Added QSGPainterNode abstraction to QSGAdaptationLayer

This allows the scenegraph backend to customize how QSGPainterNodes are
rendered.

Change-Id: I640dcf121d0be6bda615cf30591d502329fc89d0
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>

1 files changed, 0 insertions, 427 deletions

diff --git a/src/quick/scenegraph/util/qsgpainternode.cpp b/src/quick/scenegraph/util/qsgpainternode.cpp
deleted file mode 100644
index a74cf869a4..0000000000
--- a/src/quick/scenegraph/util/qsgpainternode.cpp
+++ /dev/null
@@ -1,427 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
-** Contact: http://www.qt-project.org/legal
-**
-** This file is part of the QtQuick module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL21$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and Digia. For licensing terms and
-** conditions see http://qt.digia.com/licensing. For further information
-** use the contact form at http://qt.digia.com/contact-us.
-**
-** 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 or version 3 as published by the Free
-** Software Foundation and appearing in the file LICENSE.LGPLv21 and
-** LICENSE.LGPLv3 included in the packaging of this file. Please review the
-** following information to ensure the GNU Lesser General Public License
-** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
-** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Digia gives you certain additional
-** rights. These rights are described in the Digia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qsgpainternode_p.h"
-
-#include <QtQuick/private/qquickpainteditem_p.h>
-
-#include <QtQuick/private/qsgcontext_p.h>
-#include <private/qopenglextensions_p.h>
-#include <qopenglframebufferobject.h>
-#include <qopenglfunctions.h>
-#include <qopenglpaintdevice.h>
-#include <qmath.h>
-#include <qpainter.h>
-
-QT_BEGIN_NAMESPACE
-
-#define QT_MINIMUM_DYNAMIC_FBO_SIZE 64U
-
-QSGPainterTexture::QSGPainterTexture()
-    : QSGPlainTexture()
-{
-    m_retain_image = true;
-}
-
-void QSGPainterTexture::bind()
-{
-    if (m_dirty_rect.isNull()) {
-        QSGPlainTexture::bind();
-        return;
-    }
-
-    setImage(m_image);
-    QSGPlainTexture::bind();
-
-    m_dirty_rect = QRect();
-}
-
-QSGPainterNode::QSGPainterNode(QQuickPaintedItem *item)
-    : QSGGeometryNode()
-    , m_preferredRenderTarget(QQuickPaintedItem::Image)
-    , m_actualRenderTarget(QQuickPaintedItem::Image)
-    , m_item(item)
-    , m_fbo(0)
-    , m_multisampledFbo(0)
-    , m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4)
-    , m_texture(0)
-    , m_gl_device(0)
-    , m_dirtyContents(false)
-    , m_opaquePainting(false)
-    , m_linear_filtering(false)
-    , m_mipmapping(false)
-    , m_smoothPainting(false)
-    , m_extensionsChecked(false)
-    , m_multisamplingSupported(false)
-    , m_fastFBOResizing(false)
-    , m_fillColor(Qt::transparent)
-    , m_contentsScale(1.0)
-    , m_dirtyGeometry(false)
-    , m_dirtyRenderTarget(false)
-    , m_dirtyTexture(false)
-{
-    m_context = static_cast<QQuickPaintedItemPrivate *>(QObjectPrivate::get(item))->sceneGraphRenderContext();
-
-    setMaterial(&m_materialO);
-    setOpaqueMaterial(&m_material);
-    setGeometry(&m_geometry);
-
-#ifdef QSG_RUNTIME_DESCRIPTION
-    qsgnode_set_description(this, QString::fromLatin1("QQuickPaintedItem(%1):%2").arg(QString::fromLatin1(item->metaObject()->className())).arg(item->objectName()));
-#endif
-}
-
-QSGPainterNode::~QSGPainterNode()
-{
-    delete m_texture;
-    delete m_fbo;
-    delete m_multisampledFbo;
-    delete m_gl_device;
-}
-
-void QSGPainterNode::paint()
-{
-    QRect dirtyRect = m_dirtyRect.isNull() ? QRect(0, 0, m_size.width(), m_size.height()) : m_dirtyRect;
-
-    QPainter painter;
-    if (m_actualRenderTarget == QQuickPaintedItem::Image) {
-        if (m_image.isNull())
-            return;
-        painter.begin(&m_image);
-    } else {
-        if (!m_gl_device) {
-            m_gl_device = new QOpenGLPaintDevice(m_fboSize);
-            m_gl_device->setPaintFlipped(true);
-        }
-
-        if (m_multisampledFbo)
-            m_multisampledFbo->bind();
-        else
-            m_fbo->bind();
-
-        painter.begin(m_gl_device);
-    }
-
-    if (m_smoothPainting) {
-        painter.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::SmoothPixmapTransform);
-    }
-
-    painter.scale(m_contentsScale, m_contentsScale);
