forked from qt-creator/qt-creator
QMLProfiler: Use scene graph for painting events in timeline
By using the scene graph we can retain the geometry for events in the timeline on the GPU and potentially speed up the rendering for large amounts of items. Change-Id: I2cfbb8ef4ebc7b56f1977ec1facb4f2e7f2002ee Reviewed-by: Kai Koehne <kai.koehne@theqtcompany.com>
This commit is contained in:
Ulf Hermann
259
src/plugins/qmlprofiler/timelinenotesrenderpass.cpp
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259
src/plugins/qmlprofiler/timelinenotesrenderpass.cpp
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/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of Qt Creator.
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**
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://www.qt.io/licensing. For further information
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** use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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****************************************************************************/
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#include "timelinenotesrenderpass.h"
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#include "timelinerenderstate.h"
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#include "qmlprofilernotesmodel.h"
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namespace QmlProfiler {
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namespace Internal {
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struct Point2DWithDistanceFromTop {
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float x, y, d;
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void set(float nx, float ny, float nd);
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};
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class NotesMaterial : public QSGMaterial
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{
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public:
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QSGMaterialType *type() const;
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QSGMaterialShader *createShader() const;
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};
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struct NotesGeometry
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{
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static const int maxNotes;
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static const QSGGeometry::AttributeSet &point2DWithDistanceFromTop();
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static QSGGeometry *createGeometry(QVector<int> &ids, const TimelineModel *model,
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const TimelineRenderState *parentState, bool collapsed);
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};
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const int NotesGeometry::maxNotes = 0xffff / 2;
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struct TimelineNotesRenderPassState : public TimelineRenderPass::State
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{
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TimelineNotesRenderPassState(int expandedRows);
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QSGGeometryNode *createNode();
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NotesMaterial material;
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QSGGeometry nullGeometry;
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};
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const QSGGeometry::AttributeSet &NotesGeometry::point2DWithDistanceFromTop()
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{
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static QSGGeometry::Attribute data[] = {
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QSGGeometry::Attribute::create(0, 2, GL_FLOAT, true),
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QSGGeometry::Attribute::create(1, 1, GL_FLOAT),
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};
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static QSGGeometry::AttributeSet attrs = {
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2,
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sizeof(Point2DWithDistanceFromTop),
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data
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};
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return attrs;
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}
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const TimelineNotesRenderPass *TimelineNotesRenderPass::instance()
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{
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static const TimelineNotesRenderPass pass;
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return &pass;
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}
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TimelineNotesRenderPass::TimelineNotesRenderPass()
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{
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}
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TimelineRenderPass::State *TimelineNotesRenderPass::update(const TimelineRenderer *renderer,
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const TimelineRenderState *parentState,
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State *oldState, int firstIndex,
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int lastIndex, bool stateChanged,
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qreal spacing) const
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{
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Q_UNUSED(firstIndex);
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Q_UNUSED(lastIndex);
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Q_UNUSED(spacing);
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const QmlProfilerNotesModel *notes = renderer->notes();
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const TimelineModel *model = renderer->model();
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TimelineNotesRenderPassState *state;
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if (oldState == 0) {
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state = new TimelineNotesRenderPassState(model->expandedRowCount());
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} else {
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if (!stateChanged && !renderer->notesDirty())
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return oldState;
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state = static_cast<TimelineNotesRenderPassState *>(oldState);
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}
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QVector<QVector<int> > expanded(model->expandedRowCount());
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QVector<int> collapsed;
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for (int i = 0; i < qMin(notes->count(), NotesGeometry::maxNotes); ++i) {
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if (notes->timelineModel(i) != model->modelId())
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continue;
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int timelineIndex = notes->timelineIndex(i);
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if (model->startTime(timelineIndex) > parentState->end() ||
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model->endTime(timelineIndex) < parentState->start())
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continue;
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expanded[model->expandedRow(timelineIndex)] << timelineIndex;
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collapsed << timelineIndex;
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}
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QSGGeometryNode *collapsedNode = static_cast<QSGGeometryNode *>(state->collapsedOverlay);
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if (collapsed.count() > 0) {
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collapsedNode->setGeometry(NotesGeometry::createGeometry(collapsed, model, parentState,
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true));
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collapsedNode->setFlag(QSGGeometryNode::OwnsGeometry, true);
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} else {
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collapsedNode->setGeometry(&state->nullGeometry);
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collapsedNode->setFlag(QSGGeometryNode::OwnsGeometry, false);
