diff options
Diffstat (limited to 'base/gfx/png_encoder.cc')
| -rw-r--r-- | base/gfx/png_encoder.cc | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/base/gfx/png_encoder.cc b/base/gfx/png_encoder.cc index f8b4bf0..c342736 100644 --- a/base/gfx/png_encoder.cc +++ b/base/gfx/png_encoder.cc @@ -7,6 +7,7 @@ #include "base/logging.h" #include "base/scoped_ptr.h" #include "third_party/skia/include/core/SkBitmap.h" +#include "third_party/skia/include/core/SkUnPreMultiply.h" extern "C" { #include "third_party/libpng/png.h" @@ -214,9 +215,10 @@ bool PNGEncoder::EncodeBGRASkBitmap(const SkBitmap& input, int alpha = SkColorGetA(pixel); if (alpha != 0 && alpha != 255) { - divided[i + 0] = (SkColorGetR(pixel) << 8) / alpha; - divided[i + 1] = (SkColorGetG(pixel) << 8) / alpha; - divided[i + 2] = (SkColorGetB(pixel) << 8) / alpha; + SkColor unmultiplied = SkUnPreMultiply::PMColorToColor(pixel); + divided[i + 0] = SkColorGetR(unmultiplied); + divided[i + 1] = SkColorGetG(unmultiplied); + divided[i + 2] = SkColorGetB(unmultiplied); divided[i + 3] = alpha; } else { divided[i + 0] = SkColorGetR(pixel); |