Multiple Textures applied via Shader

[Rekindled Phoenix]

I can code all day, but shaders are honestly a little daunting. I'm wondering if anyone knows of some example shader code that would help me accomplish my goal.

 

Similar to the caustics water shader, I want to apply a texture to a model depending on the angle of the verticies.

 

Does anyone have tutorials or would be able to volunteer for this?

[LordHippo]

Do you mean the global angle?

So if the object turns the textures are changed?

 

Or local angle of the vertices?

[Rekindled Phoenix]

Global angle. Something similar to the snow shader in most modern game engines, but with multiple textures.

[LordHippo]

You can calculate global normal in the "mesh.frag" like this:

 

vec3 g_nml = normal * gl_NormalMatrix;

 

Then you can combine textures based on this global normal.

[Rekindled Phoenix]

Awesome! I appreciate your help, but I wouldn't even know where to start when it comes to shader programming... or combining the texture blend alphas

 

Do you know of an editor / tutorials /examples that could help me accomplish this?