https://bugs.freedesktop.org/show_bug.cgi?id=47432

--- Comment #3 from Flex Liu <[email protected]> ---
Yes, I reproduce the issue in master still.

I find the problem should be located in file:
/core/canvas/source/cairo/cairo_textlayout.cxx:608

            //faux bold
            if (rSysFontData.bFakeBold) {
                double bold_dx = 0.5 * sqrt( 0.7 * aFont.GetHeight() );
                int total_steps = 2 * ((int) (bold_dx + 0.5));

                // loop to draw the text for every half pixel of displacement
                for (int nSteps = 0; nSteps < total_steps; nSteps++) {
                    for(int nGlyphIdx = 0; nGlyphIdx < (int)
cairo_glyphs.size(); nGlyphIdx++) {
                        cairo_glyphs[nGlyphIdx].x += bold_dx * nSteps /
total_steps;
                    }   
                    cairo_show_glyphs(pSCairo.get(), &cairo_glyphs[0],
cairo_glyphs.size());
                }   
                OSL_TRACE(":cairocanvas::TextLayout::draw(S,O,p,v,r): FAKEBOLD
- dx:%d", (int) bold_dx);
            }   

yes, that's cause the bold in Asian font so ugly.

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