much different.
Other than that, you can add seasonal variation to your grass as well. I think it might be fun if you turn this in to 3d snow over the grass. I don't have snow in my project. But you could try by changing the alpha and the texture abit.
This is my Spring-Summer texture. Grass is green and beautiful.
This is my Fall-Winter. Grass become brown.
Let's try it.
If you do this on a small scale then it works fine, but the moment you go big, you will notice a massive frame hit. When I say big, I mean something beyond 1000 meters. Obviously it is only good for extremely flat areas. Due to these limitations I abandoned the concept.
This time I use 3dGrass for the whole airport and the fps is not bad at all. Some fps hit but not as much as AI airplane do.
Another thing, if you tweak or us MCX groundpoly wizard, you still have layer priority over the height of the grass.
If you have other higher layer than the grass, the grass will not show over other higher layer. You can have very simple grass all over the place. Cut it out just when you need photoscenery to be seeen.
Grass is in lower layer than line. So the line display over the grass despite the grass has some polygons 10 cm above the line.
In this picture, the grass is layer 8, the edge and the taxiway asphalt is on layer 12. The grass is simple rectangle here.
You can have 3d grass really smooth blend with the photoscenery. Just let the edge of the layers above the lowest one in the same plane. You can see it blend nicely. You can see on the left side, the edge of the layers of grass (I have 10 layers, 0.015m apart) are in the same plane in vertical. So you can see the sharp edge, the end of grass. But on the right side the 3d grass is blend nicely with photoscenery. Since all the edges of 10 layers are not in the same plane in vertical.