Custom Shader - Access properties of mesh it's been applied too?

[Xeonzinc]

Hi,

 

I'm having a lot of fun working with the shaders, the tutorials around here are great! I'm stuck what I'm hoping is a simple problem

 

• I have a X number of meshes (all the same), but each also contains a variable (say an integer from 1-100)

• Currently i can create X versions of the material (passing the variable in the material constructor) - which then displays the texture differently on each object

 

 

• I'm trying to create a single material which can take a property of the mesh it's applied to (and therefore only ever need to create one version of the material instead of X)

 

I imagine this must be possible as the shader is already getting the position etc... of the mesh it is applied to, I just want to access another single variable, but have no idea how!

 

Thanks,

[GameMonetize]

That's a good question actually!

 

You can either inherit from ShaderMaterial and redefine the bind function to add your own code.

 

But I'm thinking about adding a callback to allow you to do this easily like shaderMaterial.onBind = ...

[GameMonetize]

I added a material.onBind callback

You will be able to do:

 

myMaterial.bind = function(mat) {

mat.getEffect().setColor3(...

}

[FreeFrags]

Maybe a noob question but whats the difference between the solution above and using:

 

shadedMaterial.setFloat("myVar", 1.0);

 

and defining this in your vertex shader

 

uniform float myVar;

[GameMonetize]

Both work for me:)