| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtQuick module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** 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 The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/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 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
| ** https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qsgdefaultpainternode_p.h" |
| |
| #include <QtQuick/private/qquickpainteditem_p.h> |
| |
| #include <QtQuick/private/qsgdefaultrendercontext_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(*(new QSGPainterTexturePrivate)) |
| { |
| m_retain_image = true; |
| } |
| |
| void QSGPainterTexture::bind() |
| { |
| if (m_dirty_rect.isNull()) { |
| QSGPlainTexture::bind(); |
| return; |
| } |
| |
| setImage(m_image); |
| QSGPlainTexture::bind(); |
| |
| m_dirty_rect = QRect(); |
| } |
| |
| void QSGPainterTexturePrivate::updateRhiTexture(QRhi *rhi, QRhiResourceUpdateBatch *resourceUpdates) |
| { |
| Q_Q(QSGPainterTexture); |
| if (!q->m_dirty_rect.isNull()) { |
| q->setImage(q->m_image); |
| q->m_dirty_rect = QRect(); |
| } |
| QSGPlainTexturePrivate::updateRhiTexture(rhi, resourceUpdates); |
| } |
| |
| QSGDefaultPainterNode::QSGDefaultPainterNode(QQuickPaintedItem *item) |
| : QSGPainterNode() |
| , m_preferredRenderTarget(QQuickPaintedItem::Image) |
| , m_actualRenderTarget(QQuickPaintedItem::Image) |
| , m_item(item) |
| , m_fbo(nullptr) |
| , m_multisampledFbo(nullptr) |
| , m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4) |
| , m_texture(nullptr) |
| , m_gl_device(nullptr) |
| , m_fillColor(Qt::transparent) |
| , m_contentsScale(1.0) |
| , 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_dirtyGeometry(false) |
| , m_dirtyRenderTarget(false) |
| , m_dirtyTexture(false) |
| { |
| m_context = static_cast<QSGDefaultRenderContext *>(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 |
| } |
| |
| QSGDefaultPainterNode::~QSGDefaultPainterNode() |
| { |
| delete m_texture; |
| delete m_fbo; |
| delete m_multisampledFbo; |
| delete m_gl_device; |
| } |
| |
| void QSGDefaultPainterNode::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 { |
| Q_ASSERT(!m_context->rhi()); |
| 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); |
| } |
| |
| QRect clipRect; |
| QRect dirtyTextureRect; |
| |
| if (m_contentsScale == 1) { |
| qreal scaleX = m_textureSize.width() / (qreal) m_size.width(); |
| qreal scaleY = m_textureSize.height() / (qreal) m_size.height(); |
| painter.scale(scaleX, scaleY); |
| clipRect = dirtyRect; |
| dirtyTextureRect = QRectF(dirtyRect.x() * scaleX, |
| dirtyRect.y() * scaleY, |
| dirtyRect.width() * scaleX, |
| dirtyRect.height() * scaleY).toAlignedRect(); |
| } else { |
| 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))); |
| clipRect = sclip; |
| dirtyTextureRect = dirtyRect; |
| } |
| |
| // only clip if we were originally updating only a subrect |
| if (!m_dirtyRect.isNull()) { |
| painter.setClipRect(clipRect); |
| } |
| |
| painter.setCompositionMode(QPainter::CompositionMode_Source); |
| painter.fillRect(clipRect, 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(dirtyTextureRect); |
| } else if (m_multisampledFbo) { |
| QOpenGLFramebufferObject::blitFramebuffer(m_fbo, dirtyTextureRect, m_multisampledFbo, dirtyTextureRect); |
| } |
| |
| if (m_multisampledFbo) |
| m_multisampledFbo->release(); |
| else if (m_fbo) |
| m_fbo->release(); |
| |
| m_dirtyRect = QRect(); |
| } |
| |
| void QSGDefaultPainterNode::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 QSGDefaultPainterNode::updateTexture() |
| { |
| m_texture->setHasAlphaChannel(!m_opaquePainting); |
| m_material.setTexture(m_texture); |
| m_materialO.setTexture(m_texture); |
| |
| markDirty(DirtyMaterial); |
| } |
| |
| void QSGDefaultPainterNode::updateGeometry() |
| { |
| QRectF source; |
| if (m_actualRenderTarget == QQuickPaintedItem::Image) |
| source = QRectF(0, 0, 1, 1); |
| else |
| source = QRectF(0, 0, qreal(m_textureSize.width()) / m_fboSize.width(), qreal(m_textureSize.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 QSGDefaultPainterNode::updateRenderTarget() |
| { |
| if (!m_extensionsChecked && !m_context->rhi()) { |
| QOpenGLExtensions *e = static_cast<QOpenGLExtensions *>(QOpenGLContext::currentContext()->functions()); |
| m_multisamplingSupported = e->hasOpenGLExtension(QOpenGLExtensions::FramebufferMultisample) |
| && e->hasOpenGLExtension(QOpenGLExtensions::FramebufferBlit); |
| m_extensionsChecked = true; |
