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Diffstat (limited to 'src/threed/textures/qgltexture2d.cpp')
| -rw-r--r-- | src/threed/textures/qgltexture2d.cpp | 805 |
1 files changed, 0 insertions, 805 deletions
diff --git a/src/threed/textures/qgltexture2d.cpp b/src/threed/textures/qgltexture2d.cpp deleted file mode 100644 index 07fe9891..00000000 --- a/src/threed/textures/qgltexture2d.cpp +++ /dev/null @@ -1,805 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtQuick3D 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 "qgltexture2d.h" -#include "qgltexture2d_p.h" -#include "qgltextureutils_p.h" -#include "qglpainter_p.h" -#include "qglext_p.h" -#include "qabstractdownloadmanager.h" -#include "qdownloadmanager.h" -#include "qthreadeddownloadmanager.h" -#include "qopenglfunctions.h" - -#include <QtCore/qfile.h> -#include <QtCore/qfileinfo.h> -#include <QImageReader> - -QT_BEGIN_NAMESPACE - -/*! - \class QGLTexture2D - \brief The QGLTexture2D class represents a 2D texture object for GL painting operations. - \since 4.8 - \ingroup qt3d - \ingroup qt3d::textures - - QGLTexture2D contains a QImage and settings for texture filters, - wrap modes, and mipmap generation. When bind() is called, this - information is uploaded to the GL server if it has changed since - the last time bind() was called. - - Once a QGLTexture2D object is created, it can be bound to multiple - GL contexts. Internally, a separate texture identifier is created - for each context. This makes QGLTexture2D easier to use than - raw GL texture identifiers because the application does not need - to be as concerned with whether the texture identifier is valid - in the current context. The application merely calls bind() and - QGLTexture2D will create a new texture identifier for the context - if necessary. - - QGLTexture2D internally points to a reference-counted object that - represents the current texture state. If the QGLTexture2D is copied, - the internal pointer is the same. Modifications to one QGLTexture2D - copy will affect all of the other copies in the system. - - The texture identifiers will be destroyed when the last QGLTexture2D - reference is destroyed, or when a context is destroyed that contained a - texture identifier that was created by QGLTexture2D. - - QGLTexture2D can also be used for uploading 1D textures into the - GL server by specifying an image() with a height of 1. - - \sa QGLTextureCube -*/ - -Q_GLOBAL_STATIC(QSize, getMaxImageSize) - -QGLTexture2DPrivate::ForcePowerOfTwo QGLTexture2DPrivate::forcePowerOfTwo = QGLTexture2DPrivate::ForcePowerOfTwoUndefined; - -QGLTexture2DPrivate::QGLTexture2DPrivate() -{ - horizontalWrap = QGL::Repeat; - verticalWrap = QGL::Repeat; - bindOptions = QGLContext::DefaultBindOption; -#if !defined(QT_OPENGL_ES) - mipmapSupported = false; - mipmapSupportedKnown = false; -#endif - imageGeneration = 0; - parameterGeneration = 0; - infos = 0; - downloadManager = 0; - - if (forcePowerOfTwo == ForcePowerOfTwoUndefined) { - if (qgetenv("NPOT_MIPMAP_UNSUPPORTED").toInt() == 1) - forcePowerOfTwo = ForcePowerOfTwoTrue; - else - forcePowerOfTwo = ForcePowerOfTwoFalse; - } -} - -QGLTexture2DPrivate::~QGLTexture2DPrivate() -{ - // Destroy the texture id's in the GL server in their original contexts. - QGLTexture2DTextureInfo *current = infos; - QGLTexture2DTextureInfo *next; - const QGLContext *currentContext = - const_cast<QGLContext *>(QGLContext::currentContext()); - const QGLContext *firstContext = currentContext; - while (current != 0) { - next = current->next; - if (current->isLiteral) - current->tex.clearId(); // Don't delete literal id's. - delete current; - current = next; - } - if (firstContext != currentContext) { - if (firstContext) - const_cast<QGLContext *>(firstContext)->makeCurrent(); - else if (currentContext) - const_cast<QGLContext *>(currentContext)->doneCurrent(); - } -} - -/*! - Constructs a null texture object and attaches it to \a parent. - - \sa isNull() -*/ -QGLTexture2D::QGLTexture2D(QObject *parent) - : QObject(parent), d_ptr(new QGLTexture2DPrivate()) -{ -} - -/*! - Destroys this texture object. If this object is the last - reference to the underlying GL texture, then the underlying - GL texture will also be deleted. -*/ -QGLTexture2D::~QGLTexture2D() -{ -} - -/*! - Returns true if this texture object is null; that is, image() - is null and textureId() is zero. -*/ -bool QGLTexture2D::isNull() const -{ - Q_D(const QGLTexture2D); - return d->image.isNull() && !d->infos; -} - -/*! - Returns true if this texture has an alpha channel; false if the - texture is fully opaque. -*/ -bool QGLTexture2D::hasAlphaChannel() const -{ - Q_D(const QGLTexture2D); - if (!d->image.isNull()) - return d->image.hasAlphaChannel(); - QGLTexture2DTextureInfo *info = d->infos; - if (info) - return info->tex.hasAlpha(); - return false; -} - -/*! - Returns the size of this texture. If the underlying OpenGL - implementation requires texture sizes to be a power of two, - then this function will return the next power of two equal - to or greater than requestedSize() - - \sa setSize(), requestedSize() -*/ -QSize QGLTexture2D::size() const -{ - Q_D(const QGLTexture2D); - return d->size; -} - -/*! - Sets the size of this texture to \a value. If the underlying - OpenGL implementation requires texture sizes to be a power of - two, then requestedSize() will be set to \a value, and the - actual size will be set to the next power of two equal - to or greater than \a value. Otherwise both size() and - requestedSize() will be set to \a value. - - \sa size(), requestedSize() -*/ -void QGLTexture2D::setSize(const QSize& value) -{ - Q_D(QGLTexture2D); - if (d->requestedSize == value) - return; - if (!(QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_2_0) - && !(QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_ES_Version_2_0)) - d->size = QGL::nextPowerOfTwo(value); - else - d->size = value; - d->requestedSize = value; - ++(d->imageGeneration); -} - -/*! - Returns the size that was previously set with setSize() before - it was rounded to a power of two. - - \sa size(), setSize() -*/ -QSize QGLTexture2D::requestedSize() const -{ - Q_D(const QGLTexture2D); - return d->requestedSize; -} - -/*! - Returns the image that is currently associated with this texture. - The image may not have been uploaded into the GL server yet. - Uploads occur upon the next call to bind(). - - \sa setImage() -*/ -QImage QGLTexture2D::image() const -{ - Q_D(const QGLTexture2D); - return d->image; -} - -/*! - Sets the \a image that is associated with this texture. The image - will be uploaded into the GL server the next time bind() is called. - - If setSize() or setImage() has been called previously, then \a image - will be scaled to size() when it is uploaded. - - If \a image is null, then this function is equivalent to clearImage(). - - \sa image(), setSize(), copyImage(), setPixmap() -*/ -void QGLTexture2D::setImage(const QImage& image) -{ - Q_D(QGLTexture2D); - d->compressedData = QByteArray(); // Clear compressed file data. - if (image.isNull()) { - // Don't change the imageGeneration, because we aren't actually - // changing the image in the GL server, only the client copy. - d->image = image; - } else { - if (image.size().isValid()) - setSize(image.size()); - d->image = image; - ++(d->imageGeneration); - } -} - -/*! - Sets the image that is associated with this texture to \a pixmap. - - This is a convenience that calls setImage() after converting - \a pixmap into a QImage. It