From a5008e221ee4a55f18770dd05cd0ffb5374f1ebb Mon Sep 17 00:00:00 2001
From: NathanSweet <nathan.sweet@gmail.com>
Date: Mon, 30 Sep 2013 14:50:04 +0200
Subject: [PATCH] Additive blending for spine-lua and spine-corona.

---
 spine-corona/spine-corona/spine.lua | 4 ++++
 spine-lua/SkeletonJson.lua          | 7 ++++---
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/spine-corona/spine-corona/spine.lua b/spine-corona/spine-corona/spine.lua
index d41e95c43..8e40cf516 100644
--- a/spine-corona/spine-corona/spine.lua
+++ b/spine-corona/spine-corona/spine.lua
@@ -115,6 +115,10 @@ function spine.Skeleton.new (skeletonData, group)
 						print("Error creating image: " .. attachment.name)
 						image = spine.Skeleton.failed
 					end
+					print(slot.data.additiveBlending)
+					if slot.data.additiveBlending then
+						image.blendMode = "add"
+					end
 					images[slot] = image
 				end
 				-- Position image based on attachment and bone.
diff --git a/spine-lua/SkeletonJson.lua b/spine-lua/SkeletonJson.lua
index 5fdd965f5..a58dfb897 100644
--- a/spine-lua/SkeletonJson.lua
+++ b/spine-lua/SkeletonJson.lua
@@ -115,9 +115,10 @@ function SkeletonJson.new (attachmentLoader)
 				end
 
 				slotData.attachmentName = slotMap["attachment"]
-        table.insert(skeletonData.slots, slotData)
-        skeletonData.slotNameIndices[slotData.name] = #skeletonData.slots
-        
+				slotData.additiveBlending = slotMap["additive"]
+
+				table.insert(skeletonData.slots, slotData)
+				skeletonData.slotNameIndices[slotData.name] = #skeletonData.slots
 			end
 		end