Commit ea932921 authored by Committed by Behdad Esfahbod
image compositor: Support subpixel positioning
Support subpixel positioning with a 4x4 subpixel grid. When compositing glyphs in the image compositor, we store the subpixel phases in the high bits of the glyph index. The _cairo_scaled_glyph_index() macro has been updated to discard these bits. By storing the phases in the glyph index, the glyph cache just keeps working. When loading a glyph, the Freetype font backend shifts the outline according to the phases.
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