bool Reflection::paintGL()
{
// Pass 1. Draw scene reversed and store it to the texture
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
m_pProgram->bind();
m_pProgram->setUniformValue("factor", (float)-1.0);
m_pProgram->setUniformValue("texture", false);
m_pProgram->setUniformValue("colorMap", 0);
m_pProgram->setUniformValue("SIZE", QVector2D(glwidget()->width(), glwidget()->height()));
Box b = scene()->boundingBox();
m_pProgram->setUniformValue("radius", b.radius());
m_pProgram->setUniformValue("boundingMin", b.min());
m_pProgram->setUniformValue("boundingMax", b.max());
m_pProgram->setUniformValue("modelViewProjectionMatrix",
camera()->projectionMatrix() *
camera()->modelviewMatrix());
m_pProgram->setUniformValue("modelViewMatrix", camera()->modelviewMatrix());
m_pProgram->setUniformValue("normalMatrix", camera()->modelviewMatrix().normalMatrix());
// Ligth specs
m_pProgram->setUniformValue("lightAmbient", QVector4D(1., 1., 1., 1.));
m_pProgram->setUniformValue("lightDiffuse", QVector4D(1., 1., 1., 1.));
m_pProgram->setUniformValue("lightSpecular", QVector4D(1., 1., 1., 1.));
m_pProgram->setUniformValue("lightPosition", QVector4D(100., 100., 100., 1.));
m_pProgram->setUniformValue("matAmbient", QVector4D(.5, .4, .0, 1.));
m_pProgram->setUniformValue("matDiffuse", QVector4D(.5, .4, .0, 1.));
m_pProgram->setUniformValue("matSpecular", QVector4D(1., 1., 1., 1.));
m_pProgram->setUniformValue("matShininess", (float) 30.);
drawPlugin()->drawScene();
// Get texture
glBindTexture(GL_TEXTURE_2D, m_textureId);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, glwidget()->width(), glwidget()->height());
glGenerateMipmap(GL_TEXTURE_2D);
// Pass 2 Draw Scene normal
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
m_pProgram->setUniformValue("factor", (float)1.0);
drawPlugin()->drawScene();
// Pass 3 Draw quad using texture
m_pProgram->setUniformValue("texture", true);
glBindVertexArray(m_VAO_rect);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glBindVertexArray(0);
m_pProgram->release();
glBindTexture(GL_TEXTURE_2D, 0);
return true;
}
void Reflection::onPluginLoad()
{
// Resize to power-of-two viewport
//glwidget()->resize(IMAGE_WIDTH, IMAGE_HEIGHT);
// Carregar shader, compile & link
m_pVs = new QGLShader(QGLShader::Vertex, this);
m_pVs->compileSourceFile(":/reflection.vert");
m_pFs = new QGLShader(QGLShader::Fragment, this);
m_pFs->compileSourceFile(":/reflection.frag");
m_pProgram = new QGLShaderProgram(this);
m_pProgram->addShader(m_pVs);
m_pProgram->addShader(m_pFs);
m_pProgram->link();
// Setup texture
glActiveTexture(GL_TEXTURE0);
glGenTextures( 1, &m_textureId);
glBindTexture(GL_TEXTURE_2D, m_textureId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, glwidget()->width(), glwidget()->height(), 0, GL_RGB, GL_FLOAT,
NULL);
glBindTexture(GL_TEXTURE_2D, 0);
// Create & bind empty VAO
glGenVertexArrays(1, &m_VAO_rect);
glBindVertexArray(m_VAO_rect);
// Create VBO with (x,y,z) coordinates
float coords[] = { -1, -1, -1,
1, -1, -1,
-1, -1, 1,
1, -1, 1 };
GLuint VBO_coords;
glGenBuffers(1, &VBO_coords);
glBindBuffer(GL_ARRAY_BUFFER, VBO_coords);
glBufferData(GL_ARRAY_BUFFER, sizeof(coords), coords, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(0);
glBindVertexArray(0);
}
void Glowing::onPluginLoad()
{
// Resize to power-of-two viewport
glwidget()->resize(IMAGE_WIDTH,IMAGE_HEIGHT);
// Carregar shader, compile & link
vs = new QGLShader(QGLShader::Vertex, this);
vs->compileSourceFile(":/glowing.vert");
fs = new QGLShader(QGLShader::Fragment, this);
fs->compileSourceFile(":/glowing.frag");
program = new QGLShaderProgram(this);
program->addShader(vs);
program->addShader(fs);
program->link();
// Setup texture
glActiveTexture(GL_TEXTURE0);
glGenTextures( 1, &textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, IMAGE_WIDTH, IMAGE_HEIGHT, 0, GL_RGB, GL_FLOAT, NULL);
glBindTexture(GL_TEXTURE_2D, 0);
}
void ShowHelp::postFrame()
{
const int SIZE = 1024;
// 1. Create image with text
QImage image(SIZE,SIZE,QImage::Format_RGB32);
image.fill(Qt::white);
QPainter painter(&image);
QFont font;
font.setPixelSize(32);
painter.setFont(font);
painter.setPen(QColor(50,50,50));
int x = 15;
int y = 50;
painter.drawText(x, y, QString("L - Load object A - Add plugin"));
painter.end();
// 2. Create texture
const int textureUnit = 5;
glActiveTexture(GL_TEXTURE0+textureUnit);
QImage im0 = QGLWidget::convertToGLFormat(image);
glGenTextures( 1, &textureID);
glBindTexture(GL_TEXTURE_2D, textureID);
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, im0.width(), im0.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, im0.bits());
glGenerateMipmap(GL_TEXTURE_2D);
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT );
// Pass 2. Draw quad using texture
program->bind();
program->setUniformValue("colorMap", textureUnit);
program->setUniformValue("WIDTH", float(glwidget()->width()));
program->setUniformValue("HEIGHT", float(glwidget()->height()));
// quad covering viewport
drawRect();
program->release();
glBindTexture(GL_TEXTURE_2D, 0);
glDeleteTextures(1, &textureID);
}
void AlphaBlending::mouseMoveEvent(QMouseEvent * e)
{
glClearColor(0, 0, 0, 0);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
// Llegir posicio del cursor
int x = e->x();
int y = glwidget()->height()-e->y();
program->bind();
program->setUniformValue("mouse", QVector2D(x, y));
program->release();
}
void DrawBoundingBox::onPluginLoad()
{
// Carregar shader, compile & link
vs = new QGLShader(QGLShader::Vertex, this);
vs->compileSourceFile("draw-bounding-box.vert");
fs = new QGLShader(QGLShader::Fragment, this);
fs->compileSourceFile("draw-bounding-box.frag");
program = new QGLShaderProgram(this);
program->addShader(vs);
program->addShader(fs);
program->link();
cout << "Link log:" << program->log().toStdString() << endl;
createBuffers();
glwidget()->clearScene();
}
void AlphaBlending::onPluginLoad()
{
// Carregar shader, compile & link
vs = new QGLShader(QGLShader::Vertex, this);
vs->compileSourceFile("alphablending.vert");
fs = new QGLShader(QGLShader::Fragment, this);
fs->compileSourceFile("alphablending.frag");
program = new QGLShaderProgram(this);
program->addShader(vs);
program->addShader(fs);
program->link();
cout << "Link log:" << program->log().toStdString() << endl;
QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), glwidget(), SLOT(updateGL()));
timer->start();
}
void SeleccioTeclat::setSelectedObject(int selected) {
if (selected < 0 || selected >= (int)scene()->objects().size()) selected = -1;
scene()->setSelectedObject(selected);
glwidget()->updateGL();
}