8ccbeeebc3
Change-Id: I33121076bac3ceca19c81ff9fb47e4b024a14230 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/549838 Reviewed-by: Brian Osman <brianosman@google.com> Reviewed-by: Ben Wagner <bungeman@google.com> Commit-Queue: Herb Derby <herb@google.com>
121 lines
4.0 KiB
C++
121 lines
4.0 KiB
C++
/*
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* Copyright 2022 Google LLC
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "src/core/SkGlyph.h"
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#include "src/gpu/ganesh/GrResourceProvider.h"
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#include "src/core/SkGlyphBuffer.h"
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#include "src/core/SkReadBuffer.h"
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#include "src/core/SkStrikeCache.h"
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#include "src/core/SkStrikeSpec.h"
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#include "src/core/SkWriteBuffer.h"
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#include "src/text/gpu/GlyphVector.h"
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#include "src/text/gpu/SubRunAllocator.h"
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#include "tests/Test.h"
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using GlyphVector = sktext::gpu::GlyphVector;
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using SubRunAllocator = sktext::gpu::SubRunAllocator;
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namespace sktext::gpu {
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class TestingPeer {
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public:
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static const SkDescriptor& GetDescriptor(const GlyphVector& v) {
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return v.fSkStrike->getDescriptor();
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}
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static SkSpan<GlyphVector::Variant> GetGlyphs(const GlyphVector& v) {
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return v.fGlyphs;
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}
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};
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DEF_TEST(GlyphVector_Serialization, r) {
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SkFont font;
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auto [strikeSpec, _] = SkStrikeSpec::MakeCanonicalized(font);
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SubRunAllocator alloc;
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SkBulkGlyphMetricsAndImages glyphFinder{strikeSpec};
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const int N = 10;
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SkGlyphVariant* glyphs = alloc.makePODArray<SkGlyphVariant>(N);
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for (int i = 0; i < N; i++) {
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glyphs[i] = glyphFinder.glyph(SkPackedGlyphID(SkTo<SkGlyphID>(i + 1)));
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}
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GlyphVector src = GlyphVector::Make(
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strikeSpec.findOrCreateStrike(), SkSpan(glyphs, N), &alloc);
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SkBinaryWriteBuffer wBuffer;
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src.flatten(wBuffer);
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auto data = wBuffer.snapshotAsData();
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SkReadBuffer rBuffer{data->data(), data->size()};
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auto dst = GlyphVector::MakeFromBuffer(rBuffer, nullptr, &alloc);
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REPORTER_ASSERT(r, dst.has_value());
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REPORTER_ASSERT(r, TestingPeer::GetDescriptor(src) == TestingPeer::GetDescriptor(*dst));
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auto srcGlyphs = TestingPeer::GetGlyphs(src);
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auto dstGlyphs = TestingPeer::GetGlyphs(*dst);
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for (auto [srcGlyphID, dstGlyphID] : SkMakeZip(srcGlyphs, dstGlyphs)) {
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REPORTER_ASSERT(r, srcGlyphID.packedGlyphID == dstGlyphID.packedGlyphID);
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}
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}
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DEF_TEST(GlyphVector_BadLengths, r) {
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{
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SkFont font;
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auto [strikeSpec, _] = SkStrikeSpec::MakeCanonicalized(font);
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// Make broken stream by hand - zero length
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SkBinaryWriteBuffer wBuffer;
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strikeSpec.descriptor().flatten(wBuffer);
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wBuffer.write32(0); // length
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auto data = wBuffer.snapshotAsData();
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SkReadBuffer rBuffer{data->data(), data->size()};
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SubRunAllocator alloc;
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auto dst = GlyphVector::MakeFromBuffer(rBuffer, nullptr, &alloc);
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REPORTER_ASSERT(r, !dst.has_value());
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}
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{
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SkFont font;
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auto [strikeSpec, _] = SkStrikeSpec::MakeCanonicalized(font);
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// Make broken stream by hand - stream is too short
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SkBinaryWriteBuffer wBuffer;
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strikeSpec.descriptor().flatten(wBuffer);
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wBuffer.write32(5); // length
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wBuffer.writeUInt(12); // random data
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wBuffer.writeUInt(12); // random data
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wBuffer.writeUInt(12); // random data
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auto data = wBuffer.snapshotAsData();
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SkReadBuffer rBuffer{data->data(), data->size()};
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SubRunAllocator alloc;
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auto dst = GlyphVector::MakeFromBuffer(rBuffer, nullptr, &alloc);
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REPORTER_ASSERT(r, !dst.has_value());
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}
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{
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SkFont font;
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auto [strikeSpec, _] = SkStrikeSpec::MakeCanonicalized(font);
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// Make broken stream by hand - length out of range of safe calculations
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SkBinaryWriteBuffer wBuffer;
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strikeSpec.descriptor().flatten(wBuffer);
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wBuffer.write32(INT_MAX - 10); // length
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wBuffer.writeUInt(12); // random data
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wBuffer.writeUInt(12); // random data
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wBuffer.writeUInt(12); // random data
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auto data = wBuffer.snapshotAsData();
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SkReadBuffer rBuffer{data->data(), data->size()};
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SubRunAllocator alloc;
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auto dst = GlyphVector::MakeFromBuffer(rBuffer, nullptr, &alloc);
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REPORTER_ASSERT(r, !dst.has_value());
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}
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}
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} // namespace sktext::gpu
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