From 045ef96c222b65394921fadff630cdfb7739242c Mon Sep 17 00:00:00 2001
From: Porteries Tristan <republicthunderbolt9@gmail.com>
Date: Thu, 28 Apr 2016 08:30:51 +0000
Subject: [PATCH] UPBGE: Fix alpha sort with modifier.

Modifier deformer doesn't create a RAS_DisplayArray which mean that we can't
sort polygons with a modifier mesh.
---
 source/gameengine/Rasterizer/RAS_MeshObject.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/source/gameengine/Rasterizer/RAS_MeshObject.cpp b/source/gameengine/Rasterizer/RAS_MeshObject.cpp
index 010cd8b06ad4..728c981df15e 100644
--- a/source/gameengine/Rasterizer/RAS_MeshObject.cpp
+++ b/source/gameengine/Rasterizer/RAS_MeshObject.cpp
@@ -496,6 +496,11 @@ void RAS_MeshObject::SortPolygons(RAS_MeshSlot *ms, const MT_Transform &transfor
 
 	RAS_DisplayArray *array = ms->GetDisplayArray();
 
+	// If there's no vertex array it means that the we're using modifier deformer.
+	if (!array) {
+		return;
+	}
+
 	unsigned int nvert = 3;
 	unsigned int totpoly = array->m_index.size() / nvert;