summaryrefslogtreecommitdiffstats
path: root/src/extras/defaults/qphongmaterial.cpp
blob: f9c51bae8d408449565fb820c77f49f0e847f74a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
/****************************************************************************
**
** 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 "qphongmaterial.h"
#include "qphongmaterial_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 <QUrl>
#include <QVector3D>
#include <QVector4D>

QT_BEGIN_NAMESPACE

using namespace Qt3DRender;

namespace Qt3DExtras {

QPhongMaterialPrivate::QPhongMaterialPrivate()
    : 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_phongGL3Technique(new QTechnique())
    , m_phongGL2Technique(new QTechnique())
    , m_phongES2Technique(new QTechnique())
    , m_phongGL3RenderPass(new QRenderPass())
    , m_phongGL2RenderPass(new QRenderPass())
    , m_phongES2RenderPass(new QRenderPass())
    , m_phongGL3Shader(new QShaderProgram())
    , m_phongGL2ES2Shader(new QShaderProgram())
    , m_filterKey(new QFilterKey)
{
}

void QPhongMaterialPrivate::init()
{
    connect(m_ambientParameter, &Qt3DRender::QParameter::valueChanged,
            this, &QPhongMaterialPrivate::handleAmbientChanged);
    connect(m_diffuseParameter, &Qt3DRender::QParameter::valueChanged,
            this, &QPhongMaterialPrivate::handleDiffuseChanged);
    connect(m_specularParameter, &Qt3DRender::QParameter::valueChanged,
            this, &QPhongMaterialPrivate::handleSpecularChanged);
    connect(m_shininessParameter, &Qt3DRender::QParameter::valueChanged,
            this, &QPhongMaterialPrivate::handleShininessChanged);


    m_phongGL3Shader->setVertexShaderCode(QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/gl3/phong.vert"))));
    m_phongGL3Shader->setFragmentShaderCode(QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/gl3/phong.frag"))));
    m_phongGL2ES2Shader->setVertexShaderCode(QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/es2/phong.vert"))));
    m_phongGL2ES2Shader->setFragmentShaderCode(QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/es2/phong.frag"))));

    m_phongGL3Technique->graphicsApiFilter()->setApi(QGraphicsApiFilter::OpenGL);
    m_phongGL3Technique->graphicsApiFilter()->setMajorVersion(3);
    m_phongGL3Technique->graphicsApiFilter()->setMinorVersion(1);
    m_phongGL3Technique->graphicsApiFilter()->setProfile(QGraphicsApiFilter::CoreProfile);

    m_phongGL2Technique->graphicsApiFilter()->setApi(QGraphicsApiFilter::OpenGL);
    m_phongGL2Technique->graphicsApiFilter()->setMajorVersion(2);
    m_phongGL2Technique->graphicsApiFilter()->setMinorVersion(0);
    m_phongGL2Technique->graphicsApiFilter()->setProfile(QGraphicsApiFilter::NoProfile);

    m_phongES2Technique->graphicsApiFilter()->setApi(QGraphicsApiFilter::OpenGLES);
    m_phongES2Technique->graphicsApiFilter()->setMajorVersion(2);
    m_phongES2Technique->graphicsApiFilter()->setMinorVersion(0);
    m_phongES2Technique->graphicsApiFilter()->setProfile(QGraphicsApiFilter::NoProfile);

    m_phongGL3RenderPass->setShaderProgram(m_phongGL3Shader);
    m_phongGL2RenderPass->setShaderProgram(m_phongGL2ES2Shader);
    m_phongES2RenderPass->setShaderProgram(m_phongGL2ES2Shader);

    m_phongGL3Technique->addRenderPass(m_phongGL3RenderPass);
    m_phongGL2Technique->addRenderPass(m_phongGL2RenderPass);
    m_phongES2Technique->addRenderPass(m_phongES2RenderPass);

