Begin layer groups

Sources/arm/node/MakeMesh.hx

@@ -34,7 +34,7 @@ class MakeMesh {
 			vert.write('float height = 0.0;');
 			var numLayers = 0;
 			for (l in Project.layers) {
-				if (!l.visible) continue;
+				if (!l.isVisible() || l.getChildren() != null) continue;
 				if (numLayers > 16) break;
 				numLayers++;
 				vert.add_uniform('sampler2D texpaint_pack_vert' + l.id, '_texpaint_pack_vert' + l.id);
@@ -85,7 +85,7 @@ class MakeMesh {
 			frag.write('mat3 TBN = cotangentFrame(n, -vVec, texCoord);');
 			#end
 
-			if (Project.layers[0].visible) {
+			if (Project.layers[0].isVisible()) {
 
 				if (Context.layer.paintBase) {
 					frag.add_shared_sampler('sampler2D texpaint');
@@ -207,14 +207,14 @@ class MakeMesh {
 					if (start == 1) break;
 					start--;
 					var l = Project.layers[len - i];
-					if (l.visible) {
+					if (l.isVisible() && l.getChildren() == null) {
 						count++;
 						if (count >= maxLayers) break;
 					}
 				}
 				for (i in start...len) {
 					var l = Project.layers[i];
-					if (!l.visible) continue;
+					if (!l.isVisible() || l.getChildren() != null) continue;
 					var id = l.id;
 
 					if (l.objectMask > 0) {

Sources/arm/node/brush/BrushOutputNode.hx

@@ -50,13 +50,17 @@ class BrushOutputNode extends LogicNode {
 		// Do not paint over fill layer
 		var fillLayer = Context.layer.material_mask != null && Context.tool != ToolPicker && !Context.layerIsMask;
 
+		// Do not paint over groups
+		var groupLayer = Context.layer.getChildren() != null;
+
 		// Paint bounds
 		if (UITrait.inst.paintVec.x < right && UITrait.inst.paintVec.x > left &&
 			UITrait.inst.paintVec.y < 1 && UITrait.inst.paintVec.y > 0 &&
 			!UITrait.inst.ui.isHovered &&
 			!UITrait.inst.ui.isScrolling &&
 			!fillLayer &&
-			(Context.layer.visible || UITrait.inst.paint2d) &&
+			!groupLayer &&
+			(Context.layer.isVisible() || UITrait.inst.paint2d) &&
 			!arm.App.isDragging &&
 			!arm.App.isResizing &&
 			@:privateAccess UITrait.inst.ui.comboSelectedHandle == null &&