diff options
Diffstat (limited to 'src/gui/painting/qrhibackingstore.cpp')
-rw-r--r-- | src/gui/painting/qrhibackingstore.cpp | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/gui/painting/qrhibackingstore.cpp b/src/gui/painting/qrhibackingstore.cpp new file mode 100644 index 0000000000..586dfb44a4 --- /dev/null +++ b/src/gui/painting/qrhibackingstore.cpp @@ -0,0 +1,68 @@ +// Copyright (C) 2022 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 "qrhibackingstore_p.h" +#include <private/qimage_p.h> + +QT_BEGIN_NAMESPACE + +QRhiBackingStore::QRhiBackingStore(QWindow *window) + : QRasterBackingStore(window) +{ +} + +QRhiBackingStore::~QRhiBackingStore() +{ +} + +void QRhiBackingStore::flush(QWindow *flushedWindow, const QRegion ®ion, const QPoint &offset) +{ + Q_UNUSED(region); + Q_UNUSED(offset); + + if (flushedWindow->surfaceType() != window()->surfaceType()) { + qWarning() << "Cannot flush child window" << flushedWindow + << "with surface type" << flushedWindow->surfaceType() << ";" + << "Must match" << window()->surfaceType() << "of" << window(); + + // FIXME: Support different surface types by not tying the + // RHI config to the backing store itself (per window config). + return; + } + + if (!rhi()) { + QPlatformBackingStoreRhiConfig rhiConfig; + switch (window()->surfaceType()) { + case QSurface::OpenGLSurface: + rhiConfig.setApi(QPlatformBackingStoreRhiConfig::OpenGL); + break; + case QSurface::MetalSurface: + rhiConfig.setApi(QPlatformBackingStoreRhiConfig::Metal); + break; + default: + Q_UNREACHABLE(); + } + rhiConfig.setEnabled(true); + setRhiConfig(rhiConfig); + } + + static QPlatformTextureList emptyTextureList; + bool translucentBackground = m_image.hasAlphaChannel(); + rhiFlush(flushedWindow, flushedWindow->devicePixelRatio(), + region, offset, &emptyTextureList, translucentBackground); +} + +QImage::Format QRhiBackingStore::format() const +{ + QImage::Format fmt = QRasterBackingStore::format(); + + // With render-to-texture widgets and QRhi-based flushing the backingstore + // image must have an alpha channel. Hence upgrading the format. Matches + // what other platforms (Windows, xcb) do. + if (QImage::toPixelFormat(fmt).alphaUsage() != QPixelFormat::UsesAlpha) + fmt = qt_maybeDataCompatibleAlphaVersion(fmt); + + return fmt; +} + +QT_END_NAMESPACE |