Qt problem on white opengl texture

Pablovalo

Hello and been following tutorials and wanted to pass them nehe qt, but when I wanted to do texture mapping texture is always blank, and tested with external libraries and feel the same, I pass my code to see if they find the problem

Tutorial5.h
@#ifndef TUTORIAL5_H
#define TUTORIAL5_H

#include <QGLWidget>
#include <QTimer>
#include <QDebug>
#include <Qimage>
#include <QString>
#include <GL/gl.h>
#include <GL/glu.h>
#include "SOIL.h"

class Tutorial5 : public QGLWidget
{
Q_OBJECT
public:
explicit Tutorial5(QGLWidget *parent = 0);

signals:

public slots:

private slots:
void myUpdate();

private:
void initializeGL();
void resizeGL(int ancho, int alto);
void paintGL();
void loadTextures();

QTimer myTimer;
GLfloat rotPiramide;
GLfloat rotCuadrado;
GLuint texture[1];

};

#endif // TUTORIAL5_H
@

Tutorial5.cpp
@
#include "tutorial5.h"

Tutorial5::Tutorial5(QGLWidget *parent) :
QGLWidget(parent)
{

rotPiramide = 0.0f;
rotCuadrado = 0.0f;
connect(&myTimer, SIGNAL(timeout()), this, SLOT(myUpdate()));
myTimer.start(0);

}

void Tutorial5::initializeGL()
{

loadTextures();

glEnable( GL_BLEND );
glShadeModel( GL_SMOOTH );
glClearColor( 0.0f, 0.0f, 0.0f, 0.0f);

glClearDepth( 1.0f );
glEnable( GL_DEPTH_TEST );
glDepthFunc( GL_LEQUAL );

glHint( GL_PERSPECTIVE_CORRECTION_HINT , GL_NICEST );

}

void Tutorial5::resizeGL(int ancho, int alto)
{
if( alto == 0)
{
alto = 1;
}

glViewport( 0, 0, (GLsizei) ancho, (GLsizei) alto );
glLoadIdentity();

glMatrixMode( GL_PROJECTION );
glLoadIdentity();

gluPerspective( 45.0f, (GLdouble)ancho / (GLdouble)alto, 0.1f, 100.0f );

glMatrixMode( GL_MODELVIEW );
glLoadIdentity();

}

void Tutorial5::paintGL()
{

glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glLoadIdentity();

glTranslatef( -1.5f, 0.0f, -6.0f );


glEnable(GL_TEXTURE_2D);
glBindTexture (GL_TEXTURE_2D, texture[0]);
glBegin( GL_QUADS );

 glTexCoord2f(0.0f, 0.0f); glVertex3f (-1.0f,-1.0f, 1.0f);  // izquierdo inferior de la textura y el Quad
 glTexCoord2f (1.0f, 0.0f); glVertex3f (1.0f,-1.0f, 1.0f);  // inferior derecha de la textura y el Quad
 glTexCoord2f (1.0f, 1.0f); glVertex3f (1.0f, 1.0f, 1.0f);  // superior derecha de la textura y el Quad
 glTexCoord2f (0.0f, 1.0f); glVertex3f (-1.0f, 1.0f, 1.0f);  // superior izquierda de la textura y el Quad
glEnd();

}

void Tutorial5::myUpdate()
{
rotPiramide += 0.2f;
rotCuadrado -= 0.15f;
updateGL();
}

void Tutorial5::loadTextures()
{
QImage t;
QImage b;

b.load("/Data/nehe.bmp");


t = QGLWidget::convertToGLFormat( b );
glGenTextures( 1, &texture[0] );
glBindTexture( GL_TEXTURE_2D, texture[0] );
glTexImage2D( GL_TEXTURE_2D, 0, 3, t.width(), t.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, t.bits() );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );

}
@

ZapB

Which tutorial is this from please? This is teaching legacy OpenGL coding

ZapB

BTW in Qt 5.2 you will be able to use "QOpenGLTexture":http://doc-snapshot.qt-project.org/qt5-stable/qopengltexture.html#details