The easiest way to do this is to include GLEW in your project, and then initialise GLEW early on in your code – which will automatically make extensions available as needed. Using GLEW is simple, and there’s some example code you could look at here: Simple Texture Loading with DevIL Revisited, or of course there’s always Google =D

Alternatively, you could just not use mipmaps by setting the minification and/or magnification filters to use something like GL_LINEAR instead of GL_LINEAR_MIPMAP_LINEAR or such, at which point you can completely remove the call to glGenerateMipmap!

Hope this helps.

I dont have Kinect,
I try use my webcam and i have a white screen (no texture), only the OpenGL square.
I just comment the 2 lines in main function:

//capture.retrieve(camFrame, CV_CAP_OPENNI_BGR_IMAGE);
//capture.retrieve(depthFrame, CV_CAP_OPENNI_DISPARITY_MAP);

And change this in main function:

cv::VideoCapture capture;
capture.open(0);

capture >> camFrame;

// Draw texture contents
draw(camFrame, camFrame);

Any sugestion?

I’ll merge it all together soon.

// DetectGLCanvas.h

#pragma once

#include “wx/glcanvas.h”
#include “wx/dcclient.h”
//
//
//// OpenGL view data
//struct GLData // todo get rid of this into the class itself
//{
// bool initialized; // has OpenGL been initialized?
// float beginx, beginy; // position of mouse
// // float quat[4]; // orientation of object //todo remove this entire struct
// // float zoom; // field of view in degrees
//};

namespace cv{ // Forward declaration of the Mat object within the cv namespace
class Mat; //…

// —————————–

// DetectGLCanvas.cpp

#pragma once

#include “glew.h” // This needs to be included before GL/gl.h and that is included in App.h along with wx/glcanvas.h
#include “detect_gl_canvas.h”
#include “App.h”
#include “GL/glu.h” //this is included in glew so it doesnt need to be here soon

#include “opencv2/core/core.hpp”
#include “opencv2/core/mat.hpp”
#include “opencv2/highgui/highgui.hpp”
#include “opencv2/imgproc/imgproc.hpp”

#include “opencv2/contrib/contrib.hpp”
#include “opencv2/objdetect/objdetect.hpp”
#include “opencv2/features2d/features2d.hpp”
//#include “opencv2/core/gpumat.hpp”
//#include “opencv2/gpu/gpu.hpp”

#include “wx/app.h”
#include “wx/msgdlg.h” //todo remove later

BEGIN_EVENT_TABLE(DetectGLCanvas, wxGLCanvas)
EVT_SIZE(DetectGLCanvas::OnSize) //…