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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 403 insertions, 0 deletions

diff --git a/src/opengl/qpixmapdata_x11gl_egl.cpp b/src/opengl/qpixmapdata_x11gl_egl.cpp
new file mode 100644
index 0000000000..6126ba46ae
--- /dev/null
+++ b/src/opengl/qpixmapdata_x11gl_egl.cpp
@@ -0,0 +1,403 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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);
+            sharePixmap = new QPixmap(rgbPixmapData);
+            EGLSurface sharePixmapSurface = QEgl::createSurface(sharePixmap, rgbConfig);
+            rgbPixmapData->gl_surface = (void*)sharePixmapSurface;
+
+            // Create the actual QGLContext which will be used for sharing
+            sharedQGLContext = new QGLContext(QX11GLPixmapData::glFormat());
+            sharedQGLContext->d_func()->eglContext = rgbContext;
+            sharedQGLContext->d_func()->eglSurface = sharePixmapSurface;
+            sharedQGLContext->d_func()->valid = true;
+            qt_glformat_from_eglconfig(sharedQGLContext->d_func()->glFormat, rgbConfig);
+
+
+            valid = rgbContext->makeCurrent(sharePixmapSurface);
+
+            // If the ARGB & RGB configs are different, check ARGB works too:
+            if (argbConfig != rgbConfig) {
+                QX11PixmapData *argbPixmapData = new QX11PixmapData(QPixmapData::PixmapType);
+                argbPixmapData->resize(8, 8);
+                argbPixmapData->fill(Qt::transparent); // Force ARGB
+                QPixmap argbPixmap(argbPixmapData); // destroys pixmap data when goes out of scope
+                EGLSurface argbPixmapSurface = QEgl::createSurface(&argbPixmap, argbConfig);
+                valid = argbContext->makeCurrent(argbPixmapSurface);
+                argbContext->doneCurrent();
+                eglDestroySurface(QEgl::display(), argbPixmapSurface);
+                argbPixmapData->gl_surface = 0;
+            }
+
+            if (!valid) {
+                qWarning() << "Unable to make pixmap surface current:" << QEgl::errorString();
+                break;
+            }
+
+            // The pixmap surface destruction hooks are installed by QGLTextureCache, so we
+            // must make sure this is instanciated:
+            QGLTextureCache::instance();
+        } while(0);
+
+        if (!valid)
+            cleanup();
+        else
+            qDebug("Using QX11GLPixmapData with EGL config %d for ARGB and config %d for RGB", argbConfigId, rgbConfigId);
+
+    }
+
+    ~QX11GLSharedContexts() {
+        cleanup();
+    }
+
+    void cleanup() {
+        if (sharedQGLContext) {
+            delete sharedQGLContext;
+            sharedQGLContext = 0;
+        }
+        if (argbContext && argbContext != rgbContext)
+            delete argbContext;
+        argbContext = 0;
+
+        if (rgbContext) {
+            delete rgbContext;
+            rgbContext = 0;
+        }
+
+        // Deleting the QPixmap will fire the pixmap destruction cleanup hooks which in turn
+        // will destroy the egl surface:
+        if (sharePixmap) {
+            delete sharePixmap;
+            sharePixmap = 0;
+        }
+    }
+
+    bool isValid() { return valid;}
+
+    // On 16bpp systems, RGB & ARGB pixmaps are different bit-depths and therefore need
+    // different contexts:
+    QEglContext *rgbContext;
+    QEglContext *argbContext;
+
+    // The share context wraps the rgbContext and is used as the master of the context share
+    // group. As all other contexts will have the same egl context (or a shared one if rgb != argb)
+    // all QGLContexts will actually be sharing and can be in the same context group.
