set the size to context and renderer before rendering

Change-Id: I2945a7b8647d0a40270b1e65cde2a0eb936ab1d1

chart2/source/view/charttypes/GL3DBarChart.cxx

@@ -67,6 +67,9 @@ void GL3DBarChart::create3DShapes()
 void GL3DBarChart::render()
 {
     mrWindow.getContext()->makeCurrent();
+    Size aSize = mrWindow.GetSizePixel();
+    mpRenderer->SetSize(aSize);
+    mrWindow.getContext()->setWinSize(aSize);
     for(boost::ptr_vector<opengl3D::Renderable3DObject>::iterator itr = maShapes.begin(),
             itrEnd = maShapes.end(); itr != itrEnd; ++itr)
     {

chart2/source/view/inc/GL3DRenderer.hxx

@@ -249,9 +249,9 @@ private:
     double m_dFreq;
 #endif
 
-    int m_iWidth;
+    sal_Int32 m_iWidth;
 
-    int m_iHeight;
+    sal_Int32 m_iHeight;
 
     float m_fZmax;