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Diffstat (limited to 'src/particles/qquickcustomparticle.cpp')
| -rw-r--r-- | src/particles/qquickcustomparticle.cpp | 465 |
1 files changed, 0 insertions, 465 deletions
diff --git a/src/particles/qquickcustomparticle.cpp b/src/particles/qquickcustomparticle.cpp deleted file mode 100644 index ecb71cb913..0000000000 --- a/src/particles/qquickcustomparticle.cpp +++ /dev/null @@ -1,465 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtQml 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 "qquickcustomparticle_p.h" -#include <QtCore/qrandom.h> -#include <qopenglcontext.h> -#include <QtQuick/private/qquickshadereffectmesh_p.h> -#include <QtQuick/private/qsgshadersourcebuilder_p.h> -#include <QtQml/qqmlinfo.h> - -QT_BEGIN_NAMESPACE - -static QSGGeometry::Attribute PlainParticle_Attributes[] = { - QSGGeometry::Attribute::create(0, 2, GL_FLOAT, true), // Position - QSGGeometry::Attribute::create(1, 2, GL_FLOAT), // TexCoord - QSGGeometry::Attribute::create(2, 4, GL_FLOAT), // Data - QSGGeometry::Attribute::create(3, 4, GL_FLOAT), // Vectors - QSGGeometry::Attribute::create(4, 1, GL_FLOAT) // r -}; - -static QSGGeometry::AttributeSet PlainParticle_AttributeSet = -{ - 5, // Attribute Count - (2 + 2 + 4 + 4 + 1) * sizeof(float), - PlainParticle_Attributes -}; - -struct PlainVertex { - float x; - float y; - float tx; - float ty; - float t; - float lifeSpan; - float size; - float endSize; - float vx; - float vy; - float ax; - float ay; - float r; -}; - -struct PlainVertices { - PlainVertex v1; - PlainVertex v2; - PlainVertex v3; - PlainVertex v4; -}; - -/*! - \qmltype CustomParticle - \instantiates QQuickCustomParticle - \inqmlmodule QtQuick.Particles - \inherits ParticlePainter - \brief For specifying shaders to paint particles. - \ingroup qtquick-particles - - \note The maximum number of custom particles is limited to 16383. -*/ - -QQuickCustomParticle::QQuickCustomParticle(QQuickItem* parent) - : QQuickParticlePainter(parent) - , m_common(this, [this](int mappedId){this->propertyChanged(mappedId);}) - , m_myMetaObject(nullptr) - , m_dirtyUniforms(true) - , m_dirtyUniformValues(true) - , m_dirtyTextureProviders(true) - , m_dirtyProgram(true) -{ - setFlag(QQuickItem::ItemHasContents); -} - -void QQuickCustomParticle::sceneGraphInvalidated() -{ - m_nodes.clear(); -} - -QQuickCustomParticle::~QQuickCustomParticle() -{ -} - -void QQuickCustomParticle::componentComplete() -{ - if (!m_myMetaObject) - m_myMetaObject = metaObject(); - - m_common.updateShader(this, m_myMetaObject, Key::FragmentShader); - updateVertexShader(); - reset(); - QQuickParticlePainter::componentComplete(); -} - - -//Trying to keep the shader conventions the same as in qsgshadereffectitem -/*! - \qmlproperty string QtQuick.Particles::CustomParticle::fragmentShader - - This property holds the fragment shader's GLSL source code. - The default shader expects the texture coordinate to be passed from the - vertex shader as "varying highp vec2 qt_TexCoord0", and it samples from a - sampler2D named "source". -*/ - -void QQuickCustomParticle::setFragmentShader(const QByteArray &code) -{ - if (m_common.source.sourceCode[Key::FragmentShader].constData() == code.constData()) - return; - m_common.source.sourceCode[Key::FragmentShader] = code; - m_dirtyProgram = true; - if (isComponentComplete()) { - m_common.updateShader(this, m_myMetaObject, Key::FragmentShader); - reset(); - } - emit fragmentShaderChanged(); -} - -/*! - \qmlproperty string QtQuick.Particles::CustomParticle::vertexShader - - This property holds the vertex shader's GLSL source code. - - The default shader passes the texture coordinate along to the fragment - shader as "varying highp vec2 qt_TexCoord0". - - To aid writing a particle vertex shader, the following GLSL code is prepended - to your vertex shader: - \code - attribute highp vec2 qt_ParticlePos; - attribute highp vec2 qt_ParticleTex; - attribute highp vec4 qt_ParticleData; // x = time, y = lifeSpan, z = size, w = endSize - attribute highp vec4 qt_ParticleVec; // x,y = constant velocity, z,w = acceleration - attribute highp float qt_ParticleR; - uniform highp mat4 qt_Matrix; - uniform highp float qt_Timestamp; - varying highp vec2 qt_TexCoord0; - void defaultMain() { - qt_TexCoord0 = qt_ParticleTex; - highp float size = qt_ParticleData.z; - highp float endSize = qt_ParticleData.w; - highp float t = (qt_Timestamp - qt_ParticleData.x) / qt_ParticleData.y; - highp float currentSize = mix(size, endSize, t * t); - if (t < 0. || t > 1.) - currentSize = 0.; - highp vec2 pos = qt_ParticlePos - - currentSize / 2. + currentSize * qt_ParticleTex // adjust size - + qt_ParticleVec.xy * t * qt_ParticleData.y // apply velocity vector.. - + 0.5 * qt_ParticleVec.zw * pow(t * qt_ParticleData.y, 2.); - gl_Position = qt_Matrix * vec4(pos.x, pos.y, 0, 1); - } - \endcode - - defaultMain() is the same code as in the default shader, you can call this for basic - particle functions and then add additional variables for custom effects. Note that - the vertex shader for particles is responsible for simulating the movement of particles - over time, the particle data itself only has the starting position and spawn time. -*/ - -void QQuickCustomParticle::setVertexShader(const QByteArray &code) -{ - if (m_common.source.sourceCode[Key::VertexShader].constData() == code.constData()) - return; - m_common.source.sourceCode[Key::VertexShader] = code; - - m_dirtyProgram = true; - if (isComponentComplete()) { - updateVertexShader(); - reset(); - } - emit vertexShaderChanged(); -} - -void QQuickCustomParticle::updateVertexShader() -{ - m_common.disconnectPropertySignals(this, Key::VertexShader); - m_common.uniformData[Key::VertexShader].clear(); - m_common.clearSignalMappers(Key::VertexShader); - m_common.attributes.clear(); - m_common.attributes.append("qt_ParticlePos"); - m_common.attributes.append("qt_ParticleTex"); - m_common.attributes.append("qt_ParticleData"); - m_common.attributes.append("qt_ParticleVec"); - m_common.attributes.append("qt_ParticleR"); - - UniformData d; - d.name = "qt_Matrix"; - d.specialType = UniformData::Matrix; - m_common.uniformData[Key::VertexShader].append(d); - m_common.signalMappers[Key::VertexShader].append(0); - - d.name = "qt_Timestamp"; - d.specialType = UniformData::None; - m_common.uniformData[Key::VertexShader].append(d); - m_common.signalMappers[Key::VertexShader].append(0); - - const QByteArray &code = m_common.source.sourceCode[Key::VertexShader]; - if (!code.isEmpty()) - m_common.lookThroughShaderCode(this, m_myMetaObject, Key::VertexShader, code); - - m_common.connectPropertySignals(this, m_myMetaObject, Key::VertexShader); -} - -void