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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtGui 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QBACKINGSTOREDEFAULTCOMPOSITOR_P_H
#define QBACKINGSTOREDEFAULTCOMPOSITOR_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <qpa/qplatformbackingstore.h>
#include <QtGui/private/qrhi_p.h>
QT_BEGIN_NAMESPACE
class QBackingStoreDefaultCompositor
{
public:
~QBackingStoreDefaultCompositor();
void reset();
QRhiTexture *toTexture(const QPlatformBackingStore *backingStore,
QRhi *rhi,
QRhiResourceUpdateBatch *resourceUpdates,
const QRegion &dirtyRegion,
QPlatformBackingStore::TextureFlags *flags) const;
QPlatformBackingStore::FlushResult flush(QPlatformBackingStore *backingStore,
QRhi *rhi,
QRhiSwapChain *swapchain,
QWindow *window,
const QRegion ®ion,
const QPoint &offset,
QPlatformTextureList *textures,
bool translucentBackground);
private:
void ensureResources(QRhiSwapChain *swapchain, QRhiResourceUpdateBatch *resourceUpdates);
QRhiTexture *toTexture(const QImage &image,
QRhi *rhi,
QRhiResourceUpdateBatch *resourceUpdates,
const QRegion &dirtyRegion,
QPlatformBackingStore::TextureFlags *flags) const;
mutable QRhi *m_rhi = nullptr;
mutable QRhiTexture *m_texture = nullptr;
QRhiBuffer *m_vbuf = nullptr;
QRhiSampler *m_sampler = nullptr;
QRhiGraphicsPipeline *m_psNoBlend = nullptr;
QRhiGraphicsPipeline *m_psBlend = nullptr;
QRhiGraphicsPipeline *m_psPremulBlend = nullptr;
struct PerQuadData {
QRhiBuffer *ubuf = nullptr;
// All srbs are layout-compatible.
QRhiShaderResourceBindings *srb = nullptr;
QRhiTexture *lastUsedTexture = nullptr;
bool isValid() const { return ubuf && srb; }
void reset() {
delete ubuf;
ubuf = nullptr;
delete srb;
srb = nullptr;
lastUsedTexture = nullptr;
}
};
PerQuadData m_widgetQuadData;
QVarLengthArray<PerQuadData, 8> m_textureQuadData;
PerQuadData createPerQuadData(QRhiTexture *texture);
void updatePerQuadData(PerQuadData *d, QRhiTexture *texture);
void updateUniforms(PerQuadData *d, QRhiResourceUpdateBatch *resourceUpdates,
const QMatrix4x4 &target, const QMatrix3x3 &source, bool needsRedBlueSwap);
};
QT_END_NAMESPACE
#endif // QBACKINGSTOREDEFAULTCOMPOSITOR_P_H
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