PBR Texture Workflow

// Using textures with PBR materials
pbr.albedoTexture = new BABYLON.Texture("textures/metal/albedo.png", scene);
pbr.metallicTexture = new BABYLON.Texture("textures/metal/metallic.png", scene);
pbr.roughnessTexture = new BABYLON.Texture("textures/metal/roughness.png", scene);
pbr.normalTexture = new BABYLON.Texture("textures/metal/normal.png", scene);
pbr.ambientOcclusionTexture = new BABYLON.Texture("textures/metal/ao.png", scene);

// Using a single channel from a texture
pbr.useRoughnessFromMetallicTextureAlpha = false;
pbr.useRoughnessFromMetallicTextureGreen = true; // Use green channel for roughness
pbr.useMetallicFromMetallicTextureBlue = true;   // Use blue channel for metallic