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Diffstat (limited to 'src/runtimerender/Qt3DSDistanceFieldGlyphCache_p.h')
-rw-r--r-- | src/runtimerender/Qt3DSDistanceFieldGlyphCache_p.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/runtimerender/Qt3DSDistanceFieldGlyphCache_p.h b/src/runtimerender/Qt3DSDistanceFieldGlyphCache_p.h new file mode 100644 index 0000000..679d3ad --- /dev/null +++ b/src/runtimerender/Qt3DSDistanceFieldGlyphCache_p.h @@ -0,0 +1,101 @@ +/**************************************************************************** +** +** Copyright (C) 2019 The Qt Company Ltd. +** Contact: http://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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef Q3DSDISTANCEFIELDGLYPHCACHE_P_H +#define Q3DSDISTANCEFIELDGLYPHCACHE_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QtQuick/private/qsgadaptationlayer_p.h> +#include "render/Qt3DSRenderTexture2D.h" +#include "Qt3DSRenderContextCore.h" + +#if QT_VERSION >= QT_VERSION_CHECK(5,12,2) + +QT_BEGIN_NAMESPACE + +class QSGAreaAllocator; +class Q3DSDistanceFieldGlyphCache : public QSGDistanceFieldGlyphCache +{ +public: + struct TextureInfo { + qt3ds::render::NVRenderTexture2D *texture; + int padding = -1; + + QRect allocatedArea; + QImage copy; + }; + + Q3DSDistanceFieldGlyphCache(const QRawFont &font, + qt3ds::render::IQt3DSRenderContext &context); + ~Q3DSDistanceFieldGlyphCache() override; + + void requestGlyphs(const QSet<glyph_t> &glyphs) override; + void storeGlyphs(const QList<QDistanceField> &glyphs) override; + void referenceGlyphs(const QSet<glyph_t> &glyphs) override; + void releaseGlyphs(const QSet<glyph_t> &glyphs) override; + + void processPendingGlyphs() override; + + TextureInfo *textureInfoById(uint textureId) const; + + qreal fontSize() const; + +private: + bool loadPregeneratedCache(const QRawFont &font); + TextureInfo *textureInfo(int index) const; + + int maxTextureSize() const; + void resizeTexture(TextureInfo *info, int width, int height); + void setTextureData(qt3ds::render::NVRenderTexture2D *texture, QImage &image); + + QSGAreaAllocator *m_areaAllocator = nullptr; + int m_maxTextureSize = 0; + int m_maxTextureCount = 3; + + mutable QVector<TextureInfo> m_textures; + QHash<glyph_t, TextureInfo *> m_glyphsTexture; + QSet<glyph_t> m_unusedGlyphs; + qt3ds::render::IQt3DSRenderContext &m_context; +}; + +QT_END_NAMESPACE + +#endif // Q3DSDISTANCEFIELDGLYPHCACHE_P_H + +#endif // QT_VERSION >= QT_VERSION_CHECK(5,12,2) |