From c63a8947ce01c10235441350c2a209f474a8c9d2 Mon Sep 17 00:00:00 2001
From: Jonas Kulla <Nyocurio@gmail.com>
Date: Fri, 2 Jan 2015 00:09:53 +0100
Subject: [PATCH] Tilemap: Don't emit draw with zero quads

This is illegal on some mobile drivers.
---
 src/tilemap.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/tilemap.cpp b/src/tilemap.cpp
index dd944f5..92a1dde 100644
--- a/src/tilemap.cpp
+++ b/src/tilemap.cpp
@@ -1000,6 +1000,9 @@ void GroundLayer::updateVboCount()
 
 void GroundLayer::draw()
 {
+	if (p->groundVert.size() == 0)
+		return;
+
 	ShaderBase *shader;
 
 	p->bindShader(shader);