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-rw-r--r--libs/hwui/font/Font.cpp14
1 files changed, 7 insertions, 7 deletions
diff --git a/libs/hwui/font/Font.cpp b/libs/hwui/font/Font.cpp
index b07a3c8bdd67..5de64a4b1654 100644
--- a/libs/hwui/font/Font.cpp
+++ b/libs/hwui/font/Font.cpp
@@ -228,15 +228,15 @@ void Font::drawCachedGlyphBitmap(CachedGlyphInfo* glyph, int x, int y, uint8_t*
for (uint32_t cacheY = startY, bitmapY = dstY * bitmapWidth; cacheY < endY;
cacheY += srcStride, bitmapY += bitmapWidth) {
- if (formatSize == 1) {
- memcpy(&bitmap[bitmapY + dstX], &cacheBuffer[cacheY + glyph->mStartX], glyph->mBitmapWidth);
- } else {
- for (uint32_t i = 0; i < glyph->mBitmapWidth; ++i) {
- bitmap[bitmapY + dstX + i] = cacheBuffer[cacheY + (glyph->mStartX + i)*formatSize + alpha_channel_offset];
- }
+ for (uint32_t i = 0; i < glyph->mBitmapWidth; ++i) {
+ uint8_t* dst = &(bitmap[bitmapY + dstX + i]);
+ const uint8_t& src = cacheBuffer[
+ cacheY + (glyph->mStartX + i)*formatSize + alpha_channel_offset];
+ // Add alpha values to a max of 255, full opacity. This is done to handle
+ // fonts/strings where glyphs overlap.
+ *dst = std::min(*dst + src, 255);
}
}
-
}
void Font::drawCachedGlyph(CachedGlyphInfo* glyph, float x, float hOffset, float vOffset,