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Diffstat (limited to 'src/declarative/particles/qquickcustomparticle.cpp')
| -rw-r--r-- | src/declarative/particles/qquickcustomparticle.cpp | 596 |
1 files changed, 0 insertions, 596 deletions
diff --git a/src/declarative/particles/qquickcustomparticle.cpp b/src/declarative/particles/qquickcustomparticle.cpp deleted file mode 100644 index 153dd273b6..0000000000 --- a/src/declarative/particles/qquickcustomparticle.cpp +++ /dev/null @@ -1,596 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtDeclarative module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** 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, Nokia gives you certain additional -** rights. These rights are described in the Nokia 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. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qquickcustomparticle_p.h" -#include <private/qquickshadereffectmesh_p.h> -#include <cstdlib> - -QT_BEGIN_NAMESPACE - -//Includes comments because the code isn't self explanatory -static const char qt_particles_template_vertex_code[] = - "attribute highp vec2 qt_ParticlePos;\n" - "attribute highp vec2 qt_ParticleTex;\n" - "attribute highp vec4 qt_ParticleData; // x = time, y = lifeSpan, z = size, w = endSize\n" - "attribute highp vec4 qt_ParticleVec; // x,y = constant speed, z,w = acceleration\n" - "attribute highp float qt_ParticleR;\n" - "uniform highp mat4 qt_Matrix;\n" - "uniform highp float qt_Timestamp;\n" - "varying highp vec2 qt_TexCoord0;\n" - "void defaultMain() {\n" - " qt_TexCoord0 = qt_ParticleTex;\n" - " highp float size = qt_ParticleData.z;\n" - " highp float endSize = qt_ParticleData.w;\n" - " highp float t = (qt_Timestamp - qt_ParticleData.x) / qt_ParticleData.y;\n" - " highp float currentSize = mix(size, endSize, t * t);\n" - " if (t < 0. || t > 1.)\n" - " currentSize = 0.;\n" - " highp vec2 pos = qt_ParticlePos\n" - " - currentSize / 2. + currentSize * qt_ParticleTex // adjust size\n" - " + qt_ParticleVec.xy * t * qt_ParticleData.y // apply speed vector..\n" - " + 0.5 * qt_ParticleVec.zw * pow(t * qt_ParticleData.y, 2.);\n" - " gl_Position = qt_Matrix * vec4(pos.x, pos.y, 0, 1);\n" - "}"; -static const char qt_particles_default_vertex_code[] = - "void main() { \n" - " defaultMain(); \n" - "}"; - -static const char qt_particles_default_fragment_code[] = - "uniform sampler2D source; \n" - "varying highp vec2 qt_TexCoord0; \n" - "uniform lowp float qt_Opacity; \n" - "void main() { \n" - " gl_FragColor = texture2D(source, qt_TexCoord0) * qt_Opacity; \n" - "}"; - -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; -}; - -/*! - \qmlclass CustomParticle QQuickCustomParticle - \inqmlmodule QtQuick.Particles 2 - \inherits ParticlePainter - \brief The CustomParticle element allows you to specify your own shader to paint particles. - -*/ - -QQuickCustomParticle::QQuickCustomParticle(QQuickItem* parent) - : QQuickParticlePainter(parent) - , m_dirtyData(true) - , m_material(0) - , m_rootNode(0) -{ - setFlag(QQuickItem::ItemHasContents); -} - -class QQuickShaderEffectMaterialObject : public QObject, public QQuickShaderEffectMaterial { }; - -QQuickCustomParticle::~QQuickCustomParticle() -{ - if (m_material) - m_material->deleteLater(); -} - -void QQuickCustomParticle::componentComplete() -{ - reset(); - QQuickParticlePainter::componentComplete(); -} - - -//Trying to keep the shader conventions the same as in qsgshadereffectitem -/*! - \qmlproperty string QtQuick.Particles2::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_source.fragmentCode.constData() == code.constData()) - return; - m_source.fragmentCode = code; - if (isComponentComplete()) { - reset(); - } - emit fragmentShaderChanged(); -} - -/*! - \qmlproperty string QtQuick.Particles2::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 speed, 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 speed 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_source.vertexCode.constData() == code.constData()) - return; - m_source.vertexCode = code; - if (isComponentComplete()) { - reset(); - } - emit vertexShaderChanged(); -} - -void QQuickCustomParticle::reset() -{ - disconnectPropertySignals(); - - m_source.attributeNames.clear(); - m_source.uniformNames.clear(); - m_source.respectsOpacity = false; - m_source.respectsMatrix = false; - m_source.className = metaObject()->className(); - - for (int i = 0; i < m_sources.size(); ++i) { - const SourceData &source = m_sources.at(i); - delete source.mapper; - if (source.item && source.item->parentItem() == this) - source.item->setParentItem(0); - } - m_sources.clear(); - - QQuickParticlePainter::reset(); - m_pleaseReset = true; - update(); -} - - -void QQuickCustomParticle::changeSource(int index) -{ - Q_ASSERT(index >= 0 && index < m_sources.size()); - QVariant v = property(m_sources.at(index).name.constData()); - setSource(v, index); -} - -void QQuickCustomParticle::updateData() -{ - m_dirtyData = true; - update(); -} - -void QQuickCustomParticle::setSource(const QVariant &var, int index) -{ - Q_ASSERT(index >= 0 && index < m_sources.size()); - - SourceData &source = m_sources[index]; - - source.item = 0; - if (var.isNull()) { - return; - } else if (!qVariantCanConvert<QObject *>(var)) { - qWarning("Could not assign source of type '%s' to property '%s'.", var.typeName(), source.name.constData()); - return; - } - - QObject *obj = qVariantValue<QObject *>(var); - source.item = qobject_cast<QQuickItem *>(obj); - if (!source.item || !source.item->isTextureProvider()) { - qWarning("ShaderEffect: source uniform [%s] is not assigned a valid texture provider: %s [%s]", - source.name.constData(), qPrintable(obj->objectName()), obj->metaObject()->className()); - return; - } - - // TODO: Copy better solution in QQuickShaderEffect when they find it. - // 'source.item' needs a canvas to get a scenegraph node. - // The easiest way to make sure it gets a canvas is to - // make it a part of the same item tree as 'this'. - if (source.item && source.item->parentItem() == 0) { - source.item->setParentItem(this); - source.item->setVisible(false); - } -} - -void QQuickCustomParticle::disconnectPropertySignals() -{ - disconnect(this, 0, this, SLOT(updateData())); - for (int i = 0; i < m_sources.size(); ++i) { - SourceData &source = m_sources[i]; - disconnect(this, 0, source.mapper, 0); - disconnect(source.mapper, 0, this, 0); - } -} - -void QQuickCustomParticle::connectPropertySignals() -{ - QSet<QByteArray>::const_iterator it; - for (it = m_source.uniformNames.begin(); it != m_source.uniformNames.end(); ++it) { - int pi = metaObject()->indexOfProperty(it->constData()); - if (pi >= 0) { - QMetaProperty mp = metaObject()->property(pi); - if (!mp.hasNotifySignal()) - qWarning("QQuickCustomParticle: property '%s' does not have notification method!", it->constData()); - QByteArray signalName("2"); - signalName.append(mp.notifySignal().signature()); - connect(this, signalName, this, SLOT(updateData())); - } else { - qWarning("QQuickCustomParticle: '%s' does not have a matching property!", it->constData()); - } - } - for (int i = 0; i < m_sources.size(); ++i) { - SourceData &source = m_sources[i]; - int pi = metaObject()->indexOfProperty(source.name.constData()); - if (pi >= 0) { - QMetaProperty mp = metaObject()->property(pi); - QByteArray signalName("2"); - signalName.append(mp.notifySignal().signature()); - connect(this, signalName, source.mapper, SLOT(map())); - source.mapper->setMapping(this, i); - connect(source.mapper, SIGNAL(mapped(int)), this, SLOT(changeSource(int))); - } else { - qWarning("QQuickCustomParticle: '%s' does not have a matching source!", source.name.constData()); - } - } -} - -void QQuickCustomParticle::updateProperties() -{ - QByteArray vertexCode = m_source.vertexCode; - QByteArray fragmentCode = m_source.fragmentCode; - if (vertexCode.isEmpty()) - vertexCode = qt_particles_default_vertex_code; - if (fragmentCode.isEmpty()) - fragmentCode = qt_particles_default_fragment_code; - vertexCode = qt_particles_template_vertex_code + vertexCode; - - m_source.attributeNames.clear(); - m_source.attributeNames << "qt_ParticlePos" - << "qt_ParticleTex" - << "qt_ParticleData" - << "qt_ParticleVec" - << "qt_ParticleR"; - - lookThroughShaderCode(vertexCode); - lookThroughShaderCode(fragmentCode); - - if (!m_source.respectsMatrix) - qWarning("QQuickCustomParticle: Missing reference to \'qt_Matrix\'."); - if (!m_source.respectsOpacity) - qWarning("QQuickCustomParticle: Missing reference to \'qt_Opacity\'."); - - for (int i = 0; i < m_sources.size(); ++i) { - QVariant v = property(m_sources.at(i).name); - setSource(v, i); - } - - connectPropertySignals(); -} - -void QQuickCustomParticle::lookThroughShaderCode(const QByteArray &code) -{ - // Regexp for matching attributes and uniforms. - // In human readable form: attribute|uniform [lowp|mediump|highp] <type> <name> - static QRegExp re(QLatin1String("\\b(attribute|uniform)\\b\\s*\\b(?:lowp|mediump|highp)?