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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "../utils/RingBuffer.h"
#include <utils/String8.h>
namespace android {
namespace uirenderer {
class CacheTexture;
struct CachedGlyphInfo;
// Tracks glyph uploads and recent rendered/skipped glyphs, so it can give an idea
// what a missing character is: skipped glyph, wrong coordinates in cache texture etc.
class FontCacheHistoryTracker {
public:
void glyphRendered(CachedGlyphInfo*, int penX, int penY);
void glyphUploaded(CacheTexture*, uint32_t x, uint32_t y, uint16_t glyphW, uint16_t glyphH);
void glyphsCleared(CacheTexture*);
void frameCompleted();
void dump(String8& log) const;
private:
struct CachedGlyph {
void* texture;
uint16_t generation;
uint16_t startX;
uint16_t startY;
uint16_t bitmapW;
uint16_t bitmapH;
};
struct RenderEntry {
CachedGlyph glyph;
int penX;
int penY;
};
static void dumpCachedGlyph(String8& log, const CachedGlyph& glyph);
static void dumpRenderEntry(String8& log, const RenderEntry& entry);
static void dumpUploadEntry(String8& log, const CachedGlyph& glyph);
RingBuffer<RenderEntry, 300> mRenderHistory;
RingBuffer<CachedGlyph, 120> mUploadHistory;
uint16_t generation = 0;
};
}; // namespace uirenderer
}; // namespace android
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