| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #include "qsgsoftwarepixmaprenderer_p.h" |
| 5 | #include "qsgsoftwarecontext_p.h" |
| 6 | |
| 7 | #include <QtQuick/QSGSimpleRectNode> |
| 8 | |
| 9 | #include <QElapsedTimer> |
| 10 | |
| 11 | Q_LOGGING_CATEGORY(lcPixmapRenderer, "qt.scenegraph.softwarecontext.pixmapRenderer") |
| 12 | |
| 13 | QT_BEGIN_NAMESPACE |
| 14 | |
| 15 | QSGSoftwarePixmapRenderer::QSGSoftwarePixmapRenderer(QSGRenderContext *context) |
| 16 | : QSGAbstractSoftwareRenderer(context) |
| 17 | { |
| 18 | |
| 19 | } |
| 20 | |
| 21 | QSGSoftwarePixmapRenderer::~QSGSoftwarePixmapRenderer() |
| 22 | { |
| 23 | |
| 24 | } |
| 25 | |
| 26 | void QSGSoftwarePixmapRenderer::renderScene() |
| 27 | { |
| 28 | QSGRenderer::renderScene(); |
| 29 | } |
| 30 | |
| 31 | void QSGSoftwarePixmapRenderer::render() |
| 32 | { |
| 33 | |
| 34 | } |
| 35 | |
| 36 | void QSGSoftwarePixmapRenderer::render(QPaintDevice *target) |
| 37 | { |
| 38 | QElapsedTimer renderTimer; |
| 39 | |
| 40 | // Setup background item |
| 41 | setBackgroundRect(rect: m_projectionRect.normalized(), devicePixelRatio: qreal(1)); |
| 42 | setBackgroundColor(clearColor()); |
| 43 | |
| 44 | renderTimer.start(); |
| 45 | buildRenderList(); |
| 46 | qint64 buildRenderListTime = renderTimer.restart(); |
| 47 | |
| 48 | // Optimize Renderlist |
| 49 | // Right now there is an assumption that when possible the same pixmap will |
| 50 | // be reused. So we can treat it like a backing store in that we can assume |
| 51 | // that when the pixmap is not being resized, the data can be reused. What is |
| 52 | // different though is that everything should be marked as dirty on a resize. |
| 53 | optimizeRenderList(); |
| 54 | qint64 optimizeRenderListTime = renderTimer.restart(); |
| 55 | |
| 56 | if (!isOpaque() && target->devType() == QInternal::Pixmap) { |
| 57 | // This fill here is wasteful, but necessary because it is the only way |
| 58 | // to force a QImage based pixmap to have an alpha channel. |
| 59 | static_cast<QPixmap *>(target)->fill(fillColor: Qt::transparent); |
| 60 | } |
| 61 | |
| 62 | QPainter painter(target); |
| 63 | painter.setRenderHint(hint: QPainter::Antialiasing); |
| 64 | painter.setWindow(m_projectionRect); |
| 65 | auto rc = static_cast<QSGSoftwareRenderContext *>(context()); |
| 66 | QPainter *prevPainter = rc->m_activePainter; |
| 67 | rc->m_activePainter = &painter; |
| 68 | |
| 69 | QRegion paintedRegion = renderNodes(painter: &painter); |
| 70 | qint64 renderTime = renderTimer.elapsed(); |
| 71 | |
| 72 | rc->m_activePainter = prevPainter; |
| 73 | qCDebug(lcPixmapRenderer) << "pixmapRender"<< paintedRegion << buildRenderListTime << optimizeRenderListTime << renderTime; |
| 74 | } |
| 75 | |
| 76 | void QSGSoftwarePixmapRenderer::setProjectionRect(const QRect &projectionRect) |
| 77 | { |
| 78 | m_projectionRect = projectionRect; |
| 79 | } |
| 80 | |
| 81 | QT_END_NAMESPACE |
| 82 |