diff options
| author |  reed@google.com <reed@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2011-06-30 21:06:22 +0000 |
|---|---|---|
| committer | reed@google.com <reed@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2011-06-30 21:06:22 +0000 |
| commit | 0b8b3bb08330dd341acbd52c16e55455325e465a (patch) | |
| tree | 5d82858bc74fdd36c8e0cd42b8770870fcecab87 /include/core/SkColorPriv.h | |
| parent | e620ad299f28512f98314da41528fe9f71ebb4cc (diff) | |
make inline version of premultiply, to speed up gradient creation.
We could speed-up again if we...
- respected kDither and only built 1/2 of the table for non-dither requests
- output simple params to the gpu rather than always a texture
- detected that we have no alpha, and then can skip premul per-entry
git-svn-id: http://skia.googlecode.com/svn/trunk@1772 2bbb7eff-a529-9590-31e7-b0007b416f81
Diffstat (limited to 'include/core/SkColorPriv.h')
| -rw-r--r-- | include/core/SkColorPriv.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/core/SkColorPriv.h b/include/core/SkColorPriv.h index 6fa9df365d..bd680f3fa8 100644 --- a/include/core/SkColorPriv.h +++ b/include/core/SkColorPriv.h @@ -216,6 +216,21 @@ static inline SkPMColor SkPackARGB32NoCheck(U8CPU a, U8CPU r, U8CPU g, U8CPU b) (g << SK_G32_SHIFT) | (b << SK_B32_SHIFT); } +static inline +SkPMColor SkPremultiplyARGBInline(U8CPU a, U8CPU r, U8CPU g, U8CPU b) { + SkA32Assert(a); + SkASSERT(r <= a); + SkASSERT(g <= a); + SkASSERT(b <= a); + + if (a != 255) { + r = SkMulDiv255Round(r, a); + g = SkMulDiv255Round(g, a); + b = SkMulDiv255Round(b, a); + } + return SkPackARGB32(a, r, g, b); +} + SK_API extern const uint32_t gMask_00FF00FF; static inline uint32_t SkAlphaMulQ(uint32_t c, unsigned scale) { |