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Diffstat (limited to 'src/extras/text/qtext2dmaterial.cpp')
| -rw-r--r-- | src/extras/text/qtext2dmaterial.cpp | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/src/extras/text/qtext2dmaterial.cpp b/src/extras/text/qtext2dmaterial.cpp new file mode 100644 index 000000000..d8bf312c4 --- /dev/null +++ b/src/extras/text/qtext2dmaterial.cpp @@ -0,0 +1,179 @@ +/**************************************************************************** +** +** 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 "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("textureSize"), 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_gl3RenderPass(new Qt3DRender::QRenderPass()) + , m_gl2RenderPass(new Qt3DRender::QRenderPass()) + , m_es2RenderPass(new Qt3DRender::QRenderPass()) + , 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_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_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); + + 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_effect->addTechnique(m_gl3Technique); + m_effect->addTechnique(m_gl2Technique); + m_effect->addTechnique(m_es2Technique); + 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 |