diff options
Diffstat (limited to 'examples/opengl/qopenglwindow')
| -rw-r--r-- | examples/opengl/qopenglwindow/CMakeLists.txt | 46 | ||||
| -rw-r--r-- | examples/opengl/qopenglwindow/background.frag | 30 | ||||
| -rw-r--r-- | examples/opengl/qopenglwindow/background_renderer.cpp | 214 | ||||
| -rw-r--r-- | examples/opengl/qopenglwindow/background_renderer.h | 93 | ||||
| -rw-r--r-- | examples/opengl/qopenglwindow/main.cpp | 201 | ||||
| -rw-r--r-- | examples/opengl/qopenglwindow/qopenglwindow.pro | 16 | ||||
| -rw-r--r-- | examples/opengl/qopenglwindow/shaders.qrc | 5 |
7 files changed, 0 insertions, 605 deletions
diff --git a/examples/opengl/qopenglwindow/CMakeLists.txt b/examples/opengl/qopenglwindow/CMakeLists.txt deleted file mode 100644 index 0562cec94c..0000000000 --- a/examples/opengl/qopenglwindow/CMakeLists.txt +++ /dev/null @@ -1,46 +0,0 @@ -cmake_minimum_required(VERSION 3.16) -project(qopenglwindow LANGUAGES CXX) - -set(CMAKE_AUTOMOC ON) - -if(NOT DEFINED INSTALL_EXAMPLESDIR) - set(INSTALL_EXAMPLESDIR "examples") -endif() - -set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/opengl/qopenglwindow") - -find_package(Qt6 REQUIRED COMPONENTS Core Gui OpenGL) - -qt_add_executable(qopenglwindow - background_renderer.cpp background_renderer.h - main.cpp -) - -set_target_properties(qopenglwindow PROPERTIES - WIN32_EXECUTABLE TRUE - MACOSX_BUNDLE TRUE -) - -target_link_libraries(qopenglwindow PUBLIC - Qt::Core - Qt::Gui - Qt::OpenGL -) - -# Resources: -set(shaders_resource_files - "background.frag" -) - -qt_add_resources(qopenglwindow "shaders" - PREFIX - "/" - FILES - ${shaders_resource_files} -) - -install(TARGETS qopenglwindow - RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}" - BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}" - LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}" -) diff --git a/examples/opengl/qopenglwindow/background.frag b/examples/opengl/qopenglwindow/background.frag deleted file mode 100644 index 4af85aae8e..0000000000 --- a/examples/opengl/qopenglwindow/background.frag +++ /dev/null @@ -1,30 +0,0 @@ -#define M_PI 3.14159265358979323846 -#define SPEED 10000.0 - -uniform int currentTime; -uniform highp vec2 windowSize; - -highp float noise(highp vec2 co) -{ - return 0.5 * fract(sin(dot(co.xy, vec2(12.9898,78.233))) * 43758.5453); -} - -highp float curvSpeed() -{ - return (mod(float(currentTime), SPEED) / SPEED) * (2.0 * M_PI); -} - -highp float curv(int curvCount) -{ - highp float curv_y = 0.1 *(cos((gl_FragCoord.x / windowSize.x) * (float(curvCount * 2) * M_PI) - curvSpeed())) + 0.5; - highp float frag_y = gl_FragCoord.y / windowSize.y; - return 1.0 - abs(curv_y - frag_y); -} - -void main() -{ - highp float coordNoise = noise(gl_FragCoord.xy); - highp float proximity = smoothstep(0.85, 1.0, (curv(6) + 1.0) * (coordNoise )); - highp vec3 color = vec3(coordNoise) * proximity; - gl_FragColor = vec4(color, 1.0); -} diff --git a/examples/opengl/qopenglwindow/background_renderer.cpp b/examples/opengl/qopenglwindow/background_renderer.cpp deleted file mode 100644 index acbbe74841..0000000000 --- a/examples/opengl/qopenglwindow/background_renderer.cpp +++ /dev/null @@ -1,214 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "background_renderer.h" - -#include <qmath.h> -#include <QFileInfo> -#include <QTime> - -#include <QOpenGLShaderProgram> -#include <QOpenGLContext> -#include <QOpenGLFunctions> - -#include <math.h> - -static const char vertex_shader[] = - "attribute highp vec3 vertexCoord;" - "void main() {" - " gl_Position = vec4(vertexCoord,1.0);" - "}"; - -static