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Diffstat (limited to 'src/platformsupport/platformcompositor/qopenglcompositorbackingstore.cpp')
| -rw-r--r-- | src/platformsupport/platformcompositor/qopenglcompositorbackingstore.cpp | 292 |
1 files changed, 0 insertions, 292 deletions
diff --git a/src/platformsupport/platformcompositor/qopenglcompositorbackingstore.cpp b/src/platformsupport/platformcompositor/qopenglcompositorbackingstore.cpp deleted file mode 100644 index 40400e2a19..0000000000 --- a/src/platformsupport/platformcompositor/qopenglcompositorbackingstore.cpp +++ /dev/null @@ -1,292 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2017 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the plugins 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 <QtGui/QOpenGLContext> -#include <QtGui/QWindow> -#include <QtGui/QPainter> -#include <QtGui/QOffscreenSurface> -#include <qpa/qplatformbackingstore.h> -#include <private/qwindow_p.h> - -#include "qopenglcompositorbackingstore_p.h" -#include "qopenglcompositor_p.h" - -#ifndef GL_UNPACK_ROW_LENGTH -#define GL_UNPACK_ROW_LENGTH 0x0CF2 -#endif - -QT_BEGIN_NAMESPACE - -/*! - \class QOpenGLCompositorBackingStore - \brief A backing store implementation for OpenGL - \since 5.4 - \internal - \ingroup qpa - - This implementation uploads raster-rendered widget windows into - textures. It is meant to be used with QOpenGLCompositor that - composites the textures onto a single native window using OpenGL. - This means that multiple top-level widgets are supported without - creating actual native windows for each of them. - - \note It is important to call notifyComposited() from the - corresponding platform window's endCompositing() callback - (inherited from QOpenGLCompositorWindow). - - \note When implementing QOpenGLCompositorWindow::textures() for - windows of type RasterSurface or RasterGLSurface, simply return - the list provided by this class' textures(). -*/ - -QOpenGLCompositorBackingStore::QOpenGLCompositorBackingStore(QWindow *window) - : QPlatformBackingStore(window), - m_window(window), - m_bsTexture(0), - m_bsTextureContext(0), - m_textures(new QPlatformTextureList), - m_lockedWidgetTextures(0) -{ -} - -QOpenGLCompositorBackingStore::~QOpenGLCompositorBackingStore() -{ - if (m_bsTexture) { - QOpenGLContext *ctx = QOpenGLContext::currentContext(); - // With render-to-texture-widgets QWidget makes sure the TLW's shareContext() is - // made current before destroying backingstores. That is however not the case for - // windows with regular widgets only. - QScopedPointer<QOffscreenSurface> tempSurface; - if (!ctx) { - ctx = QOpenGLCompositor::instance()->context(); - tempSurface.reset(new QOffscreenSurface); - tempSurface->setFormat(ctx->format()); - tempSurface->create(); - ctx->makeCurrent(tempSurface.data()); - } - - if (m_bsTextureContext && ctx->shareGroup() == m_bsTextureContext->shareGroup()) - glDeleteTextures(1, &m_bsTexture); - else - qWarning("QOpenGLCompositorBackingStore: Texture is not valid in the current context"); - - if (tempSurface) - ctx->doneCurrent(); - } - - delete m_textures; // this does not actually own any GL resources -} - -QPaintDevice *QOpenGLCompositorBackingStore::paintDevice() -{ - return &m_image; -} - -void QOpenGLCompositorBackingStore::updateTexture() -{ - if (!m_bsTexture) { - m_bsTextureContext = QOpenGLContext::currentContext(); - Q_ASSERT(m_bsTextureContext); - glGenTextures(1, &m_bsTexture); - glBindTexture(GL_TEXTURE_2D, m_bsTexture); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, m_image.width(), m_image.