source: trunk/examples/opengl/textures/glwidget.cpp@ 1168

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#include <QtGui>
#include <QtOpenGL>

#include "glwidget.h"

GLWidget::GLWidget(QWidget *parent, QGLWidget *shareWidget)
    : QGLWidget(parent, shareWidget)
{
    clearColor = Qt::black;
    xRot = 0;
    yRot = 0;
    zRot = 0;
#ifdef QT_OPENGL_ES_2
    program = 0;
#endif
}

GLWidget::~GLWidget()
{
}

QSize GLWidget::minimumSizeHint() const
{
    return QSize(50, 50);
}

QSize GLWidget::sizeHint() const
{
    return QSize(200, 200);
}

void GLWidget::rotateBy(int xAngle, int yAngle, int zAngle)
{
    xRot += xAngle;
    yRot += yAngle;
    zRot += zAngle;
    updateGL();
}

void GLWidget::setClearColor(const QColor &color)
{
    clearColor = color;
    updateGL();
}

void GLWidget::initializeGL()
{
    makeObject();

    glEnable(GL_DEPTH_TEST);
    glEnable(GL_CULL_FACE);
#ifndef QT_OPENGL_ES_2
    glEnable(GL_TEXTURE_2D);
#endif

#ifdef QT_OPENGL_ES_2

#define PROGRAM_VERTEX_ATTRIBUTE 0
#define PROGRAM_TEXCOORD_ATTRIBUTE 1

    QGLShader *vshader = new QGLShader(QGLShader::Vertex, this);
    const char *vsrc =
        "attribute highp vec4 vertex;\n"
        "attribute mediump vec4 texCoord;\n"