QQuickCustomParticle::reset() -{ - QQuickParticlePainter::reset(); - update(); -} - -QSGNode *QQuickCustomParticle::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *) -{ - QQuickOpenGLShaderEffectNode *rootNode = static_cast<QQuickOpenGLShaderEffectNode *>(oldNode); - if (m_pleaseReset){ - delete rootNode;//Automatically deletes children - rootNode = nullptr; - m_nodes.clear(); - m_pleaseReset = false; - m_dirtyProgram = true; - } - - if (m_system && m_system->isRunning() && !m_system->isPaused()){ - rootNode = prepareNextFrame(rootNode); - if (rootNode) { - foreach (QSGGeometryNode* node, m_nodes) - node->markDirty(QSGNode::DirtyGeometry); - update(); - } - } - - return rootNode; -} - -QQuickOpenGLShaderEffectNode *QQuickCustomParticle::prepareNextFrame(QQuickOpenGLShaderEffectNode *rootNode) -{ - if (!rootNode) - rootNode = buildCustomNodes(); - - if (!rootNode) - return nullptr; - - if (m_dirtyProgram) { - const bool isES = QOpenGLContext::currentContext()->isOpenGLES(); - - QQuickOpenGLShaderEffectMaterial *material = static_cast<QQuickOpenGLShaderEffectMaterial *>(rootNode->material()); - Q_ASSERT(material); - - Key s = m_common.source; - QSGShaderSourceBuilder builder; - if (s.sourceCode[Key::FragmentShader].isEmpty()) { - builder.appendSourceFile(QStringLiteral(":/particles/shaders/customparticle.frag")); - if (isES) - builder.removeVersion(); - s.sourceCode[Key::FragmentShader] = builder.source(); - builder.clear(); - } - - builder.appendSourceFile(QStringLiteral(":/particles/shaders/customparticletemplate.vert")); - if (isES) - builder.removeVersion(); - - if (s.sourceCode[Key::VertexShader].isEmpty()) - builder.appendSourceFile(QStringLiteral(":/particles/shaders/customparticle.vert")); - s.sourceCode[Key::VertexShader] = builder.source() + s.sourceCode[Key::VertexShader]; - - material->setProgramSource(s); - material->attributes = m_common.attributes; - foreach (QQuickOpenGLShaderEffectNode* node, m_nodes) - node->markDirty(QSGNode::DirtyMaterial); - - m_dirtyProgram = false; - m_dirtyUniforms = true; - } - - m_lastTime = m_system->systemSync(this) / 1000.; - if (true) //Currently this is how we update timestamp... potentially over expensive. - buildData(rootNode); - return rootNode; -} - -QQuickOpenGLShaderEffectNode* QQuickCustomParticle::buildCustomNodes() -{ - typedef QHash<int, QQuickOpenGLShaderEffectNode*>::const_iterator NodeHashConstIt; - - if (!QOpenGLContext::currentContext()) - return nullptr; - - if (m_count * 4 > 0xffff) { - // Index data is ushort. - qmlInfo(this) << "CustomParticle: Too many particles - maximum 16383 per CustomParticle"; - return nullptr; - } - - if (m_count <= 0) { - qmlInfo(this) << "CustomParticle: Too few particles"; - return nullptr; - } - - if (groups().isEmpty()) - return nullptr; - - QQuickOpenGLShaderEffectNode *rootNode = nullptr; - QQuickOpenGLShaderEffectMaterial *material = new QQuickOpenGLShaderEffectMaterial; - m_dirtyProgram = true; - - for (auto groupId : groupIds()) { - int count = m_system->groupData[groupId]->size(); - - QQuickOpenGLShaderEffectNode* node = new QQuickOpenGLShaderEffectNode(); - m_nodes.insert(groupId, node); - - node->setMaterial(material); - - //Create Particle Geometry - int vCount = count * 4; - int iCount = count * 6; - QSGGeometry *g = new