Remove dummy impl. of shared graphics cache in XCB plugin

This implementation was disabled and didn't really work
properly, so it doesn't make sense to update or do
bug fixes to it. Removing it completely instead.

Change-Id: I62abe35f0f9a91bb207b87296d25c3c62d58228e
Reviewed-by: Jiang Jiang <jiang.jiang@nokia.com>

1 files changed, 0 insertions, 290 deletions

diff --git a/src/plugins/platforms/xcb/qxcbsharedgraphicscache.cpp b/src/plugins/platforms/xcb/qxcbsharedgraphicscache.cpp
deleted file mode 100644
index fa937504ad..0000000000
--- a/src/plugins/platforms/xcb/qxcbsharedgraphicscache.cpp
+++ /dev/null
@@ -1,290 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: http://www.qt-project.org/
-**
-** This file is part of the plugins of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** GNU Lesser General Public License Usage
-** 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.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU General
-** Public License version 3.0 as published by the Free Software Foundation
-** and appearing in the file LICENSE.GPL included in the packaging of this
-** file. Please review the following information to ensure the GNU General
-** Public License version 3.0 requirements will be met:
-** http://www.gnu.org/copyleft/gpl.html.
-**
-** Other Usage
-** Alternatively, this file may be used in accordance with the terms and
-** conditions contained in a signed written agreement between you and Nokia.
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#if defined(QT_USE_XCB_SHARED_GRAPHICS_CACHE)
-
-#include "qxcbsharedgraphicscache.h"
-#include "qxcbsharedbuffermanager.h"
-
-#include <QtCore/qsharedmemory.h>
-
-#include <QtGui/qopenglcontext.h>
-#include <QtGui/qscreen.h>
-
-#define GL_GLEXT_PROTOTYPES
-#include <GLES2/gl2ext.h>
-
-#define SHAREDGRAPHICSCACHE_DEBUG 1
-
-QT_BEGIN_NAMESPACE
-
-QXcbSharedGraphicsCache::QXcbSharedGraphicsCache(QObject *parent)
-    : QPlatformSharedGraphicsCache(parent)
-    , m_bufferManager(new QXcbSharedBufferManager)
-{
-}
-
-void QXcbSharedGraphicsCache::requestItems(const QByteArray &cacheId,
-                                                  const QVector<quint32> &itemIds)
-{
-    m_bufferManager->beginSharedBufferAction(cacheId);
-
-    QSet<quint32> itemsForRequest;
-    for (int i=0; i<itemIds.size(); ++i)
-        itemsForRequest.insert(itemIds.at(i));
-
-    m_bufferManager->requestItems(itemsForRequest);
-    m_bufferManager->endSharedBufferAction();
-
-    processPendingItems();
-}
-
-void QXcbSharedGraphicsCache::insertItems(const QByteArray &cacheId,
-                                                 const QVector<quint32> &itemIds,
-                                                 const QVector<QImage> &items)
-{
-    m_bufferManager->beginSharedBufferAction(cacheId);
-
-    QSet<quint32> itemsForRequest;
-    for (int i=0; i<itemIds.size(); ++i) {
-        QImage image = items.at(i);
-        m_bufferManager->insertItem(itemIds.at(i), image.bits(), image.width(), image.height());
-        itemsForRequest.insert(itemIds.at(i));
-    }
-
-    // ### To avoid loops, we could check missing items here and notify the client
-    m_bufferManager->requestItems(itemsForRequest);
-
-    m_bufferManager->endSharedBufferAction();
-
-    processPendingItems();
-}
-
-void QXcbSharedGraphicsCache::ensureCacheInitialized(const QByteArray &cacheId,
-                                                            BufferType bufferType,
-                                                            PixelFormat pixelFormat)
-{
-    Q_UNUSED(cacheId);
-    Q_UNUSED(bufferType);
-    Q_UNUSED(pixelFormat);
-}
-
-
-void QXcbSharedGraphicsCache::releaseItems(const QByteArray &cacheId,
-                                                  const QVector<quint32> &itemIds)
-{
-    m_bufferManager->beginSharedBufferAction(cacheId);
-
-    QSet<quint32> itemsToRelease;
-    for (int i=0; i<itemIds.size(); ++i)
-        itemsToRelease.insert(itemIds.at(i));
-
-    m_bufferManager->releaseItems(itemsToRelease);
-
-    m_bufferManager->endSharedBufferAction();
-
-    processPendingItems();
-}
-
-void QXcbSharedGraphicsCache::serializeBuffer(void *bufferId,
-                                                     QByteArray *serializedData,
-                                                     int *fileDescriptor) const
-{
-    QXcbSharedBufferManager::Buffer *buffer =
-            reinterpret_cast<QXcbSharedBufferManager::Buffer *>(bufferId);
-
-    QPair<QByteArray, int> bufferName = m_bufferManager->serializeBuffer(buffer->buffer);
-
-    *serializedData = bufferName.first;
-    *fileDescriptor = bufferName.second;
-}
-
-GLuint QXcbSharedGraphicsCache::textureIdForBuffer(void *bufferId)
-{
-#  if defined(SHAREDGRAPHICSCACHE_DEBUG)
-    qDebug("QXcbSharedGraphicsCache::textureIdForBuffer");
-#  endif
-
-    QXcbSharedBufferManager::Buffer *buffer =
-            reinterpret_cast<QXcbSharedBufferManager::Buffer *>(bufferId);
-
-    if (buffer->textureId == 0) {
-        glGenTextures(1, &buffer->textureId);
-        if (buffer->textureId == 0) {
