Open GL context. More...

#include <qwindowsglcontext.h>

Inheritance diagram for QWindowsGLContext:

Collaboration diagram for QWindowsGLContext:

Public Types
typedef void(*	GL_Proc) ()

Public Member Functions
	QWindowsGLContext (QOpenGLStaticContext staticContext, QOpenGLContext context)

	QWindowsGLContext (QOpenGLStaticContext *staticContext, HGLRC context, HWND window)

	~QWindowsGLContext () override

bool	isSharing () const override

bool	isValid () const override

QSurfaceFormat	format () const override

void	swapBuffers (QPlatformSurface *surface) override
	Reimplement in subclass to native swap buffers calls.

bool	makeCurrent (QPlatformSurface *surface) override

void	doneCurrent () override

QFunctionPointer	getProcAddress (const char *procName) override
	Reimplement in subclass to allow dynamic querying of OpenGL symbols.

HGLRC	renderingContext () const

HGLRC	nativeContext () const override

Public Member Functions inherited from QWindowsOpenGLContext
virtual void *	nativeDisplay () const

virtual void *	nativeConfig () const

Public Member Functions inherited from QPlatformOpenGLContext
	QPlatformOpenGLContext ()

virtual	~QPlatformOpenGLContext ()

virtual void	initialize ()
	Called after a new instance is constructed.

virtual QSurfaceFormat	format () const =0

virtual void	swapBuffers (QPlatformSurface *surface)=0
	Reimplement in subclass to native swap buffers calls.

virtual GLuint	defaultFramebufferObject (QPlatformSurface *surface) const
	Reimplement in subclass if your platform uses framebuffer objects for surfaces.

virtual bool	makeCurrent (QPlatformSurface *surface)=0

virtual void	doneCurrent ()=0

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.

virtual bool	isSharing () const

virtual bool	isValid () const

virtual QFunctionPointer	getProcAddress (const char *procName)=0
	Reimplement in subclass to allow dynamic querying of OpenGL symbols.

QOpenGLContext *	context () const

Additional Inherited Members
Static Public Member Functions inherited from QPlatformOpenGLContext
static bool	parseOpenGLVersion (const QByteArray &versionString, int &major, int &minor)

Protected Member Functions inherited from QWindowsOpenGLContext
	QWindowsOpenGLContext ()=default

Detailed Description

Open GL context.

An Open GL context for use with several windows. As opposed to other implementations, activating a GL context for a window requires a HDC allocated for it. The first time this HDC is created for the window, the pixel format must be applied, which will affect the window as well. The HDCs are stored in a list of QOpenGLContextData and are released in doneCurrent().

Definition at line 167 of file qwindowsglcontext.h.

Member Typedef Documentation

◆ GL_Proc

typedef void(* QWindowsGLContext::GL_Proc) ()

Definition at line 183 of file qwindowsglcontext.h.

Constructor & Destructor Documentation

◆ QWindowsGLContext() [1/2]

QWindowsGLContext::QWindowsGLContext	(	QOpenGLStaticContext *	staticContext,
		QOpenGLContext *	context
	)

explicit

Definition at line 1028 of file qwindowsglcontext.cpp.

References ARB::choosePixelFormat(), GDI::choosePixelFormat(), QPlatformOpenGLContext::context(), ARB::createContext(), GDI::createContext(), createDummyGLWindow(), QOpenGLStaticContext::defaultFormat, QSurfaceFormat::DefaultRenderableType, describeFormats(), QWindowsIntegration::DisableArb, QOpenGLStaticContext::extensions, QOpenGLContext::format(), QWindowsOpenGLAdditionalFormat::formatFlags, GLint(), QOpenGLStaticContext::hasExtensions(), QWindowsIntegration::instance(), QSurfaceFormat::OpenGL, QOpenGLStaticContext::opengl32, QWindowsIntegration::options(), qCDebug, qErrnoWarning(), ARB::qSurfaceFormatFromHDC(), GDI::qSurfaceFormatFromPixelFormat(), qWarning, QWindowsGLDirectRendering, QWindowsGLRenderToPixmap, renderingContext(), QSurfaceFormat::setRenderableType(), QOpenGLContext::shareHandle(), QOpenGLStaticContext::sRGBCapableFramebuffer, testFlag(), QWindowsContext::verbose, and QOpenGLStaticContext::wglGetExtensionsStringARB.

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◆ QWindowsGLContext() [2/2]

QWindowsGLContext::QWindowsGLContext	(	QOpenGLStaticContext *	staticContext,
		HGLRC	context,
		HWND	window
	)

explicit

Definition at line 1149 of file qwindowsglcontext.cpp.

References ok, GDI::qSurfaceFormatFromPixelFormat(), and qWarning.

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◆ ~QWindowsGLContext()

QWindowsGLContext::~QWindowsGLContext ( )

override

Definition at line 1180 of file qwindowsglcontext.cpp.

References QOpenGLStaticContext::opengl32.

Member Function Documentation

◆ doneCurrent()

void QWindowsGLContext::doneCurrent ( )

overridevirtual

Implements QPlatformOpenGLContext.

Definition at line 1323 of file qwindowsglcontext.cpp.

References QOpenGLStaticContext::opengl32, qCDebug, and QWindowsContext::verbose.

◆ format()

QSurfaceFormat QWindowsGLContext::format ( ) const

inlineoverridevirtual

Implements QPlatformOpenGLContext.

Definition at line 176 of file qwindowsglcontext.h.

◆ getProcAddress()

QFunctionPointer QWindowsGLContext::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 1333 of file qwindowsglcontext.cpp.

References QOpenGLStaticContext::opengl32, qCDebug, QWindowsOpengl32DLL::resolve(), and QWindowsContext::verbose.

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