From 6e7c6ebc07cf9845e93aa1e6e8a93ab37171b58d Mon Sep 17 00:00:00 2001
From: badlogic <badlogicgames@gmail.com>
Date: Mon, 17 Jul 2017 14:26:06 +0200
Subject: [PATCH] [cocos2d-x] Not submitting geometry when final opacity of
 attachment is 0

---
 spine-cocos2dx/src/spine/SkeletonRenderer.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/spine-cocos2dx/src/spine/SkeletonRenderer.cpp b/spine-cocos2dx/src/spine/SkeletonRenderer.cpp
index e9fdfa13b..e3035e23e 100644
--- a/spine-cocos2dx/src/spine/SkeletonRenderer.cpp
+++ b/spine-cocos2dx/src/spine/SkeletonRenderer.cpp
@@ -281,6 +281,9 @@ void SkeletonRenderer::draw (Renderer* renderer, const Mat4& transform, uint32_t
 		}
 		
 		color.a *= nodeColor.a * _skeleton->color.a * slot->color.a * 255;
+		// skip rendering if the color of this attachment is 0
+		if (color.a == 0)
+			continue;
 		float multiplier = _premultipliedAlpha ? color.a : 255;
 		color.r *= nodeColor.r * _skeleton->color.r * slot->color.r * multiplier;
 		color.g *= nodeColor.g * _skeleton->color.g * slot->color.g * multiplier;