-
-    QRect sclip(qFloor(dirtyRect.x()/m_contentsScale),
-                qFloor(dirtyRect.y()/m_contentsScale),
-                qCeil(dirtyRect.width()/m_contentsScale+dirtyRect.x()/m_contentsScale-qFloor(dirtyRect.x()/m_contentsScale)),
-                qCeil(dirtyRect.height()/m_contentsScale+dirtyRect.y()/m_contentsScale-qFloor(dirtyRect.y()/m_contentsScale)));
-
-    if (!m_dirtyRect.isNull())
-        painter.setClipRect(sclip);
-
-    painter.setCompositionMode(QPainter::CompositionMode_Source);
-    painter.fillRect(sclip, m_fillColor);
-    painter.setCompositionMode(QPainter::CompositionMode_SourceOver);
-
-    m_item->paint(&painter);
-    painter.end();
-
-    if (m_actualRenderTarget == QQuickPaintedItem::Image) {
-        m_texture->setImage(m_image);
-        m_texture->setDirtyRect(dirtyRect);
-    } else if (m_multisampledFbo) {
-        QOpenGLFramebufferObject::blitFramebuffer(m_fbo, dirtyRect, m_multisampledFbo, dirtyRect);
-    }
-
-    if (m_multisampledFbo)
-        m_multisampledFbo->release();
-    else if (m_fbo)
-        m_fbo->release();
-
-    m_dirtyRect = QRect();
-}
-
-void QSGPainterNode::update()
-{
-    if (m_dirtyRenderTarget)
-        updateRenderTarget();
-    if (m_dirtyGeometry)
-        updateGeometry();
-    if (m_dirtyTexture)
-        updateTexture();
-
-    if (m_dirtyContents)
-        paint();
-
-    m_dirtyGeometry = false;
-    m_dirtyRenderTarget = false;
-    m_dirtyTexture = false;
-    m_dirtyContents = false;
-}
-
-void QSGPainterNode::updateTexture()
-{
-    m_texture->setHasAlphaChannel(!m_opaquePainting);
-    m_material.setTexture(m_texture);
-    m_materialO.setTexture(m_texture);
-
-    markDirty(DirtyMaterial);
-}
-
-void QSGPainterNode::updateGeometry()
-{
-    QRectF source;
-    if (m_actualRenderTarget == QQuickPaintedItem::Image)
-        source = QRectF(0, 0, 1, 1);
-    else
-        source = QRectF(0, 0, qreal(m_size.width()) / m_fboSize.width(), qreal(m_size.height()) / m_fboSize.height());
-    QRectF dest(0, 0, m_size.width(), m_size.height());
-    if (m_actualRenderTarget == QQuickPaintedItem::InvertedYFramebufferObject)
-        dest = QRectF(QPointF(0, m_size.height()), QPointF(m_size.width(), 0));
-    QSGGeometry::updateTexturedRectGeometry(&m_geometry,
-                                            dest,
-                                            source);
-    markDirty(DirtyGeometry);
-}
-
-void QSGPainterNode::updateRenderTarget()
-{
-    if (!m_extensionsChecked) {
-        const QSet<QByteArray> extensions = m_context->openglContext()->extensions();
-        m_multisamplingSupported = extensions.contains(QByteArrayLiteral("GL_EXT_framebuffer_multisample"))
-            && extensions.contains(QByteArrayLiteral("GL_EXT_framebuffer_blit"));
-        m_extensionsChecked = true;
-    }
-
-    m_dirtyContents = true;
-
-    QQuickPaintedItem::RenderTarget oldTarget = m_actualRenderTarget;
-    if (m_preferredRenderTarget == QQuickPaintedItem::Image) {
-        m_actualRenderTarget = QQuickPaintedItem::Image;
-    } else {
-        if (!m_multisamplingSupported && m_smoothPainting)
-            m_actualRenderTarget = QQuickPaintedItem::Image;
-        else
-            m_actualRenderTarget = m_preferredRenderTarget;
-    }
-    if (oldTarget != m_actualRenderTarget) {
-        m_image = QImage();
-        delete m_fbo;
-        delete m_multisampledFbo;
-        delete m_gl_device;
-        m_fbo = m_multisampledFbo = 0;
-        m_gl_device = 0;
-    }
-
-    if (m_actualRenderTarget == QQuickPaintedItem::FramebufferObject ||
-            m_actualRenderTarget == QQuickPaintedItem::InvertedYFramebufferObject) {
-        const QOpenGLContext *ctx = m_context->openglContext();
-        if (m_fbo && !m_dirtyGeometry && (!ctx->format().samples() || !m_multisamplingSupported))
-            return;
-
-        if (m_fboSize.isEmpty())
-            updateFBOSize();
-
-        delete m_fbo;
-        delete m_multisampledFbo;
-        m_fbo = m_multisampledFbo = 0;
-        if (m_gl_device)
-            m_gl_device->setSize(m_fboSize);
-
-        if (m_smoothPainting && ctx->format().samples() && m_multisamplingSupported) {
-            {
-                QOpenGLFramebufferObjectFormat format;
-                format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
-                format.setSamples(8);
