vector3d_sse.cpp - mozsearch

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++ // Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).

++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

++

++ #include "vector3d_sse_p.h"

++

++ #include <private/qsimd_p.h>

++

++ #include "matrix4x4_sse_p.h"

++ #include "vector4d_sse_p.h"

++ #include <QDebug>

++

++ #ifdef __SSE2__

++

++ QT_BEGIN_NAMESPACE

++

++ namespace Qt3DCore {

++

++ QDebug operator<<(QDebug dbg, const Vector3D_SSE &v)

++ {

++     dbg.nospace() << "Vector3D_SSE(" << v.x() << ", " << v.y() << ", " << v.z() << ") ";

++     return dbg;

++ }

++

++ Vector3D_SSE::Vector3D_SSE(const Vector4D_SSE &v)

++ {

++     m_xyzw = _mm_mul_ps(v.m_xyzw, _mm_set_ps(0.0f, 1.0f, 1.0f, 1.0f));

++ }

++

++ Vector3D_SSE Vector3D_SSE::unproject(const Matrix4x4_SSE &modelView, const Matrix4x4_SSE &projection, const QRect &viewport) const

++ {

++     const Matrix4x4_SSE inverse = (projection * modelView).inverted();

++

++     Vector4D_SSE tmp(*this, 1.0f);

++     tmp.setX((tmp.x() - float(viewport.x())) / float(viewport.width()));

++     tmp.setY((tmp.y() - float(viewport.y())) / float(viewport.height()));

++     tmp = tmp * 2.0f - Vector4D_SSE(1.0f, 1.0f, 1.0f, 1.0f);

++

++     Vector4D_SSE obj = inverse * tmp;

++     if (qFuzzyIsNull(obj.w()))

++         obj.setW(1.0f);

++     obj /= obj.w();

++     return Vector3D_SSE(obj);

++ }

++

++ Vector3D_SSE Vector3D_SSE::project(const Matrix4x4_SSE &modelView, const Matrix4x4_SSE &projection, const QRect &viewport) const

++ {

++     Vector4D_SSE tmp(*this, 1.0f);

++     tmp = projection * modelView * tmp;

++     if (qFuzzyIsNull(tmp.w()))

++         tmp.setW(1.0f);

++     tmp /= tmp.w();

++

++     tmp = tmp * 0.5f + Vector4D_SSE(0.5f, 0.5f, 0.5f, 0.5f);

++     tmp.setX(tmp.x() * viewport.width() + viewport.x());

++     tmp.setY(tmp.y() * viewport.height() + viewport.y());

++

++     return Vector3D_SSE(tmp);

++ }

++

++ } // Qt3DCore

++

++ QT_END_NAMESPACE

++

++ #endif // __SSE2__