Add pbr swatch feature to layers tab

Sources/arm/App.hx

@@ -415,7 +415,10 @@ class App {
 					TabMaterials.acceptSwatchDrag(dragSwatch);
 				}
 				else if (inLayers || inViewport) {
-					Layers.createColorLayer(dragSwatch.base.value);
+					var color = dragSwatch.base;
+					color.A = dragSwatch.opacity;
+
+					Layers.createColorLayer(color.value, dragSwatch.occlusion, dragSwatch.roughness, dragSwatch.metallic);
 				}
 				else if (inSwatches) {
 					TabSwatches.acceptSwatchDrag(dragSwatch);

Sources/arm/Layers.hx

@@ -917,13 +917,13 @@ class Layers {
 		Context.layerPreviewDirty = true;
 	}
 
-	public static function createColorLayer(baseColor: Int) {
+	public static function createColorLayer(baseColor: Int, occlusion = 1.0, roughness = Layers.defaultRough, metallic = 0.0 ) {
 		function _init() {
 			var l = newLayer(false);
 			History.newLayer();
 			l.uvType = UVMap;
 			l.objectMask = Context.layerFilter;
-			l.clear(baseColor);
+			l.clear(baseColor, occlusion, roughness, metallic);
 		}
 		iron.App.notifyOnInit(_init);
 	}

Sources/arm/data/LayerSlot.hx

@@ -165,7 +165,7 @@ class LayerSlot {
 		}
 	}
 
-	public function clear(baseColor = 0x00000000, baseImage: kha.Image = null) {
+	public function clear(baseColor = 0x00000000, baseImage: kha.Image = null, occlusion = 1.0, roughness = Layers.defaultRough, metallic = 0.0) {
 		texpaint.g4.begin();
 		texpaint.g4.clear(baseColor); // Base
 		texpaint.g4.end();
@@ -180,7 +180,7 @@ class LayerSlot {
 			texpaint_nor.g4.clear(kha.Color.fromFloats(0.5, 0.5, 1.0, 0.0)); // Nor
 			texpaint_nor.g4.end();
 			texpaint_pack.g4.begin();
-			texpaint_pack.g4.clear(kha.Color.fromFloats(1.0, Layers.defaultRough, 0.0, 0.0)); // Occ, rough, met
+			texpaint_pack.g4.clear(kha.Color.fromFloats(occlusion, roughness, metallic, 0.0)); // Occ, rough, met
 			texpaint_pack.g4.end();
 		}