| /* |
| * 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/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkFontMgr.h" |
| #include "include/core/SkStream.h" |
| #include "include/core/SkSurface.h" |
| #include "include/encode/SkPngEncoder.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, nullptr); |
| 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 = SkSurfaces::Raster( |
| SkImageInfo::MakeN32Premul(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 (img) { |
| sk_sp<SkData> png = SkPngEncoder::Encode(nullptr, img.get(), {}); |
| if (png) { |
| SkString path = SkStringPrintf("text_blob_trace_%04d.png", i); |
| SkFILEWStream(path.c_str()).write(png->data(), png->size()); |
| } |
| } |
| } |
| return 0; |
| } |