source: trunk/src/opengl/qpixmapdata_x11gl_egl.cpp@ 1040

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#include <QDebug>

#include <QtGui/private/qt_x11_p.h>
#include <QtGui/private/qegl_p.h>
#include <QtGui/private/qeglproperties_p.h>
#include <QtGui/private/qeglcontext_p.h>

#if !defined(QT_OPENGL_ES_1)
#include <QtOpenGL/private/qpaintengineex_opengl2_p.h>
#endif

#ifndef QT_OPENGL_ES_2
#include <QtOpenGL/private/qpaintengine_opengl_p.h>
#endif

#include <QtOpenGL/private/qgl_p.h>
#include <QtOpenGL/private/qgl_egl_p.h>

#include "qpixmapdata_x11gl_p.h"

QT_BEGIN_NAMESPACE


class QX11GLSharedContexts
{
public:
    QX11GLSharedContexts()
        : rgbContext(0)
        , argbContext(0)
        , sharedQGLContext(0)
        , sharePixmap(0)
    {
        EGLint rgbConfigId;
        EGLint argbConfigId;

        do {
            EGLConfig rgbConfig = QEgl::defaultConfig(QInternal::Pixmap, QEgl::OpenGL, QEgl::Renderable);
            EGLConfig argbConfig = QEgl::defaultConfig(QInternal::Pixmap, QEgl::OpenGL,
                                                       QEgl::Renderable | QEgl::Translucent);

            eglGetConfigAttrib(QEgl::display(), rgbConfig, EGL_CONFIG_ID, &rgbConfigId);
            eglGetConfigAttrib(QEgl::display(), argbConfig, EGL_CONFIG_ID, &argbConfigId);

            rgbContext = new QEglContext;
            rgbContext->setConfig(rgbConfig);
            rgbContext->createContext();

            if (!rgbContext->isValid())
                break;

            // If the RGB & ARGB configs are the same, use the same egl context for both:
            if (rgbConfig == argbConfig)
                argbContext = rgbContext;

            // Otherwise, create a separate context to be used for ARGB pixmaps:
            if (!argbContext) {
                argbContext = new QEglContext;
                argbContext->setConfig(argbConfig);
                bool success = argbContext->createContext(rgbContext);
                if (!success) {
                    qWarning("QX11GLPixmapData - RGB & ARGB contexts aren't shared");
                    success = argbContext->createContext();
                    if (!success)
                        argbContext = rgbContext; // Might work, worth a shot at least.
                }
            }

            if (!argbContext->isValid())
                break;

            // Create the pixmap which will be used to create the egl surface for the share QGLContext
            QX11PixmapData *rgbPixmapData = new QX11PixmapData(QPixmapData::PixmapType);
            rgbPixmapData->resize(8, 8);
            rgbPixmapData->fill(Qt::red);