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 &format, QPlatformOpenGLContext share, EGLDisplay display, EGLConfig config=nullptr, Flags flags={ })

	~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 ()

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 80 of file qeglplatformcontext.cpp.

References config(), QSurfaceFormat::CoreProfile, QSurfaceFormat::DebugContext, QSurfaceFormat::DeprecatedFunctions, EGL_CONTEXT_FLAGS_KHR, EGL_CONTEXT_MINOR_VERSION_KHR, EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR, EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR, EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR, EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR, EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR, i, QSurfaceFormat::OpenGL, QSurfaceFormat::OpenVG, QSurfaceFormat::ProtectedContent, q_configFromGLFormat(), q_glFormatFromConfig(), q_hasEglExtension(), q_printEglConfig(), qDebug, qEnvironmentVariableIntValue(), qWarning, QSurfaceFormat::renderableType(), and QSurfaceFormat::setOption().

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◆ ~QEGLPlatformContext()

QEGLPlatformContext::~QEGLPlatformContext ( )

Definition at line 388 of file qeglplatformcontext.cpp.

◆ QEGLPlatformContext() [2/2]

QEGLPlatformContext::QEGLPlatformContext ( )

inlineprotected

Definition at line 85 of file qeglplatformcontext_p.h.

Member Function Documentation

◆ config()

EGLConfig QEGLPlatformContext::config ( ) const

inlineoverride

Definition at line 75 of file qeglplatformcontext_p.h.

Referenced by QEGLPlatformContext().

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◆ createFrom()

template<typename T >

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

inlinestatic

Definition at line 40 of file qeglplatformcontext_p.h.

References context, QOpenGLContextPrivate::get(), QOpenGLContext::handle(), and qWarning.

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◆ createTemporaryOffscreenSurface()

EGLSurface QEGLPlatformContext::createTemporaryOffscreenSurface ( )

protectedvirtual

Reimplemented in QEglFSContext, and QtWaylandClient::QWaylandGLContext.

Definition at line 241 of file qeglplatformcontext.cpp.

References q_configFromGLFormat().

Referenced by QEglFSContext::createTemporaryOffscreenSurface().

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◆ destroyTemporaryOffscreenSurface()

void QEGLPlatformContext::destroyTemporaryOffscreenSurface ( EGLSurface surface )

protectedvirtual

Reimplemented in QEglFSContext, and QtWaylandClient::QWaylandGLContext.

Definition at line 259 of file qeglplatformcontext.cpp.

Referenced by QEglFSContext::destroyTemporaryOffscreenSurface().

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◆ 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, QXcbEglContext, and QtWaylandClient::QWaylandGLContext.

Definition at line 396 of file qeglplatformcontext.cpp.

References ok, and qWarning.

Referenced by QQnxGLContext::doneCurrent(), and QXcbEglContext::doneCurrent().

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◆ eglConfig()

EGLConfig QEGLPlatformContext::eglConfig ( ) const

Definition at line 833 of file qeglplatformcontext.cpp.

Referenced by QtWaylandClient::QWaylandGLContext::QWaylandGLContext(), QtWaylandClient::QWaylandGLContext::createTemporaryOffscreenSurface(), QAndroidPlatformOpenGLContext::eglSurfaceForPlatformSurface(), and QAndroidPlatformOpenGLContext::swapBuffers().

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◆ eglContext()

EGLContext QEGLPlatformContext::eglContext ( ) const

Definition at line 823 of file qeglplatformcontext.cpp.

Referenced by QtWaylandClient::QWaylandGLContext::QWaylandGLContext(), eglContextForContext(), and QtWaylandClient::QWaylandGLContext::makeCurrent().

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◆ eglDisplay()

EGLDisplay QEGLPlatformContext::eglDisplay ( ) const

Definition at line 828 of file qeglplatformcontext.cpp.

Referenced by QtWaylandClient::QWaylandGLContext::QWaylandGLContext(), QtWaylandClient::QWaylandGLContext::~QWaylandGLContext(), QEglFSContext::createTemporaryOffscreenSurface(), QtWaylandClient::QWaylandGLContext::createTemporaryOffscreenSurface(), QEglFSContext::destroyTemporaryOffscreenSurface(), QtWaylandClient::QWaylandGLContext::destroyTemporaryOffscreenSurface(), QtWaylandClient::QWaylandGLContext::doneCurrent(), makeCurrent(), QtWaylandClient::QWaylandGLContext::makeCurrent(), and QtWaylandClient::QWaylandGLContext::swapBuffers().

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◆ eglSurfaceForPlatformSurface()

virtual EGLSurface QEGLPlatformContext::eglSurfaceForPlatformSurface ( QPlatformSurface * surface )

protectedpure virtual

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

Referenced by makeCurrent(), and swapBuffers().

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◆ format()

QSurfaceFormat QEGLPlatformContext::format ( ) const

overridevirtual

Implements QPlatformOpenGLContext.

Definition at line 818 of file qeglplatformcontext.cpp.

Referenced by QtWaylandClient::QWaylandGLContext::QWaylandGLContext(), QEglFSContext::createTemporaryOffscreenSurface(), and QtWaylandClient::QWaylandGLContext::swapBuffers().

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◆ 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.

Reimplemented in QtWaylandClient::QWaylandGLContext.

Definition at line 415 of file qeglplatformcontext.cpp.

References i, and qstrcmp().

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