qtext2dmaterial.cpp

// Copyright (C) 2014 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 "qtext2dmaterial_p.h"

#include "qtext2dmaterial_p_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/qdepthtest.h>

#include <Qt3DRender/qabstracttexture.h>

#include <QUrl>

#include <QVector3D>

#include <QVector4D>

QT_BEGIN_NAMESPACE

namespace Qt3DExtras {

QText2DMaterialPrivate::QText2DMaterialPrivate()

    : QMaterialPrivate()

    , m_effect(new Qt3DRender::QEffect())

    , m_distanceFieldTexture(nullptr)

    , m_textureParameter(new Qt3DRender::QParameter(QStringLiteral("distanceFieldTexture"), QVariant(0)))

    , m_textureSizeParameter(new Qt3DRender::QParameter(QStringLiteral("textureWidth"), QVariant(256.f)))

    , m_colorParameter(new Qt3DRender::QParameter(QStringLiteral("color"), QVariant(QColor(255, 255, 255, 255))))

    , m_gl3Technique(new Qt3DRender::QTechnique())

    , m_gl2Technique(new Qt3DRender::QTechnique())

    , m_es2Technique(new Qt3DRender::QTechnique())

    , m_rhiTechnique(new Qt3DRender::QTechnique())

    , m_gl3RenderPass(new Qt3DRender::QRenderPass())

    , m_gl2RenderPass(new Qt3DRender::QRenderPass())

    , m_es2RenderPass(new Qt3DRender::QRenderPass())

    , m_rhiRenderPass(new Qt3DRender::QRenderPass())

    , m_rhiShaderProgram(new Qt3DRender::QShaderProgram())

    , m_gl3ShaderProgram(new Qt3DRender::QShaderProgram())

    , m_gl2es2ShaderProgram(new Qt3DRender::QShaderProgram())

    , m_blend(new Qt3DRender::QBlendEquation())

    , m_blendArgs(new Qt3DRender::QBlendEquationArguments())

    , m_depthTest(new Qt3DRender::QDepthTest())

void QText2DMaterialPrivate::init()

    m_rhiShaderProgram->setVertexShaderCode(Qt3DRender::QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/rhi/distancefieldtext.vert"))));

    m_rhiShaderProgram->setFragmentShaderCode(Qt3DRender::QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/rhi/distancefieldtext.frag"))));

    m_gl3ShaderProgram->setVertexShaderCode(Qt3DRender::QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/gl3/distancefieldtext.vert"))));

    m_gl3ShaderProgram->setFragmentShaderCode(Qt3DRender::QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/gl3/distancefieldtext.frag"))));

    m_gl2es2ShaderProgram->setVertexShaderCode(Qt3DRender::QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/es2/distancefieldtext.vert"))));

    m_gl2es2ShaderProgram->setFragmentShaderCode(Qt3DRender::QShaderProgram::loadSource(QUrl(QStringLiteral("qrc:/shaders/es2/distancefieldtext.frag"))));

    m_blend->setBlendFunction(Qt3DRender::QBlendEquation::Add);

    m_blendArgs->setSourceRgba(Qt3DRender::QBlendEquationArguments::SourceAlpha);

    m_blendArgs->setDestinationRgba(Qt3DRender::QBlendEquationArguments::OneMinusSourceAlpha);

    m_depthTest->setDepthFunction(Qt3DRender::QDepthTest::LessOrEqual);

    m_gl3RenderPass->setShaderProgram(m_gl3ShaderProgram);

    m_gl3RenderPass->addRenderState(m_blend);

    m_gl3RenderPass->addRenderState(m_blendArgs);

    m_gl3RenderPass->addRenderState(m_depthTest);

    m_gl2RenderPass->setShaderProgram(m_gl2es2ShaderProgram);

    m_gl2RenderPass->addRenderState(m_blend);

    m_gl2RenderPass->addRenderState(m_blendArgs);

    m_gl2RenderPass->addRenderState(m_depthTest);

    m_es2RenderPass->setShaderProgram(m_gl2es2ShaderProgram);

    m_es2RenderPass->addRenderState(m_blend);

    m_es2RenderPass->addRenderState(m_blendArgs);

