diff options
Diffstat (limited to 'src/declarative/scenegraph/util/qsgtexture.cpp')
| -rw-r--r-- | src/declarative/scenegraph/util/qsgtexture.cpp | 541 |
1 files changed, 0 insertions, 541 deletions
diff --git a/src/declarative/scenegraph/util/qsgtexture.cpp b/src/declarative/scenegraph/util/qsgtexture.cpp deleted file mode 100644 index e2219e54f5..0000000000 --- a/src/declarative/scenegraph/util/qsgtexture.cpp +++ /dev/null @@ -1,541 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtDeclarative 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. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#define GL_GLEXT_PROTOTYPES - -#include <private/qsgtexture_p.h> -#include <qopenglfunctions.h> -#include <private/qsgcontext_p.h> -#include <qthread.h> -#include <private/qdeclarativedebugtrace_p.h> - -#if !defined(QT_NO_DEBUG) && (defined(Q_OS_LINUX) || defined(Q_OS_MAC)) -#include <execinfo.h> -#include <QHash> -#endif - -QT_BEGIN_NAMESPACE - -inline static bool isPowerOfTwo(int x) -{ - // Assumption: x >= 1 - return x == (x & -x); -} - -QSGTexturePrivate::QSGTexturePrivate() - : wrapChanged(false) - , filteringChanged(false) - , horizontalWrap(QSGTexture::ClampToEdge) - , verticalWrap(QSGTexture::ClampToEdge) - , mipmapMode(QSGTexture::None) - , filterMode(QSGTexture::Nearest) -{ -} - -#ifndef QT_NO_DEBUG - -static int qt_debug_texture_count = 0; - -#if defined(Q_OS_LINUX) || defined (Q_OS_MAC) -DEFINE_BOOL_CONFIG_OPTION(qmlDebugLeakBacktrace, QML_DEBUG_LEAK_BACKTRACE) - -#define BACKTRACE_SIZE 20 -class SGTextureTraceItem -{ -public: - void *backTrace[BACKTRACE_SIZE]; - size_t backTraceSize; -}; - -static QHash<QSGTexture*, SGTextureTraceItem*> qt_debug_allocated_textures; -#endif - -inline static void qt_debug_print_texture_count() -{ - qDebug("Number of leaked textures: %i", qt_debug_texture_count); - qt_debug_texture_count = -1; - -#if defined(Q_OS_LINUX) || defined (Q_OS_MAC) - if (qmlDebugLeakBacktrace()) { - while (!qt_debug_allocated_textures.isEmpty()) { - QHash<QSGTexture*, SGTextureTraceItem*>::Iterator it = qt_debug_allocated_textures.begin(); - QSGTexture* texture = it.key(); - SGTextureTraceItem* item = it.value(); - - qt_debug_allocated_textures.erase(it); - - qDebug() << "------"; - qDebug() << "Leaked" << texture << "backtrace:"; - - char** symbols = backtrace_symbols(item->backTrace, item->backTraceSize); - - if (symbols) { - for (int i=0; i<(int) item->backTraceSize; i++) - qDebug("Backtrace <%02d>: %s", i, symbols[i]); - free(symbols); - } - - qDebug() << "------"; - - delete item; - } - } -#endif -} - -inline static void qt_debug_add_texture(QSGTexture* texture) -{ -#if defined(Q_OS_LINUX) || defined (Q_OS_MAC) - if (qmlDebugLeakBacktrace()) { - SGTextureTraceItem* item = new SGTextureTraceItem; - item->backTraceSize = backtrace(item->backTrace, BACKTRACE_SIZE); - qt_debug_allocated_textures.insert(texture, item); - } -#else - Q_UNUSED(texture); -#endif // Q_OS_LINUX - - ++qt_debug_texture_count; - - static bool atexit_registered = false; - if (!atexit_registered) { - atexit(qt_debug_print_texture_count); - atexit_registered = true; - } -} - -static void qt_debug_remove_texture(QSGTexture* texture) -{ -#if defined(Q_OS_LINUX) || defined (Q_OS_MAC) - if (qmlDebugLeakBacktrace()) { - SGTextureTraceItem* item = qt_debug_allocated_textures.value(texture, 0); - if (item) { - qt_debug_allocated_textures.remove(texture); - delete item; - } - } -#else - Q_UNUSED(texture) -#endif - - --qt_debug_texture_count; - - if (qt_debug_texture_count < 0) - qDebug("Material destroyed after qt_debug_print_texture_count() was called."); -} - -#endif // QT_NO_DEBUG - - -QSGTexture::QSGTexture() - : QObject(*(new QSGTexturePrivate)) -{ -#ifndef QT_NO_DEBUG - qt_debug_add_texture(this); -#endif -} - -QSGTexture::~QSGTexture() -{ -#ifndef QT_NO_DEBUG - qt_debug_remove_texture(this); -#endif -} - - -/*! - \fn void QSGTexture::bind() - - Call this function to bind this texture to the current texture - target. - - Binding a texture may also include uploading the texture data from - a previously set QImage. - - \warning This function can only be called from the rendering thread. - */ - -/*! - This function returns a copy of the current texture which is removed - from its atlas. - - The current texture remains unchanged, so texture coordinates do not - need to be updated. - - Removing a texture