Add a test for qquick3dcamerav5.14.0-alpha1

To check that the dirty flag is properly set when updating various
properties, and that the values are propagated to QSSGRenderCamera.

Change-Id: Ie7194ef41b4a1bf127d796c3fa88d7646548cd92
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

4 files changed, 172 insertions, 0 deletions

diff --git a/tests/auto/auto.pro b/tests/auto/auto.pro
index 7ce97590..28eb527b 100644
--- a/tests/auto/auto.pro
+++ b/tests/auto/auto.pro
@@ -2,4 +2,5 @@ TEMPLATE = subdirs
 SUBDIRS = \
     cmake \
     assetimport \
+    quick3d \
     quick3d_lancelot
diff --git a/tests/auto/quick3d/qquick3dcamera/qquick3dcamera.pro b/tests/auto/quick3d/qquick3dcamera/qquick3dcamera.pro
new file mode 100644
index 00000000..a0699ccf
--- /dev/null
+++ b/tests/auto/quick3d/qquick3dcamera/qquick3dcamera.pro
@@ -0,0 +1,8 @@
+TEMPLATE = app
+
+QT = testlib quick3d-private
+
+requires(qtConfig(private_tests))
+
+CONFIG += testcase
+SOURCES = tst_qquick3dcamera.cpp
diff --git a/tests/auto/quick3d/qquick3dcamera/tst_qquick3dcamera.cpp b/tests/auto/quick3d/qquick3dcamera/tst_qquick3dcamera.cpp
new file mode 100644
index 00000000..e8fcb555
--- /dev/null
+++ b/tests/auto/quick3d/qquick3dcamera/tst_qquick3dcamera.cpp
@@ -0,0 +1,158 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Quick 3D.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** 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 General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) 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.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-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QTest>
+#include <QtQuick3D/private/qquick3dcamera_p.h>
+#include <QtQuick3DRuntimeRender/private/qssgrendercamera_p.h>
+
+class tst_QQuick3DCamera : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void updateSpatialNode();
+};
+
+void tst_QQuick3DCamera::updateSpatialNode()
+{
+    // Work-around to get access to updateSpatialNode
+    class Camera : public QQuick3DCamera
+    {
+    public:
+        using QQuick3DCamera::updateSpatialNode;
+    };
+
+    Camera camera;
+    auto node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(nullptr));
+    const auto originalNode = node; // for comparisons later...
+    QVERIFY(node);
+
+    const float clipNear = 0.2f;
+    camera.setClipNear(clipNear);
+    node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
+    QCOMPARE(originalNode, node);
+    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::CameraDirty));
+    QCOMPARE(clipNear, node->clipNear);
+
+    const float clipFar = 0.4f;
+    camera.setClipFar(clipFar);
+    node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
+    QCOMPARE(originalNode, node);
+    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::CameraDirty));
+    QCOMPARE(clipFar, node->clipFar);
+
+    const float fov = 6.2f;
+    camera.setFieldOfView(fov);
+    node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
+    QCOMPARE(originalNode, node);
+    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::CameraDirty));
+    QCOMPARE(fov, qRadiansToDegrees(node->fov)); // It gets converted inside, so we convert back
+
+    const bool fovHorizontal = !camera.isFieldOfViewHorizontal();
+    camera.setIsFieldOfViewHorizontal(fovHorizontal);
+    node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
+    QCOMPARE(originalNode, node);
+    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::CameraDirty));
+    QCOMPARE(fovHorizontal, node->fovHorizontal);
+
+    // Simple testing of projection mode, only tests flags
+    QVERIFY(!node->flags.testFlag(QSSGRenderNode::Flag::Orthographic));
+    QVERIFY(!node->flags.testFlag(QSSGRenderNode::Flag::CameraFrustumProjection));
+    QVERIFY(!node->flags.testFlag(QSSGRenderNode::Flag::CameraCustomProjection));
+    // Ortho
+    auto projectionMode = QQuick3DCamera::QSSGCameraProjectionMode::Orthographic;
+    camera.setProjectionMode(projectionMode);
+    node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
+    QCOMPARE(originalNode, node);
+    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::CameraDirty));
+    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::Orthographic));
+    QVERIFY(!node->flags.testFlag(QSSGRenderNode::Flag::CameraFrustumProjection));
+    QVERIFY(!node->flags.testFlag(QSSGRenderNode::Flag::CameraCustomProjection));
+    // Frustum
+    projectionMode = QQuick3DCamera::QSSGCameraProjectionMode::Frustum;
+    camera.setProjectionMode(projectionMode);
+    node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
+    QCOMPARE(originalNode, node);
+    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::CameraDirty));
+    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::CameraFrustumProjection));
+    QVERIFY(!node->flags.testFlag(QSSGRenderNode::Flag::Orthographic));
+    QVERIFY(!node->flags.testFlag(QSSGRenderNode::Flag::CameraCustomProjection));
+    // Custom
+    projectionMode = QQuick3DCamera::QSSGCameraProjectionMode::Custom;
+    camera.setProjectionMode(projectionMode);
+    node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
+    QCOMPARE(originalNode, node);
+    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::CameraDirty));
+    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::CameraCustomProjection));
+    QVERIFY(!node->flags.testFlag(QSSGRenderNode::Flag::CameraFrustumProjection));
+    QVERIFY(!node->flags.testFlag(QSSGRenderNode::Flag::Orthographic));
+
+    // Frustum-related setters
+    projectionMode = QQuick3DCamera::QSSGCameraProjectionMode::Frustum;
+    camera.setProjectionMode(projectionMode);
+
+    const float frustumBottom = 0.54f;
+    camera.setFrustumBottom(frustumBottom);
+    const float frustumTop = 0.242f;
+    camera.setFrustumTop(frustumTop);
+    const float frustumLeft = 0.74f;
+    camera.setFrustumLeft(frustumLeft);
+    const float frustumRight = 1.0f;
+    camera.setFrustumRight(frustumRight);
+    node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
+    QCOMPARE(originalNode, node);
+    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::CameraDirty));
+    QCOMPARE(frustumBottom, node->bottom);
+    QCOMPARE(frustumTop, node->top);
+    QCOMPARE(frustumLeft, node->left);
+    QCOMPARE(frustumRight, node->right);
+
+    // Custom-related setters
+    projectionMode = QQuick3DCamera::QSSGCameraProjectionMode::Custom;
+    camera.setProjectionMode(projectionMode);
+
+    // clang-format off
+    const QMatrix4x4 customProjection = {
+        2, 0, 0, 0,
+        0, 4, 0, 0,
+        0, 0, 2, 0,
+        0, 0, 0, 1,
+    };
+    // clang-format on
+    camera.setCustomProjection(customProjection);
+    node = static_cast<QSSGRenderCamera *>(camera.updateSpatialNode(node));
+    QCOMPARE(originalNode, node);
+    QVERIFY(node->flags.testFlag(QSSGRenderNode::Flag::CameraDirty));
+    QCOMPARE(customProjection, node->projection);
+
+}
+
+
+QTEST_APPLESS_MAIN(tst_QQuick3DCamera)
+#include "tst_qquick3dcamera.moc"
diff --git a/tests/auto/quick3d/quick3d.pro b/tests/auto/quick3d/quick3d.pro
new file mode 100644
index 00000000..5ba34839
--- /dev/null
+++ b/tests/auto/quick3d/quick3d.pro
@@ -0,0 +1,5 @@
+TEMPLATE=subdirs
+
+
+qtConfig(private_tests): SUBDIRS += \
+     qquick3dcamera