Texturing | Official Unity Discord | Page 1

astral sequoia Jul 4, 2023, 11:02 PM

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But in any case, to do the blending here is what I recommend.
Using a height map of the texture would give you better results, but you can technically use any map.

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Your first step would be to be able to simply blend two textures, or n textures

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Depending on how you are doing the texturing maybe it's super easy or super hard

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If you have a set of weights already, super easy

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Otherwise then it can get complicated

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Let me know and I will try to help from there

glossy cairn Jul 5, 2023, 9:17 PM

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Hey @astral sequoia , thank you for your answer and your time!
The thing is that i'm using unity's tilemaps. I Have a Sprite for each Tile and through algorithms i determine which tiles i set in the tilemaps using Tilemap.SetTiles(). I have an int Array per Chunk which saves the data around the neighboring cells, where each bits corresponds to 1 neighbor.

For Example: 0000 0000 corresponds to the neighbors like this -> (N) (NE) (E) (SE) (S) (SW) (W) (NW)
Meaning that the number 4 would be 0000 0100 bitwise, so i need to blend that tile only to (SW). I would of course create blend masks for each direction, which would then be picked based on the number. ( See images ).

The problem that i have now is how i can access that array's data in shader graph. Each Tilemap has a Tilemap Renderer Component which has a material and i think is what is used by most for shader magic. https://docs.unity3d.com/Manual/class-TilemapRenderer.html.

hope this helps 🙂

astral sequoia Jul 5, 2023, 10:01 PM

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I see, well it then gets a bit way more complicated

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You would need to:

Determine the place where two diferent tiles meet
Add a new tile with a new material on the outline
Add a blend texture on the direction of the blend on the new tile
Add the desired textures to blend on the new material
Blend according to the height map and the blend texture

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Sadly I haven't used that much shader graph.

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But if I understood correctly and you have the info that I understand you have

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You will have to:

Create the blend mask of each of the directions as said before
If you create them in the form of a texture in the cpu, then pass a Texture2DArray to the GPU on the material that is actually blending(https://docs.unity3d.com/Packages/com.unity.shadergraph@13.1/manual/Sample-Texture-2D-Array-Node.html)
And do the same with all the diferent textures (albedo, height map)
And then blend

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First off, are you already passing any data to the shader graph?

#Texturing