An EGL context implementation. More...

#include <qeglplatformcontext_p.h>

Inheritance diagram for QEGLPlatformContext:

Collaboration diagram for QEGLPlatformContext:

Public Types
enum	Flag { NoSurfaceless = 0x01 }

Public Member Functions
	QEGLPlatformContext (const QSurfaceFormat &formatformat, QPlatformOpenGLContext share, EGLDisplay displaydisplay, EGLConfig configconfig=nullptr, Flags flagsflags={ })
	~QEGLPlatformContext ()
void	initialize () override
	Called after a new instance is constructed.
bool	makeCurrent (QPlatformSurface *surface) override
void	doneCurrent () override
void	swapBuffers (QPlatformSurface *surface) override
	Reimplement in subclass to native swap buffers calls.
QFunctionPointer	getProcAddress (const char *procName) override
	Reimplement in subclass to allow dynamic querying of OpenGL symbols.
QSurfaceFormat	format () const override
bool	isSharing () const override
bool	isValid () const override
EGLContext	nativeContext () const override
EGLConfig	config () const override
EGLDisplay	display () const override
virtual void	invalidateContext () override
EGLContext	eglContext () const
EGLDisplay	eglDisplay () const
EGLConfig	eglConfig () const
Public Member Functions inherited from QPlatformOpenGLContext
	QPlatformOpenGLContext ()
virtual	~QPlatformOpenGLContext ()
virtual GLuint	defaultFramebufferObject (QPlatformSurface *surface) const
	Reimplement in subclass if your platform uses framebuffer objects for surfaces.
virtual void	beginFrame ()
	Called when the RHI begins rendering a new frame in the context.
virtual void	endFrame ()
	Called when the RHI ends rendering a in the context.
QOpenGLContext *	context () const

Static Public Member Functions
template<typename T>
static QOpenGLContext *	createFrom (EGLContext context, EGLDisplay contextDisplay, EGLDisplay platformDisplay, QOpenGLContext *shareContext)
Static Public Member Functions inherited from QPlatformOpenGLContext
static bool	parseOpenGLVersion (const QByteArray &versionString, int &major, int &minor)

Protected Member Functions
	QEGLPlatformContext ()
virtual EGLSurface	eglSurfaceForPlatformSurface (QPlatformSurface *surface)=0
virtual EGLSurface	createTemporaryOffscreenSurface ()
virtual void	destroyTemporaryOffscreenSurface (EGLSurface surface)
virtual void	runGLChecks ()
bool	checkGraphicsReset ()

Detailed Description

An EGL context implementation.

Since: 5.2

Implement QPlatformOpenGLContext using EGL. To use it in platform plugins a subclass must be created since eglSurfaceForPlatformSurface() has to be reimplemented. This function is used for mapping platform surfaces (windows) to EGL surfaces and is necessary since different platform plugins may have different ways of handling native windows (for example, a plugin may choose not to back every platform window by a real EGL surface). Other than that, no further customization is necessary.

Definition at line 27 of file qeglplatformcontext_p.h.

Member Enumeration Documentation

◆ Flag

enum QEGLPlatformContext::Flag

Enumerator
NoSurfaceless

Definition at line 31 of file qeglplatformcontext_p.h.

Constructor & Destructor Documentation

◆ QEGLPlatformContext() [1/2]

QEGLPlatformContext::QEGLPlatformContext	(	const QSurfaceFormat &	format,
		QPlatformOpenGLContext *	share,
		EGLDisplay	display,
		EGLConfig *	config = nullptr,
		Flags	flags = { } )

Definition at line 120 of file qeglplatformcontext.cpp.

◆ ~QEGLPlatformContext()

QEGLPlatformContext::~QEGLPlatformContext ( )

Definition at line 560 of file qeglplatformcontext.cpp.

◆ QEGLPlatformContext() [2/2]

QEGLPlatformContext::QEGLPlatformContext ( )

inlineprotected

Definition at line 85 of file qeglplatformcontext_p.h.

Member Function Documentation

◆ checkGraphicsReset()

bool QEGLPlatformContext::checkGraphicsReset ( )

protected

Definition at line 1010 of file qeglplatformcontext.cpp.

◆ config()

EGLConfig QEGLPlatformContext::config ( ) const

inlineoverride

Definition at line 75 of file qeglplatformcontext_p.h.

◆ createFrom()

template<typename T>

QOpenGLContext * QEGLPlatformContext::createFrom	(	EGLContext	context,
		EGLDisplay	contextDisplay,
		EGLDisplay	platformDisplay,
		QOpenGLContext *	shareContext )

inlinestatic

Definition at line 40 of file qeglplatformcontext_p.h.

◆ createTemporaryOffscreenSurface()

EGLSurface QEGLPlatformContext::createTemporaryOffscreenSurface ( )

protectedvirtual

Reimplemented in QEglFSContext, and QtWaylandClient::QWaylandGLContext.

Definition at line 322 of file qeglplatformcontext.cpp.

◆ destroyTemporaryOffscreenSurface()

void QEGLPlatformContext::destroyTemporaryOffscreenSurface ( EGLSurface surface )

protectedvirtual

Reimplemented in QEglFSContext, and QtWaylandClient::QWaylandGLContext.

Definition at line 340 of file qeglplatformcontext.cpp.

◆ display()

EGLDisplay QEGLPlatformContext::display ( ) const

inlineoverride

Definition at line 76 of file qeglplatformcontext_p.h.

