Composition_and_FunctionV88.js

// by  Sohail Mehra and Noland Chaliha
const D = require('Diagnostics');
const S = require('Shaders');
const Tex = require('Textures');
const R = require('Reactive');
const M = require('Materials');
Promise.all([
	Tex.findFirst('cameraTexture0'),
    M.findFirst('user_mat'),
]).then(onReady);

function onReady(assets) {
const diffuse = assets[0];
const defaultMaterial = assets[1];
const diffuseTexture = diffuse.signal;

const vtx_uv = S.vertexAttribute({ variableName: S.VertexAttribute.TEX_COORDS });
const vtx_plus_one = R.add(vtx_uv, R.pack2(1,1)); // runs in vtx shader
const frag_uv = S.fragmentStage(vtx_uv);
const frag_plus_one = R.add(frag_uv, R.pack2(1,1)); // runs in fragment shader
const diffuseColor = S.textureSampler(diffuseTexture, vtx_uv);

//sm - composition
// const func_uv = S.functionVec2();
// const func_plus_one = R.add(func_uv, R.pack2(1,1)); //runs in fragment shader 
// const diffuseColor = S.composition(diffuseTexture, func_uv); //order of samples determined by chain usage

//sm - material
const diffuseTexSlot = S.DefaultMaterialTextures.DIFFUSE;
defaultMaterial.setTextureSlot(diffuseColor, { textureSlotName: diffuseTexSlot });
}

// by  Sohail Mehra and Noland Chaliha