Default cpp materials + material-cpp example

QDiffuseMapMaterial
QDiffuseSpecularMapMaterial
QNormalDiffuseMapMaterial
QNormalDiffuseAlphaMapMaterial
QNormalDiffuseSpecularMapMaterial

material-cpp is mostly inspired from materials (QML) but nicer :).

Note: there seems to be an issue with qrc and QUrl. The behavior is different
between QML and C++.
-In C++ we need to prefix with have qrc:/ and convert that to :/ (passing :/
directly returns "" when QUrl toString is called)
-From QML no prefix is needed.
-For QImage path, :/ should be used.

Change-Id: Ib56fb9546c95c2872686a46ed048a290ab4a5b6f
Task-number: QTBUG-41548
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 161 insertions, 0 deletions

diff --git a/src/render/defaults/qnormaldiffusemapalphamaterial.cpp b/src/render/defaults/qnormaldiffusemapalphamaterial.cpp
new file mode 100644
index 000000000..fe381b6db
--- /dev/null
+++ b/src/render/defaults/qnormaldiffusemapalphamaterial.cpp
@@ -0,0 +1,161 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qnormaldiffusemapalphamaterial.h"
+#include "qnormaldiffusemapalphamaterial_p.h"
+
+#include <Qt3DRenderer/qeffect.h>
+#include <Qt3DRenderer/qtexture.h>
+#include <Qt3DRenderer/qtechnique.h>
+#include <Qt3DRenderer/qparameter.h>
+#include <Qt3DRenderer/qshaderprogram.h>
+#include <Qt3DRenderer/qrenderpass.h>
+#include <Qt3DRenderer/qopenglfilter.h>
+#include <Qt3DRenderer/qalphacoverage.h>
+#include <Qt3DRenderer/qdepthtest.h>
+
+#include <QUrl>
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3D {
+
+
+QNormalDiffuseMapAlphaMaterialPrivate::QNormalDiffuseMapAlphaMaterialPrivate(QNormalDiffuseMapAlphaMaterial *qq)
+    : QNormalDiffuseMapMaterialPrivate(qq)
+    , m_alphaCoverage(new QAlphaCoverage())
+    , m_depthTest(new QDepthTest())
+{
+}
+
+void QNormalDiffuseMapAlphaMaterialPrivate::init()
+{
+    m_normalDiffuseGL3Shader->setVertexShaderCode(QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/gl3/normaldiffusemap.vert"))));
+    m_normalDiffuseGL3Shader->setFragmentShaderCode(QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/gl3/normaldiffusemapalpha.frag"))));
+    m_normalDiffuseGL2ES2Shader->setVertexShaderCode(QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/es2/normaldiffusemap.vert"))));
+    m_normalDiffuseGL2ES2Shader->setFragmentShaderCode(QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/es2/normaldiffusemapalpha.frag"))));
+
+    m_normalDiffuseGL3Technique->openGLFilter()->setApi(QOpenGLFilter::Desktop);
+    m_normalDiffuseGL3Technique->openGLFilter()->setMajorVersion(3);
+    m_normalDiffuseGL3Technique->openGLFilter()->setMinorVersion(1);
+    m_normalDiffuseGL3Technique->openGLFilter()->setProfile(QOpenGLFilter::Core);
+
+    m_normalDiffuseGL2Technique->openGLFilter()->setApi(QOpenGLFilter::Desktop);
+    m_normalDiffuseGL2Technique->openGLFilter()->setMajorVersion(2);
+    m_normalDiffuseGL2Technique->openGLFilter()->setMinorVersion(0);
+    m_normalDiffuseGL2Technique->openGLFilter()->setProfile(QOpenGLFilter::None);
+
+    m_normalDiffuseES2Technique->openGLFilter()->setApi(QOpenGLFilter::ES);
+    m_normalDiffuseES2Technique->openGLFilter()->setMajorVersion(2);
+    m_normalDiffuseES2Technique->openGLFilter()->setMinorVersion(0);
+    m_normalDiffuseES2Technique->openGLFilter()->setProfile(QOpenGLFilter::None);
+
+    m_depthTest->setFunc(QDepthTest::Less);
+
+    m_normalDiffuseGL3RenderPass->setShaderProgram(m_normalDiffuseGL3Shader);
+    m_normalDiffuseGL3RenderPass->addRenderState(m_alphaCoverage);
+    m_normalDiffuseGL3RenderPass->addRenderState(m_depthTest);
+
+    m_normalDiffuseGL2RenderPass->setShaderProgram(m_normalDiffuseGL2ES2Shader);
+    m_normalDiffuseGL2RenderPass->addRenderState(m_alphaCoverage);
+    m_normalDiffuseGL2RenderPass->addRenderState(m_depthTest);
+
+    m_normalDiffuseES2RenderPass->setShaderProgram(m_normalDiffuseGL2ES2Shader);
+    m_normalDiffuseES2RenderPass->addRenderState(m_alphaCoverage);
+    m_normalDiffuseES2RenderPass->addRenderState(m_depthTest);
+
+    m_normalDiffuseGL3Technique->addPass(m_normalDiffuseGL3RenderPass);
+    m_normalDiffuseGL2Technique->addPass(m_normalDiffuseGL2RenderPass);
+    m_normalDiffuseES2Technique->addPass(m_normalDiffuseES2RenderPass);
+
+    m_normalDiffuseEffect->addTechnique(m_normalDiffuseGL3Technique);
+    m_normalDiffuseEffect->addTechnique(m_normalDiffuseGL2Technique);
+    m_normalDiffuseEffect->addTechnique(m_normalDiffuseES2Technique);
+
+    m_normalDiffuseEffect->addParameter(m_ambientParameter);
+    m_normalDiffuseEffect->addParameter(m_diffuseParameter);
+    m_normalDiffuseEffect->addParameter(m_normalParameter);
+    m_normalDiffuseEffect->addParameter(m_specularParameter);
+    m_normalDiffuseEffect->addParameter(m_shininessParameter);
+    m_normalDiffuseEffect->addParameter(m_textureScaleParameter);
+
+    static_cast<QMaterial *>(q_ptr)->setEffect(m_normalDiffuseEffect);
+}
+
+
+/*!
+    \class Qt3D::QNormalDiffuseMapAlphaMaterial
+    \brief The QNormalDiffuseMapAlphaMaterial provides a default implementation of the phong lighting and bump effect where the diffuse light component
+    is read from a texture map and the normals of the mesh being rendered from a normal texture map. In addition, it defines an alpha to coverage and
+    a depth test to be performed in the rendering pass.
+    \inmodule Qt3DRender
+    \since 5.5
+
+    The specular 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 Qt3D::QNormalDiffuseMapAlphaMaterial::QNormalDiffuseMapAlphaMaterial()
+    Constructs a new Qt3D::QNormalDiffuseMapAlphaMaterial instance with parent object \a parent.
+*/
+QNormalDiffuseMapAlphaMaterial::QNormalDiffuseMapAlphaMaterial(QNode *parent)
+    : QNormalDiffuseMapMaterial(*new QNormalDiffuseMapAlphaMaterialPrivate(this), parent)
+{
+}
+
+QNormalDiffuseMapAlphaMaterial::~QNormalDiffuseMapAlphaMaterial()
+{
+}
+
+} // Qt3D
+
+QT_END_NAMESPACE