diff --git a/glmodelview.cpp b/glmodelview.cpp
index 74bcb5c..3f0d506 100644
--- a/glmodelview.cpp
+++ b/glmodelview.cpp
@@ -1,11 +1,17 @@
 #include "glmodelview.h"
 #include "stereomaker.h"
-#include "imageviewer.h"
+#if defined(__APPLE__)
+#define GL_SILENCE_DEPRECATION
+#include <OpenGL/gl.h>
+#include <OpenGL/glu.h>
+#else
+#include <GL/gl.h>
 #include <GL/glu.h>
+#endif
 #include <math.h>
 #include <stdio.h>
-#include <QGLShader>
-#include <QGLShaderProgram>
+#include <QOpenGLShader>>
+#include <QOpenGLShaderProgram>>
 #include <QMessageBox>
 #include <QProcess>
 #include <QCoreApplication>
@@ -13,7 +19,7 @@
 #include "trirender.h"
 
 GlModelView::GlModelView(QWidget *parent) :
-    QGLWidget(parent),m_zoom(500),m_contrast(100)
+    QOpenGLWidget(parent),m_zoom(500),m_contrast(100)
 {
     m_antialias=true;
     m_noShaders=false;
@@ -24,20 +30,20 @@ GlModelView::GlModelView(QWidget *parent) :
 
 void GlModelView::initializeGL()
 {
+    /* TODO
     if (!context()->isValid())
     {
         QMessageBox::warning(this,"No OpenGL Driver","Depth Map generation is still available");
-    }
-
+    }*/
 
-    if (QGLShader::hasOpenGLShaders(QGLShader::Vertex,context()) )
+    if (QOpenGLShader::hasOpenGLShaders(QOpenGLShader::Vertex,context()) )
     {
         QString declarations= "//uniform mat4 gl_ModelViewMatrix;  uniform mat4 gl_ProjectionMatrix; attribute vec4 gl_Vertex;\n";
         QString codev=       "void main()  {gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;"\
                 "float zmax=-1.0;"\
                 "float zmin=1.0;"\
                 "float scale=(zmax-zmin);float offs=-zmin;float z=(gl_Position.z/gl_Position.w); gl_FrontColor = vec4((z+offs)/scale,(z+offs)/scale,(z+offs)/scale,1.0); } ";
-        QGLShader shaderv(QGLShader::Vertex);
+        QOpenGLShader shaderv(QOpenGLShader::Vertex);
         bool compile_success=shaderv.compileSourceCode(declarations+codev);
         if (!compile_success)
         {
@@ -45,10 +51,11 @@ void GlModelView::initializeGL()
         }
         if (compile_success)
         {
-            QGLShaderProgram program(context());
-            program.addShader(&shaderv);
-            program.link();
-            program.bind();
+            QOpenGLShaderProgram *program;
+            program = new QOpenGLShaderProgram(this);
+            program->addShader(&shaderv);
+            program->link();
+            program->bind();
         }
         else
             m_noShaders=true;
diff --git a/glmodelview.h b/glmodelview.h
index 52c8e75..a3e08e5 100644
--- a/glmodelview.h
+++ b/glmodelview.h
@@ -1,12 +1,12 @@
 #ifndef GLMODELVIEW_H
 #define GLMODELVIEW_H
 
-#include <QGLWidget>
+#include <QOpenGLWidget>
 #include <QImage>
 #include <model3d.h>
 #include "basicimagewidget.h"
 
-class GlModelView : public QGLWidget,public BasicImageWidget
+class GlModelView : public QOpenGLWidget,public BasicImageWidget
 {
     Q_OBJECT
 public:
diff --git a/main.cpp b/main.cpp
index 0b8d633..d97f398 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,15 +1,15 @@
 #include <QApplication>
 #include "mainwindow.h"
-#include <QGLFormat>
+#include <QSurfaceFormat>
 
 #include "parse.h"
 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
-    QGLFormat glf = QGLFormat::defaultFormat();
-    glf.setSampleBuffers(true);
+    QSurfaceFormat glf = QSurfaceFormat::defaultFormat();
+    //TODO: glf.setSampleBuffers(true);
     glf.setSamples(4);
-    QGLFormat::setDefaultFormat(glf);
+    QSurfaceFormat::setDefaultFormat(glf);
     a.setWindowIcon(QIcon(":/images/stereograma.svg"));
     QCoreApplication::setOrganizationName("Kapandaria");
     QCoreApplication::setApplicationName("Stereograma");
diff --git a/model3d.cpp b/model3d.cpp
index 84b1796..be7b16f 100644
--- a/model3d.cpp
+++ b/model3d.cpp
@@ -1,5 +1,11 @@
 #include "model3d.h"
+#if defined(__APPLE__)
+#define GL_SILENCE_DEPRECATION
+#include <OpenGL/gl.h>
+#include <qopenglext.h>
+#else
 #include "qgl.h"
+#endif
 #include <stdio.h>
 #include <math.h>
 #include <limits.h>
diff --git a/stereograma.pro b/stereograma.pro
index d7448c6..d3c3d3b 100644
--- a/stereograma.pro
+++ b/stereograma.pro
@@ -4,8 +4,7 @@
 #
 #-------------------------------------------------
 
-QT       += core gui network opengl \
-    widgets
+QT       += core gui network openglwidgets widgets
 
 TARGET = stereograma
 TEMPLATE = app
diff --git a/stereomaker.cpp b/stereomaker.cpp
index 5581997..9fa1322 100644
--- a/stereomaker.cpp
+++ b/stereomaker.cpp
@@ -1,7 +1,7 @@
 //algorithm was taken from http://www.techmind.org/stereo/stech.html
 #include "stereomaker.h"
 #include <QPainter>
-#include <QTime>
+#include <QElapsedTimer>
 
 
 QVector<QRgb> StereoMaker::grayscale;
@@ -149,7 +149,7 @@ QImage StereoMaker::render(const QImage & map, const QImage & ptrn, Preset *pset
     int progbarval=0;
     int maxheight=dpi*(psettings->getMaximumDepth()-psettings->getMinimumDepth());
     //benchmark
-    QTime t_time;
+    QElapsedTimer t_time;
     t_time.start();
     unsigned int **patternptr=(unsigned int **)malloc(pattern_height*sizeof(void*));
     for (int i=pattern_height-1;i>=0;i--)
@@ -263,7 +263,7 @@ QImage StereoMaker::render(const QImage & map, const QImage & ptrn, Preset *pset
             qpbar->setValue(progbarval);
         }
     }
-    qDebug("Time elapsed: %d ms", t_time.elapsed());
+    qDebug("Time elapsed: %lld ms", t_time.elapsed());
     free(lookL);
     free(lookR);
     free(mapptr);