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/****************************************************************************
**
** Copyright (C) 2008-2012 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#pragma once
#ifndef QT3DS_RENDER_TEXTURE_ATLAS_H
#define QT3DS_RENDER_TEXTURE_ATLAS_H
#include "Qt3DSRender.h"
#include "foundation/Qt3DSRefCounted.h"
#include "render/Qt3DSRenderBaseTypes.h"
#include "EASTL/algorithm.h"
namespace qt3ds {
namespace render {
class ITextRenderer;
struct STextureAtlasRect
{
STextureAtlasRect()
: m_X(0)
, m_Y(0)
, m_Width(0)
, m_Height(0)
{
}
STextureAtlasRect(QT3DSI32 x, QT3DSI32 y, QT3DSI32 w, QT3DSI32 h)
: m_X(x)
, m_Y(y)
, m_Width(w)
, m_Height(h)
{
}
QT3DSI32 m_X;
QT3DSI32 m_Y;
QT3DSI32 m_Width;
QT3DSI32 m_Height;
// normalized coordinates
QT3DSF32 m_NormX;
QT3DSF32 m_NormY;
QT3DSF32 m_NormWidth;
QT3DSF32 m_NormHeight;
};
typedef eastl::pair<STextureAtlasRect, NVDataRef<QT3DSU8>> TTextureAtlasEntryAndBuffer;
/**
* Abstract class of a texture atlas representation
*/
class ITextureAtlas : public NVRefCounted
{
protected:
virtual ~ITextureAtlas() {}
public:
virtual QT3DSI32 GetWidth() const = 0;
virtual QT3DSI32 GetHeight() const = 0;
virtual QT3DSI32 GetAtlasEntryCount() const = 0;
virtual TTextureAtlasEntryAndBuffer GetAtlasEntryByIndex(QT3DSU32 index) = 0;
virtual STextureAtlasRect AddAtlasEntry(QT3DSI32 width, QT3DSI32 height, QT3DSI32 pitch,
QT3DSI32 dataWidth,
NVConstDataRef<QT3DSU8> bufferData) = 0;
virtual void RelaseEntries() = 0;
static ITextureAtlas &CreateTextureAtlas(NVFoundationBase &inFnd,
NVRenderContext &inRenderContext, QT3DSI32 width,
QT3DSI32 height);
};
}
}
#endif
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