const char fragment_shader[] = - "void main() {" - " gl_FragColor = vec4(0.0,1.0,0.0,1.0);" - "}"; - -static const float vertices[] = { -1, -1, 0, - -1, 1, 0, - 1, -1, 0, - 1, 1, 0 }; - -FragmentToy::FragmentToy(const QString &fragmentSource, QObject *parent) - : QObject(parent) - , m_recompile_shaders(true) -{ - if (QFile::exists(fragmentSource)) { - QFileInfo info(fragmentSource); - m_fragment_file_last_modified = info.lastModified(); - m_fragment_file = fragmentSource; -#if QT_CONFIG(filesystemwatcher) - m_watcher.addPath(info.canonicalPath()); - QObject::connect(&m_watcher, &QFileSystemWatcher::directoryChanged, this, &FragmentToy::fileChanged); -#endif - } -} - -FragmentToy::~FragmentToy() - = default; - -void FragmentToy::draw(const QSize &windowSize) -{ - if (!m_program) - initializeOpenGLFunctions(); - - glDisable(GL_STENCIL_TEST); - glDisable(GL_DEPTH_TEST); - - glClearColor(0, 0, 0, 1); - glClear(GL_COLOR_BUFFER_BIT); - if (!m_vao.isCreated()) - m_vao.create(); - - QOpenGLVertexArrayObject::Binder binder(&m_vao); - - if (!m_vertex_buffer.isCreated()) { - m_vertex_buffer.create(); - m_vertex_buffer.bind(); - m_vertex_buffer.allocate(vertices, sizeof(vertices)); - m_vertex_buffer.release(); - } - - if (!m_program) { - m_program.reset(new QOpenGLShaderProgram); - m_program->create(); - m_vertex_shader.reset(new QOpenGLShader(QOpenGLShader::Vertex)); - if (!m_vertex_shader->compileSourceCode(vertex_shader)) { - qWarning() << "Failed to compile the vertex shader:" << m_vertex_shader->log(); - } - if (!m_program->addShader(m_vertex_shader.get())) { - qWarning() << "Failed to add vertex shader to program:" << m_program->log(); - } - } - - if (!m_fragment_shader && m_recompile_shaders) { - QByteArray data; - if (m_fragment_file.size()) { - QFile file(m_fragment_file); - if (file.open(QIODevice::ReadOnly)) { - data = file.readAll(); - } else { - qWarning() << "Failed to load input file, falling back to default"; - data = QByteArray::fromRawData(fragment_shader, sizeof(fragment_shader)); - } - } else { - QFile qrcFile(":/background.frag"); - if (qrcFile.open(QIODevice::ReadOnly)) - data = qrcFile.readAll(); - else - data = QByteArray::fromRawData(fragment_shader, sizeof(fragment_shader)); - } - if (data.size()) { - m_fragment_shader.reset(new QOpenGLShader(QOpenGLShader::Fragment)); - if (!m_fragment_shader->compileSourceCode(data)) { - qWarning() << "Failed to compile fragment shader:" << m_fragment_shader->log(); - m_fragment_shader.reset(nullptr); - } - } else { - qWarning() << "Unknown error, no fragment shader"; - } - - if (m_fragment_shader) { - if (!m_program->addShader(m_fragment_shader.get())) { - qWarning() << "Failed to add fragment shader to program:" << m_program->log(); - } - } - } - - if (m_recompile_shaders) { - m_recompile_shaders = false; - - if (m_program->link()) { - m_vertex_coord_pos = m_program->attributeLocation("vertexCoord"); - } else { - qWarning() << "Failed to link shader program" << m_program->log(); - } - - } - - if (!m_program->isLinked()) - return; - - m_program->bind(); - - m_vertex_buffer.bind(); - m_program->setAttributeBuffer("vertexCoord", GL_FLOAT, 0, 3, 0); - m_program->enableAttributeArray("vertexCoord"); - m_vertex_buffer.release(); - - m_program->setUniformValue("currentTime", (uint) QDateTime::currentMSecsSinceEpoch()); - m_program->setUniformValue("windowSize", windowSize); - - QOpenGLContext::currentContext()->functions()->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); - - m_program->release(); -} - -void FragmentToy::fileChanged(const QString &path) -{ - Q_UNUSED(path); - if (QFile::exists(m_fragment_file)) { - QFileInfo fragment_source(m_fragment_file); - if (fragment_source.lastModified() > m_fragment_file_last_modified) { - m_fragment_file_last_modified = fragment_source.lastModified(); - m_recompile_shaders = true; - if (m_program) { - m_program->removeShader(m_fragment_shader.get()); - m_fragment_shader.reset(nullptr); - } - } - } else { - m_recompile_shaders = true; - if (m_program) { - m_program->removeShader(m_fragment_shader.get()); - m_fragment_shader.reset(nullptr); - } - } -} diff --git a/examples/opengl/qopenglwindow/background_renderer.h b/examples/opengl/qopenglwindow/background_renderer.h deleted file mode 100644 index 0e3caf5981..0000000000 --- a/examples/opengl/qopenglwindow/background_renderer.h +++ /dev/null @@ -1,93 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef FRAGMENT_TOY_H -#define FRAGMENT_TOY_H - -#include <QObject> -#include <QFile> -#include <QDateTime> -#if QT_CONFIG(filesystemwatcher) -#include <QFileSystemWatcher> -#endif -#include <QOpenGLVertexArrayObject> -#include <QOpenGLBuffer> -#include <QOpenGLShaderProgram> -#include <QOpenGLFunctions> - -#include <memory> - -class FragmentToy : public QObject, protected QOpenGLFunctions -{ - Q_OBJECT -public: - explicit FragmentToy(const QString &fragmentSource, QObject *parent = nullptr); - ~FragmentToy(); - - void draw(const QSize &windowSize); - -private: - void fileChanged(const QString &path); - bool m_recompile_shaders; -#if QT_CONFIG(filesystemwatcher) - QFileSystemWatcher m_watcher; -#endif - QString m_fragment_file; - QDateTime m_fragment_file_last_modified; - - std::unique_ptr<QOpenGLShaderProgram> m_program; - std::unique_ptr<QOpenGLShader> m_vertex_shader; - std::unique_ptr<QOpenGLShader> m_fragment_shader; - QOpenGLVertexArrayObject m_vao; - QOpenGLBuffer m_vertex_buffer; - GLuint m_vertex_coord_pos; -}; - -#endif //FRAGMENT_TOY_H diff --git a/examples/opengl/qopenglwindow/main.cpp b/examples/opengl/qopenglwindow/main.cpp deleted file mode 100644 index 7ce4dd0977..0000000000 --- a/examples/opengl/qopenglwindow/main.cpp +++ /dev/null @@ -1,201 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <QOpenGLWindow> -#include <QScreen> -#include <QPainter> -#include <QPainterPath> -#include <QGuiApplication> -#include <QMatrix4x4> -#include <QStaticText> -#include <QKeyEvent> - -#include "background_renderer.h" - -static QPainterPath painterPathForTriangle() -{ - static const QPointF bottomLeft(-1.0, -1.0); - static const QPointF top(0.0, 1.0); - static const QPointF bottomRight(1.0, -1.0); - - QPainterPath path(bottomLeft); - path.lineTo(top); - path.lineTo(bottomRight); - path.closeSubpath(); - return path; -} - -class OpenGLWindow : public QOpenGLWindow -{ - Q_OBJECT - -public: - OpenGLWindow(); - -protected: - void paintGL() override; - void resizeGL(int w, int h) override; - void keyPressEvent(QKeyEvent *e) override; - -private: - void setAnimating(bool enabled); - - QMatrix4x4 m_window_normalised_matrix; - QMatrix4x4 m_window_painter_matrix; - QMatrix4x4 m_projection; - QMatrix4x4 m_view; - QMatrix4x4 m_model_triangle; - QMatrix4x4 m_model_text; - - FragmentToy m_fragment_toy; - QStaticText m_text_layout; - bool m_animate; -}; - -// Use NoPartialUpdate. This means that all the rendering goes directly to -// the window surface, no additional framebuffer object stands in the -// middle. This is fine since we will clear the entire framebuffer on each -// paint. Under the hood this means that the behavior is equivalent to the -// manual makeCurrent - perform OpenGL calls - swapBuffers loop that is -// typical in pure QWindow-based applications. -OpenGLWindow::OpenGLWindow() - : QOpenGLWindow(QOpenGLWindow::NoPartialUpdate) - , m_fragment_toy("./background.frag") - , m_text_layout("The triangle and this text is rendered with QPainter") - , m_animate(true) -{ - setGeometry(300, 300, 500, 500); - - m_view.lookAt(QVector3D(3,1,1), - QVector3D(0,0,0), - QVector3D(0,1,0)); - - setAnimating(m_animate); -} - -void OpenGLWindow::paintGL() -{ - m_fragment_toy.draw(size()); - - QPainter p(this); - p.setWorldTransform(m_window_normalised_matrix.toTransform()); - - QMatrix4x4 mvp = m_projection * m_view * m_model_triangle; - p.setTransform(mvp.toTransform(), true); - - p.fillPath(painterPathForTriangle(), QBrush(QGradient(QGradient::NightFade))); - - QTransform text_transform = (m_window_painter_matrix * m_view * m_model_text).toTransform(); - p.setTransform(text_transform, false); - p.setPen(QPen(Qt::black)); - m_text_layout.prepare(text_transform); - qreal x = - (m_text_layout.size().width() / 2); - qreal y = 0; - p.drawStaticText(x, y, m_text_layout); - - m_model_triangle.rotate(-1, 0, 1, 0); - m_model_text.rotate(1, 0, 1, 0); -} - -void OpenGLWindow::resizeGL(int w, int h) -{ - m_window_normalised_matrix.setToIdentity(); - m_window_normalised_matrix.translate(w / 2.0, h / 2.0); - m_window_normalised_matrix.scale(w / 2.0, -h / 2.0); - - m_window_painter_matrix.setToIdentity(); - m_window_painter_matrix.translate(w / 2.0, h / 2.0); - - m_text_layout.setTextWidth(std::max(w * 0.2, 80.0)); - - m_projection.setToIdentity(); - m_projection.perspective(45.f, qreal(w) / qreal(h), 0.1f, 100.f); -} - -void OpenGLWindow::keyPressEvent(QKeyEvent *e) -{ - if (e->key() == Qt::Key_P) { // pause - m_animate = !m_animate; - setAnimating(m_animate); - } -} - -void OpenGLWindow::setAnimating(bool enabled) -{ - if (enabled) { - // Animate continuously, throttled by the blocking swapBuffers() call the - // QOpenGLWindow internally executes after each paint. Once that is done - // (frameSwapped signal is emitted), we schedule a new update. This - // obviously assumes that the swap interval (see - // QSurfaceFormat::setSwapInterval()) is non-zero. - connect(this, &QOpenGLWindow::frameSwapped, - this, QOverload<>::of(&QPaintDeviceWindow::update)); - update(); - } else { - disconnect(this, &QOpenGLWindow::frameSwapped, - this, QOverload<>::of(&QPaintDeviceWindow::update)); - } -} - -int main(int argc, char **argv) -{ - QGuiApplication app(argc, argv); - - OpenGLWindow window; - QSurfaceFormat fmt; - fmt.setDepthBufferSize(24); - fmt.setStencilBufferSize(8); - window.setFormat(fmt); - window.show(); - - return app.exec(); -} - -#include "main.moc" diff --git a/examples/opengl/qopenglwindow/qopenglwindow.pro b/examples/opengl/qopenglwindow/qopenglwindow.pro deleted file mode 100644 index e7073a324b..0000000000 --- a/examples/opengl/qopenglwindow/qopenglwindow.pro +++ /dev/null @@ -1,16 +0,0 @@ -TEMPLATE = app -TARGET = qopenglwindow -INCLUDEPATH += . -QT += opengl - -RESOURCES += shaders.qrc - -SOURCES += \ - main.cpp \ - background_renderer.cpp - -HEADERS += \ - background_renderer.h - -target.path = $$[QT_INSTALL_EXAMPLES]/opengl/qopenglwindow -INSTALLS += target diff --git a/examples/opengl/qopenglwindow/shaders.qrc b/examples/opengl/qopenglwindow/shaders.qrc deleted file mode 100644 index 64eefe2c70..0000000000 --- a/examples/opengl/qopenglwindow/shaders.qrc +++ /dev/null @@ -1,5 +0,0 @@ -<!DOCTYPE RCC><RCC version="1.0"> -<qresource> - <file>background.frag</file> -</qresource> -</RCC> |