pbr material shader thingy idea.txt

struct MaterialVariables
{
    float specular, roughness, metalness, sheen;
};

This is the MaterialVariables, these can all be changed based on the material that we can setup beforehand

enum EMaterials
{
    MAT_WOOD,
    MAT_GLASS,
    MAT_N
    MATERIAL_COUNT
};

This is a list of all the added materials

MaterialVariables m_Materials[MATERIAL_COUNT];
This is the container where we store all the materials

When we render a model with the material we will write the ID to a texture and then when we 
do the PBR rendering we will first sample the material texture. When we do this we will get a number

We can then go to our ConstantBuffers which should be equal to MATERIAL_COUNT

That could result with fairly large buffers, but they don't need to be removed from the graphics card, so once they are commited 
they should stay in the graphics cards memory until they are no longer needed at which point they should be removed.
This is a place where streaming would be a thing that you should look into.

cb LARGE_TABLE[MATERIAL_COUNT]
{
    Layout : MaterialVariables
} 

We should then be able to fetch the correct material id and use the correct tweaking variables for the requested material.
This is for artist control obviously.