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Diffstat (limited to 'src/opengl/qgltexturepool.cpp')
| -rw-r--r-- | src/opengl/qgltexturepool.cpp | 244 |
1 files changed, 0 insertions, 244 deletions
diff --git a/src/opengl/qgltexturepool.cpp b/src/opengl/qgltexturepool.cpp deleted file mode 100644 index d809328725..0000000000 --- a/src/opengl/qgltexturepool.cpp +++ /dev/null @@ -1,244 +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 QtOpenVG 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 "qgltexturepool_p.h" -#include "qpixmapdata_gl_p.h" - -QT_BEGIN_NAMESPACE - -Q_OPENGL_EXPORT extern QGLWidget* qt_gl_share_widget(); - -static QGLTexturePool *qt_gl_texture_pool = 0; - -class QGLTexturePoolPrivate -{ -public: - QGLTexturePoolPrivate() : lruFirst(0), lruLast(0) {} - - QGLPixmapData *lruFirst; - QGLPixmapData *lruLast; -}; - -QGLTexturePool::QGLTexturePool() - : d_ptr(new QGLTexturePoolPrivate()) -{ -} - -QGLTexturePool::~QGLTexturePool() -{ -} - -QGLTexturePool *QGLTexturePool::instance() -{ - if (!qt_gl_texture_pool) - qt_gl_texture_pool = new QGLTexturePool(); - return qt_gl_texture_pool; -} - -GLuint QGLTexturePool::createTextureForPixmap(GLenum target, - GLint level, - GLint internalformat, - GLsizei width, - GLsizei height, - GLenum format, - GLenum type, - QGLPixmapData *data) -{ - GLuint texture; - glGenTextures(1, &texture); - glBindTexture(target, texture); - do { - glTexImage2D(target, level, internalformat, width, height, 0, format, type, 0); - GLenum error = glGetError(); - if (error == GL_NO_ERROR) { - if (data) - moveToHeadOfLRU(data); - return texture; - } else if (error != GL_OUT_OF_MEMORY) { - qWarning("QGLTexturePool: cannot create temporary texture because of invalid params"); - return 0; - } - } while (reclaimSpace(internalformat, width, height, format, type, data)); - qWarning("QGLTexturePool: cannot reclaim sufficient space for a %dx%d pixmap", - width, height); - return 0; -} - -bool QGLTexturePool::createPermanentTexture(GLuint texture, - GLenum target, - GLint level, - GLint internalformat, - GLsizei width, - GLsizei height, - GLenum format, - GLenum type, - const GLvoid *data) -{ - glBindTexture(target, texture); - do { - glTexImage2D(target, level, internalformat, width, height, 0, format, type, data); - - GLenum error = glGetError(); - if (error == GL_NO_ERROR) { - return true; - } else if (error != GL_OUT_OF_MEMORY) { - qWarning("QGLTexturePool: cannot create permanent texture because of invalid params"); - return false; - } - } while (reclaimSpace(internalformat, width, height, format, type, 0)); - qWarning("QGLTexturePool: cannot reclaim sufficient space for a %dx%d pixmap", - width, height); - return 0; -} - -void QGLTexturePool::releaseTexture(QGLPixmapData *data, GLuint texture) -{ - // Very simple strategy at the moment: just destroy the texture. - if (data) - removeFromLRU(data); - - QGLWidget *shareWidget = qt_gl_share_widget(); - if (shareWidget) { - QGLShareContextScope ctx(shareWidget->context()); - glDeleteTextures(1, &texture); - } -} - -void QGLTexturePool::useTexture(QGLPixmapData *data) -{ - moveToHeadOfLRU(data); -} - -void QGLTexturePool::detachTexture(QGLPixmapData *data) -{ - removeFromLRU(data); -} - -bool QGLTexturePool::reclaimSpace(GLint internalformat, - GLsizei width, - GLsizei height, - GLenum format, - GLenum type, - QGLPixmapData *data) -{ - Q_UNUSED(internalformat); // For future use in picking the best texture to eject. - Q_UNUSED(width); - Q_UNUSED(height); - Q_UNUSED(format); - Q_UNUSED(type); - - bool succeeded = false; - bool wasInLRU = false; - if (data) { - wasInLRU = data->inLRU; - moveToHeadOfLRU(data); - } - - QGLPixmapData *lrudata = pixmapLRU(); - if (lrudata && lrudata != data) { - lrudata->reclaimTexture(); - succeeded = true; - } - - if (data && !wasInLRU) - removeFromLRU(data); - - return succeeded; -} - -void QGLTexturePool::hibernate() -{ - Q_D(QGLTexturePool); - QGLPixmapData *pd = d->lruLast; - while (pd) { - QGLPixmapData *prevLRU = pd->prevLRU; - pd->inTexturePool = false; - pd->inLRU = false; - pd->nextLRU = 0; - pd->prevLRU = 0; - pd->hibernate(); - pd = prevLRU; - } - d->lruFirst = 0; - d->lruLast = 0; -} - -void QGLTexturePool::moveToHeadOfLRU(QGLPixmapData *data) -{ - Q_D(QGLTexturePool); - if (data->inLRU) { - if (!data->prevLRU) - return; // Already at the head of the list. - removeFromLRU(data); - } - data->inLRU = true; - data->nextLRU = d->lruFirst; - data->prevLRU = 0; - if (d->lruFirst) - d->lruFirst->prevLRU = data; - else - d->lruLast = data; - d->lruFirst = data; -} - -void QGLTexturePool::removeFromLRU(QGLPixmapData *data) -{ - Q_D(QGLTexturePool); - if (!data->inLRU) - return; - if (data->nextLRU) - data->nextLRU->prevLRU = data->prevLRU; - else - d->lruLast = data->prevLRU; - if (data->prevLRU) - data->prevLRU->nextLRU = data->nextLRU; - else - d->lruFirst = data->nextLRU; - data->inLRU = false; -} - -QGLPixmapData *QGLTexturePool::pixmapLRU() -{ - Q_D(QGLTexturePool); - return d->lruLast; -} - -QT_END_NAMESPACE |