[starling] Updated to Starling 2.4, fixed #1125. When clipping, we can't reuse the cached Mesh of the clipped attachment, but must allocate a new one. Otherwise the Starling MeshBatcher explodes.

spine-starling/spine-starling-example/.settings/com.powerflasher.fdt.classpath

@@ -5,5 +5,5 @@
     <AS3Classpath generateProblems="true" sdkBased="false" type="source" useAsSharedCode="false">src</AS3Classpath>
     <AS3Classpath generateProblems="true" sdkBased="false" type="lib" useAsSharedCode="false">lib/spine-starling.swc</AS3Classpath>
     <AS3Classpath generateProblems="true" sdkBased="false" type="lib" useAsSharedCode="false">lib/spine-as3.swc</AS3Classpath>
-    <AS3Classpath generateProblems="true" sdkBased="false" type="lib" useAsSharedCode="false">lib/starling-2.1.swc</AS3Classpath>
+    <AS3Classpath generateProblems="true" sdkBased="false" type="lib" useAsSharedCode="false">lib/starling-2.4.swc</AS3Classpath>
 </AS3Classpath>

spine-starling/spine-starling/.settings/com.powerflasher.fdt.classpath

@@ -4,5 +4,5 @@
     <AS3Classpath generateProblems="true" sdkBased="false" type="source" useAsSharedCode="false">src</AS3Classpath>
     <AS3Classpath generateProblems="true" sdkBased="false" type="lib" useAsSharedCode="false">lib/spine-as3.swc</AS3Classpath>
     <AS3Classpath generateProblems="true" sdkBased="true" type="lib" useAsSharedCode="false">frameworks/libs/air/airglobal.swc</AS3Classpath>
-    <AS3Classpath generateProblems="true" sdkBased="false" type="lib" useAsSharedCode="false">lib/starling-2.1.swc</AS3Classpath>
+    <AS3Classpath generateProblems="true" sdkBased="false" type="lib" useAsSharedCode="false">lib/starling-2.4.swc</AS3Classpath>
 </AS3Classpath>

spine-starling/spine-starling/src/spine/starling/SkeletonSprite.as

@@ -98,6 +98,7 @@ package spine.starling {
 			for (var i : int = 0, n : int = drawOrder.length; i < n; ++i) {
 				var worldVertices : Vector.<Number> = _tempVertices;
 				var slot : Slot = drawOrder[i];
+
 				if (slot.attachment is RegionAttachment) {
 					var region : RegionAttachment = slot.attachment as RegionAttachment;
 					verticesLength = 4 * 2;
@@ -146,7 +147,7 @@ package spine.starling {
 						indexData.numIndices = indicesLength;
 						indexData.trim();
 					}
-					indexData = mesh.getIndexData();				
+					indexData = mesh.getIndexData();
 					attachmentColor = meshAttachment.color;
 					uvs = meshAttachment.uvs;					
 				} else if (slot.attachment is ClippingAttachment) {
@@ -169,17 +170,22 @@ package spine.starling {
 				if (clipper.isClipping()) {
 					clipper.clipTriangles(worldVertices, indices, indices.length, uvs);
 					
+					// Need to create a new mesh here, see https://github.com/EsotericSoftware/spine-runtimes/issues/1125
+					mesh = new SkeletonMesh(mesh.texture);
+					if (_twoColorTint) mesh.setStyle(mesh.style);
+					indexData = mesh.getIndexData();
+
 					verticesCount = clipper.clippedVertices.length >> 1;
 					worldVertices = clipper.clippedVertices;
 					uvs = clipper.clippedUvs;					
 					
 					indices = clipper.clippedTriangles;
 					indicesLength = indices.length;
+					indexData.numIndices = indicesLength;
+					indexData.trim();
 					for (ii = 0; ii < indicesLength; ii++) {
 						indexData.setIndex(ii, indices[ii]);
 					}
-					indexData.numIndices = indicesLength;
-					indexData.trim();
 				}
 
 				vertexData = mesh.getVertexData();
@@ -214,8 +220,11 @@ package spine.starling {
 						mesh.setTexCoords(ii, uvs[iii], uvs[iii + 1]);
 					}				
 				}
-				painter.state.blendMode = blendModes[slot.data.blendMode.ordinal];				
-				painter.batchMesh(mesh);
+				if (indexData.numIndices > 0 && vertexData.numVertices > 0) {
+					painter.state.blendMode = blendModes[slot.data.blendMode.ordinal];
+					painter.batchMesh(mesh);
+					painter.finishMeshBatch();
+				}
 				
 				clipper.clipEndWithSlot(slot);
 			}