may be more efficient on some - platforms than the application calling QPixmap::toImage(). - - \sa setImage() -*/ -void QGLTexture2D::setPixmap(const QPixmap& pixmap) -{ - QImage image = pixmap.toImage(); - if (pixmap.depth() == 16 && !image.hasAlphaChannel()) { - // If the system depth is 16 and the pixmap doesn't have an alpha channel - // then we convert it to RGB16 in the hope that it gets uploaded as a 16 - // bit texture which is much faster to access than a 32-bit one. - image = image.convertToFormat(QImage::Format_RGB16); - } - setImage(image); -} - -/*! - Clears the image() that is associated with this texture, but the - GL texture will retain its current value. This can be used to - release client-side memory that is no longer required once the - image has been uploaded into the GL server. - - The following code will queue \c image to be uploaded, immediately - force it to be uploaded into the current GL context, and then - clear the client copy: - - \code - texture.setImage(image); - texture.bind(); - texture.clearImage() - \endcode - - \sa image(), setImage() -*/ -void QGLTexture2D::clearImage() -{ - Q_D(QGLTexture2D); - d->image = QImage(); -} - -#ifndef GL_GENERATE_MIPMAP_SGIS -#define GL_GENERATE_MIPMAP_SGIS 0x8191 -#define GL_GENERATE_MIPMAP_HINT_SGIS 0x8192 -#endif - -/*! - Sets this texture to the contents of a compressed image file - at \a path. Returns true if the file exists and has a supported - compressed format; false otherwise. - - The DDS, ETC1, PVRTC2, and PVRTC4 compression formats are - supported, assuming that the GL implementation has the - appropriate extension. - - \sa setImage(), setSize() -*/ -bool QGLTexture2D::setCompressedFile(const QString &path) -{ - Q_D(QGLTexture2D); - d->image = QImage(); - QFile f(path); - if (!f.open(QIODevice::ReadOnly)) - { - qWarning("QGLTexture2D::setCompressedFile(%s): File could not be read", - qPrintable(path)); - return false; - } - QByteArray data = f.readAll(); - f.close(); - - bool hasAlpha, isFlipped; - if (!QGLBoundTexture::canBindCompressedTexture - (data.constData(), data.size(), 0, &hasAlpha, &isFlipped)) { - qWarning("QGLTexture2D::setCompressedFile(%s): Format is not supported", - path.toLocal8Bit().constData()); - return false; - } - - QFileInfo fi(path); - d->url = QUrl::fromLocalFile(fi.absoluteFilePath()); - - // The 3DS loader expects the flip state to be set before bind(). - if (isFlipped) - d->bindOptions &= ~QGLContext::InvertedYBindOption; - else - d->bindOptions |= QGLContext::InvertedYBindOption; - - d->compressedData = data; - ++(d->imageGeneration); - return true; -} - -/*! - Returns the url that was last set with setUrl. -*/ -QUrl QGLTexture2D::url() const -{ - Q_D(const QGLTexture2D); - return d->url; -} - -/*! - Sets this texture to have the contents of the image stored at \a url. - - If the environment variable QT3D_MULTITHREAD is defined, network urls - (http, etc) are downloaded in a separate download thread, otherwise they are - downloaded asynchronously in the current thread. -*/ -void QGLTexture2D::setUrl(const QUrl &url) -{ - Q_D(QGLTexture2D); - if (d->url == url) - return; - d->url = url; - - if (url.isEmpty()) - { - d->image = QImage(); - } - else - { - if (url.scheme() == QLatin1String("file") || url.scheme().toLower() == QLatin1String("qrc")) - { - QString fileName = url.toLocalFile(); - - // slight hack since there doesn't appear to be a QUrl::toResourcePath() function - // to convert qrc:///foo into :/foo - if (url.scheme().toLower() == QLatin1String("qrc")) { - // strips off any qrc: prefix and any excess slashes and replaces it with :/ - QUrl tempUrl(url); - tempUrl.setScheme(""); - fileName = QLatin1String(":")+tempUrl.toString(); - } - - if (fileName.endsWith(QLatin1String(".dds"), Qt::CaseInsensitive)) - { - setCompressedFile(fileName); - } - else - { - QImageReader imgReader; - imgReader.setFileName(fileName); - - if (!getMaxImageSize()->isValid()) { - imgReader.setScaledSize(imgReader.size().boundedTo(*getMaxImageSize())); - } - - QImage im = imgReader.read(); - if (im.isNull()) - qWarning("Could not load texture: %s", qPrintable(fileName)); - setImage(im); - } - } - else - { - if (!d->downloadManager) { - if (getenv(QT3D_MULTITHREAD)) { - //Download in a multithreaded environment - d->downloadManager = new QThreadedDownloadManager(); - } else { - //Download in a single threaded environment - d->downloadManager = new QDownloadManager(); - } - connect (d->downloadManager,SIGNAL(downloadComplete(QByteArray)),this, SLOT(textureRequestFinished(QByteArray))); - } - - //Create a temporary image that will be used until the Url is loaded. - static QImage tempImg(128,128, QImage::Format_RGB32); - QColor fillcolor(Qt::gray); - tempImg.fill(fillcolor.rgba()); - setImage(tempImg); - - if (!d->downloadManager->beginDownload(QUrl(url.toString()))) { - qWarning("Unable to issue texture download request."); - } - } - } -} - -/*! - Copies the contents of \a image to \a offset in this texture - within the current GL context. - - Unlike setImage(), this function copies the image data to the - GL server immediately using \c{glTexSubImage2D()}. This is typically - used to update the contents of a texture after it has been created. - - It is assumed that the application has already called bind() on - this texture to bind it to the current GL context. - - If the texture has been created in multiple contexts, only the - texture identifier for the current context will be updated. - - \sa setImage(), bind() -*/ -void QGLTexture2D::copyImage(const QImage& image, const QPoint& offset) -{ - QImage img = QGLWidget::convertToGLFormat(image); - glTexSubImage2D(GL_TEXTURE_2D, 0, offset.x(), offset.y(), - img.width(), img.height(), GL_RGBA, - GL_UNSIGNED_BYTE, img.bits()); -#if defined(QT_OPENGL_ES_2) - Q_D(QGLTexture2D); - if (d->bindOptions & QGLContext::MipmapBindOption) - glGenerateMipmap(GL_TEXTURE_2D); -#endif -} - -/*! - Returns the options to use when binding the image() to an OpenGL - context for the first time. The default options are - QGLContext::LinearFilteringBindOption | - QGLContext::InvertedYBindOption | QGLContext::MipmapBindOption. - - \sa setBindOptions() -*/ -QGLContext::BindOptions QGLTexture2D::bindOptions() const -{ - Q_D(const QGLTexture2D); - return d->bindOptions; -} - -/*! - Sets the \a options to use when binding the image() to an - OpenGL context. If the image() has already been bound, - then changing the options will cause it to be recreated - from image() the next time bind() is called. - - \sa bindOptions(), bind() -*/ -void QGLTexture2D::setBindOptions(QGLContext::BindOptions options) -{ - Q_D(QGLTexture2D); - if (d->bindOptions != options) { - d->bindOptions = options; - ++(d->imageGeneration); - } -} - -/*! - Returns the wrapping mode for horizontal texture co-ordinates. - The default value is QGL::Repeat. - - \sa setHorizontalWrap(), verticalWrap() -*/ -QGL::TextureWrap QGLTexture2D::horizontalWrap() const -{ - Q_D(const QGLTexture2D); - return d->horizontalWrap; -} - -/*! - Sets the wrapping mode for horizontal texture co-ordinates to \a value. - - If \a value is not supported by the OpenGL implementation, it will be - replaced with a value that is supported. If the application desires a - very specific \a value, it can call horizontalWrap() to check that - the specific value was actually set. - - The \a value will not be applied to the texture in the GL - server until the next call to bind(). - - \sa horizontalWrap(), setVerticalWrap() -*/ -void