[base] Some comments.
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@ -391,8 +391,10 @@
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case FT_RENDER_MODE_MONO:
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pixel_mode = FT_PIXEL_MODE_MONO;
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#if 1
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/* undocumented but confirmed: bbox values get rounded */
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/* for narrow glyphs bbox is extended to one pixel first */
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/* x */
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/* undocumented but confirmed: bbox values get rounded; */
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/* for narrow glyphs bbox is extended to one pixel first */
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if ( pbox.xMax - pbox.xMin <= 1 )
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{
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if ( pbox.xMax - pbox.xMin == 0 )
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@ -404,9 +406,14 @@
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cbox.xMin = cbox.xMax = ( cbox.xMin + cbox.xMax ) / 2;
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}
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/* we do asymmetric rounding so that the center */
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/* of a pixel gets always included */
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pbox.xMin += ( cbox.xMin + 31 ) >> 6;
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pbox.xMax += ( cbox.xMax + 32 ) >> 6;
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/* y */
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if ( pbox.yMax - pbox.yMin <= 1 )
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{
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if ( pbox.yMax - pbox.yMin == 0 )
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