--- /dev/null
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Digia Plc and its Subsidiary(-ies) 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+
+Text {
+ font.pixelSize: 26
+ style: Text.Outline; styleColor: "white"
+ anchors.horizontalCenter: parent.horizontalCenter
+ anchors.bottom: parent.bottom
+ anchors.bottomMargin: 20
+}
--- /dev/null
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the demonstration applications 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 Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional
+** rights. These rights are described in the Digia 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "etcprovider.h"
+
+#include <QFile>
+#include <QDebug>
+#include <qopenglfunctions.h>
+
+//#define ETC_DEBUG
+
+#ifndef GL_ETC1_RGB8_OES
+ #define GL_ETC1_RGB8_OES 0x8d64
+#endif
+
+typedef struct {
+ char aName[6];
+ unsigned short iBlank;
+ /* NB: Beware endianness issues here. */
+ unsigned char iPaddedWidthMSB;
+ unsigned char iPaddedWidthLSB;
+ unsigned char iPaddedHeightMSB;
+ unsigned char iPaddedHeightLSB;
+ unsigned char iWidthMSB;
+ unsigned char iWidthLSB;
+ unsigned char iHeightMSB;
+ unsigned char iHeightLSB;
+} ETCHeader;
+
+unsigned short getWidth(ETCHeader *pHeader)
+{
+ return (pHeader->iWidthMSB << 8) | pHeader->iWidthLSB;
+}
+
+unsigned short getHeight(ETCHeader *pHeader)
+{
+ return (pHeader->iHeightMSB << 8) | pHeader->iHeightLSB;
+}
+
+unsigned short getPaddedWidth(ETCHeader *pHeader)
+{
+ return (pHeader->iPaddedWidthMSB << 8) | pHeader->iPaddedWidthLSB;
+}
+
+unsigned short getPaddedHeight(ETCHeader *pHeader)
+{
+ return (pHeader->iPaddedHeightMSB << 8) | pHeader->iPaddedHeightLSB;
+}
+
+EtcTexture::EtcTexture()
+ : m_texture_id(0)
+{
+
+}
+
+EtcTexture::~EtcTexture()
+{
+ if (m_texture_id)
+ glDeleteTextures(1, &m_texture_id);
+}
+
+void EtcTexture::bind()
+{
+ if (m_texture_id) {
+ glBindTexture(GL_TEXTURE_2D, m_texture_id);
+ return;
+ }
+
+ glGenTextures(1, &m_texture_id);
+ glBindTexture(GL_TEXTURE_2D, m_texture_id);
+
+#ifdef ETC_DEBUG
+ qDebug() << "glCompressedTexImage2D, width: " << m_size.width() << "height" << m_size.height() <<
+ "paddedWidth: " << m_paddedSize.width() << "paddedHeight: " << m_paddedSize.height();
+#endif
+
+ QOpenGLContext *ctx = QOpenGLContext::currentContext();
+ Q_ASSERT(ctx != 0);
+ ctx->functions()->glCompressedTexImage2D(GL_TEXTURE_2D, 0, GL_ETC1_RGB8_OES,
+ m_size.width(), m_size.height(), 0,
+ (m_paddedSize.width() * m_paddedSize.height()) >> 1,
+ m_data.data() + 16);
+
+ // Gracefully fail in case of an error...