from an atlas is primarily useful when passing - it to a shader that operates on the texture coordinates 0-1 instead - of the texture subrect inside the atlas. - - If the texture is not part of a texture atlas, this function returns 0. - - Implementations of this function are recommended to return the same instance - for multiple calls to limit memory usage. - - \warning This function can only be called from the rendering thread. - */ - -QSGTexture *QSGTexture::removedFromAtlas() const -{ - Q_ASSERT_X(!isAtlasTexture(), "QSGTexture::removedFromAtlas()", "Called on a non-atlas texture"); - return 0; -} - -/*! - Returns weither this texture is part of an atlas or not. - - The default implementation returns false. - */ -bool QSGTexture::isAtlasTexture() const -{ - return false; -} - -/*! - \fn int QSGTexture::textureId() const - - Returns the OpenGL texture id for this texture. - - The default value is 0, indicating that it is an invalid texture id. - - The function should at all times return the correct texture id. - - \warning This function can only be called from the rendering thread. - */ - - - -/*! - Returns the rectangle inside textureSize() that this texture - represents in normalized coordinates. - - The default implementation returns a rect at position (0, 0) with - width and height of 1. - */ -QRectF QSGTexture::textureSubRect() const -{ - return QRectF(0, 0, 1, 1); -} - -/*! - \fn bool QSGTexture::hasMipmaps() const - - Returns true if the texture data contains mipmap levels. - */ - - -/*! - Sets the mipmap sampling mode to be used for the upcoming bind() call to \a filter. - - Setting the mipmap filtering has no effect it the texture does not have mipmaps. - - \sa hasMipmaps() - */ -void QSGTexture::setMipmapFiltering(Filtering filter) -{ - Q_D(QSGTexture); - if (d->mipmapMode != (uint) filter) { - d->mipmapMode = filter; - d->filteringChanged = true; - } -} - -/*! - Returns whether mipmapping should be used when sampling from this texture. - */ -QSGTexture::Filtering QSGTexture::mipmapFiltering() const -{ - return (QSGTexture::Filtering) d_func()->mipmapMode; -} - - -/*! - Sets the sampling mode to be used for the upcoming bind() call to \a filter. - */ -void QSGTexture::setFiltering(QSGTexture::Filtering filter) -{ - Q_D(QSGTexture); - if (d->filterMode != (uint) filter) { - d->filterMode = filter; - d->filteringChanged = true; - } -} - -QSGTexture::Filtering QSGTexture::filtering() const -{ - return (QSGTexture::Filtering) d_func()->filterMode; -} - - - -/*! - Sets the horizontal wrap mode to be used for the upcoming bind() call to \a hwrap - */ - -void QSGTexture::setHorizontalWrapMode(WrapMode hwrap) -{ - Q_D(QSGTexture); - if ((uint) hwrap != d->horizontalWrap) { - d->horizontalWrap = hwrap; - d->wrapChanged = true; - } -} - -QSGTexture::WrapMode QSGTexture::horizontalWrapMode() const -{ - return (QSGTexture::WrapMode) d_func()->horizontalWrap; -} - - - -void QSGTexture::setVerticalWrapMode(WrapMode vwrap) -{ - Q_D(QSGTexture); - if ((uint) vwrap != d->verticalWrap) { - d->verticalWrap = vwrap; - d->wrapChanged = true; - } -} - -QSGTexture::WrapMode QSGTexture::verticalWrapMode() const -{ - return (QSGTexture::WrapMode) d_func()->verticalWrap; -} - - -/*! - Update the texture state to match the filtering, mipmap and wrap options - currently set. - - If \a force is true, all properties will be updated regardless of weither - they have changed or not. - */ -void QSGTexture::updateBindOptions(bool force) -{ - Q_D(QSGTexture); - if (force || d->filteringChanged) { - bool linear = d->filterMode == Linear; - GLint minFilter = linear ? GL_LINEAR : GL_NEAREST; - GLint magFilter = linear ? GL_LINEAR : GL_NEAREST; - - if (hasMipmaps()) { - if (d->mipmapMode == Nearest) - minFilter = linear ? GL_LINEAR_MIPMAP_NEAREST : GL_NEAREST_MIPMAP_NEAREST; - else if (d->mipmapMode == Linear) - minFilter = linear ? GL_LINEAR_MIPMAP_LINEAR : GL_NEAREST_MIPMAP_LINEAR; - } - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, minFilter); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, magFilter); - d->filteringChanged = false; - } - - if (force || d->wrapChanged) { -#if !defined(QT_NO_DEBUG) && defined(QT_OPENGL_ES_2) - if (d->horizontalWrap == Repeat || d->verticalWrap == Repeat) { - bool npotSupported = QOpenGLFunctions(QOpenGLContext::currentContext()).hasOpenGLFeature(QOpenGLFunctions::NPOTTextures); - QSize