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Bug 1321901 - Use IDWriteFontFace::GetRecommendedRenderingMode for font rendering mode in Skia. r=lsalzman

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This commit is contained in:
Mason Chang 2016-12-07 17:27:04 -10:00
parent 75af7759bf
commit 0a092e1441
2 changed files with 18 additions and 3 deletions
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20
gfx/skia/skia/src/ports/SkScalerContext_win_dw.cpp
View File

@ -219,7 +219,13 @@ SkScalerContext_DW::SkScalerContext_DW(DWriteFontTypeface* typeface,
fIsColorFont = fFactory2.get() && fontFace2.get() && fontFace2->IsColorFont();
#endif
// In general, all glyphs should use CLEARTYPE_NATURAL_SYMMETRIC
IDWriteFactory* factory = sk_get_dwrite_factory();
if (factory != nullptr) {
HRVM(factory->CreateRenderingParams(&fDefaultRenderingParams),
"Could not create default rendering params");
}
// In general, all glyphs should DWriteFontFace::GetRecommendedRenderingMode
// except when bi-level rendering is requested or there are embedded
// bi-level bitmaps (and the embedded bitmap flag is set and no rotation).
//
@ -315,13 +321,21 @@ SkScalerContext_DW::SkScalerContext_DW(DWriteFontTypeface* typeface,
fTextSizeMeasure = realTextSize;
fMeasuringMode = DWRITE_MEASURING_MODE_NATURAL;
// The normal case is to use natural symmetric rendering and linear metrics.
// The normal case is to use the recommended rendering mode
} else {
fTextSizeRender = realTextSize;
fRenderingMode = DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC;
fTextureType = DWRITE_TEXTURE_CLEARTYPE_3x1;
fTextSizeMeasure = realTextSize;
fMeasuringMode = DWRITE_MEASURING_MODE_NATURAL;
if (!SUCCEEDED(fTypeface->fDWriteFontFace->GetRecommendedRenderingMode(
fTextSizeRender,
1.0f,
fMeasuringMode,
fDefaultRenderingParams.get(),
&fRenderingMode))) {
fRenderingMode = DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC;
}
}
if (this->isSubpixel()) {

1
gfx/skia/skia/src/ports/SkScalerContext_win_dw.h
View File

@ -75,6 +75,7 @@ private:
DWRITE_RENDERING_MODE fRenderingMode;
DWRITE_TEXTURE_TYPE fTextureType;
DWRITE_MEASURING_MODE fMeasuringMode;
SkTScopedComPtr<IDWriteRenderingParams> fDefaultRenderingParams;
#if SK_HAS_DWRITE_2_H
SkTScopedComPtr<IDWriteFactory2> fFactory2;
bool fIsColorFont;