diff options
Diffstat (limited to 'tools/picture_utils.cpp')
| -rw-r--r-- | tools/picture_utils.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/tools/picture_utils.cpp b/tools/picture_utils.cpp index bd32f1938e..db245538d4 100644 --- a/tools/picture_utils.cpp +++ b/tools/picture_utils.cpp @@ -113,10 +113,11 @@ namespace sk_tools { SkHalfToFloat(static_cast<SkHalf>(px[i] >> (1 * 16))), SkHalfToFloat(static_cast<SkHalf>(px[i] >> (2 * 16))), SkHalfToFloat(static_cast<SkHalf>(px[i] >> (3 * 16)))); - fs = Sk4f::Max(0.0f, Sk4f::Min(fs, 1.0f)); // Clamp - float invA = 1.0f / fs[3]; - fs = fs * Sk4f(invA, invA, invA, 1); // Unpremultiply. - rgba[i] = Sk4f_toS32(fs); // Pack down to sRGB bytes. + if (fs[3]) { // Unpremultiply. + fs *= Sk4f(1/fs[3], 1/fs[3], 1/fs[3], 1); + } + fs = Sk4f::Max(0.0f, Sk4f::Min(fs, 1.0f)); // Clamp to [0,1]. + rgba[i] = Sk4f_toS32(fs); // Pack down to sRGB bytes. } } else { |