blob: 19d5a3b4e22fcf1c7e6cd21b91fb46ac2e7c8cd2 [file] [log] [blame]
/*
* Copyright 2019 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "include/core/SkColor.h"
#include "include/core/SkStream.h"
#include "include/core/SkSurface.h"
#include "include/private/chromium/SkChromeRemoteGlyphCache.h"
#include "src/core/SkScalerContext.h"
#include "src/core/SkTextBlobTrace.h"
#include <iostream>
#include <string>
#include <unordered_map>
#include <vector>
int main(int argc, char** argv) {
std::unordered_map<uint64_t, uint32_t> counts;
size_t total = 0;
for (int i = 1; i < argc; i++) {
const char* filename = argv[i];
SkFILEStream in{filename};
std::vector<SkTextBlobTrace::Record> trace = SkTextBlobTrace::CreateBlobTrace(&in);
for (const SkTextBlobTrace::Record& record : trace) {
total++;
const SkPaint paint = record.paint;
bool fastByPass = paint.getStyle() == SkPaint::kFill_Style
&& paint.getPathEffect() == nullptr
&& paint.getMaskFilter() == nullptr;
if (fastByPass) {
uint64_t blobID = record.origUniqueID;
SkPoint offset = record.offset;
SkColor c = SkMaskGamma::CanonicalColor(paint.getColor());
uint32_t colorBits =
(SkColorGetR(c) >> 5u) << 6u
| (SkColorGetG(c) >> 5u) << 3u
| SkColorGetB(c) >> 5u;
SkFixed fx = (SkScalarToFixed(offset.x()) >> 13) & 7;
SkFixed fy = (SkScalarToFixed(offset.y()) >> 13) & 7;
uint32_t posBits = (fx << 3 | fy) << 12;
uint64_t blobKey = blobID << 32u | posBits | colorBits;
auto lookup = counts.find(blobKey);
if (lookup == counts.end()) {
bool ok;
std::tie(lookup, ok) = counts.insert({blobKey, 0});
SkASSERT(ok);
}
lookup->second += 1;
std::cout << std::hex << blobKey << "\n";
}
}
std::cerr << "trace: " << filename
<< " unique: " << counts.size()
<< " all: " << total
<< " ratio: " << (float)total/counts.size() << "\n";
SkRect bounds = {0, 0, 0, 0};
for (const SkTextBlobTrace::Record& record : trace) {
bounds.join(record.blob->bounds().makeOffset(record.offset.x(), record.offset.y()));
}
SkIRect iBounds = bounds.roundOut();
if (iBounds.size().isEmpty()) {
continue;
}
static constexpr SkColor kBackground = SK_ColorWHITE;
sk_sp<SkSurface> surf = SkSurface::MakeRasterN32Premul(iBounds.width() + 16,
iBounds.height() + 16);
SkCanvas* canvas = surf->getCanvas();
canvas->translate(8.0f - iBounds.x(), 8.0f - iBounds.y());
canvas->clear(kBackground);
for (const SkTextBlobTrace::Record& record : trace) {
canvas->drawTextBlob(
record.blob.get(), record.offset.x(), record.offset.y(), record.paint);
}
sk_sp<SkImage> img(surf->makeImageSnapshot());
if (sk_sp<SkData> png = img ? img->encodeToData() : nullptr) {
SkString path = SkStringPrintf("text_blob_trace_%04d.png", i);
SkFILEWStream(path.c_str()).write(png->data(), png->size());
}
}
return 0;
}