Slight Misalignmnet in Rendering

[Danielku15]

When rendering multiple alphaTab symbol glyphs as one string, there happens to be some slight sub-pixel misalignment compared to chrome. It happens both on FreeType and OS mode, but looks different every time.

Likely a problem on the harfbuzz shaping.

alphaSkia/wrapper/src/AlphaSkiaCanvas.cpp

Lines 330 to 340 in 111c717

	width = 0.0f;
	for (uint32_t i = 0; i < infosLength; i++)
	{
	glyphSpan[i] = (SkGlyphID)infos[i].codepoint;
	auto xOffset = width + HarfBuzzToSkiaFontSize * positions[i].x_offset;
	auto yOffset = HarfBuzzToSkiaFontSize * -positions[i].y_offset;
	positionSpan[i] = {xOffset, yOffset};
	width += HarfBuzzToSkiaFontSize * positions[i].x_advance;
	}

OS Mode (windows):

FreeType:

Chrome (SVG):

Chrome (HTML5):