[SOLVED] QImage and glTexImage2D()

[Seraph]

Hi there,

I am using Qt 5 and want to know what the current approach to use glTexImage2D() with QImage or QPixmap is. I used to do it like this:

@QImage tmpImage("someTex.jpg");
QImage image = QGLWidget::convertToGLFormat(tmpImage);

glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image.width(), image.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, image.bits());@

Since QGLWidget is or will be deprecated (i at least do believe so), i want to get rid of this approach.
I also do not want to use QOpenGLTexture because the software i am writing is for learning OpenGL.

Thanks in advance.
Happy new year!

[agocs]

Starting with Qt 5.2 you can use image.convertToFormat(QImage::Format_RGBA8888) instead.

[ZapB]

Also, deprecated does not mean that QGLWidget will go away. Also look at the implementation of QOpenGLTexture and it's helpers to see what it does.

[Seraph]

OK thanks,

It can also be done like this:
@
QImage tmpImage("someTex.jpg");
QImage image = tmpImage.mirrored();

glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image.width(), image.height(), 0, GL_BGRA, GL_UNSIGNED_BYTE, image.bits());
@