Multiple detail maps for terrian rendering

Mahdi Jeddi · Post by **Mahdi Jeddi** » Fri Dec 02, 2005 12:34 pm

Hello,
I wanted to know how I can use multiple detail maps for terrian rendering, for exaple one for roads, and one for grass, dirt,...?

Thanks.

Guest · Post by **Guest** » Fri Dec 09, 2005 5:16 pm

no you have to do it yourself (and dont think of that if you have no exp in game programming.. dont know you)

Spintz · Post by **Spintz** » Fri Dec 09, 2005 5:52 pm

either multi-pass rendering, or you need to add support for more than 2 textures

genesys · Post by **genesys** » Sat Dec 10, 2005 10:24 am

add support for more than 2 textures (some variables in the irrlicht.dll)
and then use shaders

MindGames · Post by **MindGames** » Mon Dec 12, 2005 10:23 am

I am looking to do something similar. I want to use a tile based approach to the terrain with each tile type representing a different terrain type. This will allow me to make an editor simple as well as making path finding etc easier. However I do not want the tile edges to be obvious, i.e. I want the edges of different terrain types to bleed or merge together.

The approach I am looking at is generating a single large BMP from a tile based map at startup and using this. The idea being that this can take as long as it likes to be generated and once done should work nice and fast.

Is this idea reasonable, practical etc?

mandrav · Post by **mandrav** » Mon Dec 12, 2005 10:42 am

MindGames wrote:The approach I am looking at is generating a single large BMP from a tile based map at startup and using this. The idea being that this can take as long as it likes to be generated and once done should work nice and fast.

Is this idea reasonable, practical etc?

Nope, you 'd end up with a potentially huge texture and still get no adequate detail (depending on your terrain's size).

What I 've done with 0.14, is I fixed a bug (or missing functionality better) regarding GLSL shaders, increased the max textures to 8 (4 would be ok too) and used a simple shader that does what's needed. If only the terrain scene node rendering was faster with opengl...

Eternl Knight · Post by **Eternl Knight** » Mon Dec 12, 2005 7:55 pm

Well, Spintz has been working on VBO's in OpenGL and apparently they work better than their equivalent in DirectX (for terrain at least). Look out for his next release if you can wait for it.

--EK