Show checker for transparent layer

Sources/arm/Context.hx

@@ -10,6 +10,7 @@ import arm.util.RenderUtil;
 import arm.util.ParticleUtil;
 import arm.ui.UITrait;
 import arm.ui.UINodes;
+import arm.ui.UIView2D;
 import arm.node.MaterialParser;
 import arm.Tool;
 import arm.Project;
@@ -90,6 +91,7 @@ class Context {
 		if (current != null) current.begin(false);
 
 		UITrait.inst.hwnd.redraws = 2;
+		UIView2D.inst.hwnd.redraws = 2;
 	}
 
 	public static function selectTool(i: Int) {

Sources/arm/data/LayerSlot.hx

@@ -248,7 +248,7 @@ class LayerSlot {
 		l.texpaint_pack.g2.pipeline = null;
 		l.texpaint_pack.g2.end();
 
-		l.texpaint_preview.g2.begin(true, 0xff000000);
+		l.texpaint_preview.g2.begin(true, 0x00000000);
 		l.texpaint_preview.g2.drawScaledImage(texpaint_preview, 0, 0, texpaint_preview.width, texpaint_preview.height);
 		l.texpaint_preview.g2.end();
 
@@ -260,7 +260,7 @@ class LayerSlot {
 			l.texpaint_mask.g2.pipeline = null;
 			l.texpaint_mask.g2.end();
 
-			l.texpaint_mask_preview.g2.begin(true, 0xff000000);
+			l.texpaint_mask_preview.g2.begin(true, 0x00000000);
 			l.texpaint_mask_preview.g2.drawScaledImage(texpaint_mask_preview, 0, 0, texpaint_mask_preview.width, texpaint_mask_preview.height);
 			l.texpaint_mask_preview.g2.end();
 		}

Sources/arm/ui/TabLayers.hx

@@ -134,10 +134,18 @@ class TabLayers {
 
 				if (l.getChildren() == null) {
 					var icon = l.material_mask == null ? l.texpaint_preview : l.material_mask.imageIcon;
+					if (l.material_mask == null) {
+						var r = Res.tile50(icons, 4, 1);
+						var _x = ui._x;
+						var _y = ui._y;
+						ui.curRatio--;
+						ui.image(icons, 0xffffffff, null, r.x, r.y, r.w, r.h);
+						ui._x = _x;
+						ui._y = _y;
+					}
 					state = ui.image(icon, 0xffffffff, iconH);
 				}
 				else { // Group
-					var icons = Res.get("icons.k");
 					var folder = Res.tile50(icons, 2, 1);
 					state = ui.image(icons, ui.t.LABEL_COL - 0x00202020, iconH, folder.x, folder.y, folder.w, folder.h);
 				}
@@ -173,6 +181,14 @@ class TabLayers {
 					ui._x += Std.int(4 * ui.SCALE());
 					ui._y += 3;
 
+					// var r = Res.tile50(icons, 4, 1);
+					// var _x = ui._x;
+					// var _y = ui._y;
+					// ui.curRatio--;
+					// ui.image(icons, 0xffffffff, null, r.x, r.y, r.w, r.h);
+					// ui._x = _x;
+					// ui._y = _y;
+
 					ui.g.pipeline = UIView2D.inst.pipe;
 					#if kha_opengl
 					ui.currentWindow.texture.g4.setPipeline(UIView2D.inst.pipe);

Sources/arm/ui/UITrait.hx

@@ -743,7 +743,7 @@ class UITrait {
 					var target = l.texpaint_mask_preview;
 					var source = l.texpaint_mask;
 					var g2 = target.g2;
-					g2.begin(true, 0xff000000);
+					g2.begin(true, 0x00000000);
 					g2.drawScaledImage(source, 0, 0, target.width, target.height);
 					g2.end();
 				}
@@ -757,7 +757,7 @@ class UITrait {
 			var target = Context.layerIsMask ? l.texpaint_mask_preview : l.texpaint_preview;
 			var source = Context.layerIsMask ? l.texpaint_mask : l.texpaint;
 			var g2 = target.g2;
-			g2.begin(true, 0xff000000);
+			g2.begin(true, 0x00000000);
 			g2.drawScaledImage(source, 0, 0, target.width, target.height);
 			g2.end();
 			hwnd.redraws = 2;