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Diffstat (limited to 'src/extras/defaults/qphongalphamaterial.cpp')
| -rw-r--r-- | src/extras/defaults/qphongalphamaterial.cpp | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/src/extras/defaults/qphongalphamaterial.cpp b/src/extras/defaults/qphongalphamaterial.cpp new file mode 100644 index 000000000..9d80751c5 --- /dev/null +++ b/src/extras/defaults/qphongalphamaterial.cpp @@ -0,0 +1,327 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the Qt3D 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qphongalphamaterial.h" +#include "qphongalphamaterial_p.h" +#include <Qt3DRender/qfilterkey.h> +#include <Qt3DRender/qmaterial.h> +#include <Qt3DRender/qeffect.h> +#include <Qt3DRender/qtechnique.h> +#include <Qt3DRender/qshaderprogram.h> +#include <Qt3DRender/qparameter.h> +#include <Qt3DRender/qrenderpass.h> +#include <Qt3DRender/qgraphicsapifilter.h> +#include <Qt3DRender/qblendequation.h> +#include <Qt3DRender/qblendequationarguments.h> +#include <Qt3DRender/qnodepthmask.h> +#include <QUrl> +#include <QVector3D> +#include <QVector4D> + +QT_BEGIN_NAMESPACE + +using namespace Qt3DRender; + +namespace Qt3DExtras { + +QPhongAlphaMaterialPrivate::QPhongAlphaMaterialPrivate() + : QMaterialPrivate() + , m_phongEffect(new QEffect()) + , m_ambientParameter(new QParameter(QStringLiteral("ka"), QColor::fromRgbF(0.05f, 0.05f, 0.05f, 1.0f))) + , m_diffuseParameter(new QParameter(QStringLiteral("kd"), QColor::fromRgbF(0.7f, 0.7f, 0.7f, 1.0f))) + , m_specularParameter(new QParameter(QStringLiteral("ks"), QColor::fromRgbF(0.01f, 0.01f, 0.01f, 1.0f))) + , m_shininessParameter(new QParameter(QStringLiteral("shininess"), 150.0f)) + , m_alphaParameter(new QParameter(QStringLiteral("alpha"), 0.5f)) + , m_phongAlphaGL3Technique(new QTechnique()) + , m_phongAlphaGL2Technique(new QTechnique()) + , m_phongAlphaES2Technique(new QTechnique()) + , m_phongAlphaGL3RenderPass(new QRenderPass()) + , m_phongAlphaGL2RenderPass(new QRenderPass()) + , m_phongAlphaES2RenderPass(new QRenderPass()) + , m_phongAlphaGL3Shader(new QShaderProgram()) + , m_phongAlphaGL2ES2Shader(new QShaderProgram()) + , m_noDepthMask(new QNoDepthMask()) + , m_blendState(new QBlendEquationArguments()) + , m_blendEquation(new QBlendEquation()) + , m_filterKey(new QFilterKey) +{ +} + +// TODO: Define how lights are properties are set in the shaders. Ideally using a QShaderData +void QPhongAlphaMaterialPrivate::init() +{ + connect(m_ambientParameter, &Qt3DRender::QParameter::valueChanged, + this, &QPhongAlphaMaterialPrivate::handleAmbientChanged); + connect(m_diffuseParameter, &Qt3DRender::QParameter::valueChanged, + this, &QPhongAlphaMaterialPrivate::handleDiffuseChanged); + connect(m_specularParameter, &Qt3DRender::QParameter::valueChanged, + this, &QPhongAlphaMaterialPrivate::handleSpecularChanged); + connect(m_shininessParameter, &Qt3DRender::QParameter::valueChanged, + this, &QPhongAlphaMaterialPrivate::handleShininessChanged); + connect(m_alphaParameter, &Qt3DRender::QParameter::valueChanged, + this, &QPhongAlphaMaterialPrivate::handleAlphaChanged); + + m_phongAlphaGL3Shader->setVertexShaderCode(QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/gl3/phong.vert")))); + m_phongAlphaGL3Shader->setFragmentShaderCode(QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/gl3/phongalpha.frag")))); + m_phongAlphaGL2ES2Shader->setVertexShaderCode(QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/es2/phong.vert")))); + m_phongAlphaGL2ES2Shader->setFragmentShaderCode(QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/es2/phongalpha.frag")))); + + m