How to share texture object with mutil qglwidget

[feiz]

Hello,
I am developing a application,i need some qglwidgets share a volume 3d texture.I know

QGLWidget::QGLWidget(QWidget * parent = 0, const QGLWidget * shareWidget = 0, Qt::WindowFlags f = 0)

QGLWidget::QGLWidget(QWidget * parent = 0, const QGLWidget * shareWidget = 0, Qt::WindowFlags f = 0)

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can share texture between two qglwidget(Qglwidget share with shareWidget).Is
tere a way to share texture with multi qglwidget?

Thanks,

[pixaeiro]

Yes, in OpenGL you can share textures between displays that have the same context.

So, you can create a new gl context, and then create your two widgets with that context:

QGLContext(const QGLFormat & format);
QGLWidget(QGLContext * context, QWidget * parent = 0, const QGLWidget * shareWidget = 0, Qt::WindowFlags f = 0)

https://www.opengl.org/discussion_bo...hare-a-texture

[feiz]

yes,I know use QGLContext maybe solve my problem.But I don't understand QGlContext.Is there a example to use QGLContext ?Thanks

[feiz]

Yes, in OpenGL you can share textures between displays that have the same context.

So, you can create a new gl context, and then create your two widgets with that context:

QGLContext(const QGLFormat & format);
QGLWidget(QGLContext * context, QWidget * parent = 0, const QGLWidget * shareWidget = 0, Qt::WindowFlags f = 0)

https://www.opengl.org/discussion_bo...hare-a-texture

I have a try like this

cx_ = new QGLContext(QGLFormat::defaultFormat());
	cx_->create();
 
	slicerX_ = new slicerCanvas(cx_,this);
 
	cx_ = slicerX_->context();
 
	secWid_ = new secCan(cx_,this,slicerX_);
 
	thrWid_ = new triCan(cx_,this,slicerX_);

cx_ = new QGLContext(QGLFormat::defaultFormat());
	cx_->create();
	
	slicerX_ = new slicerCanvas(cx_,this);

	cx_ = slicerX_->context();
	
	secWid_ = new secCan(cx_,this,slicerX_);
		
	thrWid_ = new triCan(cx_,this,slicerX_);

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but it don't render correct.I saw a question in
http://stackoverflow.com/questions/2...t-or-data?rq=1 ,
any one can give me some advice? thanks
,