Added bone inherit rotation and scale, and slot additive blending.

spine-libgdx/src/com/esotericsoftware/spine/Bone.java

@@ -69,9 +69,14 @@ public class Bone {
 		if (parent != null) {
 			worldX = x * parent.m00 + y * parent.m01 + parent.worldX;
 			worldY = x * parent.m10 + y * parent.m11 + parent.worldY;
-			worldScaleX = parent.worldScaleX * scaleX;
-			worldScaleY = parent.worldScaleY * scaleY;
-			worldRotation = parent.worldRotation + rotation;
+			if (data.inheritScale) {
+				worldScaleX = parent.worldScaleX * scaleX;
+				worldScaleY = parent.worldScaleY * scaleY;
+			} else {
+				worldScaleX = scaleX;
+				worldScaleY = scaleY;
+			}
+			worldRotation = data.inheritRotation ? parent.worldRotation + rotation : rotation;
 		} else {
 			worldX = x;
 			worldY = y;

spine-libgdx/src/com/esotericsoftware/spine/BoneData.java

@@ -32,6 +32,7 @@ public class BoneData {
 	float x, y;
 	float rotation;
 	float scaleX = 1, scaleY = 1;
+	boolean inheritScale = true, inheritRotation = true;
 
 	/** @param parent May be null. */
 	public BoneData (String name, BoneData parent) {
@@ -111,6 +112,22 @@ public class BoneData {
 		this.scaleY = scaleY;
 	}
 
+	public boolean getInheritScale () {
+		return inheritScale;
+	}
+
+	public void setInheritScale (boolean inheritScale) {
+		this.inheritScale = inheritScale;
+	}
+
+	public boolean getInheritRotation () {
+		return inheritRotation;
+	}
+
+	public void setInheritRotation (boolean inheritRotation) {
+		this.inheritRotation = inheritRotation;
+	}
+
 	public String toString () {
 		return name;
 	}

spine-libgdx/src/com/esotericsoftware/spine/SkeletonBinary.java

@@ -98,7 +98,7 @@ public class SkeletonBinary {
 				String parentName = input.readString();
 				if (parentName != null) {
 					parent = skeletonData.findBone(parentName);
-					if (parent == null) throw new SerializationException("Bone not found: " + parentName);
+					if (parent == null) throw new SerializationException("Parent bone not found: " + parentName);
 				}
 				BoneData boneData = new BoneData(name, parent);
 				boneData.x = input.readFloat() * scale;
@@ -107,6 +107,8 @@ public class SkeletonBinary {
 				boneData.scaleY = input.readFloat();
 				boneData.rotation = input.readFloat();
 				boneData.length = input.readFloat() * scale;
+				boneData.inheritScale = input.readByte() == 1;
+				boneData.inheritRotation = input.readByte() == 1;
 				skeletonData.addBone(boneData);
 			}
 
@@ -119,6 +121,7 @@ public class SkeletonBinary {
 				SlotData slotData = new SlotData(slotName, boneData);
 				Color.rgba8888ToColor(slotData.getColor(), input.readInt());
 				slotData.setAttachmentName(input.readString());
+				slotData.additiveBlending = input.readByte() == 1;
 				skeletonData.addSlot(slotData);
 			}
 

spine-libgdx/src/com/esotericsoftware/spine/SkeletonJson.java

@@ -100,6 +100,8 @@ public class SkeletonJson {
 			boneData.rotation = boneMap.getFloat("rotation", 0);
 			boneData.scaleX = boneMap.getFloat("scaleX", 1);
 			boneData.scaleY = boneMap.getFloat("scaleY", 1);
+			boneData.inheritScale = boneMap.getBoolean("inheritScale", true);
+			boneData.inheritRotation = boneMap.getBoolean("inheritRotation", true);
 			skeletonData.addBone(boneData);
 		}
 
@@ -116,6 +118,8 @@ public class SkeletonJson {
 
 			slotData.setAttachmentName(slotMap.getString("attachment", null));
 
+			slotData.additiveBlending = slotMap.getBoolean("additive", false);
+
 			skeletonData.addSlot(slotData);
 		}
 

spine-libgdx/src/com/esotericsoftware/spine/SkeletonRenderer.java

@@ -4,12 +4,14 @@ package com.esotericsoftware.spine;
 import com.esotericsoftware.spine.attachments.Attachment;
 import com.esotericsoftware.spine.attachments.RegionAttachment;
 
+import com.badlogic.gdx.graphics.GL11;
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
 import com.badlogic.gdx.utils.Array;
 
 public class SkeletonRenderer {
 	public void draw (SpriteBatch batch, Skeleton skeleton) {
 		Array<Slot> drawOrder = skeleton.drawOrder;
+		boolean additive = false;
 		for (int i = 0, n = drawOrder.size; i < n; i++) {
 			Slot slot = drawOrder.get(i);
 			Attachment attachment = slot.attachment;
@@ -17,8 +19,16 @@ public class SkeletonRenderer {
 				RegionAttachment regionAttachment = (RegionAttachment)attachment;
 				regionAttachment.updateVertices(slot);
 				float[] vertices = regionAttachment.getVertices();
+				if (slot.data.getAdditiveBlending() != additive) {
+					additive = !additive;
+					if (additive)
+						batch.setBlendFunction(GL11.GL_SRC_ALPHA, GL11.GL_ONE);
+					else
+						batch.setBlendFunction(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
+				}
 				batch.draw(regionAttachment.getRegion().getTexture(), vertices, 0, vertices.length);
 			}
 		}
+		if (additive) batch.setBlendFunction(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
 	}
 }

spine-libgdx/src/com/esotericsoftware/spine/SlotData.java

@@ -32,6 +32,7 @@ public class SlotData {
 	final BoneData boneData;
 	final Color color = new Color(1, 1, 1, 1);
 	String attachmentName;
+	boolean additiveBlending;
 
 	SlotData () {
 		name = null;
@@ -67,6 +68,14 @@ public class SlotData {
 		return attachmentName;
 	}
 
+	public boolean getAdditiveBlending () {
+		return additiveBlending;
+	}
+
+	public void setAdditiveBlending (boolean additiveBlending) {
+		this.additiveBlending = additiveBlending;
+	}
+
 	public String toString () {
 		return name;
 	}

spine-libgdx/src/com/esotericsoftware/spine/attachments/RegionAttachment.java

@@ -40,7 +40,7 @@ import com.badlogic.gdx.utils.NumberUtils;
 /** Attachment that displays a texture region. */
 public class RegionAttachment extends Attachment {
 	private TextureRegion region;
-	private float x, y, scaleX, scaleY, rotation, width, height;
+	private float x, y, scaleX = 1, scaleY = 1, rotation, width, height;
 	private final float[] vertices = new float[20];
 	private final float[] offset = new float[8];