-                m_multisampledFbo = new QOpenGLFramebufferObject(m_fboSize, format);
-            }
-            {
-                QOpenGLFramebufferObjectFormat format;
-                format.setAttachment(QOpenGLFramebufferObject::NoAttachment);
-                m_fbo = new QOpenGLFramebufferObject(m_fboSize, format);
-            }
-        } else {
-            QOpenGLFramebufferObjectFormat format;
-            format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
-            m_fbo = new QOpenGLFramebufferObject(m_fboSize, format);
-        }
-    } else {
-        if (!m_image.isNull() && !m_dirtyGeometry)
-            return;
-
-        m_image = QImage(m_size, QImage::Format_ARGB32_Premultiplied);
-        m_image.fill(Qt::transparent);
-    }
-
-    QSGPainterTexture *texture = new QSGPainterTexture;
-    if (m_actualRenderTarget == QQuickPaintedItem::Image) {
-        texture->setOwnsTexture(true);
-        texture->setTextureSize(m_size);
-    } else {
-        texture->setTextureId(m_fbo->texture());
-        texture->setOwnsTexture(false);
-        texture->setTextureSize(m_fboSize);
-    }
-
-    if (m_texture)
-        delete m_texture;
-
-    texture->setTextureSize(m_size);
-    m_texture = texture;
-}
-
-void QSGPainterNode::updateFBOSize()
-{
-    int fboWidth;
-    int fboHeight;
-    if (m_fastFBOResizing) {
-        fboWidth = qMax(QT_MINIMUM_DYNAMIC_FBO_SIZE, qNextPowerOfTwo(m_size.width() - 1));
-        fboHeight = qMax(QT_MINIMUM_DYNAMIC_FBO_SIZE, qNextPowerOfTwo(m_size.height() - 1));
-    } else {
-        QSize minimumFBOSize = m_context->sceneGraphContext()->minimumFBOSize();
-        fboWidth = qMax(minimumFBOSize.width(), m_size.width());
-        fboHeight = qMax(minimumFBOSize.height(), m_size.height());
-    }
-
-    m_fboSize = QSize(fboWidth, fboHeight);
-}
-
-void QSGPainterNode::setPreferredRenderTarget(QQuickPaintedItem::RenderTarget target)
-{
-    if (m_preferredRenderTarget == target)
-        return;
-
-    m_preferredRenderTarget = target;
-
-    m_dirtyRenderTarget = true;
-    m_dirtyGeometry = true;
-    m_dirtyTexture = true;
-}
-
-void QSGPainterNode::setSize(const QSize &size)
-{
-    if (size == m_size)
-        return;
-
-    m_size = size;
-    updateFBOSize();
-
-    if (m_fbo)
-        m_dirtyRenderTarget = m_fbo->size() != m_fboSize || m_dirtyRenderTarget;
-    else
-        m_dirtyRenderTarget = true;
-    m_dirtyGeometry = true;
-    m_dirtyTexture = true;
-}
-
-void QSGPainterNode::setDirty(const QRect &dirtyRect)
-{
-    m_dirtyContents = true;
-    m_dirtyRect = dirtyRect;
-
-    if (m_mipmapping)
-        m_dirtyTexture = true;
-
-    markDirty(DirtyMaterial);
-}
-
-void QSGPainterNode::setOpaquePainting(bool opaque)
-{
-    if (opaque == m_opaquePainting)
-        return;
-
-    m_opaquePainting = opaque;
-    m_dirtyTexture = true;
-}
-
-void QSGPainterNode::setLinearFiltering(bool linearFiltering)
-{
-    if (linearFiltering == m_linear_filtering)
-        return;
-
-    m_linear_filtering = linearFiltering;
-
-    m_material.setFiltering(linearFiltering ? QSGTexture::Linear : QSGTexture::Nearest);
-    m_materialO.setFiltering(linearFiltering ? QSGTexture::Linear : QSGTexture::Nearest);
-    markDirty(DirtyMaterial);
-}
-
-void QSGPainterNode::setMipmapping(bool mipmapping)
-{
-    if (mipmapping == m_mipmapping)
-        return;
-
-    m_mipmapping = mipmapping;
-    m_material.setMipmapFiltering(mipmapping ? QSGTexture::Linear : QSGTexture::None);
-    m_materialO.setMipmapFiltering(mipmapping ? QSGTexture::Linear : QSGTexture::None);
-    m_dirtyTexture = true;
-}
-
-void QSGPainterNode::setSmoothPainting(bool s)
-{
-    if (s == m_smoothPainting)
-        return;
-
-    m_smoothPainting = s;
-    m_dirtyRenderTarget = true;
-}
-
-void QSGPainterNode::setFillColor(const QColor &c)
-{
-    if (c == m_fillColor)
-        return;
-
-    m_fillColor = c;
-    markDirty(DirtyMaterial);
-}
-
-void QSGPainterNode::setContentsScale(qreal s)
-{
-    if (s == m_contentsScale)
-        return;
-
-    m_contentsScale = s;
-    markDirty(DirtyMaterial);
-}
-
-void QSGPainterNode::setFastFBOResizing(bool dynamic)
-{
-    m_fastFBOResizing = dynamic;
-}
-
-QImage QSGPainterNode::toImage() const
-{
-    if (m_actualRenderTarget == QQuickPaintedItem::Image)
-        return m_image;
-    else
-        return m_fbo->toImage();
-}
-
-QT_END_NAMESPACE