Re: [SailfishDevel] OpenGL Under Selica QML
Hi David,
The example that I use is also QQuickItem derived.
Indeed I'll take your method for placement and resizing.
Also necessary for landscape/portrait changes.
thanks.
r
wim
On 01/23/2014 10:38 AM, David Greaves wrote:
On 23/01/14 09:28, Wim de Vries wrote:
On 01/22/2014 05:34 PM, David Greaves wrote:
Fantastic - I just verified that it works here too.
How are you getting the GL into the QML scene?
From one of the GL examples (Squircle in c++):
glViewport() determining the position (not yet QML) in Page.
main c++:
qmlRegisterTypeSquircle(OpenGLUnderQML, 1, 0, Squircle);
QML:
import OpenGLUnderQML 1.0
Squircle {
SequentialAnimation on t {
NumberAnimation { to: 1; duration: 2500; easing.type: Easing.InQuad }
NumberAnimation { to: 0; duration: 2500; easing.type: Easing.OutQuad }
loops: Animation.Infinite
running: true
}
Yep - I started there too :)
I created a GLItem which allows property connections and sizing so I know where
to draw in the window. I then inherit from this item and render into the
viewport it sets up.
I will have a look at to.
This is how I map the viewport to the Item location:
class GLItem : public QQuickItem, protected QOpenGLFunctions
...
void GLItem::paint()
{
if (!m_program) {
m_program = new QOpenGLShaderProgram();
connect(window()-openglContext(), SIGNAL(aboutToBeDestroyed()),
this, SLOT(cleanup()), Qt::DirectConnection);
initializeOpenGLFunctions();
this-prep(); // Do any one-off setup that needs the glcontext to be
setup (eg the shader loading)
}
QRectF vpr = mapRectToScene(QRectF(0.0,0.0,width(),height()));
glViewport( vpr.x(), (window()-height() -( vpr.y() + vpr.height())),
vpr.width(), vpr.height());
...
David
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Re: [SailfishDevel] OpenGL Under Selica QML
On 01/22/2014 05:34 PM, David Greaves wrote:
Fantastic - I just verified that it works here too.
How are you getting the GL into the QML scene?
From one of the GL examples (Squircle in c++):
glViewport() determining the position (not yet QML) in Page.
main c++:
qmlRegisterTypeSquircle(OpenGLUnderQML, 1, 0, Squircle);
QML:
import OpenGLUnderQML 1.0
Squircle {
SequentialAnimation on t {
NumberAnimation { to: 1; duration: 2500; easing.type:
Easing.InQuad }
NumberAnimation { to: 0; duration: 2500; easing.type:
Easing.OutQuad }
loops: Animation.Infinite
running: true
}
I created a GLItem which allows property connections and sizing so I know where
to draw in the window. I then inherit from this item and render into the
viewport it sets up.
I will have a look at to.
Thanks.
r
wim
David
On 22/01/14 14:30, wsvries wrote:
I got it working!
ApplicationWindow
{
_backgroundVisible : false
...
}
This way the ApplicationWindow (background) doesn't overpaint the OpenGL.
Silica items now nicely and transparantly overlap the OpenGL.
r
wim
wsvries schreef op 2014-01-22 14:50:
Thanks,
I'll stick to standard QML then.
r
wim
David Greaves schreef op 2014-01-22 12:04:
On 22/01/14 10:59, David Greaves wrote:
The other option is to render to an FBO and then assign that to a QML item
http://qt-project.org/doc/qt-5/qtquick-visualcanvas-scenegraph.html#mixing-scene-graph-and-opengl
AFAIUI it's slightly lower performance but it does give you total control over
layering your GLES window into your QML.
and
http://qt-project.org/doc/qt-5/qtquick-scenegraph-textureinthread-example.html
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Re: [SailfishDevel] OpenGL Under Selica QML
On 23/01/14 09:28, Wim de Vries wrote:
On 01/22/2014 05:34 PM, David Greaves wrote:
Fantastic - I just verified that it works here too.
How are you getting the GL into the QML scene?
From one of the GL examples (Squircle in c++):
glViewport() determining the position (not yet QML) in Page.
main c++:
qmlRegisterTypeSquircle(OpenGLUnderQML, 1, 0, Squircle);
QML:
import OpenGLUnderQML 1.0
Squircle {
SequentialAnimation on t {
NumberAnimation { to: 1; duration: 2500; easing.type: Easing.InQuad }
NumberAnimation { to: 0; duration: 2500; easing.type: Easing.OutQuad }
loops: Animation.Infinite
running: true
}
Yep - I started there too :)
I created a GLItem which allows property connections and sizing so I know
where
to draw in the window. I then inherit from this item and render into the
viewport it sets up.
I will have a look at to.