+    QGLContext  *sharedQGLContext;
+private:
+    QPixmap     *sharePixmap;
+    bool         valid;
+};
+
+static void qt_cleanup_x11gl_share_contexts();
+
+Q_GLOBAL_STATIC_WITH_INITIALIZER(QX11GLSharedContexts, qt_x11gl_share_contexts,
+                                 {
+                                     qAddPostRoutine(qt_cleanup_x11gl_share_contexts);
+                                 })
+
+static void qt_cleanup_x11gl_share_contexts()
+{
+    qt_x11gl_share_contexts()->cleanup();
+}
+
+
+QX11GLSharedContexts* QX11GLPixmapData::sharedContexts()
+{
+    return qt_x11gl_share_contexts();
+}
+
+bool QX11GLPixmapData::hasX11GLPixmaps()
+{
+    static bool checkedForX11GLPixmaps = false;
+    static bool haveX11GLPixmaps = false;
+
+    if (checkedForX11GLPixmaps)
+        return haveX11GLPixmaps;
+
+    haveX11GLPixmaps = qt_x11gl_share_contexts()->isValid();
+    checkedForX11GLPixmaps = true;
+
+    return haveX11GLPixmaps;
+}
+
+QX11GLPixmapData::QX11GLPixmapData()
+    : QX11PixmapData(QPixmapData::PixmapType),
+      ctx(0)
+{
+}
+
+QX11GLPixmapData::~QX11GLPixmapData()
+{
+    if (ctx)
+        delete ctx;
+}
+
+
+void QX11GLPixmapData::fill(const QColor &color)
+{
+    if (ctx) {
+        ctx->makeCurrent();
+        glFinish();
+        eglWaitClient();
+    }
+
+    QX11PixmapData::fill(color);
+    XSync(X11->display, False);
+
+    if (ctx) {
+        ctx->makeCurrent();
+        eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+    }
+}
+
+void QX11GLPixmapData::copy(const QPixmapData *data, const QRect &rect)
+{
+    if (ctx) {
+        ctx->makeCurrent();
+        glFinish();
+        eglWaitClient();
+    }
+
+    QX11PixmapData::copy(data, rect);
+    XSync(X11->display, False);
+
+    if (ctx) {
+        ctx->makeCurrent();
+        eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+    }
+}
+
+bool QX11GLPixmapData::scroll(int dx, int dy, const QRect &rect)
+{
+    if (ctx) {
+        ctx->makeCurrent();
+        glFinish();
+        eglWaitClient();
+    }
+
+    bool success = QX11PixmapData::scroll(dx, dy, rect);
+    XSync(X11->display, False);
+
+    if (ctx) {
+        ctx->makeCurrent();
+        eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+    }
+
+    return success;
+}
+
+#if !defined(QT_OPENGL_ES_1)
+Q_GLOBAL_STATIC(QGL2PaintEngineEx, qt_gl_pixmap_2_engine)
+#endif
+
+#ifndef QT_OPENGL_ES_2
+Q_GLOBAL_STATIC(QOpenGLPaintEngine, qt_gl_pixmap_engine)
+#endif
+
+
+QPaintEngine* QX11GLPixmapData::paintEngine() const
+{
+    // We need to create the context before beginPaint - do it here:
+    if (!ctx) {
+        ctx = new QGLContext(glFormat());
+        Q_ASSERT(ctx->d_func()->eglContext == 0);
+        ctx->d_func()->eglContext = hasAlphaChannel() ? sharedContexts()->argbContext : sharedContexts()->rgbContext;
+
+        // While we use a separate QGLContext for each pixmap, the underlying QEglContext is
+        // the same. So we must use a "fake" QGLContext and fool the texture cache into thinking
+        // each pixmap's QGLContext is sharing with this central one. The only place this is
+        // going to fail is where we the underlying EGL RGB and ARGB contexts aren't sharing.
+        ctx->d_func()->sharing = true;
+        QGLContextGroup::addShare(ctx, sharedContexts()->sharedQGLContext);
+
+        // Update the glFormat for the QGLContext:
+        qt_glformat_from_eglconfig(ctx->d_func()->glFormat, ctx->d_func()->eglContext->config());
+    }
+
+    QPaintEngine* engine;
+
+#if defined(QT_OPENGL_ES_1)
+    engine = qt_gl_pixmap_engine();
+#elif defined(QT_OPENGL_ES_2)
+    engine = qt_gl_pixmap_2_engine();
+#else
+    if (qt_gl_preferGL2Engine())
+        engine = qt_gl_pixmap_2_engine();
+    else
+        engine = qt_gl_pixmap_engine();
+#endif
+
+
+
+    // Support multiple painters on multiple pixmaps simultaniously
+    if (engine->isActive()) {
+        qWarning("Pixmap paint engine already active");
+
+#if defined(QT_OPENGL_ES_1)
+        engine = new QOpenGLPaintEngine;
+#elif defined(QT_OPENGL_ES_2)
+        engine = new QGL2PaintEngineEx;
+#else
+        if (qt_gl_preferGL2Engine())
+            engine = new QGL2PaintEngineEx;
+        else
+            engine = new QOpenGLPaintEngine;
+#endif
+
+        engine->setAutoDestruct(true);
+        return engine;
+    }
+
+    return engine;
+}
+
+void QX11GLPixmapData::beginPaint()
+{
+//    qDebug("QX11GLPixmapData::beginPaint()");
+    // TODO: Check to see if the surface is renderable
+    if ((EGLSurface)gl_surface == EGL_NO_SURFACE) {
+        QPixmap tmpPixmap(this);
+        EGLConfig cfg = ctx->d_func()->eglContext->config();
+        Q_ASSERT(cfg != QEGL_NO_CONFIG);
+
+//        qDebug("QX11GLPixmapData - using EGL Config ID %d", ctx->d_func()->eglContext->configAttrib(EGL_CONFIG_ID));
+        EGLSurface surface = QEgl::createSurface(&tmpPixmap, cfg);
+        if (surface == EGL_NO_SURFACE) {
+            qWarning() << "Error creating EGL surface for pixmap:" << QEgl::errorString();
+            return;
+        }
+        gl_surface = (void*)surface;
+        ctx->d_func()->eglSurface = surface;
+        ctx->d_func()->valid = true;
+    }
+    QGLPaintDevice::beginPaint();
+}
+
+QGLContext* QX11GLPixmapData::context() const
+{
+    return ctx;
+}
+
+QSize QX11GLPixmapData::size() const
+{
+    return QSize(w, h);
+}
+
+
+QGLFormat QX11GLPixmapData::glFormat()
+{
+    return QGLFormat::defaultFormat(); //###
+}
+
+QT_END_NAMESPACE