    m_es2RenderPass->addRenderState(m_depthTest);

    m_rhiRenderPass->setShaderProgram(m_rhiShaderProgram);

    m_rhiRenderPass->addRenderState(m_blend);

    m_rhiRenderPass->addRenderState(m_blendArgs);

    m_rhiRenderPass->addRenderState(m_depthTest);

    m_gl3Technique->graphicsApiFilter()->setApi(Qt3DRender::QGraphicsApiFilter::OpenGL);

    m_gl3Technique->graphicsApiFilter()->setMajorVersion(3);

    m_gl3Technique->graphicsApiFilter()->setMinorVersion(1);

    m_gl3Technique->graphicsApiFilter()->setProfile(Qt3DRender::QGraphicsApiFilter::CoreProfile);

    m_gl3Technique->addRenderPass(m_gl3RenderPass);

    m_gl2Technique->graphicsApiFilter()->setApi(Qt3DRender::QGraphicsApiFilter::OpenGL);

    m_gl2Technique->graphicsApiFilter()->setMajorVersion(2);

    m_gl2Technique->graphicsApiFilter()->setMinorVersion(0);

    m_gl2Technique->graphicsApiFilter()->setProfile(Qt3DRender::QGraphicsApiFilter::NoProfile);

    m_gl2Technique->addRenderPass(m_gl2RenderPass);

    m_es2Technique->graphicsApiFilter()->setApi(Qt3DRender::QGraphicsApiFilter::OpenGLES);

    m_es2Technique->graphicsApiFilter()->setMajorVersion(2);

    m_es2Technique->graphicsApiFilter()->setMinorVersion(0);

    m_es2Technique->graphicsApiFilter()->setProfile(Qt3DRender::QGraphicsApiFilter::NoProfile);

    m_es2Technique->addRenderPass(m_es2RenderPass);

    m_rhiTechnique->graphicsApiFilter()->setApi(Qt3DRender::QGraphicsApiFilter::RHI);

    m_rhiTechnique->graphicsApiFilter()->setMajorVersion(1);

    m_rhiTechnique->graphicsApiFilter()->setMinorVersion(0);

    m_rhiTechnique->addRenderPass(m_rhiRenderPass);

    Qt3DRender::QFilterKey *filterKey = new Qt3DRender::QFilterKey(q_func());

    filterKey->setName(QStringLiteral("renderingStyle"));

    filterKey->setValue(QStringLiteral("forward"));

    m_gl3Technique->addFilterKey(filterKey);

    m_gl2Technique->addFilterKey(filterKey);

    m_es2Technique->addFilterKey(filterKey);

    m_rhiTechnique->addFilterKey(filterKey);

    m_effect->addTechnique(m_gl3Technique);

    m_effect->addTechnique(m_gl2Technique);

    m_effect->addTechnique(m_es2Technique);

    m_effect->addTechnique(m_rhiTechnique);

    m_effect->addParameter(m_textureParameter);

    m_effect->addParameter(m_textureSizeParameter);

    m_effect->addParameter(m_colorParameter);

    q_func()->setEffect(m_effect);

QText2DMaterial::QText2DMaterial(Qt3DCore::QNode *parent)

    : QMaterial(*new QText2DMaterialPrivate(), parent)

    Q_D(QText2DMaterial);

    d->init();

QText2DMaterial::~QText2DMaterial()

void QText2DMaterial::setColor(const QColor &color)

    Q_D(QText2DMaterial);

    d->m_colorParameter->setValue(QVariant::fromValue(color));

void QText2DMaterial::setDistanceFieldTexture(Qt3DRender::QAbstractTexture *tex)

    Q_D(QText2DMaterial);

    d->m_distanceFieldTexture = tex;

    if (tex) {

        d->m_textureParameter->setValue(QVariant::fromValue(tex));

        d->m_textureSizeParameter->setValue(QVariant::fromValue(static_cast<float>(tex->width())));

    } else {

        d->m_textureParameter->setValue(0);

        d->m_textureSizeParameter->setValue(QVariant::fromValue(1.f));

} // namespace Qt3DExtras

QT_END_NAMESPACE

#include "moc_qtext2dmaterial_p.cpp"

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