QEGLPlatformContext Class Reference

#include <qeglplatformcontext.h>

Inheritance diagram for QEGLPlatformContext:

Public Functions
void	doneCurrent ()
	Reimplement in subclass to release current context. More...
EGLContext	eglContext () const
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...
	QEGLPlatformContext (EGLDisplay display, EGLConfig config, EGLint contextAttrs[], EGLSurface surface, EGLenum eglApi, QEGLPlatformContext *shareContext=0)
void	swapBuffers ()
	Reimplement in subclass to native swap buffers calls. More...
	~QEGLPlatformContext ()
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...

Properties
EGLenum	m_eglApi
EGLContext	m_eglContext
EGLDisplay	m_eglDisplay
EGLSurface	m_eglSurface
QPlatformWindowFormat	m_windowFormat

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 48 of file qeglplatformcontext.h.

Constructors and Destructors

QEGLPlatformContext()

QEGLPlatformContext::QEGLPlatformContext	(	EGLDisplay	display,
		EGLConfig	config,
		EGLint	contextAttrs[],
		EGLSurface	surface,
		EGLenum	eglApi,
		QEGLPlatformContext *	shareContext = 0
	)

Definition at line 51 of file qeglplatformcontext.cpp.

    : QPlatformGLContext()
    , m_eglDisplay(display)
    , m_eglSurface(surface)
    , m_eglApi(eglApi)
{
    if (m_eglSurface == EGL_NO_SURFACE) {
        qWarning("Createing QEGLPlatformContext with no surface");
    }

    eglBindAPI(m_eglApi);
    EGLContext shareEglContext = shareContext ? shareContext->eglContext() : 0;
    m_eglContext = eglCreateContext(m_eglDisplay,config, shareEglContext, contextAttrs);
    if (m_eglContext == EGL_NO_CONTEXT) {
        qWarning("Could not create the egl context\n");
        eglTerminate(m_eglDisplay);
        qFatal("EGL error");
    }

    m_windowFormat = qt_qPlatformWindowFormatFromConfig(display,config);
}

~QEGLPlatformContext()

QEGLPlatformContext::~QEGLPlatformContext

(

)

Definition at line 73 of file qeglplatformcontext.cpp.

{
#ifdef QEGL_EXTRA_DEBUG
    qWarning("QEglContext::~QEglContext(): %p\n",this);
#endif
    if (m_eglSurface != EGL_NO_SURFACE) {
        doneCurrent();
        eglDestroySurface(m_eglDisplay, m_eglSurface);
        m_eglSurface = EGL_NO_SURFACE;
    }

    if (m_eglContext != EGL_NO_CONTEXT) {
        eglDestroyContext(m_eglDisplay, m_eglContext);
        m_eglContext = EGL_NO_CONTEXT;
    }
}

Functions

doneCurrent()

void QEGLPlatformContext::doneCurrent ( )

virtual

Reimplement in subclass to release current context.

Typically this is calling makeCurrent with 0 "surface"

Reimplemented from QPlatformGLContext.

Definition at line 120 of file qeglplatformcontext.cpp.

Referenced by ~QEGLPlatformContext().

{
    QPlatformGLContext::doneCurrent();
#ifdef QEGL_EXTRA_DEBUG
    qWarning("QEglContext::doneCurrent:%p\n",this);
#endif
    eglBindAPI(m_eglApi);
    bool ok = eglMakeCurrent(m_eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
    if (!ok)
        qWarning("QEGLPlatformContext::doneCurrent(): eglError: %d, this: %p \n", eglGetError(), this);
}

eglContext()

EGLContext QEGLPlatformContext::eglContext

(

)

const

Definition at line 155 of file qeglplatformcontext.cpp.

Referenced by QXcbNativeInterface::eglContextForWidget(), and QEGLPlatformContext().

{
    return m_eglContext;
}

getProcAddress()

void * QEGLPlatformContext::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 141 of file qeglplatformcontext.cpp.