\\b\\s*\\b(\\w+)\\b\\s*\\b(\\w+)")); - Q_ASSERT(re.isValid()); - - int pos = -1; - - QString wideCode = QString::fromLatin1(code.constData(), code.size()); - - while ((pos = re.indexIn(wideCode, pos + 1)) != -1) { - QByteArray decl = re.cap(1).toLatin1(); // uniform or attribute - QByteArray type = re.cap(2).toLatin1(); // type - QByteArray name = re.cap(3).toLatin1(); // variable name - - if (decl == "attribute") { - if (!m_source.attributeNames.contains(name)) - qWarning() << "Custom Particle: Unknown attribute " << name; - } else { - Q_ASSERT(decl == "uniform");//TODO: Shouldn't assert - - if (name == "qt_Matrix") { - m_source.respectsMatrix = true; - } else if (name == "qt_Opacity") { - m_source.respectsOpacity = true; - } else if (name == "qt_Timestamp") { - //Not strictly necessary - } else { - m_source.uniformNames.insert(name); - if (type == "sampler2D") { - SourceData d; - d.mapper = new QSignalMapper; - d.name = name; - d.item = 0; - m_sources.append(d); - } - } - } - } -} - -QSGNode *QQuickCustomParticle::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *) -{ - Q_UNUSED(oldNode); - if (m_pleaseReset){ - - //delete m_material;//Shader effect item doesn't regen material? - - delete m_rootNode;//Automatically deletes children - m_rootNode = 0; - m_nodes.clear(); - m_pleaseReset = false; - m_dirtyData = false; - } - - if (m_system && m_system->isRunning() && !m_system->isPaused()){ - prepareNextFrame(); - if (m_rootNode) { - update(); - foreach (QSGGeometryNode* node, m_nodes) - node->markDirty(QSGNode::DirtyGeometry);//done in buildData? - } - } - - return m_rootNode; -} - -void QQuickCustomParticle::prepareNextFrame(){ - if (!m_rootNode) - m_rootNode = buildCustomNodes(); - if (!m_rootNode) - return; - - m_lastTime = m_system->systemSync(this) / 1000.; - if (m_dirtyData || true)//Currently this is how we update timestamp... potentially over expensive. - buildData(); -} - -QQuickShaderEffectNode* QQuickCustomParticle::buildCustomNodes() -{ -#ifdef QT_OPENGL_ES_2 - if (m_count * 4 > 0xffff) { - printf("CustomParticle: Too many particles... \n"); - return 0; - } -#endif - - if (m_count <= 0) { - printf("CustomParticle: Too few particles... \n"); - return 0; - } - - updateProperties(); - - QQuickShaderEffectProgram s = m_source; - if (s.fragmentCode.isEmpty()) - s.fragmentCode = qt_particles_default_fragment_code; - if (s.vertexCode.isEmpty()) - s.vertexCode = qt_particles_default_vertex_code; - - if (!m_material) { - m_material = new QQuickShaderEffectMaterialObject; - } - - s.vertexCode = qt_particles_template_vertex_code + s.vertexCode; - m_material->setProgramSource(s); - foreach (const QString &str, m_groups){ - int gIdx = m_system->groupIds[str]; - int count = m_system->groupData[gIdx]->size(); - - QQuickShaderEffectNode* node = new QQuickShaderEffectNode(); - m_nodes.insert(gIdx, node); - - node->setMaterial(m_material); - node->markDirty(QSGNode::DirtyMaterial); - - //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); - PlainVertex *vertices = (PlainVertex *) g->vertexData(); - for (int p=0; p < count; ++p) { - commit(gIdx, 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; - } - } - foreach (QQuickShaderEffectNode* node, m_nodes){ - if (node == *(m_nodes.begin())) - continue; - (*(m_nodes.begin()))->appendChildNode(node); - } - - return *(m_nodes.begin()); -} - - -void QQuickCustomParticle::buildData() -{ - if (!m_rootNode) - return; - const QByteArray timestampName("qt_Timestamp"); - QVector<QPair<QByteArray, QVariant> > values; - QVector<QPair<QByteArray, QSGTextureProvider *> > textures; - const QVector<QPair<QByteArray, QSGTextureProvider *> > &oldTextures = m_material->textureProviders(); - for (int i = 0; i < oldTextures.size(); ++i) { - QSGTextureProvider *t = oldTextures.at(i).second; - if (t) - foreach (QQuickShaderEffectNode* node, m_nodes) - disconnect(t, SIGNAL(textureChanged()), node, SLOT(markDirtyTexture())); - } - for (int i = 0; i < m_sources.size(); ++i) { - const SourceData &source = m_sources.at(i); - QSGTextureProvider *t = source.item->textureProvider(); - textures.append(qMakePair(source.name, t)); - if (t) - foreach (QQuickShaderEffectNode* node, m_nodes) - connect(t, SIGNAL(textureChanged()), node, SLOT(markDirtyTexture()), Qt::DirectConnection); - } - for (QSet<QByteArray>::const_iterator it = m_source.uniformNames.begin(); - it != m_source.uniformNames.end(); ++it) { - values.append(qMakePair(*it, property(*it))); - } - values.append(qMakePair(timestampName, QVariant(m_lastTime))); - m_material->setUniforms(values); - m_material->setTextureProviders(textures); - m_dirtyData = false; - foreach (QQuickShaderEffectNode* node, m_nodes) - node->markDirty(QSGNode::DirtyMaterial); -} - -void QQuickCustomParticle::initialize(int gIdx, int pIdx) -{ - QQuickParticleData* datum = m_system->groupData[gIdx]->data[pIdx]; - datum->r = rand()/(qreal)RAND_MAX; -} - -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; - } -} - -QT_END_NAMESPACE |