Switched to using Qt for loading extensions, instead of GLEW.

examples/common/CMakeLists.txt

@@ -19,13 +19,11 @@
 # 3. This notice may not be removed or altered from any source
 # distribution.
 
-project(GLEW)
+#project(GLEW)
 
-set(SRC_FILES ../common/glew/glew.cpp)
-
-add_definitions(-DGLEW_STATIC)
+#set(SRC_FILES ../common/glew/glew.cpp)
 
 #find_package(OpenGL REQUIRED)
 #include_directories(${OPENGL_INCLUDE_DIR})
-add_library(glew STATIC ${SRC_FILES})
-SET_PROPERTY(TARGET glew PROPERTY FOLDER "Examples/Common")
+#add_library(glew STATIC ${SRC_FILES})
+#SET_PROPERTY(TARGET glew PROPERTY FOLDER "Examples/Common")

examples/common/OpenGLWidget.cpp

@@ -61,11 +61,10 @@ void OpenGLWidget::mouseMoveEvent(QMouseEvent* event)
 ////////////////////////////////////////////////////////////////////////////////
 void OpenGLWidget::initializeGL()
 {
-	GLenum err = glewInit();
-	if (GLEW_OK != err)
+	if (!initializeOpenGLFunctions())
 	{
-		/* Problem: glewInit failed, something is seriously wrong. */
-		std::cout << "GLEW Error: " << glewGetErrorString(err) << std::endl;
+		std::cerr << "Could not initialize OpenGL functions" << std::endl;
+		exit(EXIT_FAILURE);
 	}
 	
 	//Print out some information about the OpenGL implementation.

examples/common/OpenGLWidget.h

@@ -26,10 +26,12 @@ distribution.
 
 #include "PolyVox/Mesh.h"
 
-#include "glew/glew.h"
+#include <QOpenGLFunctions_3_1>
 
 #include <QGLWidget>
 #include <QGLShaderProgram>
+#include <QOpenGLVertexArrayObject>
+#include <QOpenGLBuffer>
 
 // This structure holds all the data required
 // to render one of our meshes through OpenGL. 
@@ -47,7 +49,7 @@ struct OpenGLMeshData
 // Our OpenGLWidget is used by all the examples to render the extracted meshes. It is
 // fairly specific to our needs (you probably won't want to use it in your own project)
 // but should provide a useful illustration of how PolyVox meshes can be rendered.
-class OpenGLWidget : public QGLWidget
+class OpenGLWidget : public QGLWidget, protected QOpenGLFunctions_3_1
 {
 public:
 	// Constructor