How to combine multiple map texture and alpha data into terrain

Questions
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1

Hi,

I have the requirements below:

  • Heightmap: 256x256
  • 10 texture maps (each picture 8x8) (snow, grass, desert,…)
  • 10 data express the heightmap materials (snow, grass, dessert…). each data mapping fit-in 256x256 and data from 0-255 (material alpha)

Now,

  1. I want to draw the terrain 256x256 and apply 10 textures map with 10 data alpha.
  2. How can I render low-poly terrain as above?

I have spent weeks struggling but it cannot blend textures and alpha data as I want. I have tried to customize the ShaderMaterial but nothing works.

Thanks.

2

If I were you, I’d join all textures in an atlas, and then I’d set the UV coordinates of terrain vertices to pick the correct part of the atlas.

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3

Hi @PavelBoytchev ,
I have tried an atlas to merge multiple textures, but It doesn’t resolve my problem. Our project requests mix multiple textures as one, it is like multiple layers of stack overlap.

4

Then, most likely I do not understand your situation. Maybe someone else might provide help.

Meanwhile, I have an example of dynamically merging two textures (one with ice and one with moss). Do you want something like this, but with 10 textures?

Freezing cube

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5
  • Could you merge them in image editing software?
  • Could you merge them in Canvas 2D and use the result as a texture?
  • Could you have 10 overlapping terrains, each having one map?
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6

Maybe its called splat map

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