This is how I map the viewport to the Item location:
class GLItem : public QQuickItem, protected QOpenGLFunctions
...
void GLItem::paint()
{
if (!m_program) {
m_program = new QOpenGLShaderProgram();
connect(window()-openglContext(), SIGNAL(aboutToBeDestroyed()),
this, SLOT(cleanup()), Qt::DirectConnection);
initializeOpenGLFunctions();
this-prep(); // Do any one-off setup that needs the glcontext to be
setup (eg the shader loading)
}
QRectF vpr = mapRectToScene(QRectF(0.0,0.0,width(),height()));
glViewport( vpr.x(), (window()-height() -( vpr.y() + vpr.height())),
vpr.width(), vpr.height());
...
David
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[SailfishDevel] OpenGL Under Selica QML
Hi, Some time ago Thomas Perl was so kind to supply us with an example 'OpenGL Over QML'. It uses the afterRendering() signal. I am trying to use the beforeRendering() signal (including setClearBeforeRendering(false)), but I get no OpenGL output. It works with standard (non-Selica) QML. I have the strong feeling that this is impossible because the ApplicationWindow, Page or other Silica items do paint the whole screen, overwriting the OpenGL area. Am I right? If yes, is there a way to get around it? Basically I want the (Silica) QML painted (partly transparent) over the OpenGL. Thanks. r wim ___ SailfishOS.org Devel mailing list
Re: [SailfishDevel] OpenGL Under Selica QML
On 22/01/14 08:37, Wim de Vries wrote: Hi, Some time ago Thomas Perl was so kind to supply us with an example 'OpenGL Over QML'. It uses the afterRendering() signal. I am trying to use the beforeRendering() signal (including setClearBeforeRendering(false)), but I get no OpenGL output. It works with standard (non-Selica) QML. I have the strong feeling that this is impossible because the ApplicationWindow, Page or other Silica items do paint the whole screen, overwriting the OpenGL area. Am I right? Yes If yes, is there a way to get around it? No Basically I want the (Silica) QML painted (partly transparent) over the OpenGL. Thanks. The other option is to render to an FBO and then assign that to a QML item http://qt-project.org/doc/qt-5/qtquick-visualcanvas-scenegraph.html#mixing-scene-graph-and-opengl AFAIUI it's slightly lower performance but it does give you total control over layering your GLES window into your QML. David ___ SailfishOS.org Devel mailing list
Re: [SailfishDevel] OpenGL Under Selica QML
Thanks, I'll stick to standard QML then. r wim David Greaves schreef op 2014-01-22 12:04: On 22/01/14 10:59, David Greaves wrote: The other option is to render to an FBO and then assign that to a QML item http://qt-project.org/doc/qt-5/qtquick-visualcanvas-scenegraph.html#mixing-scene-graph-and-opengl AFAIUI it's slightly lower performance but it does give you total control over layering your GLES window into your QML. and http://qt-project.org/doc/qt-5/qtquick-scenegraph-textureinthread-example.html ___ SailfishOS.org Devel mailing list ___ SailfishOS.org Devel mailing list
Re: [SailfishDevel] OpenGL Under Selica QML
I got it working!
ApplicationWindow
{
_backgroundVisible : false
...
}
This way the ApplicationWindow (background) doesn't overpaint the
OpenGL.
Silica items now nicely and transparantly overlap the OpenGL.
r
wim
wsvries schreef op 2014-01-22 14:50:
Thanks,
I'll stick to standard QML then.
r
wim
David Greaves schreef op 2014-01-22 12:04:
On 22/01/14 10:59, David Greaves wrote:
The other option is to render to an FBO and then assign that to a QML
item
http://qt-project.org/doc/qt-5/qtquick-visualcanvas-scenegraph.html#mixing-scene-graph-and-opengl
AFAIUI it's slightly lower performance but it does give you total
control over
layering your GLES window into your QML.
and
http://qt-project.org/doc/qt-5/qtquick-scenegraph-textureinthread-example.html
___
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___
SailfishOS.org Devel mailing list
___
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Re: [SailfishDevel] OpenGL Under Selica QML
Fantastic - I just verified that it works here too.
How are you getting the GL into the QML scene?
I created a GLItem which allows property connections and sizing so I know where
to draw in the window. I then inherit from this item and render into the
viewport it sets up.
David
On 22/01/14 14:30, wsvries wrote:
I got it working!
ApplicationWindow
{
_backgroundVisible : false
...
}
This way the ApplicationWindow (background) doesn't overpaint the OpenGL.
Silica items now nicely and transparantly overlap the OpenGL.
r
wim
wsvries schreef op 2014-01-22 14:50:
Thanks,
I'll stick to standard QML then.
r
wim
David Greaves schreef op 2014-01-22 12:04:
On 22/01/14 10:59, David Greaves wrote:
The other option is to render to an FBO and then assign that to a QML item
http://qt-project.org/doc/qt-5/qtquick-visualcanvas-scenegraph.html#mixing-scene-graph-and-opengl
AFAIUI it's slightly lower performance but it does give you total control
over
layering your GLES window into your QML.
and
http://qt-project.org/doc/qt-5/qtquick-scenegraph-textureinthread-example.html
___
SailfishOS.org Devel mailing list
___
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