QWaylandXCompositeEGLContext Class Reference

#include <qwaylandxcompositeeglcontext.h>

Inheritance diagram for QWaylandXCompositeEGLContext:

Public Functions
void	doneCurrent ()
	Reimplement in subclass to release current context. More...
void	geometryChanged ()
void *	getProcAddress (const QString &procName)
	Reimplement in subclass to native getProcAddr calls. More...
void	makeCurrent ()
	Reimplement in subclass to do makeCurrent on native GL context. More...
QPlatformWindowFormat	platformWindowFormat () const
	QWidget has the function qplatformWindowFormat(). More...
	QWaylandXCompositeEGLContext (QWaylandXCompositeEGLIntegration *glxIntegration, QWaylandXCompositeEGLWindow *window)
void	swapBuffers ()
	Reimplement in subclass to native swap buffers calls. More...
Public Functions inherited from QPlatformGLContext
	QPlatformGLContext ()
	All subclasses needs to specify the platformWindow. More...
virtual	~QPlatformGLContext ()
	If this is the current context for the thread, doneCurrent is called. More...

Static Private Functions
static void	sync_function (void *data)

Properties
QWaylandBuffer *	mBuffer
EGLConfig	mConfig
EGLContext	mContext
QWaylandXCompositeEGLIntegration *	mEglIntegration
EGLSurface	mEglWindowSurface
bool	mWaitingForSync
QWaylandXCompositeEGLWindow *	mWindow
Window	mXWindow

Additional Inherited Members
Static Public Functions inherited from QPlatformGLContext
static const QPlatformGLContext *	currentContext ()
	Returns the last context which called makeCurrent. More...
Protected Variables inherited from QPlatformGLContext
QScopedPointer< QPlatformGLContextPrivate >	d_ptr

Detailed Description

Definition at line 54 of file qwaylandxcompositeeglcontext.h.

Constructors and Destructors

QWaylandXCompositeEGLContext()

QWaylandXCompositeEGLContext::QWaylandXCompositeEGLContext	(	QWaylandXCompositeEGLIntegration *	glxIntegration,
		QWaylandXCompositeEGLWindow *	window
	)

Definition at line 55 of file qwaylandxcompositeeglcontext.cpp.

    : QPlatformGLContext()
    , mEglIntegration(glxIntegration)
    , mWindow(window)
    , mBuffer(0)
    , mXWindow(0)
    , mConfig(q_configFromQPlatformWindowFormat(glxIntegration->eglDisplay(),window->widget()->platformWindowFormat(),true,EGL_WINDOW_BIT))
    , mWaitingForSync(false)
{
    QVector<EGLint> eglContextAttrs;
    eglContextAttrs.append(EGL_CONTEXT_CLIENT_VERSION); eglContextAttrs.append(2);
    eglContextAttrs.append(EGL_NONE);

    mContext = eglCreateContext(glxIntegration->eglDisplay(),mConfig,EGL_NO_CONTEXT,eglContextAttrs.constData());
    if (mContext == EGL_NO_CONTEXT) {
        qFatal("failed to find context");
    }

    geometryChanged();
}

Functions

doneCurrent()

void QWaylandXCompositeEGLContext::doneCurrent ( )

virtual

Reimplement in subclass to release current context.

Typically this is calling makeCurrent with 0 "surface"

Reimplemented from QPlatformGLContext.

Definition at line 83 of file qwaylandxcompositeeglcontext.cpp.

{
    QPlatformGLContext::doneCurrent();
    eglMakeCurrent(mEglIntegration->eglDisplay(),EGL_NO_SURFACE,EGL_NO_SURFACE,EGL_NO_CONTEXT);
}

geometryChanged()

void QWaylandXCompositeEGLContext::geometryChanged

(

)

Definition at line 114 of file qwaylandxcompositeeglcontext.cpp.

Referenced by QWaylandXCompositeEGLContext(), and QWaylandXCompositeEGLWindow::setGeometry().

{
    QSize size(mWindow->geometry().size());
    if (size.isEmpty()) {
        //QGLWidget wants a context for a window without geometry
        size = QSize(1,1);
    }

    delete mBuffer;
    //XFreePixmap deletes the glxPixmap as well
    if (mXWindow) {
        XDestroyWindow(mEglIntegration->xDisplay(),mXWindow);
    }

    VisualID visualId = QXlibEglIntegration::getCompatibleVisualId(mEglIntegration->xDisplay(),mEglIntegration->eglDisplay(),mConfig);

    XVisualInfo visualInfoTemplate;
    memset(&visualInfoTemplate, 0, sizeof(XVisualInfo));
    visualInfoTemplate.visualid = visualId;

    int matchingCount = 0;
    XVisualInfo *visualInfo = XGetVisualInfo(mEglIntegration->xDisplay(), VisualIDMask, &visualInfoTemplate, &matchingCount);

    Colormap cmap = XCreateColormap(mEglIntegration->xDisplay(),mEglIntegration->rootWindow(),visualInfo->visual,AllocNone);

    XSetWindowAttributes a;
    a.colormap = cmap;
    mXWindow = XCreateWindow(mEglIntegration->xDisplay(), mEglIntegration->rootWindow(),0, 0, size.width(), size.height(),
                             0, visualInfo->depth, InputOutput, visualInfo->visual,
                             CWColormap, &a);

    XCompositeRedirectWindow(mEglIntegration->xDisplay(), mXWindow, CompositeRedirectManual);
    XMapWindow(mEglIntegration->xDisplay(), mXWindow);

    mEglWindowSurface = eglCreateWindowSurface(mEglIntegration->eglDisplay(),mConfig,mXWindow,0);
    if (mEglWindowSurface == EGL_NO_SURFACE) {
        qFatal("Could not make eglsurface");
    }

