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Diffstat (limited to 'examples/quick/textureprovider/etcprovider.cpp')
-rw-r--r-- | examples/quick/textureprovider/etcprovider.cpp | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/examples/quick/textureprovider/etcprovider.cpp b/examples/quick/textureprovider/etcprovider.cpp deleted file mode 100644 index f542d510b2..0000000000 --- a/examples/quick/textureprovider/etcprovider.cpp +++ /dev/null @@ -1,238 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the demonstration applications 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 "etcprovider.h" - -#include <QFile> -#include <QDebug> -#include <qopenglfunctions.h> -#include <qqmlfile.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), m_uploaded(false) -{ - initializeOpenGLFunctions(); -} - -EtcTexture::~EtcTexture() -{ - if (m_texture_id) - glDeleteTextures(1, &m_texture_id); -} - -int EtcTexture::textureId() const -{ - if (m_texture_id == 0) { - EtcTexture *texture = const_cast<EtcTexture*>(this); - texture->glGenTextures(1, &texture->m_texture_id); - } - return m_texture_id; -} - -int EtcTexture::comparisonKey() const -{ - if (m_texture_id) - return m_texture_id; - - // two textures (and so materials) with not-yet-created texture underneath are never equal - return int(qintptr(this)); -} - -void EtcTexture::bind() -{ - if (m_uploaded && m_texture_id) { - glBindTexture(GL_TEXTURE_2D, m_texture_id); - return; - } - - if (m_texture_id == 0) - 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 - -#ifndef QT_NO_DEBUG - while (glGetError() != GL_NO_ERROR) { } -#endif - - QOpenGLContext *ctx = QOpenGLContext::currentContext(); - Q_ASSERT(ctx != nullptr); - 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); - -#ifndef QT_NO_DEBUG - // 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; - } -#endif - - m_uploaded = true; - updateBindOptions(true); -} - -class QEtcTextureFactory : public QQuickTextureFactory -{ -public: - QByteArray m_data; - QSize m_size; - QSize m_paddedSize; - - QSize textureSize() const override { return m_size; } - int textureByteCount() const override { return m_data.size(); } - - QSGTexture *createTexture(QQuickWindow *) const override { - 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 = nullptr; - - size->setHeight(0); - size->setWidth(0); - - QUrl url = QUrl(id); - if (url.isRelative() && !m_baseUrl.isEmpty()) - url = m_baseUrl.resolved(url); - QString path = QQmlFile::urlToLocalFileOrQrc(url); - - QFile file(path); -#ifdef ETC_DEBUG - qDebug() << "requestTexture opening file: " << path; -#endif - if (file.open(QIODevice::ReadOnly)) { - ret = new QEtcTextureFactory; - ret->m_data = file.readAll(); - if (!ret->m_data.isEmpty()) { - ETCHeader *pETCHeader = nullptr; - 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 = nullptr; - } - } - -#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; -} - -void EtcProvider::setBaseUrl(const QUrl &base) -{ - m_baseUrl = base; -} |