+ GLuint error = glGetError();
+ if (error != GL_NO_ERROR) {
+ qDebug () << "glCompressedTexImage2D for compressed texture failed, error: " << error;
+ glBindTexture(GL_TEXTURE_2D, 0);
+ glDeleteTextures(1, &m_texture_id);
+ m_texture_id = 0;
+ return;
+ }
+
+ updateBindOptions(true);
+}
+
+class QEtcTextureFactory : public QQuickTextureFactory
+{
+public:
+ QByteArray m_data;
+ QSize m_size;
+ QSize m_paddedSize;
+
+ QSize textureSize() const { return m_size; }
+ int textureByteCount() const { return m_data.size(); }
+
+ QSGTexture *createTexture(QQuickWindow *) const {
+ EtcTexture *texture = new EtcTexture;
+ texture->m_data = m_data;
+ texture->m_size = m_size;
+ texture->m_paddedSize = m_paddedSize;
+ return texture;
+ }
+};
+
+QQuickTextureFactory *EtcProvider::requestTexture(const QString &id, QSize *size, const QSize &requestedSize)
+{
+ Q_UNUSED(requestedSize);
+ QEtcTextureFactory *ret = 0;
+
+ size->setHeight(0);
+ size->setWidth(0);
+
+ // resolve paths relative to qrc file
+ QFile file(QLatin1String(":/textureprovider/") + id);
+#ifdef ETC_DEBUG
+ qDebug() << "requestTexture opening file: " << id;
+#endif
+ if (file.open(QIODevice::ReadOnly)) {
+ ret = new QEtcTextureFactory;
+ ret->m_data = file.readAll();
+ if (!ret->m_data.isEmpty()) {
+ ETCHeader *pETCHeader = NULL;
+ pETCHeader = (ETCHeader *)ret->m_data.data();
+ size->setHeight(getHeight(pETCHeader));
+ size->setWidth(getWidth(pETCHeader));
+ ret->m_size = *size;
+ ret->m_paddedSize.setHeight(getPaddedHeight(pETCHeader));
+ ret->m_paddedSize.setWidth(getPaddedWidth(pETCHeader));
+ }
+ else {
+ delete ret;
+ ret = 0;
+ }
+ }
+
+#ifdef ETC_DEBUG
+ if (ret)
+ qDebug() << "requestTexture returning: " << ret->m_data.length() << ", bytes; width: " << size->width() << ", height: " << size->height();
+ else
+ qDebug () << "File not found.";
+#endif
+
+ return ret;
+}
--- /dev/null
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the demonstration applications 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 Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional
+** rights. These rights are described in the Digia 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef ETCPROVIDER_H
+#define ETCPROVIDER_H
+
+#include <qopengl.h>
+#include <QQuickImageProvider>
+#include <QtQuick/QSGTexture>
+
+class EtcProvider : public QQuickImageProvider
+{
+public:
+ EtcProvider()
+ : QQuickImageProvider(QQuickImageProvider::Texture)
+ {}
+
+ QQuickTextureFactory *requestTexture(const QString &id, QSize *size, const QSize &requestedSize);
+};
+
+class EtcTexture : public QSGTexture
+{
+ Q_OBJECT
+public:
+ EtcTexture();
+ ~EtcTexture();
+
+ void bind();
+
+ QSize textureSize() const { return m_size; }
+ int textureId() const { return m_texture_id; }
+
+ bool hasAlphaChannel() const { return false; }
+ bool hasMipmaps() const { return false; }
+
+ QByteArray m_data;
+ QSize m_size;
+ QSize m_paddedSize;
+ GLuint m_texture_id;
+};
+
+#endif // ETCPROVIDER_H
--- /dev/null
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Digia Plc and its Subsidiary(-ies) 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 <QGuiApplication>
+#include <QQuickView>
+
+#include "etcprovider.h"
+
+int main(int argc, char* argv[])
+{
+ QGuiApplication app(argc,argv);
+ QQuickView view;
+
+ view.engine()->addImageProvider("etc", new EtcProvider());
+
+ view.setSource(QUrl("qrc:///textureprovider/textureprovider.qml"));
+ view.show();
+ return app.exec();
+}
--- /dev/null
+TEMPLATE = app
+
+QT += quick qml
+
+HEADERS += etcprovider.h
+
+SOURCES += main.cpp \
+ etcprovider.cpp
+
+RESOURCES += textureprovider.qrc
+
+target.path = $$[QT_INSTALL_EXAMPLES]/quick/textureprovider
+INSTALLS += target
--- /dev/null
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Digia Plc and its Subsidiary(-ies) 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+
+Row {
+ width: 512
+ height: 256
+
+ Image {
+ source: "images/qt-logo.jpg"
+
+ Label { text: "Original Image" }
+ }
+
+ Image {
+ source: "image://etc/images/qt-logo.pkm"
+
+ Label { id: clabel; text: "Compressed Texture" }
+ Text {
+ text: "(requires ETC1 support)"
+ anchors.horizontalCenter: clabel.horizontalCenter
+ anchors.top: clabel.bottom
+ font.pixelSize: 14
+ color: "white"
+ }
+ }
+}
--- /dev/null
+<RCC>
+ <qresource prefix="/textureprovider">
+ <file>images/qt-logo.jpg</file>
+ <file>images/qt-logo.pkm</file>
+ <file>textureprovider.qml</file>
+ <file>Label.qml</file>
+ </qresource>
+</RCC>
projects / platform / upstream / qtdeclarative.git / commitdiff