_phongAlphaGL3Technique->graphicsApiFilter()->setApi(QGraphicsApiFilter::OpenGL); + m_phongAlphaGL3Technique->graphicsApiFilter()->setMajorVersion(3); + m_phongAlphaGL3Technique->graphicsApiFilter()->setMinorVersion(1); + m_phongAlphaGL3Technique->graphicsApiFilter()->setProfile(QGraphicsApiFilter::CoreProfile); + + m_phongAlphaGL2Technique->graphicsApiFilter()->setApi(QGraphicsApiFilter::OpenGL); + m_phongAlphaGL2Technique->graphicsApiFilter()->setMajorVersion(2); + m_phongAlphaGL2Technique->graphicsApiFilter()->setMinorVersion(0); + m_phongAlphaGL2Technique->graphicsApiFilter()->setProfile(QGraphicsApiFilter::NoProfile); + + m_phongAlphaES2Technique->graphicsApiFilter()->setApi(QGraphicsApiFilter::OpenGLES); + m_phongAlphaES2Technique->graphicsApiFilter()->setMajorVersion(2); + m_phongAlphaES2Technique->graphicsApiFilter()->setMinorVersion(0); + m_phongAlphaES2Technique->graphicsApiFilter()->setProfile(QGraphicsApiFilter::NoProfile); + + Q_Q(QPhongAlphaMaterial); + m_filterKey->setParent(q); + m_filterKey->setName(QStringLiteral("renderingStyle")); + m_filterKey->setValue(QStringLiteral("forward")); + + m_phongAlphaGL3Technique->addFilterKey(m_filterKey); + m_phongAlphaGL2Technique->addFilterKey(m_filterKey); + m_phongAlphaES2Technique->addFilterKey(m_filterKey); + + m_blendState->setSourceRgb(QBlendEquationArguments::SourceAlpha); + m_blendState->setDestinationRgb(QBlendEquationArguments::OneMinusSourceAlpha); + m_blendEquation->setBlendFunction(QBlendEquation::Add); + + m_phongAlphaGL3RenderPass->setShaderProgram(m_phongAlphaGL3Shader); + m_phongAlphaGL2RenderPass->setShaderProgram(m_phongAlphaGL2ES2Shader); + m_phongAlphaES2RenderPass->setShaderProgram(m_phongAlphaGL2ES2Shader); + + m_phongAlphaGL3RenderPass->addRenderState(m_noDepthMask); + m_phongAlphaGL3RenderPass->addRenderState(m_blendState); + m_phongAlphaGL3RenderPass->addRenderState(m_blendEquation); + + m_phongAlphaGL2RenderPass->addRenderState(m_noDepthMask); + m_phongAlphaGL2RenderPass->addRenderState(m_blendState); + m_phongAlphaGL2RenderPass->addRenderState(m_blendEquation); + + m_phongAlphaES2RenderPass->addRenderState(m_noDepthMask); + m_phongAlphaES2RenderPass->addRenderState(m_blendState); + m_phongAlphaES2RenderPass->addRenderState(m_blendEquation); + + m_phongAlphaGL3Technique->addRenderPass(m_phongAlphaGL3RenderPass); + m_phongAlphaGL2Technique->addRenderPass(m_phongAlphaGL2RenderPass); + m_phongAlphaES2Technique->addRenderPass(m_phongAlphaES2RenderPass); + + m_phongEffect->addTechnique(m_phongAlphaGL3Technique); + m_phongEffect->addTechnique(m_phongAlphaGL2Technique); + m_phongEffect->addTechnique(m_phongAlphaES2Technique); + + m_phongEffect->addParameter(m_ambientParameter); + m_phongEffect->addParameter(m_diffuseParameter); + m_phongEffect->addParameter(m_specularParameter); + m_phongEffect->addParameter(m_shininessParameter); + m_phongEffect->addParameter(m_alphaParameter); + + q->setEffect(m_phongEffect); +} + +void QPhongAlphaMaterialPrivate::handleAmbientChanged(const QVariant &var) +{ + Q_Q(QPhongAlphaMaterial); + emit q->ambientChanged(var.value<QColor>()); +} + +void QPhongAlphaMaterialPrivate::handleDiffuseChanged(const QVariant &var) +{ + Q_Q(QPhongAlphaMaterial); + emit q->diffuseChanged(var.value<QColor>()); +} + +void QPhongAlphaMaterialPrivate::handleSpecularChanged(const QVariant &var) +{ + Q_Q(QPhongAlphaMaterial); + emit q->specularChanged(var.value<QColor>()); +} + +void QPhongAlphaMaterialPrivate::handleShininessChanged(const QVariant &var) +{ + Q_Q(QPhongAlphaMaterial); + emit q->shininessChanged(var.toFloat()); +} + +void QPhongAlphaMaterialPrivate::handleAlphaChanged(const