QOpenGLStaticContext Class Reference

Static Open GL context containing version information, extension function pointers, etc. More...

#include <qwindowsglcontext.h>

Inheritance diagram for QOpenGLStaticContext:

Collaboration diagram for QOpenGLStaticContext:

Public Types
enum	Extensions { SampleBuffers = 0x1 , sRGBCapableFramebuffer = 0x2 , Robustness = 0x4 }
typedef bool(APIENTRY *	WglGetPixelFormatAttribIVARB) (HDC hdc, int iPixelFormat, int iLayerPlane, uint nAttributes, const int *piAttributes, int *piValues)
typedef bool(APIENTRY *	WglChoosePixelFormatARB) (HDC hdc, const int *piAttribList, const float *pfAttribFList, uint nMaxFormats, int *piFormats, UINT *nNumFormats)
typedef HGLRC(APIENTRY *	WglCreateContextAttribsARB) (HDC, HGLRC, const int *)
typedef BOOL(APIENTRY *	WglSwapInternalExt) (int interval)
typedef int(APIENTRY *	WglGetSwapInternalExt) (void)
typedef const char *(APIENTRY *	WglGetExtensionsStringARB) (HDC)

Public Member Functions
bool	hasExtensions () const
QWindowsOpenGLContext *	createContext (QOpenGLContext *context) override
QWindowsOpenGLContext *	createContext (HGLRC context, HWND window) override
void *	moduleHandle () const override
QOpenGLContext::OpenGLModuleType	moduleType () const override
bool	supportsThreadedOpenGL () const override
Public Member Functions inherited from QWindowsStaticOpenGLContext
virtual	~QWindowsStaticOpenGLContext ()=default
virtual void *	createWindowSurface (void *, void *, int *)
virtual void	destroyWindowSurface (void *)

Static Public Member Functions
static QOpenGLStaticContext *	create (bool softwareRendering=false)
static QByteArray	getGlString (unsigned int which)
Static Public Member Functions inherited from QWindowsStaticOpenGLContext
static QWindowsStaticOpenGLContext *	create ()

Public Attributes
const QByteArray	vendor
const QByteArray	renderer
const QByteArray	extensionNames
unsigned	extensions
const QWindowsOpenGLContextFormat	defaultFormat
WglGetPixelFormatAttribIVARB	wglGetPixelFormatAttribIVARB
WglChoosePixelFormatARB	wglChoosePixelFormatARB
WglCreateContextAttribsARB	wglCreateContextAttribsARB
WglSwapInternalExt	wglSwapInternalExt
WglGetSwapInternalExt	wglGetSwapInternalExt
WglGetExtensionsStringARB	wglGetExtensionsStringARB

Static Public Attributes
static QWindowsOpengl32DLL	opengl32

Additional Inherited Members
Protected Member Functions inherited from QWindowsStaticOpenGLContext
	QWindowsStaticOpenGLContext ()=default

Detailed Description

Static Open GL context containing version information, extension function pointers, etc.

Functions pending integration in the next version of OpenGL are post-fixed ARB.

No WGL or OpenGL functions are called directly from the windows plugin. Instead, the static context loads opengl32.dll and resolves the necessary functions. This allows building the plugin without linking to opengl32 and enables QT_OPENGL_DYNAMIC builds where both the EGL and WGL (this) based implementation of the context are built.

Note

Initialization requires an active context (see create()).

See also

QWindowsGLContext

Definition at line 101 of file qwindowsglcontext.h.

Member Typedef Documentation

WglChoosePixelFormatARB

typedef bool(APIENTRY * QOpenGLStaticContext::WglChoosePixelFormatARB) (HDC hdc, const int *piAttribList, const float *pfAttribFList, uint nMaxFormats, int *piFormats, UINT *nNumFormats)

Definition at line 118 of file qwindowsglcontext.h.

WglCreateContextAttribsARB

typedef HGLRC(APIENTRY * QOpenGLStaticContext::WglCreateContextAttribsARB) (HDC, HGLRC, const int *)

Definition at line 123 of file qwindowsglcontext.h.

WglGetExtensionsStringARB

typedef const char *(APIENTRY * QOpenGLStaticContext::WglGetExtensionsStringARB) (HDC)

Definition at line 131 of file qwindowsglcontext.h.

WglGetPixelFormatAttribIVARB

typedef bool(APIENTRY * QOpenGLStaticContext::WglGetPixelFormatAttribIVARB) (HDC hdc, int iPixelFormat, int iLayerPlane, uint nAttributes, const int *piAttributes, int *piValues)

Definition at line 113 of file qwindowsglcontext.h.

WglGetSwapInternalExt

typedef int(APIENTRY * QOpenGLStaticContext::WglGetSwapInternalExt) (void)

Definition at line 128 of file qwindowsglcontext.h.

WglSwapInternalExt

typedef BOOL(APIENTRY * QOpenGLStaticContext::WglSwapInternalExt) (int interval)

Definition at line 126 of file qwindowsglcontext.h.

Member Enumeration Documentation

Extensions

enum QOpenGLStaticContext::Extensions

Enumerator
SampleBuffers
sRGBCapableFramebuffer
Robustness

Definition at line 106 of file qwindowsglcontext.h.

Member Function Documentation

create()

QOpenGLStaticContext * QOpenGLStaticContext::create ( bool softwareRendering = false )

static

Definition at line 998 of file qwindowsglcontext.cpp.