◆ doneCurrent()

void QEGLPlatformContext::doneCurrent ( )

overridevirtual

Implements QPlatformOpenGLContext.

Reimplemented in QQnxGLContext, QtWaylandClient::QWaylandGLContext, and QXcbEglContext.

Definition at line 568 of file qeglplatformcontext.cpp.

◆ eglConfig()

EGLConfig QEGLPlatformContext::eglConfig ( ) const

Definition at line 1005 of file qeglplatformcontext.cpp.

◆ eglContext()

EGLContext QEGLPlatformContext::eglContext ( ) const

Definition at line 995 of file qeglplatformcontext.cpp.

◆ eglDisplay()

EGLDisplay QEGLPlatformContext::eglDisplay ( ) const

Definition at line 1000 of file qeglplatformcontext.cpp.

◆ eglSurfaceForPlatformSurface()

virtual EGLSurface QEGLPlatformContext::eglSurfaceForPlatformSurface ( QPlatformSurface * surface )

protectedpure virtual

Implemented in QAndroidPlatformOpenGLContext, QDirectFbEGLContext, QDirectFbEGLContext, QEglFSContext, QMinimalEglContext, QMinimalEglContext, QOhosEGLPlatformContext, QQnxGLContext, QtWaylandClient::QWaylandGLContext, and QXcbEglContext.

◆ format()

QSurfaceFormat QEGLPlatformContext::format ( ) const

overridevirtual

Implements QPlatformOpenGLContext.

Definition at line 990 of file qeglplatformcontext.cpp.

◆ getProcAddress()

QFunctionPointer QEGLPlatformContext::getProcAddress ( const char * procName )

overridevirtual

Reimplement in subclass to allow dynamic querying of OpenGL symbols.

As opposed to e.g. the wglGetProcAddress function on Windows, Qt expects this methods to be able to return valid function pointers even for standard OpenGL symbols.

Implements QPlatformOpenGLContext.

Definition at line 587 of file qeglplatformcontext.cpp.

◆ initialize()

void QEGLPlatformContext::initialize ( )

overridevirtual

Called after a new instance is constructed.

The default implementation does nothing.

Subclasses can use this function to perform additional initialization that relies on virtual functions.

Reimplemented from QPlatformOpenGLContext.

Definition at line 314 of file qeglplatformcontext.cpp.

◆ invalidateContext()

virtual void QEGLPlatformContext::invalidateContext ( )

inlineoverridevirtual

Definition at line 78 of file qeglplatformcontext_p.h.

◆ isSharing()

bool QEGLPlatformContext::isSharing ( ) const

inlineoverridevirtual

Reimplemented from QPlatformOpenGLContext.

Definition at line 71 of file qeglplatformcontext_p.h.

◆ isValid()

bool QEGLPlatformContext::isValid ( ) const

inlineoverridevirtual

Reimplemented from QPlatformOpenGLContext.

Definition at line 72 of file qeglplatformcontext_p.h.

◆ makeCurrent()

bool QEGLPlatformContext::makeCurrent ( QPlatformSurface * surface )

overridevirtual

Implements QPlatformOpenGLContext.

Reimplemented in QQnxGLContext, QtWaylandClient::QWaylandGLContext, and QXcbEglContext.

Definition at line 499 of file qeglplatformcontext.cpp.

◆ nativeContext()

EGLContext QEGLPlatformContext::nativeContext ( ) const

inlineoverride

Definition at line 74 of file qeglplatformcontext_p.h.

◆ runGLChecks()

void QEGLPlatformContext::runGLChecks ( )

protectedvirtual

Reimplemented in QEglFSContext, and QtWaylandClient::QWaylandGLContext.

Definition at line 345 of file qeglplatformcontext.cpp.

◆ swapBuffers()

void QEGLPlatformContext::swapBuffers ( QPlatformSurface * surface )

overridevirtual

Reimplement in subclass to native swap buffers calls.

The implementation must support being called in a thread different than the gui-thread.

Implements QPlatformOpenGLContext.

Reimplemented in QOhosEGLPlatformContext, QQnxGLContext, QtWaylandClient::QWaylandGLContext, and QXcbEglContext.

Definition at line 576 of file qeglplatformcontext.cpp.

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

qtbase/src/gui/opengl/platform/egl/qeglplatformcontext_p.h (28c41d8cf6c2e70ab62c2d4600dd61f20510c97a)
qtbase/src/gui/opengl/platform/egl/qeglplatformcontext.cpp (e5b8c68e1042d66e702cfc19a7b1c2c59055f61c)

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Detailed Description

Member Enumeration Documentation

◆ Flag

Constructor & Destructor Documentation

◆ QEGLPlatformContext() [1/2]

◆ ~QEGLPlatformContext()

◆ QEGLPlatformContext() [2/2]

Member Function Documentation

◆ checkGraphicsReset()

◆ config()

◆ createFrom()

◆ createTemporaryOffscreenSurface()

◆ destroyTemporaryOffscreenSurface()

◆ display()

◆ doneCurrent()

◆ eglConfig()

◆ eglContext()

◆ eglDisplay()

◆ eglSurfaceForPlatformSurface()

◆ format()

◆ getProcAddress()

◆ initialize()

◆ invalidateContext()

◆ isSharing()

◆ isValid()

◆ makeCurrent()

◆ nativeContext()

◆ runGLChecks()

◆ swapBuffers()