From cb52a785425ca69930f0f224c3029e6f7fb2a63a Mon Sep 17 00:00:00 2001
From: "Thiago Marcos P. Santos" <thiago@mapbox.com>
Date: Thu, 10 Dec 2015 19:12:08 -0800
Subject: [PATCH] [Qt] Define the viewport size before rendering

---
 platform/qt/app/mapwindow.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/platform/qt/app/mapwindow.cpp b/platform/qt/app/mapwindow.cpp
index 08581835a..8827bea4f 100644
--- a/platform/qt/app/mapwindow.cpp
+++ b/platform/qt/app/mapwindow.cpp
@@ -152,6 +152,8 @@ void MapWindow::resizeGL(int w, int h)
 
 void MapWindow::paintGL()
 {
+    glViewport(0, 0, width(), height());
+
     m_frameDraws++;
     m_map.render();
 }