References opengl32, qCDebug, and qWarning.

createContext() [1/2]

QWindowsOpenGLContext * QOpenGLStaticContext::createContext ( HGLRC context, HWND window )

overridevirtual

Implements QWindowsStaticOpenGLContext.

Definition at line 198 of file qwindowsglcontext.cpp.

References context, and window().

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createContext() [2/2]

QWindowsOpenGLContext * QOpenGLStaticContext::createContext ( QOpenGLContext * context )

overridevirtual

Implements QWindowsStaticOpenGLContext.

Definition at line 193 of file qwindowsglcontext.cpp.

References context.

getGlString()

QByteArray QOpenGLStaticContext::getGlString ( unsigned int which )

static

Definition at line 991 of file qwindowsglcontext.cpp.

References opengl32, and QByteArray().

Referenced by QWindowsOpenGLContextFormat::current().

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hasExtensions()

bool QOpenGLStaticContext::hasExtensions ( ) const

inline

Definition at line 134 of file qwindowsglcontext.h.

References wglChoosePixelFormatARB, wglCreateContextAttribsARB, and wglGetPixelFormatAttribIVARB.

Referenced by QWindowsGLContext::QWindowsGLContext().

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moduleHandle()

void * QOpenGLStaticContext::moduleHandle ( ) const

inlineoverridevirtual

Implements QWindowsStaticOpenGLContext.

Definition at line 142 of file qwindowsglcontext.h.

References opengl32.

moduleType()

QOpenGLContext::OpenGLModuleType QOpenGLStaticContext::moduleType ( ) const

inlineoverridevirtual

Implements QWindowsStaticOpenGLContext.

Definition at line 143 of file qwindowsglcontext.h.

References QOpenGLContext::LibGL.

supportsThreadedOpenGL()

bool QOpenGLStaticContext::supportsThreadedOpenGL ( ) const

inlineoverridevirtual

Reimplemented from QWindowsStaticOpenGLContext.

Definition at line 148 of file qwindowsglcontext.h.

References opengl32.

Member Data Documentation

defaultFormat

const QWindowsOpenGLContextFormat QOpenGLStaticContext::defaultFormat

Definition at line 155 of file qwindowsglcontext.h.

Referenced by QWindowsGLContext::QWindowsGLContext().

extensionNames

const QByteArray QOpenGLStaticContext::extensionNames

Definition at line 153 of file qwindowsglcontext.h.

extensions

unsigned QOpenGLStaticContext::extensions

Definition at line 154 of file qwindowsglcontext.h.

Referenced by QWindowsGLContext::QWindowsGLContext().

opengl32

QT_BEGIN_NAMESPACE QWindowsOpengl32DLL QOpenGLStaticContext::opengl32

static

Definition at line 164 of file qwindowsglcontext.h.

Referenced by QOpenGLTemporaryContext::QOpenGLTemporaryContext(), QWindowsGLContext::QWindowsGLContext(), QOpenGLTemporaryContext::~QOpenGLTemporaryContext(), QWindowsGLContext::~QWindowsGLContext(), ARB::choosePixelFormat(), GDI::choosePixelFormat(), create(), GDI::createContext(), createDummyGLContext(), QWindowsOpenGLContextFormat::current(), currentOpenGLContextData(), describeFormats(), QWindowsGLContext::doneCurrent(), getGlString(), QWindowsGLContext::getProcAddress(), isSoftwareGl(), QWindowsGLContext::makeCurrent(), moduleHandle(), supportsThreadedOpenGL(), and QWindowsGLContext::swapBuffers().

renderer

const QByteArray QOpenGLStaticContext::renderer

Definition at line 152 of file qwindowsglcontext.h.

vendor

const QByteArray QOpenGLStaticContext::vendor

Definition at line 151 of file qwindowsglcontext.h.

wglChoosePixelFormatARB

WglChoosePixelFormatARB QOpenGLStaticContext::wglChoosePixelFormatARB

Definition at line 158 of file qwindowsglcontext.h.

Referenced by hasExtensions().

wglCreateContextAttribsARB

WglCreateContextAttribsARB QOpenGLStaticContext::wglCreateContextAttribsARB

Definition at line 159 of file qwindowsglcontext.h.

Referenced by hasExtensions().

wglGetExtensionsStringARB

WglGetExtensionsStringARB QOpenGLStaticContext::wglGetExtensionsStringARB

Definition at line 162 of file qwindowsglcontext.h.

Referenced by QWindowsGLContext::QWindowsGLContext().

wglGetPixelFormatAttribIVARB

WglGetPixelFormatAttribIVARB QOpenGLStaticContext::wglGetPixelFormatAttribIVARB

Definition at line 157 of file qwindowsglcontext.h.

Referenced by hasExtensions().

wglGetSwapInternalExt

WglGetSwapInternalExt QOpenGLStaticContext::wglGetSwapInternalExt

Definition at line 161 of file qwindowsglcontext.h.

wglSwapInternalExt

WglSwapInternalExt QOpenGLStaticContext::wglSwapInternalExt

Definition at line 160 of file qwindowsglcontext.h.

Referenced by QWindowsGLContext::makeCurrent().

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

• qtbase/src/plugins/platforms/windows/qwindowsglcontext.h (05fc3aef53348fb58be6308076e000825b704e58)
• qtbase/src/plugins/platforms/windows/qwindowsglcontext.cpp (dc5a29b3246d19bd620acc9fdaea929bf856d8dc)