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| |
| #ifndef QSGRHIDISTANCEFIELDGLYPHCACHE_H |
| #define QSGRHIDISTANCEFIELDGLYPHCACHE_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 "qsgadaptationlayer_p.h" |
| #include <private/qsgareaallocator_p.h> |
| #include <QtGui/private/qrhi_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class Q_QUICK_PRIVATE_EXPORT QSGRhiDistanceFieldGlyphCache : public QSGDistanceFieldGlyphCache |
| { |
| public: |
| QSGRhiDistanceFieldGlyphCache(QRhi *rhi, const QRawFont &font); |
| virtual ~QSGRhiDistanceFieldGlyphCache(); |
| |
| 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; |
| |
| bool useTextureResizeWorkaround() const; |
| bool createFullSizeTextures() const; |
| int maxTextureSize() const; |
| |
| void setMaxTextureCount(int max) { m_maxTextureCount = max; } |
| int maxTextureCount() const { return m_maxTextureCount; } |
| |
| void commitResourceUpdates(QRhiResourceUpdateBatch *mergeInto); |
| |
| bool eightBitFormatIsAlphaSwizzled() const override; |
| |
| private: |
| bool loadPregeneratedCache(const QRawFont &font); |
| |
| struct TextureInfo { |
| QRhiTexture *texture; |
| QSize size; |
| QRect allocatedArea; |
| QDistanceField image; |
| int padding = -1; |
| QVarLengthArray<QRhiTextureUploadEntry, 16> uploads; |
| |
| TextureInfo(const QRect &preallocRect = QRect()) : texture(nullptr), allocatedArea(preallocRect) { } |
| }; |
| |
| void createTexture(TextureInfo *texInfo, int width, int height, const void *pixels); |
| void createTexture(TextureInfo *texInfo, int width, int height); |
| void resizeTexture(TextureInfo *texInfo, int width, int height); |
| |
| TextureInfo *textureInfo(int index) |
| { |
| for (int i = m_textures.count(); i <= index; ++i) { |
| if (createFullSizeTextures()) |
| m_textures.append(QRect(0, 0, maxTextureSize(), maxTextureSize())); |
| else |
| m_textures.append(TextureInfo()); |
| } |
| |
| return &m_textures[index]; |
| } |
| |
| QRhi *m_rhi; |
| mutable int m_maxTextureSize = 0; |
| int m_maxTextureCount = 3; |
| QSGAreaAllocator *m_areaAllocator = nullptr; |
| QRhiResourceUpdateBatch *m_resourceUpdates = nullptr; |
| QList<TextureInfo> m_textures; |
| QHash<glyph_t, TextureInfo *> m_glyphsTexture; |
| QSet<glyph_t> m_unusedGlyphs; |
| QSet<QRhiTexture *> m_pendingDispose; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QSGRHIDISTANCEFIELDGLYPHCACHE_H |