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text/v2: don't consider subpixels in Y direction in StdFace

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This commit is contained in:
Hajime Hoshi 2023-11-13 02:24:06 +09:00
parent a645fbb2b0
commit 38a0449b44
1 changed files with 1 additions and 2 deletions
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3
text/v2/std.go
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@ -126,14 +126,13 @@ func (s *StdFace) appendGlyphs(glyphs []Glyph, text string, originX, originY flo
func (s *StdFace) glyphImage(r rune, origin fixed.Point26_6) (*ebiten.Image, float64, float64, fixed.Int26_6) { func (s *StdFace) glyphImage(r rune, origin fixed.Point26_6) (*ebiten.Image, float64, float64, fixed.Int26_6) {
b, a, _ := s.f.GlyphBounds(r) b, a, _ := s.f.GlyphBounds(r)
// As a StdFace is always horizontal line, subpixels in Y direction doesn't have to be considered.
subpixelOffset := fixed.Point26_6{ subpixelOffset := fixed.Point26_6{
X: (adjustOffsetGranularity(origin.X) + b.Min.X) & ((1 << 6) - 1), X: (adjustOffsetGranularity(origin.X) + b.Min.X) & ((1 << 6) - 1),
Y: (fixed.I(origin.Y.Floor()) + b.Min.Y) & ((1 << 6) - 1),
} }
key := glyphImageCacheKey{ key := glyphImageCacheKey{
rune: r, rune: r,
xoffset: subpixelOffset.X, xoffset: subpixelOffset.X,
// yoffset is always an integer, so this doesn't have to be a key.
} }
img := theGlyphImageCache.getOrCreate(s, key, func() *ebiten.Image { img := theGlyphImageCache.getOrCreate(s, key, func() *ebiten.Image {
return s.glyphImageImpl(r, subpixelOffset, b) return s.glyphImageImpl(r, subpixelOffset, b)