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Error correction buffer optimization

This commit is contained in:
Chlumsky 2021-05-29 14:45:59 +02:00
parent d238eecc5b
commit 0e81034513
2 changed files with 10 additions and 2 deletions
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1
msdf-atlas-gen/ImmediateAtlasGenerator.h
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@ -34,6 +34,7 @@ private:
AtlasStorage storage;
std::vector<GlyphBox> layout;
std::vector<T> glyphBuffer;
std::vector<byte> errorCorrectionBuffer;
GeneratorAttributes attributes;
int threadCount;

11
msdf-atlas-gen/ImmediateAtlasGenerator.hpp
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@ -22,14 +22,21 @@ void ImmediateAtlasGenerator<T, N, GEN_FN, AtlasStorage>::generate(const GlyphGe
int threadBufferSize = N*maxBoxArea;
if (threadCount*threadBufferSize > (int) glyphBuffer.size())
glyphBuffer.resize(threadCount*threadBufferSize);
if (threadCount*maxBoxArea > (int) errorCorrectionBuffer.size())
errorCorrectionBuffer.resize(threadCount*maxBoxArea);
std::vector<GeneratorAttributes> threadAttributes(threadCount);
for (int i = 0; i < threadCount; ++i) {
threadAttributes[i] = attributes;
threadAttributes[i].config.errorCorrection.buffer = errorCorrectionBuffer.data()+i*maxBoxArea;
}
Workload([this, &glyphs, threadBufferSize](int i, int threadNo) -> bool {
Workload([this, glyphs, &threadAttributes, threadBufferSize](int i, int threadNo) -> bool {
const GlyphGeometry &glyph = glyphs[i];
if (!glyph.isWhitespace()) {
int l, b, w, h;
glyph.getBoxRect(l, b, w, h);
msdfgen::BitmapRef<T, N> glyphBitmap(glyphBuffer.data()+threadNo*threadBufferSize, w, h);
GEN_FN(glyphBitmap, glyph, attributes);
GEN_FN(glyphBitmap, glyph, threadAttributes[threadNo]);
storage.put(l, b, msdfgen::BitmapConstRef<T, N>(glyphBitmap));
}
return true;