{
#ifdef QEGL_EXTRA_DEBUG
    qWarning("QEglContext::getProcAddress%p\n",this);
#endif
    eglBindAPI(m_eglApi);
    return (void *)eglGetProcAddress(qPrintable(procName));
}

makeCurrent()

void QEGLPlatformContext::makeCurrent ( )

virtual

Reimplement in subclass to do makeCurrent on native GL context.

Reimplemented from QPlatformGLContext.

Definition at line 90 of file qeglplatformcontext.cpp.

{
    QPlatformGLContext::makeCurrent();
#ifdef QEGL_EXTRA_DEBUG
    qWarning("QEglContext::makeCurrent: %p\n",this);
#endif
    eglBindAPI(m_eglApi);
    bool ok = eglMakeCurrent(m_eglDisplay, m_eglSurface, m_eglSurface, m_eglContext);
    if (!ok)
        qWarning("QEGLPlatformContext::makeCurrent: eglError: %d, this: %p \n", eglGetError(), this);
#ifdef QEGL_EXTRA_DEBUG
    static bool showDebug = true;
    if (showDebug) {
        showDebug = false;
        const char *str = (const char*)glGetString(GL_VENDOR);
        qWarning("Vendor %s\n", str);
        str = (const char*)glGetString(GL_RENDERER);
        qWarning("Renderer %s\n", str);
        str = (const char*)glGetString(GL_VERSION);
        qWarning("Version %s\n", str);

        str = (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION);
        qWarning("Extensions %s\n",str);

        str = (const char*)glGetString(GL_EXTENSIONS);
        qWarning("Extensions %s\n", str);

    }
#endif
}

platformWindowFormat()

QPlatformWindowFormat QEGLPlatformContext::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 150 of file qeglplatformcontext.cpp.

{
    return m_windowFormat;
}

swapBuffers()

void QEGLPlatformContext::swapBuffers ( )

virtual

Reimplement in subclass to native swap buffers calls.

Implements QPlatformGLContext.

Definition at line 131 of file qeglplatformcontext.cpp.

{
#ifdef QEGL_EXTRA_DEBUG
    qWarning("QEglContext::swapBuffers:%p\n",this);
#endif
    eglBindAPI(m_eglApi);
    bool ok = eglSwapBuffers(m_eglDisplay, m_eglSurface);
    if (!ok)
        qWarning("QEGLPlatformContext::swapBuffers(): eglError: %d, this: %p \n", eglGetError(), this);
}

Properties

m_eglApi

EGLenum QEGLPlatformContext::m_eglApi

private

Definition at line 66 of file qeglplatformcontext.h.

Referenced by doneCurrent(), getProcAddress(), makeCurrent(), QEGLPlatformContext(), and swapBuffers().

m_eglContext

EGLContext QEGLPlatformContext::m_eglContext

private

Definition at line 63 of file qeglplatformcontext.h.

Referenced by eglContext(), makeCurrent(), QEGLPlatformContext(), and ~QEGLPlatformContext().

m_eglDisplay

EGLDisplay QEGLPlatformContext::m_eglDisplay

private

Definition at line 64 of file qeglplatformcontext.h.

Referenced by doneCurrent(), makeCurrent(), QEGLPlatformContext(), swapBuffers(), and ~QEGLPlatformContext().

m_eglSurface

EGLSurface QEGLPlatformContext::m_eglSurface

private

Definition at line 65 of file qeglplatformcontext.h.

Referenced by makeCurrent(), QEGLPlatformContext(), swapBuffers(), and ~QEGLPlatformContext().

m_windowFormat

QPlatformWindowFormat QEGLPlatformContext::m_windowFormat

private

Definition at line 68 of file qeglplatformcontext.h.

Referenced by platformWindowFormat(), and QEGLPlatformContext().

---

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

• /src/plugins/platforms/eglconvenience/qeglplatformcontext.h
• /src/plugins/platforms/eglconvenience/qeglplatformcontext.cpp