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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qsgdefaultpainternode_p.h"
#include <QtQuick/private/qquickpainteditem_p.h>
#include <QtQuick/private/qsgdefaultrendercontext_p.h>
#include <QtQuick/private/qsgcontext_p.h>
#include <qmath.h>
#include <qpainter.h>
#if QT_CONFIG(opengl)
#include <private/qopenglextensions_p.h>
#include <rhi/qrhi.h>
#endif
QT_BEGIN_NAMESPACE
#define QT_MINIMUM_DYNAMIC_FBO_SIZE 64U
QSGPainterTexture::QSGPainterTexture()
: QSGPlainTexture(*(new QSGPlainTexturePrivate(this)))
{
m_retain_image = true;
}
void QSGPainterTexture::commitTextureOperations(QRhi *rhi, QRhiResourceUpdateBatch *resourceUpdates)
{
if (!m_dirty_rect.isNull()) {
setImage(m_image);
m_dirty_rect = QRect();
}
QSGPlainTexture::commitTextureOperations(rhi, resourceUpdates);
}
QSGDefaultPainterNode::QSGDefaultPainterNode(QQuickPaintedItem *item)
: QSGPainterNode()
, m_preferredRenderTarget(QQuickPaintedItem::Image)
, m_actualRenderTarget(QQuickPaintedItem::Image)
, m_item(item)
, m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4)
, m_texture(nullptr)
#if QT_CONFIG(opengl)
, m_fbo(nullptr)
, m_multisampledFbo(nullptr)
, m_gl_device(nullptr)
, m_wrapperTexture(nullptr)
#endif
, m_fillColor(Qt::transparent)
, m_contentsScale(1.0)
, m_dirtyContents(false)
, m_opaquePainting(false)
, m_linear_filtering(false)
, m_mipmapping(false)
, m_smoothPainting(false)
#if QT_CONFIG(opengl)
, m_extensionsChecked(false)
, m_multisamplingSupported(false)
#endif
, 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;
#if QT_CONFIG(opengl)
delete m_wrapperTexture;
delete m_fbo;
delete m_multisampledFbo;
delete m_gl_device;
#endif
}
void QSGDefaultPainterNode::paint()
{
QRect dirtyRect = m_dirtyRect.isNull() ? QRect(0, 0, m_size.width(), m_size.height()) : m_dirtyRect;
QPainter painter;
#if QT_CONFIG(opengl)
if (m_context->rhi()->backend() == QRhi::OpenGLES2 && m_actualRenderTarget != QQuickPaintedItem::Image) {
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);
} else
#endif
{
Q_ASSERT(m_actualRenderTarget == QQuickPaintedItem::Image);
if (m_image.isNull())
return;
// We are not reusing the reference to the image the m_texture, so unset it to avoid detach.
m_texture->setImage(QImage());
painter.begin(&m_image);
}
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);
if (m_fillColor.isValid())
painter.fillRect(clipRect, m_fillColor);
painter.setCompositionMode(QPainter::CompositionMode_SourceOver);
m_item->paint(&painter);
painter.end();
#if QT_CONFIG(opengl)
if (m_context->rhi()->backend() == QRhi::OpenGLES2 && m_actualRenderTarget != QQuickPaintedItem::Image) {
if (m_multisampledFbo) {
QOpenGLFramebufferObject::blitFramebuffer(m_fbo, dirtyTextureRect, m_multisampledFbo, dirtyTextureRect);
m_multisampledFbo->release();
} else if (m_fbo) {
m_fbo->release();
}
} else
#endif
{
m_texture->setImage(m_image);
m_texture->setDirtyRect(dirtyTextureRect);
}
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 QT_CONFIG(opengl)
if (m_context->rhi()->backend() == QRhi::OpenGLES2 && m_actualRenderTarget != QQuickPaintedItem::Image) {
source = QRectF(0, 0, qreal(m_textureSize.width()) / m_fboSize.width(), qreal(m_textureSize.height()) / m_fboSize.height());
} else
#endif
{
source = QRectF(0, 0, 1, 1);
}
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()
{
m_dirtyContents = true;
#if QT_CONFIG(opengl)
if (m_context->rhi()->backend() == QRhi::OpenGLES2) {
if (!m_extensionsChecked) {
QOpenGLExtensions *e = static_cast<QOpenGLExtensions *>(QOpenGLContext::currentContext()->functions());
m_multisamplingSupported = e->hasOpenGLExtension(QOpenGLExtensions::FramebufferMultisample)
&& e->hasOpenGLExtension(QOpenGLExtensions::FramebufferBlit);
m_extensionsChecked = 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_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)
{
const QOpenGLContext *ctx = static_cast<const QRhiGles2NativeHandles *>(m_context->rhi()->nativeHandles())->context;
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 msaaFormat;
msaaFormat.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
msaaFormat.setSamples(8);
m_multisampledFbo = new QOpenGLFramebufferObject(m_fboSize, msaaFormat);
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_RGBA8888_Premultiplied);
m_image.fill(Qt::transparent);
}
QSGPainterTexture *texture = new QSGPainterTexture;
if (m_actualRenderTarget == QQuickPaintedItem::Image) {
texture->setOwnsTexture(true);
texture->setTextureSize(m_textureSize);
} else {
if (!m_wrapperTexture)
m_wrapperTexture = m_context->rhi()->newTexture(QRhiTexture::RGBA8, m_fboSize);
m_wrapperTexture->createFrom({ m_fbo->texture(), 0 });
texture->setTexture(m_wrapperTexture);
texture->setOwnsTexture(false);
texture->setTextureSize(m_fboSize);
}
if (m_texture)
delete m_texture;
m_texture = texture;
} else
#endif
{
m_actualRenderTarget = QQuickPaintedItem::Image;
if (!m_image.isNull() && !m_dirtyGeometry)
return;
m_image = QImage(m_textureSize, QImage::Format_RGBA8888_Premultiplied);
m_image.fill(Qt::transparent);
if (!m_texture) {
m_texture = new QSGPainterTexture;
m_texture->setOwnsTexture(true);
}
m_texture->setTextureSize(m_textureSize);
}
}
#if QT_CONFIG(opengl)
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);
}
#endif
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;
#if QT_CONFIG(opengl)
if (m_context->rhi()->backend() == QRhi::OpenGLES2) {
updateFBOSize();
if (m_fbo)
m_dirtyRenderTarget = m_fbo->size() != m_fboSize || m_dirtyRenderTarget;
else
m_dirtyRenderTarget = true;
} else
#endif
{
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;
m_dirtyTexture = 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;
#if QT_CONFIG(opengl)
if (m_context->rhi()->backend() == QRhi::OpenGLES2) {
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;
}
}
#endif
}
QImage QSGDefaultPainterNode::toImage() const
{
#if QT_CONFIG(opengl)
if (m_context->rhi()->backend() == QRhi::OpenGLES2 && m_actualRenderTarget != QQuickPaintedItem::Image) {
Q_ASSERT(m_fbo);
return m_fbo->toImage();
} else
#endif
{
Q_ASSERT(m_actualRenderTarget == QQuickPaintedItem::Image);
return m_image;
}
}
QT_END_NAMESPACE