-            qWarning("QXcbSharedGraphicsCache::textureIdForBuffer: Failed to generate texture (gl error: 0x%x)",
-                     glGetError());
-            return 0;
-        }
-
-        glBindTexture(GL_TEXTURE_2D, buffer->textureId);
-        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-    }
-
-    glBindTexture(GL_TEXTURE_2D, buffer->textureId);
-    glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, buffer->width, buffer->height, 0, GL_ALPHA,
-                 GL_UNSIGNED_BYTE, buffer->buffer->data());
-    glBindTexture(GL_TEXTURE_2D, 0);
-
-    return buffer->textureId;
-}
-
-void QXcbSharedGraphicsCache::referenceBuffer(void *bufferId)
-{
-    QXcbSharedBufferManager::Buffer *buffer =
-        reinterpret_cast<QXcbSharedBufferManager::Buffer *>(bufferId);
-
-    buffer->ref.ref();
-}
-
-bool QXcbSharedGraphicsCache::dereferenceBuffer(void *bufferId)
-{
-    QXcbSharedBufferManager::Buffer *buffer =
-            reinterpret_cast<QXcbSharedBufferManager::Buffer *>(bufferId);
-
-    if (buffer->ref.deref())
-        return true;
-
-    if (buffer->textureId != 0) {
-        glDeleteTextures(1, &buffer->textureId);
-        buffer->textureId = 0;
-    }
-
-    return false;
-}
-
-void QXcbSharedGraphicsCache::processPendingItems()
-{
-#  if defined(SHAREDGRAPHICSCACHE_DEBUG)
-        qDebug("QXcbSharedGraphicsCache::processPendingItems");
-#  endif
-
-    {
-        QXcbSharedBufferManager::PendingItemIds pendingMissingItems = m_bufferManager->pendingItemsMissing();
-        QXcbSharedBufferManager::PendingItemIds::const_iterator it;
-
-
-        for (it = pendingMissingItems.constBegin(); it != pendingMissingItems.constEnd(); ++it) {
-            QVector<quint32> missingItems;
-
-            const QSet<quint32> &items = it.value();
-            QSet<quint32>::const_iterator itemIt;
-            for (itemIt = items.constBegin(); itemIt != items.constEnd(); ++itemIt)
-                missingItems.append(*itemIt);
-
-#  if defined(SHAREDGRAPHICSCACHE_DEBUG)
-        qDebug("QXcbSharedGraphicsCache::processPendingItems: %d missing items",
-               missingItems.size());
-#  endif
-
-            if (!missingItems.isEmpty())
-                emit itemsMissing(it.key(), missingItems);
-        }
-    }
-
-    {
-        QXcbSharedBufferManager::PendingItemIds pendingInvalidatedItems = m_bufferManager->pendingItemsInvalidated();
-        QXcbSharedBufferManager::PendingItemIds::const_iterator it;
-
-        for (it = pendingInvalidatedItems.constBegin(); it != pendingInvalidatedItems.constEnd(); ++it) {
-            QVector<quint32> invalidatedItems;
-
-            const QSet<quint32> &items = it.value();
-            QSet<quint32>::const_iterator itemIt;
-            for (itemIt = items.constBegin(); itemIt != items.constEnd(); ++itemIt)
-                invalidatedItems.append(*itemIt);
-
-#  if defined(SHAREDGRAPHICSCACHE_DEBUG)
-            qDebug("QXcbSharedGraphicsCache::processPendingItems: %d invalidated items",
-               invalidatedItems.size());
-#  endif
-
-            if (!invalidatedItems.isEmpty())
-                emit itemsInvalidated(it.key(), invalidatedItems);
-        }
-    }
-
-    {
-        QXcbSharedBufferManager::PendingItemIds pendingReadyItems = m_bufferManager->pendingItemsReady();
-        QXcbSharedBufferManager::PendingItemIds::const_iterator it;
-
-        for (it = pendingReadyItems.constBegin(); it != pendingReadyItems.constEnd(); ++it) {
-            QHash<QXcbSharedBufferManager::Buffer *, ReadyItem> readyItemsForBuffer;
-            const QSet<quint32> &items = it.value();
-
-            QByteArray cacheId = it.key();
-
-            QSet<quint32>::const_iterator itemIt;
-            for (itemIt = items.constBegin(); itemIt != items.constEnd(); ++itemIt) {
-                QXcbSharedBufferManager::Buffer *buffer;
-                int x = -1;
-                int y = -1;
-
-                m_bufferManager->getBufferForItem(cacheId, *itemIt, &buffer, &x, &y);
-
-                readyItemsForBuffer[buffer].itemIds.append(*itemIt);
-                readyItemsForBuffer[buffer].positions.append(QPoint(x, y));
-            }
-
-            QHash<QXcbSharedBufferManager::Buffer*, ReadyItem>::iterator readyItemIt
-                    = readyItemsForBuffer.begin();
-            while (readyItemIt != readyItemsForBuffer.end()) {
-                QXcbSharedBufferManager::Buffer *buffer = readyItemIt.key();
-                if (!readyItemIt.value().itemIds.isEmpty()) {
-#  if defined(SHAREDGRAPHICSCACHE_DEBUG)
-                    qDebug("QXcbSharedGraphicsCache::processPendingItems: %d ready items",
-                            readyItemIt.value().itemIds.size());
-#  endif
-
-                    emit itemsAvailable(cacheId, buffer, QSize(buffer->width, buffer->height),
-                                        readyItemIt.value().itemIds, readyItemIt.value().positions);
-                }
-                ++readyItemIt;
-            }
-        }
-    }
-}
-
-QT_END_NAMESPACE
-
-#endif // QT_USE_XCB_SHARED_GRAPHICS_CACHE