QGIS API Documentation 3.43.0-Master (58029bba303)
qgsglobematerial.cpp
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1/***************************************************************************
2 qgsglobematerial.cpp
3 --------------------------------------
4 Date : April 2025
5 Copyright : (C) 2025 by Martin Dobias
6 Email : wonder dot sk at gmail dot com
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
16#include <QUrl>
17
18#include <Qt3DRender/QEffect>
19#include <Qt3DRender/QGraphicsApiFilter>
20#include <Qt3DRender/QParameter>
21#include <Qt3DRender/QRenderPass>
22#include <Qt3DRender/QShaderProgram>
23#include <Qt3DRender/QTechnique>
24#include <Qt3DRender/QTexture>
25
26#include "qgsglobematerial.h"
27#include "moc_qgsglobematerial.cpp"
28
30QgsGlobeMaterial::QgsGlobeMaterial( QNode *parent )
31 : QgsMaterial( parent )
32 , mTextureParameter( new Qt3DRender::QParameter( QStringLiteral( "diffuseTexture" ), new Qt3DRender::QTexture2D ) )
33 , mDiffuseTextureScaleParameter( new Qt3DRender::QParameter( QStringLiteral( "texCoordScale" ), 1.0f ) )
34 , mGL3Technique( new Qt3DRender::QTechnique( this ) )
35 , mGL3RenderPass( new Qt3DRender::QRenderPass( this ) )
36 , mGL3Shader( new Qt3DRender::QShaderProgram( this ) )
37 , mFilterKey( new Qt3DRender::QFilterKey( this ) )
38{
39 init();
40}
41
42QgsGlobeMaterial::~QgsGlobeMaterial() = default;
43
44
45void QgsGlobeMaterial::init()
46{
47 connect( mTextureParameter, &Qt3DRender::QParameter::valueChanged, this, &QgsGlobeMaterial::handleTextureChanged );
48
49 Qt3DRender::QEffect *effect = new Qt3DRender::QEffect();
50
51 effect->addParameter( mTextureParameter );
52 effect->addParameter( mDiffuseTextureScaleParameter );
53
54 mGL3Shader->setFragmentShaderCode( Qt3DRender::QShaderProgram::loadSource( QUrl( QStringLiteral( "qrc:/shaders/globe.frag" ) ) ) );
55 mGL3Shader->setVertexShaderCode( Qt3DRender::QShaderProgram::loadSource( QUrl( QStringLiteral( "qrc:/shaders/default.vert" ) ) ) );
56
57 mGL3Technique->graphicsApiFilter()->setApi( Qt3DRender::QGraphicsApiFilter::OpenGL );
58 mGL3Technique->graphicsApiFilter()->setMajorVersion( 3 );
59 mGL3Technique->graphicsApiFilter()->setMinorVersion( 1 );
60 mGL3Technique->graphicsApiFilter()->setProfile( Qt3DRender::QGraphicsApiFilter::CoreProfile );
61
62 mFilterKey->setParent( this );
63 mFilterKey->setName( QStringLiteral( "renderingStyle" ) );
64 mFilterKey->setValue( QStringLiteral( "forward" ) );
65
66 mGL3Technique->addFilterKey( mFilterKey );
67 mGL3RenderPass->setShaderProgram( mGL3Shader );
68 mGL3Technique->addRenderPass( mGL3RenderPass );
69 effect->addTechnique( mGL3Technique );
70
71 setEffect( effect );
72}
73
74void QgsGlobeMaterial::setTexture( Qt3DRender::QAbstractTexture *texture )
75{
76 mTextureParameter->setValue( QVariant::fromValue( texture ) );
77}
78
79Qt3DRender::QAbstractTexture *QgsGlobeMaterial::texture() const
80{
81 return mTextureParameter->value().value<Qt3DRender::QAbstractTexture *>();
82}
83
84void QgsGlobeMaterial::handleTextureChanged( const QVariant &var )
85{
86 emit textureChanged( var.value<Qt3DRender::QAbstractTexture *>() );
87}
88
Base class for all materials used within QGIS 3D views.
Definition qgsmaterial.h:39