size = textureSize(); - bool isNpot = !isPowerOfTwo(size.width()) || !isPowerOfTwo(size.height()); - if (!npotSupported && isNpot) - qWarning("Scene Graph: This system does not support the REPEAT wrap mode for non-power-of-two textures."); - } -#endif - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, d->horizontalWrap == Repeat ? GL_REPEAT : GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, d->verticalWrap == Repeat ? GL_REPEAT : GL_CLAMP_TO_EDGE); - d->wrapChanged = false; - } -} - -QSGPlainTexture::QSGPlainTexture() - : QSGTexture() - , m_texture_id(0) - , m_has_alpha(false) - , m_has_mipmaps(false) - , m_dirty_bind_options(false) - , m_owns_texture(true) - , m_mipmaps_generated(false) -{ -} - - -QSGPlainTexture::~QSGPlainTexture() -{ - if (m_texture_id && m_owns_texture) - glDeleteTextures(1, &m_texture_id); -} - -#ifdef QT_OPENGL_ES -static void swizzleBGRAToRGBA(QImage *image) -{ - const int width = image->width(); - const int height = image->height(); - for (int i = 0; i < height; ++i) { - uint *p = (uint *) image->scanLine(i); - for (int x = 0; x < width; ++x) - p[x] = ((p[x] << 16) & 0xff0000) | ((p[x] >> 16) & 0xff) | (p[x] & 0xff00ff00); - } -} -#endif - -void QSGPlainTexture::setImage(const QImage &image) -{ - m_image = image.convertToFormat(QImage::Format_ARGB32_Premultiplied); -#ifdef QT_OPENGL_ES - swizzleBGRAToRGBA(&m_image); -#endif - - m_texture_size = image.size(); - m_has_alpha = image.hasAlphaChannel(); - m_dirty_texture = true; - m_dirty_bind_options = true; - } - -int QSGPlainTexture::textureId() const -{ - if (m_dirty_texture) { - if (m_image.isNull()) { - // The actual texture and id will be updated/deleted in a later bind() - // or ~QSGPlainTexture so just keep it minimal here. - return 0; - } else { - // Generate a texture id for use later and return it. - glGenTextures(1, &const_cast<QSGPlainTexture *>(this)->m_texture_id); - return m_texture_id; - } - } - return m_texture_id; -} - -void QSGPlainTexture::setTextureId(int id) -{ - if (m_texture_id && m_owns_texture) - glDeleteTextures(1, &m_texture_id); - - m_texture_id = id; - m_dirty_texture = false; - m_dirty_bind_options = true; - m_image = QImage(); - m_mipmaps_generated = false; -} - -void QSGPlainTexture::setHasMipmaps(bool mm) -{ - m_has_mipmaps = mm; - m_mipmaps_generated = false; -} - - -void QSGPlainTexture::bind() -{ - if (!m_dirty_texture) { - glBindTexture(GL_TEXTURE_2D, m_texture_id); - if (m_has_mipmaps && !m_mipmaps_generated) { - QOpenGLContext *ctx = QOpenGLContext::currentContext(); - ctx->functions()->glGenerateMipmap(GL_TEXTURE_2D); - m_mipmaps_generated = true; - } - updateBindOptions(m_dirty_bind_options); - m_dirty_bind_options = false; - return; - } - - m_dirty_texture = false; - - - if (m_image.isNull()) { - if (m_texture_id && m_owns_texture) - glDeleteTextures(1, &m_texture_id); - m_texture_id = 0; - m_texture_size = QSize(); - m_has_mipmaps = false; - m_has_alpha = false; - return; - } - - if (m_texture_id == 0) - glGenTextures(1, &m_texture_id); - glBindTexture(GL_TEXTURE_2D, m_texture_id); - - // ### TODO: check for out-of-memory situations... - int w = m_image.width(); - int h = m_image.height(); - -#ifdef QT_OPENGL_ES - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, m_image.constBits()); -#else - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_BGRA, GL_UNSIGNED_BYTE, m_image.constBits()); -#endif - - if (m_has_mipmaps) { - QOpenGLContext *ctx = QOpenGLContext::currentContext(); - ctx->functions()->glGenerateMipmap(GL_TEXTURE_2D); - m_mipmaps_generated = true; - } - - m_texture_size = QSize(w, h); - m_texture_rect = QRectF(0, 0, 1, 1); - - updateBindOptions(m_dirty_bind_options); - m_dirty_bind_options = false; -} - - -/*! - \class QSGDynamicTexture - \brief The QSGDynamicTexture class serves as a baseclass for dynamically changing textures, - such as content that is rendered to FBO's. - - To update the content of the texture, call updateTexture() explicitly. Simply calling bind() - will not update the texture. - */ - - -/*! - \fn bool QSGDynamicTexture::updateTexture() - - Call this function to explicitely update the dynamic texture. Calling bind() will bind - the content that was previously updated. - - The function returns true if the texture was changed as a resul of the update; otherwise - returns false. - */ - - - -QT_END_NAMESPACE |