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AppGameKit Classic Chat / Using different textures depending on the vertex height

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PSY
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Posted: 1st Dec 2017 07:27
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Hey guys,

let's say I create a terrain using a memblock mesh.
Is it possible to use different textures, depending on the vertex heights of the mesh?
For example, if the vertex height is <5, a grass texture is used.
If the vertex height is >=5 and <10, a rock texture is used.
If the vertex height is >=10, a snow texture is used.



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baxslash
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Posted: 1st Dec 2017 08:00
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I would suggest a shader is the best way to achieve this. You could transition between textures smoothly too.
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Markus
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Posted: 1st Dec 2017 08:27 Edited at: 1st Dec 2017 10:23
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the other way around you can make one texture from water,grass ,rock ,snow and mix them together by code.
a small terrain plus image texture you can also paint ways, streets or static tree shadows.
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janbo
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Posted: 1st Dec 2017 08:44 Edited at: 1st Dec 2017 09:09
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I guess you actually want a slope shader.
There is one in my Water shader demo, I did't create the shader (maybe it was the default terrain shader) but I can help you to change it to your needs if you like ?
Actually in that shader there are examples of slope based and height based color blending.
I think there is a shader doing what you need somewhere in the forums.
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BatVink
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Posted: 1st Dec 2017 09:26
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There are definitely examples of this on the forums. Game Guru and DBP terrain have this ability.
Don't forget you will probably want to consider steepness too. - Shallow gradient = grass or snow. Steep gradient = rock.
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nz0
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Posted: 2nd Dec 2017 20:40
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Doesn't the supplied terrain demo use a shader to for the height textures?
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PSY
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Posted: 3rd Dec 2017 21:40
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Thanks alot guys,

Seems I really have to start dealing with shaders.
I really appreciate your offer janbo. I'm totally new to the shader stuff, so if you don't mind I'll toss you a message from time to time asking stuff

Again, thank you all for the great info!!


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Rick Nasher
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Posted: 4th Dec 2017 21:26
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As nz0 said:
Quote: " Doesn't the supplied terrain demo use a shader to for the height textures?"


Yes it does:
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