| } |
| |
| m_dirtyContents = true; |
| |
| QQuickPaintedItem::RenderTarget oldTarget = m_actualRenderTarget; |
| if (m_preferredRenderTarget == QQuickPaintedItem::Image) { |
| m_actualRenderTarget = QQuickPaintedItem::Image; |
| } else { |
| // Image is the only option when there is no multisample framebuffer |
| // support and smooth painting is wanted, and when using the RHI. The |
| // latter may change in the future. |
| if ((!m_multisamplingSupported && m_smoothPainting) || m_context->rhi()) |
| 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 = nullptr; |
| m_gl_device = nullptr; |
| } |
| |
| if (m_actualRenderTarget == QQuickPaintedItem::FramebufferObject || |
| m_actualRenderTarget == QQuickPaintedItem::InvertedYFramebufferObject) |
| { |
| Q_ASSERT(!m_context->rhi()); |
| 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 = nullptr; |
| 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_textureSize, QImage::Format_ARGB32_Premultiplied); |
| m_image.fill(Qt::transparent); |
| } |
| |
| QSGPainterTexture *texture = new QSGPainterTexture; |
| if (m_actualRenderTarget == QQuickPaintedItem::Image) { |
| texture->setOwnsTexture(true); |
| texture->setTextureSize(m_textureSize); |
| } else { |
| texture->setTextureId(m_fbo->texture()); |
| texture->setOwnsTexture(false); |
| texture->setTextureSize(m_fboSize); |
| } |
| |
| if (m_texture) |
| delete m_texture; |
| |
| m_texture = texture; |
| } |
| |
| void QSGDefaultPainterNode::updateFBOSize() |
| { |
| int fboWidth; |
| int fboHeight; |
| if (m_fastFBOResizing) { |
| fboWidth = qMax(QT_MINIMUM_DYNAMIC_FBO_SIZE, qNextPowerOfTwo(m_textureSize.width() - 1)); |
| fboHeight = qMax(QT_MINIMUM_DYNAMIC_FBO_SIZE, qNextPowerOfTwo(m_textureSize.height() - 1)); |
| } else { |
| QSize minimumFBOSize = m_context->sceneGraphContext()->minimumFBOSize(); |
| fboWidth = qMax(minimumFBOSize.width(), m_textureSize.width()); |
| fboHeight = qMax(minimumFBOSize.height(), m_textureSize.height()); |
| } |
| |
| m_fboSize = QSize(fboWidth, fboHeight); |
| } |
| |
| void QSGDefaultPainterNode::setPreferredRenderTarget(QQuickPaintedItem::RenderTarget target) |
| { |
| if (m_preferredRenderTarget == target) |
| return; |
| |
| m_preferredRenderTarget = target; |
| |
| m_dirtyRenderTarget = true; |
| m_dirtyGeometry = true; |
| m_dirtyTexture = true; |
| } |
| |
| void QSGDefaultPainterNode::setSize(const QSize &size) |
| { |
| if (size == m_size) |
| return; |
| |
| m_size = size; |
| m_dirtyGeometry = true; |
| } |
| |
| void QSGDefaultPainterNode::setTextureSize(const QSize &size) |
| { |
| if (size == m_textureSize) |
| return; |
| |
| m_textureSize = 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 QSGDefaultPainterNode::setDirty(const QRect &dirtyRect) |
| { |
| m_dirtyContents = true; |
| m_dirtyRect = dirtyRect; |
| |
| if (m_mipmapping) |
| m_dirtyTexture = true; |
| |
| markDirty(DirtyMaterial); |
| } |
| |
| void QSGDefaultPainterNode::setOpaquePainting(bool opaque) |
| { |
| if (opaque == m_opaquePainting) |
| return; |
| |
| m_opaquePainting = opaque; |
| m_dirtyTexture = true; |
| } |
| |
| void QSGDefaultPainterNode::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 QSGDefaultPainterNode::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 QSGDefaultPainterNode::setSmoothPainting(bool s) |
| { |
| if (s == m_smoothPainting) |
| return; |
| |
| m_smoothPainting = s; |
| m_dirtyRenderTarget = true; |
| } |
| |
| void QSGDefaultPainterNode::setFillColor(const QColor &c) |
| { |
| if (c == m_fillColor) |
| return; |
| |
| m_fillColor = c; |
| markDirty(DirtyMaterial); |
| } |
| |
| void QSGDefaultPainterNode::setContentsScale(qreal s) |
| { |
| if (s == m_contentsScale) |
| return; |
| |
| m_contentsScale = s; |
| markDirty(DirtyMaterial); |
| } |
| |
| void QSGDefaultPainterNode::setFastFBOResizing(bool fastResizing) |
| { |
| if (m_fastFBOResizing == fastResizing) |
| return; |
| |
| m_fastFBOResizing = fastResizing; |
| updateFBOSize(); |
| |
| if ((m_preferredRenderTarget == QQuickPaintedItem::FramebufferObject |
| || m_preferredRenderTarget == QQuickPaintedItem::InvertedYFramebufferObject) |
| && (!m_fbo || (m_fbo && m_fbo->size() != m_fboSize))) { |
| m_dirtyRenderTarget = true; |
| m_dirtyGeometry = true; |
| m_dirtyTexture = true; |
| } |
| } |
| |
| QImage QSGDefaultPainterNode::toImage() const |
| { |
| if (m_actualRenderTarget == QQuickPaintedItem::Image) |
| return m_image; |
| else |
| return m_fbo->toImage(); |
| } |
| |
| QT_END_NAMESPACE |