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}
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for (int row = 0; row < model->expandedRowCount(); ++row) {
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QSGGeometryNode *rowNode = static_cast<QSGGeometryNode *>(state->expandedRows[row]);
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if (expanded[row].isEmpty()) {
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rowNode->setGeometry(&state->nullGeometry);
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rowNode->setFlag(QSGGeometryNode::OwnsGeometry, false);
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} else {
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rowNode->setGeometry(NotesGeometry::createGeometry(expanded[row], model, parentState,
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false));
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collapsedNode->setFlag(QSGGeometryNode::OwnsGeometry, true);
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}
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}
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return state;
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}
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TimelineNotesRenderPassState::TimelineNotesRenderPassState(int numExpandedRows) :
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nullGeometry(NotesGeometry::point2DWithDistanceFromTop(), 0)
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{
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material.setFlag(QSGMaterial::Blending, true);
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expandedRows.reserve(numExpandedRows);
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for (int i = 0; i < numExpandedRows; ++i)
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expandedRows << createNode();
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collapsedOverlay = createNode();
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}
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QSGGeometryNode *TimelineNotesRenderPassState::createNode()
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{
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QSGGeometryNode *node = new QSGGeometryNode;
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node->setGeometry(&nullGeometry);
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node->setMaterial(&material);
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return node;
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}
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QSGGeometry *NotesGeometry::createGeometry(QVector<int> &ids, const TimelineModel *model,
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const TimelineRenderState *parentState, bool collapsed)
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{
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float rowHeight = TimelineModel::defaultRowHeight();
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QSGGeometry *geometry = new QSGGeometry(point2DWithDistanceFromTop(),
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ids.count() * 2);
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geometry->setDrawingMode(GL_LINES);
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geometry->setLineWidth(3);
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Point2DWithDistanceFromTop *v =
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static_cast<Point2DWithDistanceFromTop *>(geometry->vertexData());
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for (int i = 0; i < ids.count(); ++i) {
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int timelineIndex = ids[i];
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float horizontalCenter = ((model->startTime(timelineIndex) +
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model->endTime(timelineIndex)) / (qint64)2 -
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parentState->start()) * parentState->scale();
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float verticalStart = (collapsed ? (model->collapsedRow(timelineIndex) + 0.1) : 0.1) *
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rowHeight;
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float verticalEnd = verticalStart + 0.8 * rowHeight;
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v[i * 2].set(horizontalCenter, verticalStart, 0);
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v[i * 2 + 1].set(horizontalCenter, verticalEnd, 1);
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}
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return geometry;
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}
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class NotesMaterialShader : public QSGMaterialShader
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{
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public:
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NotesMaterialShader();
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virtual void updateState(const RenderState &state, QSGMaterial *newEffect,
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QSGMaterial *oldEffect);
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virtual char const *const *attributeNames() const;
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private:
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virtual void initialize();
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int m_matrix_id;
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int m_z_range_id;
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};
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NotesMaterialShader::NotesMaterialShader()
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: QSGMaterialShader()
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{
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setShaderSourceFile(QOpenGLShader::Vertex, QStringLiteral(":/qmlprofiler/notes.vert"));
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setShaderSourceFile(QOpenGLShader::Fragment, QStringLiteral(":/qmlprofiler/notes.frag"));
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}
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void NotesMaterialShader::updateState(const RenderState &state, QSGMaterial *, QSGMaterial *)
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{
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if (state.isMatrixDirty()) {
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program()->setUniformValue(m_matrix_id, state.combinedMatrix());
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program()->setUniformValue(m_z_range_id, GLfloat(1.0));
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}
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}
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char const *const *NotesMaterialShader::attributeNames() const
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{
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static const char *const attr[] = {"vertexCoord", "distanceFromTop", 0};
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return attr;
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}
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void NotesMaterialShader::initialize()
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{
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m_matrix_id = program()->uniformLocation("matrix");
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m_z_range_id = program()->uniformLocation("_qt_zRange");
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}
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QSGMaterialType *NotesMaterial::type() const
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{
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static QSGMaterialType type;
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return &type;
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}
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QSGMaterialShader *NotesMaterial::createShader() const
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{
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return new NotesMaterialShader;
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}
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void Point2DWithDistanceFromTop::set(float nx, float ny, float nd)
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{
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x = nx; y = ny; d = nd;
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}
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}
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}
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