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, 0); - } else { - glBindTexture(GL_TEXTURE_2D, m_bsTexture); - } - - if (!m_dirty.isNull()) { - QRegion fixed; - QRect imageRect = m_image.rect(); - - QOpenGLContext *ctx = QOpenGLContext::currentContext(); - if (!ctx->isOpenGLES() || ctx->format().majorVersion() >= 3) { - for (const QRect &rect : m_dirty) { - QRect r = imageRect & rect; - glPixelStorei(GL_UNPACK_ROW_LENGTH, m_image.width()); - glTexSubImage2D(GL_TEXTURE_2D, 0, r.x(), r.y(), r.width(), r.height(), GL_RGBA, GL_UNSIGNED_BYTE, - m_image.constScanLine(r.y()) + r.x() * 4); - glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); - } - } else { - for (const QRect &rect : m_dirty) { - // intersect with image rect to be sure - QRect r = imageRect & rect; - - // if the rect is wide enough it's cheaper to just - // extend it instead of doing an image copy - if (r.width() >= imageRect.width() / 2) { - r.setX(0); - r.setWidth(imageRect.width()); - } - - fixed |= r; - } - for (const QRect &rect : fixed) { - // if the sub-rect is full-width we can pass the image data directly to - // OpenGL instead of copying, since there's no gap between scanlines - if (rect.width() == imageRect.width()) { - glTexSubImage2D(GL_TEXTURE_2D, 0, 0, rect.y(), rect.width(), rect.height(), GL_RGBA, GL_UNSIGNED_BYTE, - m_image.constScanLine(rect.y())); - } else { - glTexSubImage2D(GL_TEXTURE_2D, 0, rect.x(), rect.y(), rect.width(), rect.height(), GL_RGBA, GL_UNSIGNED_BYTE, - m_image.copy(rect).constBits()); - } - } - } - - m_dirty = QRegion(); - } -} - -void QOpenGLCompositorBackingStore::flush(QWindow *window, const QRegion ®ion, const QPoint &offset) -{ - // Called for ordinary raster windows. - - Q_UNUSED(region); - Q_UNUSED(offset); - - QOpenGLCompositor *compositor = QOpenGLCompositor::instance(); - QOpenGLContext *dstCtx = compositor->context(); - Q_ASSERT(dstCtx); - - QWindow *dstWin = compositor->targetWindow(); - if (!dstWin) - return; - - dstCtx->makeCurrent(dstWin); - updateTexture(); - m_textures->clear(); - m_textures->appendTexture(nullptr, m_bsTexture, window->geometry()); - - compositor->update(); -} - -void QOpenGLCompositorBackingStore::composeAndFlush(QWindow *window, const QRegion ®ion, const QPoint &offset, - QPlatformTextureList *textures, - bool translucentBackground) -{ - // QOpenGLWidget/QQuickWidget content provided as textures. The raster content goes on top. - - Q_UNUSED(region); - Q_UNUSED(offset); - Q_UNUSED(translucentBackground); - - QOpenGLCompositor *compositor = QOpenGLCompositor::instance(); - QOpenGLContext *dstCtx = compositor->context(); - Q_ASSERT(dstCtx); // setTarget() must have been called before, e.g. from QEGLFSWindow - - // The compositor's context and the context to which QOpenGLWidget/QQuickWidget - // textures belong are not the same. They share resources, though. - Q_ASSERT(qt_window_private(window)->shareContext()->shareGroup() == dstCtx->shareGroup()); - - QWindow *dstWin = compositor->targetWindow(); - if (!dstWin) - return; - - dstCtx->makeCurrent(dstWin); - - QWindowPrivate::get(window)->lastComposeTime.start(); - - m_textures->clear(); - for (int i = 0; i < textures->count(); ++i) - m_textures->appendTexture(textures->source(i), textures->textureId(i), textures->geometry(i), - textures->clipRect(i), textures->flags(i)); - - updateTexture(); - m_textures->appendTexture(nullptr, m_bsTexture, window->geometry()); - - textures->lock(true); - m_lockedWidgetTextures = textures; - - compositor->update(); -} - -void QOpenGLCompositorBackingStore::notifyComposited() -{ - if (m_lockedWidgetTextures) { - QPlatformTextureList *textureList = m_lockedWidgetTextures; - m_lockedWidgetTextures = 0; // may reenter so null before unlocking - textureList->lock(false); - } -} - -void QOpenGLCompositorBackingStore::beginPaint(const QRegion ®ion) -{ - m_dirty |= region; - - if (m_image.hasAlphaChannel()) { - QPainter p(&m_image); - p.setCompositionMode(QPainter::CompositionMode_Source); - for (const QRect &r : region) - p.fillRect(r, Qt::transparent); - } -} - -void QOpenGLCompositorBackingStore::resize(const QSize &size, const QRegion &staticContents) -{ - Q_UNUSED(staticContents); - - QOpenGLCompositor *compositor = QOpenGLCompositor::instance(); - QOpenGLContext *dstCtx = compositor->context(); - QWindow *dstWin = compositor->targetWindow(); - if (!dstWin) - return; - - m_image = QImage(size, QImage::Format_RGBA8888); - - m_window->create(); - - dstCtx->makeCurrent(dstWin); - if (m_bsTexture) { - glDeleteTextures(1, &m_bsTexture); - m_bsTexture = 0; - m_bsTextureContext = nullptr; - } -} - -QImage QOpenGLCompositorBackingStore::toImage() const -{ - return m_image; -} - -QT_END_NAMESPACE |