1 files changed, 130 insertions, 0 deletions
diff --git a/src/scenegraph/coreapi/qsgtexturemanager.cpp b/src/scenegraph/coreapi/qsgtexturemanager.cpp
new file mode 100644
index 0000000..d8ce090
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+++ b/src/scenegraph/coreapi/qsgtexturemanager.cpp
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+/****************************************************************************
+**
+** 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 Qt scene graph research project.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qsgtexturemanager.h"
+
+#include <QImage>
+
+#include <qgl.h>
+
+QSGTexture::QSGTexture()
+    : m_status(Null)
+    , m_texture_id(0)
+    , m_ref_count(0)
+    , m_has_alpha(false)
+    , m_owns_texture(true)
+    , m_has_mipmaps(false)
+{
+}
+
+
+
+QSGTexture::~QSGTexture()
+{
+    if (m_owns_texture)
+        glDeleteTextures(1, (GLuint *) &m_texture_id);
+}
+
+
+
+void QSGTexture::setStatus(Status s)
+{
+    m_status = s;
+    Q_ASSERT(s != Ready || (m_texture_id > 0 && !m_texture_size.isEmpty()));
+    emit statusChanged(s);
+}
+
+
+
+QSGTextureManager::QSGTextureManager()
+{
+}
+
+
+
+QImage QSGTextureManager::swizzleBGGRAToRGBA(const QImage &image)
+{
+    QImage img = image.copy();
+    const int width = img.width();
+    const int height = img.height();
+    for (int i = 0; i < height; ++i) {
+        uint *p = (uint *) img.scanLine(i);
+        for (int x = 0; x < width; ++x)
+            p[x] = ((p[x] << 16) & 0xff0000) | ((p[x] >> 16) & 0xff) | (p[x] & 0xff00ff00);
+    }
+    return img;
+}
+
+
+
+QSGTextureRef QSGTextureManager::upload(const QImage &image)
+{
+    GLuint id;
+    glGenTextures(1, &id);
+    glBindTexture(GL_TEXTURE_2D, id);
+
+#ifdef QT_OPENGL_ES
+    QImage i = swizzleBGRAToRGBA(image);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, i.width(), i.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, i.constBits());
+#else
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image.width(), image.height(), 0, GL_BGRA, GL_UNSIGNED_BYTE, image.constBits());
+#endif
+
+    QSGTexture *texture = new QSGTexture;
+    texture->setTextureId(id);
+    texture->setTextureSize(image.size());
+    texture->setAlphaChannel(image.hasAlphaChannel());
+    texture->setStatus(QSGTexture::Ready);
+
+    QSGTextureRef ref(texture);
+    return ref;
+}
+
+
+
+QSGTextureRef QSGTextureManager::requestUpload(const QImage &image,
+                                               const QObject *listener,
+                                               const char *slot)
+{
+    QSGTextureRef texture = upload(image);
+    return texture;
+}
+