1// Copyright (C) 2008-2012 NVIDIA Corporation.
2// Copyright (C) 2019 The Qt Company Ltd.
3// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
4
5#include <QtQuick3DRuntimeRender/private/qssgrenderimage_p.h>
6#include <QtQuick/QSGTexture>
7
8QT_BEGIN_NAMESPACE
9
10QSSGRenderImage::QSSGRenderImage(QSSGRenderGraphObject::Type type)
11 : QSSGRenderGraphObject(type)
12{
13 m_flags.setFlag(flag: Flag::Dirty);
14 m_flags.setFlag(flag: Flag::TransformDirty);
15}
16
17QSSGRenderImage::~QSSGRenderImage() = default;
18
19bool QSSGRenderImage::clearDirty()
20{
21 const bool wasDirty = m_flags.testFlag(flag: Flag::Dirty);
22 m_flags.setFlag(flag: Flag::Dirty, on: false);
23 if (m_flags.testFlag(flag: Flag::TransformDirty)) {
24 calculateTextureTransform();
25 return true;
26 }
27 return wasDirty;
28}
29
30void QSSGRenderImage::calculateTextureTransform()
31{
32 m_flags.setFlag(flag: Flag::TransformDirty, on: false);
33
34 m_textureTransform = QMatrix4x4();
35 if (m_flipU) {
36 m_textureTransform *= QMatrix4x4(-1.f, 0.f, 0.f, 1.f,
37 0.f, 1.f, 0.f, 0.f,
38 0.f, 0.f, 1.f, 0.f,
39 0.f, 0.f, 0.f, 1.f);
40 }
41 if (m_flipV) {
42 m_textureTransform *= QMatrix4x4(1.f, 0.f, 0.f, 0.f,
43 0.f, -1.f, 0.f, 1.f,
44 0.f, 0.f, 1.f, 0.f,
45 0.f, 0.f, 0.f, 1.f);
46 }
47
48 QMatrix4x4 pivot;
49 QMatrix4x4 pivot_r;
50 QMatrix4x4 translation;
51 QMatrix4x4 rotation;
52 QMatrix4x4 scale;
53
54 pivot.translate(x: m_pivot.x(), y: m_pivot.y());
55 pivot_r.translate(x: -m_pivot.x(), y: -m_pivot.y());
56 translation.translate(x: m_position.x(), y: m_position.y());
57 scale.scale(x: m_scale.x(), y: m_scale.y());
58 rotation.rotate(angle: m_rotation, vector: QVector3D(0, 0, 1));
59
60 m_textureTransform *= translation;
61 m_textureTransform *= pivot;
62 m_textureTransform *= rotation;
63 m_textureTransform *= scale;
64 m_textureTransform *= pivot_r;
65}
66
67bool QSSGRenderImage::isImageTransformIdentity() const
68{
69 if (m_mappingMode != MappingModes::Normal)
70 return false;
71 return m_textureTransform.isIdentity();
72}
73
74QT_END_NAMESPACE
75

source code of qtquick3d/src/runtimerender/graphobjects/qssgrenderimage.cpp