    Q_Q(QPhongMaterial);
    m_filterKey->setParent(q);
    m_filterKey->setName(QStringLiteral("renderingStyle"));
    m_filterKey->setValue(QStringLiteral("forward"));

    m_phongGL3Technique->addFilterKey(m_filterKey);
    m_phongGL2Technique->addFilterKey(m_filterKey);
    m_phongES2Technique->addFilterKey(m_filterKey);

    m_phongEffect->addTechnique(m_phongGL3Technique);
    m_phongEffect->addTechnique(m_phongGL2Technique);
    m_phongEffect->addTechnique(m_phongES2Technique);

    m_phongEffect->addParameter(m_ambientParameter);
    m_phongEffect->addParameter(m_diffuseParameter);
    m_phongEffect->addParameter(m_specularParameter);
    m_phongEffect->addParameter(m_shininessParameter);

    q->setEffect(m_phongEffect);
}

void QPhongMaterialPrivate::handleAmbientChanged(const QVariant &var)
{
    Q_Q(QPhongMaterial);
    emit q->ambientChanged(var.value<QColor>());
}

void QPhongMaterialPrivate::handleDiffuseChanged(const QVariant &var)
{
    Q_Q(QPhongMaterial);
    emit q->diffuseChanged(var.value<QColor>());
}

void QPhongMaterialPrivate::handleSpecularChanged(const QVariant &var)
{
    Q_Q(QPhongMaterial);
    emit q->specularChanged(var.value<QColor>());
}

void QPhongMaterialPrivate::handleShininessChanged(const QVariant &var)
{
    Q_Q(QPhongMaterial);
    emit q->shininessChanged(var.toFloat());
}

/*!
    \class Qt3DRender::QPhongMaterial
    \brief The QPhongMaterial class provides a default implementation of the phong lighting effect.
    \inmodule Qt3DRender
    \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.
    \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::QPhongMaterial::QPhongMaterial(Qt3DCore::QNode *parent)

    Constructs a new QPhongMaterial instance with parent object \a parent.
*/
QPhongMaterial::QPhongMaterial(QNode *parent)
    : QMaterial(*new QPhongMaterialPrivate, parent)
{
    Q_D(QPhongMaterial);
    d->init();
}

/*!
   \fn Qt3DRender::QPhongMaterial::~QPhongMaterial()

   Destroys the QPhongMaterial.
*/
QPhongMaterial::~QPhongMaterial()
{
}

/*!
    \property Qt3DRender::QPhongMaterial::ambient

    Holds the ambient color.
*/
QColor QPhongMaterial::ambient() const
{
    Q_D(const QPhongMaterial);
    return d->m_ambientParameter->value().value<QColor>();
}

/*!
    \property Qt3DRender::QPhongMaterial::diffuse

    Holds the diffuse color.
*/
QColor QPhongMaterial::diffuse() const
{
    Q_D(const QPhongMaterial);
    return d->m_diffuseParameter->value().value<QColor>();
}

/*!
    \property Qt3DRender::QPhongMaterial::specular

    Holds the specular color.
*/
QColor QPhongMaterial::specular() const
{
    Q_D(const QPhongMaterial);
    return d->m_specularParameter->value().value<QColor>();
}

/*!
    \property Qt3DRender::QPhongMaterial::shininess

    Holds the shininess exponent.
*/
float QPhongMaterial::shininess() const
{
    Q_D(const QPhongMaterial);
    return d->m_shininessParameter->value().toFloat();
}

void QPhongMaterial::setAmbient(const QColor &ambient)
{
    Q_D(QPhongMaterial);
    d->m_ambientParameter->setValue(ambient);
}

void QPhongMaterial::setDiffuse(const QColor &diffuse)
{
    Q_D(QPhongMaterial);
    d->m_diffuseParameter->setValue(diffuse);
}

void QPhongMaterial::setSpecular(const QColor &specular)
{
    Q_D(QPhongMaterial);
    d->m_specularParameter->setValue(specular);
}

void QPhongMaterial::setShininess(float shininess)
{
    Q_D(QPhongMaterial);
    d->m_shininessParameter->setValue(shininess);
}

} // namespace Qt3DExtras

QT_END_NAMESPACE