    XSync(mEglIntegration->xDisplay(),False);
    mBuffer = new QWaylandXCompositeBuffer(mEglIntegration->waylandXComposite(),
                                           (uint32_t)mXWindow,
                                           size,
                                           mEglIntegration->waylandDisplay()->argbVisual());
    mWindow->attach(mBuffer);
    wl_display_sync_callback(mEglIntegration->waylandDisplay()->wl_display(),
                             QWaylandXCompositeEGLContext::sync_function,
                             this);

    mWaitingForSync = true;
    wl_display_sync(mEglIntegration->waylandDisplay()->wl_display(),0);
    mEglIntegration->waylandDisplay()->flushRequests();
    while (mWaitingForSync) {
        mEglIntegration->waylandDisplay()->readEvents();
    }
}

getProcAddress()

void * QWaylandXCompositeEGLContext::getProcAddress ( const QString &  procName )

virtual

Reimplement in subclass to native getProcAddr calls.

Note: its convenient to use qPrintable(const QString &str) to get the const char * pointer

Implements QPlatformGLContext.

Definition at line 98 of file qwaylandxcompositeeglcontext.cpp.

{
    return (void *)eglGetProcAddress(qPrintable(procName));
}

makeCurrent()

void QWaylandXCompositeEGLContext::makeCurrent ( )

virtual

Reimplement in subclass to do makeCurrent on native GL context.

Reimplemented from QPlatformGLContext.

Definition at line 76 of file qwaylandxcompositeeglcontext.cpp.

{
    QPlatformGLContext::makeCurrent();

    eglMakeCurrent(mEglIntegration->eglDisplay(),mEglWindowSurface,mEglWindowSurface,mContext);
}

platformWindowFormat()

QPlatformWindowFormat QWaylandXCompositeEGLContext::platformWindowFormat ( ) const

virtual

QWidget has the function qplatformWindowFormat().

That function is for the application programmer to request the format of the window and the context that he wants.

Reimplement this function in a subclass to indicate what format the glContext actually has.

Implements QPlatformGLContext.

Definition at line 103 of file qwaylandxcompositeeglcontext.cpp.

{
    return qt_qPlatformWindowFormatFromConfig(mEglIntegration->eglDisplay(),mConfig);
}

swapBuffers()

void QWaylandXCompositeEGLContext::swapBuffers ( )

virtual

Reimplement in subclass to native swap buffers calls.

Implements QPlatformGLContext.

Definition at line 89 of file qwaylandxcompositeeglcontext.cpp.

{
    QSize size = mWindow->geometry().size();

    eglSwapBuffers(mEglIntegration->eglDisplay(),mEglWindowSurface);
    mWindow->damage(QRect(QPoint(0,0),size));
    mWindow->waitForFrameSync();
}

sync_function()

void QWaylandXCompositeEGLContext::sync_function ( void *  data )

staticprivate

Definition at line 108 of file qwaylandxcompositeeglcontext.cpp.

Referenced by geometryChanged().

{
    QWaylandXCompositeEGLContext *that = static_cast<QWaylandXCompositeEGLContext *>(data);
    that->mWaitingForSync = false;
}

Properties

mBuffer

QWaylandBuffer* QWaylandXCompositeEGLContext::mBuffer

private

Definition at line 71 of file qwaylandxcompositeeglcontext.h.

Referenced by geometryChanged().

mConfig

EGLConfig QWaylandXCompositeEGLContext::mConfig

private

Definition at line 74 of file qwaylandxcompositeeglcontext.h.

Referenced by geometryChanged(), platformWindowFormat(), and QWaylandXCompositeEGLContext().

mContext

EGLContext QWaylandXCompositeEGLContext::mContext

private

Definition at line 75 of file qwaylandxcompositeeglcontext.h.

Referenced by makeCurrent(), and QWaylandXCompositeEGLContext().

mEglIntegration

QWaylandXCompositeEGLIntegration* QWaylandXCompositeEGLContext::mEglIntegration

private

Definition at line 69 of file qwaylandxcompositeeglcontext.h.

Referenced by doneCurrent(), geometryChanged(), makeCurrent(), platformWindowFormat(), and swapBuffers().

mEglWindowSurface

EGLSurface QWaylandXCompositeEGLContext::mEglWindowSurface

private

Definition at line 76 of file qwaylandxcompositeeglcontext.h.

Referenced by geometryChanged(), makeCurrent(), and swapBuffers().

mWaitingForSync

bool QWaylandXCompositeEGLContext::mWaitingForSync

private

Definition at line 79 of file qwaylandxcompositeeglcontext.h.

Referenced by geometryChanged(), and sync_function().

mWindow

QWaylandXCompositeEGLWindow* QWaylandXCompositeEGLContext::mWindow

private

Definition at line 70 of file qwaylandxcompositeeglcontext.h.

Referenced by geometryChanged(), and swapBuffers().

mXWindow

Window QWaylandXCompositeEGLContext::mXWindow

private

Definition at line 73 of file qwaylandxcompositeeglcontext.h.

Referenced by geometryChanged().

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The documentation for this class was generated from the following files:

• /src/plugins/platforms/wayland/gl_integration/xcomposite_egl/qwaylandxcompositeeglcontext.h
• /src/plugins/platforms/wayland/gl_integration/xcomposite_egl/qwaylandxcompositeeglcontext.cpp