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Spice up QOpenGLWindow example

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By drawing the same gradient for the triangle as in the rasterwindow example.
We also set a default geometry and show the window without forcing it to become
maximized.

Change-Id: I05f9138d08f9c5d3e30eec362a3a1cd63d72753e
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
This commit is contained in:
Tor Arne Vestbø 2018-05-31 11:38:33 +02:00
parent d760f39d5c
commit 384e72bdb3
1 changed files with 5 additions and 10 deletions
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15
examples/opengl/qopenglwindow/main.cpp
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@ -92,7 +92,6 @@ private:
QMatrix4x4 m_view;
QMatrix4x4 m_model_triangle;
QMatrix4x4 m_model_text;
QBrush m_brush;
FragmentToy m_fragment_toy;
QStaticText m_text_layout;
@ -111,16 +110,12 @@ OpenGLWindow::OpenGLWindow()
, m_text_layout("The triangle and this text is rendered with QPainter")
, m_animate(true)
{
setGeometry(300, 300, 500, 500);
m_view.lookAt(QVector3D(3,1,1),
QVector3D(0,0,0),
QVector3D(0,1,0));
QLinearGradient gradient(QPointF(-1,-1), QPointF(1,1));
gradient.setColorAt(0, Qt::red);
gradient.setColorAt(1, Qt::green);
m_brush = QBrush(gradient);
setAnimating(m_animate);
}
@ -134,11 +129,11 @@ void OpenGLWindow::paintGL()
QMatrix4x4 mvp = m_projection * m_view * m_model_triangle;
p.setTransform(mvp.toTransform(), true);
p.fillPath(painterPathForTriangle(), m_brush);
p.fillPath(painterPathForTriangle(), QBrush(QGradient(QGradient::NightFade)));
QTransform text_transform = (m_window_painter_matrix * m_view * m_model_text).toTransform();
p.setTransform(text_transform, false);
p.setPen(QPen(Qt::white));
p.setPen(QPen(Qt::black));
m_text_layout.prepare(text_transform);
qreal x = - (m_text_layout.size().width() / 2);
qreal y = 0;
@ -197,7 +192,7 @@ int main(int argc, char **argv)
fmt.setDepthBufferSize(24);
fmt.setStencilBufferSize(8);
window.setFormat(fmt);
window.showMaximized();
window.show();
return app.exec();
}