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// Copyright (C) 2008-2012 NVIDIA Corporation.
// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QtQuick3DRuntimeRender/private/qssgrenderimage_p.h>
#include <QtQuick/QSGTexture>
QT_BEGIN_NAMESPACE
QSSGRenderImage::QSSGRenderImage(QSSGRenderGraphObject::Type type)
: QSSGRenderGraphObject(type, FlagT(QSSGRenderGraphObject::Flags::HasGraphicsResources))
{
m_flags.setFlag(Flag::Dirty);
m_flags.setFlag(Flag::TransformDirty);
}
QSSGRenderImage::~QSSGRenderImage() = default;
bool QSSGRenderImage::clearDirty()
{
const bool wasDirty = m_flags.testFlag(Flag::Dirty);
m_flags.setFlag(Flag::Dirty, false);
if (m_flags.testFlag(Flag::TransformDirty)) {
calculateTextureTransform();
return true;
}
return wasDirty;
}
void QSSGRenderImage::calculateTextureTransform()
{
m_flags.setFlag(Flag::TransformDirty, false);
m_textureTransform = QMatrix4x4();
if (m_flipU) {
m_textureTransform *= QMatrix4x4(-1.f, 0.f, 0.f, 1.f,
0.f, 1.f, 0.f, 0.f,
0.f, 0.f, 1.f, 0.f,
0.f, 0.f, 0.f, 1.f);
}
if (m_flipV) {
m_textureTransform *= QMatrix4x4(1.f, 0.f, 0.f, 0.f,
0.f, -1.f, 0.f, 1.f,
0.f, 0.f, 1.f, 0.f,
0.f, 0.f, 0.f, 1.f);
}
QMatrix4x4 pivot;
QMatrix4x4 pivot_r;
QMatrix4x4 translation;
QMatrix4x4 rotation;
QMatrix4x4 scale;
pivot.translate(m_pivot.x(), m_pivot.y());
pivot_r.translate(-m_pivot.x(), -m_pivot.y());
translation.translate(m_position.x(), m_position.y());
scale.scale(m_scale.x(), m_scale.y());
rotation.rotate(m_rotation, QVector3D(0, 0, 1));
m_textureTransform *= translation;
m_textureTransform *= pivot;
m_textureTransform *= rotation;
m_textureTransform *= scale;
m_textureTransform *= pivot_r;
}
bool QSSGRenderImage::isImageTransformIdentity() const
{
if (m_mappingMode != MappingModes::Normal)
return false;
return m_textureTransform.isIdentity();
}
QT_END_NAMESPACE
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