QSGGeometry(PlainParticle_AttributeSet, vCount, iCount); - g->setDrawingMode(GL_TRIANGLES); - node->setGeometry(g); - node->setFlag(QSGNode::OwnsGeometry, true); - PlainVertex *vertices = (PlainVertex *) g->vertexData(); - for (int p=0; p < count; ++p) { - commit(groupId, p); - vertices[0].tx = 0; - vertices[0].ty = 0; - - vertices[1].tx = 1; - vertices[1].ty = 0; - - vertices[2].tx = 0; - vertices[2].ty = 1; - - vertices[3].tx = 1; - vertices[3].ty = 1; - vertices += 4; - } - quint16 *indices = g->indexDataAsUShort(); - for (int i=0; i < count; ++i) { - int o = i * 4; - indices[0] = o; - indices[1] = o + 1; - indices[2] = o + 2; - indices[3] = o + 1; - indices[4] = o + 3; - indices[5] = o + 2; - indices += 6; - } - } - - NodeHashConstIt it = m_nodes.cbegin(); - rootNode = it.value(); - rootNode->setFlag(QSGNode::OwnsMaterial, true); - NodeHashConstIt cend = m_nodes.cend(); - for (++it; it != cend; ++it) - rootNode->appendChildNode(it.value()); - - return rootNode; -} - -void QQuickCustomParticle::sourceDestroyed(QObject *object) -{ - m_common.sourceDestroyed(object); -} - -void QQuickCustomParticle::propertyChanged(int mappedId) -{ - bool textureProviderChanged; - m_common.propertyChanged(this, m_myMetaObject, mappedId, &textureProviderChanged); - m_dirtyTextureProviders |= textureProviderChanged; - m_dirtyUniformValues = true; - update(); -} - - -void QQuickCustomParticle::buildData(QQuickOpenGLShaderEffectNode *rootNode) -{ - if (!rootNode) - return; - for (int shaderType = 0; shaderType < Key::ShaderTypeCount; ++shaderType) { - for (int i = 0; i < m_common.uniformData[shaderType].size(); ++i) { - if (m_common.uniformData[shaderType].at(i).name == "qt_Timestamp") - m_common.uniformData[shaderType][i].value = QVariant::fromValue(m_lastTime); - } - } - m_common.updateMaterial(rootNode, static_cast<QQuickOpenGLShaderEffectMaterial *>(rootNode->material()), - m_dirtyUniforms, true, m_dirtyTextureProviders); - foreach (QQuickOpenGLShaderEffectNode* node, m_nodes) - node->markDirty(QSGNode::DirtyMaterial); - m_dirtyUniforms = m_dirtyUniformValues = m_dirtyTextureProviders = false; -} - -void QQuickCustomParticle::initialize(int gIdx, int pIdx) -{ - QQuickParticleData* datum = m_system->groupData[gIdx]->data[pIdx]; - datum->r = QRandomGenerator::global()->generateDouble(); -} - -void QQuickCustomParticle::commit(int gIdx, int pIdx) -{ - if (m_nodes[gIdx] == 0) - return; - - QQuickParticleData* datum = m_system->groupData[gIdx]->data[pIdx]; - PlainVertices *particles = (PlainVertices *) m_nodes[gIdx]->geometry()->vertexData(); - PlainVertex *vertices = (PlainVertex *)&particles[pIdx]; - for (int i=0; i<4; ++i) { - vertices[i].x = datum->x - m_systemOffset.x(); - vertices[i].y = datum->y - m_systemOffset.y(); - vertices[i].t = datum->t; - vertices[i].lifeSpan = datum->lifeSpan; - vertices[i].size = datum->size; - vertices[i].endSize = datum->endSize; - vertices[i].vx = datum->vx; - vertices[i].vy = datum->vy; - vertices[i].ax = datum->ax; - vertices[i].ay = datum->ay; - vertices[i].r = datum->r; - } -} - -void QQuickCustomParticle::itemChange(ItemChange change, const ItemChangeData &value) -{ - if (change == QQuickItem::ItemSceneChange) - m_common.updateWindow(value.window); - QQuickParticlePainter::itemChange(change, value); -} - - -QT_END_NAMESPACE - -#include "moc_qquickcustomparticle_p.cpp" |