1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 #include "../utils/RingBuffer.h" 19 20 #include <utils/String8.h> 21 22 namespace android { 23 namespace uirenderer { 24 25 class CacheTexture; 26 struct CachedGlyphInfo; 27 28 // Tracks glyph uploads and recent rendered/skipped glyphs, so it can give an idea 29 // what a missing character is: skipped glyph, wrong coordinates in cache texture etc. 30 class FontCacheHistoryTracker { 31 public: 32 void glyphRendered(CachedGlyphInfo*, int penX, int penY); 33 void glyphUploaded(CacheTexture*, uint32_t x, uint32_t y, uint16_t glyphW, uint16_t glyphH); 34 void glyphsCleared(CacheTexture*); 35 void frameCompleted(); 36 37 void dump(String8& log) const; 38 39 private: 40 struct CachedGlyph { 41 void* texture; 42 uint16_t generation; 43 uint16_t startX; 44 uint16_t startY; 45 uint16_t bitmapW; 46 uint16_t bitmapH; 47 }; 48 49 struct RenderEntry { 50 CachedGlyph glyph; 51 int penX; 52 int penY; 53 }; 54 55 static void dumpCachedGlyph(String8& log, const CachedGlyph& glyph); 56 static void dumpRenderEntry(String8& log, const RenderEntry& entry); 57 static void dumpUploadEntry(String8& log, const CachedGlyph& glyph); 58 59 RingBuffer<RenderEntry, 300> mRenderHistory; 60 RingBuffer<CachedGlyph, 120> mUploadHistory; 61 uint16_t generation = 0; 62 }; 63 64 }; // namespace uirenderer 65 }; // namespace android