QVariant &var) +{ + Q_Q(QPhongAlphaMaterial); + emit q->alphaChanged(var.toFloat()); +} + +/*! + \class Qt3DRender::QPhongAlphaMaterial + + \brief The QPhongAlphaMaterial class provides a default implementation of + the phong lighting effect with alpha. + \inmodule Qt3DRenderer + \since 5.5 + + The phong lighting effect is based on the combination of 3 lighting components ambient, diffuse and specular. + The relative strengths of these components is controlled by means of their reflectivity coefficients which are modelled as RGB triplets: + + \list + \li Ambient is the color that is emitted by an object without any other light source. + \li Diffuse is the color that is emitted for rought surface reflections with the lights. + \li Specular is the color emitted for shiny surface reflections with the lights. + \li The shininess of a surface is controlled by a float property. + \li Alpha is the transparency of the surface between 0 (fully transparent) and 1 (opaque). + \endlist + + This material uses an effect with a single render pass approach and performs per fragment lighting. + Techniques are provided for OpenGL 2, OpenGL 3 or above as well as OpenGL ES 2. +*/ + +/*! + \fn Qt3DRender::QPhongAlphaMaterial::QPhongAlphaMaterial(Qt3DCore::QNode *parent) + + Constructs a new QPhongAlphaMaterial instance with parent object \a parent. +*/ +QPhongAlphaMaterial::QPhongAlphaMaterial(QNode *parent) + : QMaterial(*new QPhongAlphaMaterialPrivate, parent) +{ + Q_D(QPhongAlphaMaterial); + d->init(); +} + +/*! + Destroys the QPhongAlphaMaterial. +*/ +QPhongAlphaMaterial::~QPhongAlphaMaterial() +{ +} + +/*! + \property Qt3DRender::QPhongAlphaMaterial::ambient + + Holds the ambient color. +*/ +QColor QPhongAlphaMaterial::ambient() const +{ + Q_D(const QPhongAlphaMaterial); + return d->m_ambientParameter->value().value<QColor>(); +} + +/*! + \property Qt3DRender::QPhongAlphaMaterial::diffuse + + Holds the diffuse color. +*/ +QColor QPhongAlphaMaterial::diffuse() const +{ + Q_D(const QPhongAlphaMaterial); + return d->m_diffuseParameter->value().value<QColor>(); +} + +/*! + \property Qt3DRender::QPhongAlphaMaterial::specular + + Holds the specular color. +*/ +QColor QPhongAlphaMaterial::specular() const +{ + Q_D(const QPhongAlphaMaterial); + return d->m_specularParameter->value().value<QColor>(); +} + +/*! + \property Qt3DRender::QPhongAlphaMaterial::shininess + + Holds the shininess exponent. +*/ +float QPhongAlphaMaterial::shininess() const +{ + Q_D(const QPhongAlphaMaterial); + return d->m_shininessParameter->value().toFloat(); +} + +/*! + \property Qt3DRender::QPhongAlphaMaterial::alpha + + Holds the alpha component of the object which varies between 0 and 1. + + \note: default value is 0.5f +*/ +float QPhongAlphaMaterial::alpha() const +{ + Q_D(const QPhongAlphaMaterial); + return d->m_alphaParameter->value().toFloat(); +} + +void QPhongAlphaMaterial::setAmbient(const QColor &ambient) +{ + Q_D(QPhongAlphaMaterial); + d->m_ambientParameter->setValue(ambient); +} + +void QPhongAlphaMaterial::setDiffuse(const QColor &diffuse) +{ + Q_D(QPhongAlphaMaterial); + d->m_diffuseParameter->setValue(diffuse); +} + +void QPhongAlphaMaterial::setSpecular(const QColor &specular) +{ + Q_D(QPhongAlphaMaterial); + d->m_specularParameter->setValue(specular); +} + +void QPhongAlphaMaterial::setShininess(float shininess) +{ + Q_D(QPhongAlphaMaterial); + d->m_shininessParameter->setValue(shininess); +} + +void QPhongAlphaMaterial::setAlpha(float alpha) +{ + Q_D(QPhongAlphaMaterial); + d->m_alphaParameter->setValue(alpha); +} + +} // namespace Qt3DExtras + +QT_END_NAMESPACE |