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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_TEXT_TEXTURE_CACHE_H
#define QT3DS_RENDER_TEXT_TEXTURE_CACHE_H
#include "Qt3DSRender.h"
#include "foundation/Qt3DSRefCounted.h"
#include "Qt3DSRenderText.h"
#include "EASTL/algorithm.h"
namespace qt3ds {
namespace render {
class ITextRenderer;
typedef eastl::pair<NVScopedRefCounted<NVRenderPathFontSpecification>,
NVScopedRefCounted<NVRenderPathFontItem>>
TPathFontSpecAndPathObject;
typedef eastl::pair<STextTextureDetails, NVScopedRefCounted<NVRenderTexture2D>>
TTextTextureDetailsAndTexture;
typedef eastl::pair<TPathFontSpecAndPathObject, TTextTextureDetailsAndTexture>
TTPathObjectAndTexture;
class ITextTextureCache : public NVRefCounted
{
protected:
virtual ~ITextTextureCache() {}
public:
virtual TTPathObjectAndTexture RenderText(const STextRenderInfo &inText,
QT3DSF32 inScaleFactor) = 0;
// We may have one more texture in cache than this byte count, but this will be the limiting
// factor.
virtual QT3DSU32 GetCacheHighWaterBytes() const = 0;
virtual void SetCacheHighWaterBytes(QT3DSU32 inNumBytes) = 0;
virtual void BeginFrame() = 0;
// We need to know the frame rhythm because we can't release anything that was touched this
// frame.
virtual void EndFrame() = 0;
static ITextTextureCache &CreateTextureCache(NVFoundationBase &inFnd,
ITextRenderer &inTextRenderer,
NVRenderContext &inRenderContext);
};
}
}
#endif
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