QGLTexture2D::setHorizontalWrap(QGL::TextureWrap value) -{ - Q_D(QGLTexture2D); - value = qt_gl_modify_texture_wrap(value); - if (d->horizontalWrap != value) { - d->horizontalWrap = value; - ++(d->parameterGeneration); - } -} - -/*! - Returns the wrapping mode for vertical texture co-ordinates. - The default value is QGL::Repeat. - - \sa setVerticalWrap(), horizontalWrap() -*/ -QGL::TextureWrap QGLTexture2D::verticalWrap() const -{ - Q_D(const QGLTexture2D); - return d->verticalWrap; -} - -/*! - Sets the wrapping mode for vertical texture co-ordinates to \a value. - - If \a value is not supported by the OpenGL implementation, it will be - replaced with a value that is supported. If the application desires a - very specific \a value, it can call verticalWrap() to check that - the specific value was actually set. - - The \a value will not be applied to the texture in the GL - server until the next call to bind(). - - \sa verticalWrap(), setHorizontalWrap() -*/ -void QGLTexture2D::setVerticalWrap(QGL::TextureWrap value) -{ - Q_D(QGLTexture2D); - value = qt_gl_modify_texture_wrap(value); - if (d->verticalWrap != value) { - d->verticalWrap = value; - ++(d->parameterGeneration); - } -} - -/*! - Binds this texture to the 2D texture target. - - If this texture object is not associated with an identifier in - the current context, then a new identifier will be created, - and image() uploaded into the GL server. - - If setImage() or setSize() was called since the last upload, - then image() will be re-uploaded to the GL server. - - Returns false if the texture could not be bound for some reason. - - \sa release(), textureId(), setImage() -*/ -bool QGLTexture2D::bind() const -{ - Q_D(const QGLTexture2D); - return const_cast<QGLTexture2DPrivate *>(d)->bind(GL_TEXTURE_2D); -} - -bool QGLTexture2DPrivate::bind(GLenum target) -{ - // Get the current context. If we don't have one, then we - // cannot bind the texture. - const QGLContext *ctx = QGLContext::currentContext(); - if (!ctx) - return false; - - QOpenGLFunctions glFuncs(ctx); - if (!glFuncs.hasOpenGLFeature(QOpenGLFunctions::NPOTTextures)) - { - QSize oldSize = size; - size = QGL::nextPowerOfTwo(size); - if (size != oldSize) - ++imageGeneration; - } - - // Find the information block for the context, or create one. - QGLTexture2DTextureInfo *info = infos; - QGLTexture2DTextureInfo *prev = 0; - while (info != 0 && !QGLContext::areSharing(info->tex.context(), ctx)) { - if (info->isLiteral) - return false; // Cannot create extra texture id's for literals. - prev = info; - info = info->next; - } - if (!info) { - info = new QGLTexture2DTextureInfo - (ctx, 0, imageGeneration - 1, parameterGeneration - 1); - if (prev) - prev->next = info; - else - infos = info; - } - - if (!info->tex.textureId() || imageGeneration != info->imageGeneration) { - // Create the texture contents and upload a new image. - info->tex.setOptions(bindOptions); - if (!compressedData.isEmpty()) { - info->tex.bindCompressedTexture - (compressedData.constData(), compressedData.size()); - } else { - info->tex.startUpload(ctx, target, image.size()); - bindImages(info); - info->tex.finishUpload(target); - } - info->imageGeneration = imageGeneration; - } else { - // Bind the existing texture to the texture target. - glBindTexture(target, info->tex.textureId()); - } - - // If the parameter generation has changed, then alter the parameters. - if (parameterGeneration != info->parameterGeneration) { - info->parameterGeneration = parameterGeneration; - q_glTexParameteri(target, GL_TEXTURE_WRAP_S, horizontalWrap); - q_glTexParameteri(target, GL_TEXTURE_WRAP_T, verticalWrap); - } - - // Texture is ready to be used. - return true; -} - -void QGLTexture2DPrivate::bindImages(QGLTexture2DTextureInfo *info) -{ - QSize scaledSize(size); -#if defined(QT_OPENGL_ES_2) - if ((bindOptions & QGLContext::MipmapBindOption) || - horizontalWrap != QGL::ClampToEdge || - verticalWrap != QGL::ClampToEdge) { - // ES 2.0 does not support NPOT textures when mipmaps are in use, - // or if the wrap mode isn't ClampToEdge. - scaledSize = QGL::nextPowerOfTwo(scaledSize); - } -#endif - - if (forcePowerOfTwo == ForcePowerOfTwoTrue) - scaledSize = QGL::nextPowerOfTwo(scaledSize); - - if (!image.isNull()) - info->tex.uploadFace(GL_TEXTURE_2D, image, scaledSize); - else if (size.isValid()) - info->tex.createFace(GL_TEXTURE_2D, scaledSize); -} - -/*! - Releases the texture associated with the 2D texture target. - This is equivalent to \c{glBindTexture(GL_TEXTURE_2D, 0)}. - - \sa bind() -*/ -void QGLTexture2D::release() const -{ - glBindTexture(GL_TEXTURE_2D, 0); -} - -/*! - Returns the identifier associated with this texture object in - the current context. - - Returns zero if the texture has not previously been bound to - the 2D texture target in the current context with bind(). - - \sa bind() -*/ -GLuint QGLTexture2D::textureId() const -{ - Q_D(const QGLTexture2D); - const QGLContext *ctx = QGLContext::currentContext(); - if (!ctx) - return 0; - QGLTexture2DTextureInfo *info = d->infos; - while (info != 0 && !QGLContext::areSharing(info->tex.context(), ctx)) - info = info->next; - return info ? info->tex.textureId() : 0; -} - -/*! - Constructs a QGLTexture2D object that wraps the supplied literal - texture identifier \a id, with the dimensions specified by \a size. - - The \a id is assumed to have been created by the application in - the current GL context, and it will be destroyed by the application - after the returned QGLTexture2D object is destroyed. - - This function is intended for interfacing to existing code that - uses raw GL texture identifiers. The returned QGLTexture2D can - only be used with the current GL context. - - \sa textureId() -*/ -QGLTexture2D *QGLTexture2D::fromTextureId(GLuint id, const QSize& size) -{ - const QGLContext *ctx = QGLContext::currentContext(); - if (!id || !ctx) - return 0; - - QGLTexture2D *texture = new QGLTexture2D(); - if (!size.isNull()) - texture->setSize(size); - QGLTexture2DTextureInfo *info = new QGLTexture2DTextureInfo - (ctx, id, texture->d_ptr->imageGeneration, - texture->d_ptr->parameterGeneration, true); - texture->d_ptr->infos = info; - return texture; -} - -/*! - This slot is used to recieve signals from the QDownloadManager class - which provides Url download capability across the network. - - A successful download will have a valid QByteArray stored in \a assetData, - while a failed download (due to network error, etc), will result in - a NULL value. - - Successful downloads use the image data downloaded into \a assetData, - which is converted to an image/texture, and emit a textureUpdated() - signal. - - \sa QDownloadManager -*/ -void QGLTexture2D::textureRequestFinished(QByteArray assetData) -{ - //Ensure valid asset data exists. - if (assetData.isEmpty()) { - qWarning("Network request failed. Texture not loaded."); - } else { - //Convert asset data to an image. - QImage texImage; - texImage.loadFromData(assetData); - setImage(texImage.mirrored()); - - emit textureUpdated(); - } -} - -/*! - Sets the maximum size of an image file loaded in a texture as being - of \a width x \a height in size. - - \sa setUrl() -*/ -void QGLTexture2D::setMaxImageSize(int width, int height) -{ - Q_ASSERT(width>0 && height>0); - (*getMaxImageSize()) = QSize(width, height); -} - -/*! - \fn QGLTexture2D::textureUpdated() - Signals that some property of this texture has changed in a manner - that may require that the parent material class be updated. -*/ - -QT_END_NAMESPACE |