Index: src/gpu/GrBatchFontCache.h |
diff --git a/src/gpu/GrBatchFontCache.h b/src/gpu/GrBatchFontCache.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..cb27027888cd4a5891f5afb71d275bc892569874 |
--- /dev/null |
+++ b/src/gpu/GrBatchFontCache.h |
@@ -0,0 +1,151 @@ |
+/* |
+ * Copyright 2015 Google Inc. |
+ * |
+ * Use of this source code is governed by a BSD-style license that can be |
+ * found in the LICENSE file. |
+ */ |
+ |
+#ifndef GrBatchFontCache_DEFINED |
+#define GrBatchFontCache_DEFINED |
+ |
+#include "GrBatchAtlas.h" |
+#include "GrDrawTarget.h" |
+#include "GrFontScaler.h" |
+#include "GrGlyph.h" |
+#include "SkTDynamicHash.h" |
+#include "SkVarAlloc.h" |
+ |
+class GrBatchFontCache; |
+class GrBatchTarget; |
+class GrGpu; |
+ |
+/** |
+ * The textstrike maps a hostfontscaler instance to a dictionary of |
+ * glyphid->strike |
+ */ |
+class GrBatchTextStrike { |
+public: |
+ SK_DECLARE_INTERNAL_LLIST_INTERFACE(GrBatchTextStrike); |
+ GrBatchTextStrike(GrBatchFontCache*, const GrFontDescKey* fontScalerKey); |
+ ~GrBatchTextStrike(); |
+ |
+ const GrFontDescKey* getFontScalerKey() const { return fFontScalerKey; } |
+ GrBatchFontCache* getBatchFontCache() const { return fBatchFontCache; } |
+ |
+ inline GrGlyph* getGlyph(GrGlyph::PackedID packed, GrFontScaler* scaler) { |
+ GrGlyph* glyph = fCache.find(packed); |
+ if (NULL == glyph) { |
+ glyph = this->generateGlyph(packed, scaler); |
+ } |
+ return glyph; |
+ } |
+ |
+ // returns true if glyph (or glyph+padding for distance field) |
+ // is too large to ever fit in texture atlas subregions (GrPlots) |
+ bool glyphTooLargeForAtlas(GrGlyph*); |
+ // returns true if glyph successfully added to texture atlas, false otherwise |
+ bool addGlyphToAtlas(GrBatchTarget*, GrGlyph*, GrFontScaler*); |
+ |
+ // testing |
+ int countGlyphs() const { return fCache.count(); } |
+ |
+ // remove any references to this plot |
+ void removeID(GrBatchAtlas::AtlasID); |
+ |
+ static const GrFontDescKey& GetKey(const GrBatchTextStrike& ts) { |
+ return *(ts.fFontScalerKey); |
+ } |
+ static uint32_t Hash(const GrFontDescKey& key) { |
+ return key.getHash(); |
+ } |
+ |
+private: |
+ SkTDynamicHash<GrGlyph, GrGlyph::PackedID> fCache; |
+ const GrFontDescKey* fFontScalerKey; |
+ SkVarAlloc fPool; |
+ |
+ GrBatchFontCache* fBatchFontCache; |
+ int fAtlasedGlyphs; |
+ |
+ GrGlyph* generateGlyph(GrGlyph::PackedID packed, GrFontScaler* scaler); |
+ |
+ friend class GrBatchFontCache; |
+}; |
+ |
robertphillips
2015/03/23 19:03:12
Can this guy go inside GrBatchFontCache ?
joshualitt
2015/03/23 19:56:08
Acknowledged.
|
+typedef SkTInternalLList<GrBatchTextStrike> GrBatchStrikeList; |
+ |
+class GrBatchFontCache { |
+public: |
+ GrBatchFontCache(GrContext*); |
+ ~GrBatchFontCache(); |
+ |
+ inline GrBatchTextStrike* getStrike(GrFontScaler* scaler) { |
+ SkDEBUGCODE(this->validate();) |
+ |
+ GrBatchTextStrike* strike = fCache.find(*(scaler->getKey())); |
+ if (NULL == strike) { |
+ strike = this->generateStrike(scaler); |
+ } else { |
+ this->makeMRU(strike); |
+ } |
+ SkDEBUGCODE(this->validate();) |
+ return strike; |
+ } |
+ |
+ bool hasGlyph(GrGlyph* glyph); |
+ void refGlyph(GrGlyph*, GrBatchAtlas::BatchToken); |
+ |
+ // add to texture atlas that matches this format |
+ bool addToAtlas(GrBatchTextStrike*, GrBatchAtlas::AtlasID*, GrBatchTarget*, |
+ GrMaskFormat, int width, int height, const void* image, |
+ SkIPoint16* loc); |
+ |
+ uint32_t atlasGeneration(GrMaskFormat) const; |
+ |
+ void freeAll(); |
+ |
+ inline void makeMRU(GrBatchTextStrike* strike) { |
+ if (fStrikeList.head() == strike) { |
+ return; |
+ } |
+ |
+ fStrikeList.remove(strike); |
+ fStrikeList.addToHead(strike); |
+ } |
+ |
+ GrTexture* getTexture(GrMaskFormat); |
+ GrPixelConfig getPixelConfig(GrMaskFormat) const; |
+ |
+ SkDEBUGCODE(void validate() const;) |
+ |
+ void dump() const; |
+ |
+private: |
+ enum AtlasType { |
+ kA8_AtlasType, //!< 1-byte per pixel |
+ k565_AtlasType, //!< 2-bytes per pixel |
+ k8888_AtlasType, //!< 4-bytes per pixel |
+ |
+ kLast_AtlasType = k8888_AtlasType |
+ }; |
+ |
+ static const int kAtlasCount = kLast_AtlasType + 1; |
+ |
+ static int MaskFormatToAtlasIndex(GrMaskFormat); |
+ static GrMaskFormat AtlasIndexToMaskFormat(int atlasIndex); |
+ |
+ GrBatchTextStrike* generateStrike(GrFontScaler*); |
+ |
+ void purgeStrike(GrBatchTextStrike* strike); |
+ inline GrBatchAtlas* getAtlas(GrMaskFormat) const; |
+ |
+ static void HandleEviction(GrBatchAtlas::AtlasID, void*); |
+ |
+ SkTDynamicHash<GrBatchTextStrike, GrFontDescKey> fCache; |
+ GrBatchStrikeList fStrikeList; |
+ |
+ GrBatchAtlas* fAtlases[kAtlasCount]; |
+ GrBatchTextStrike* fPreserveStrike; |
+}; |
+ |
+#endif |