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| author | Allan Sandfeld Jensen <allan.jensen@theqtcompany.com> | 2016-09-06 11:03:33 +0200 |
|---|---|---|
| committer | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2016-09-09 14:31:24 +0000 |
| commit | 806b45e7c76f6825e32fde10824beb62eecc40ab (patch) | |
| tree | 8013541d154202783de4e8fd9fa9620bd9945460 /src/gui/painting/qdrawhelper_p.h | |
| parent | fe82f50a65ecafee9ea7d0e48cf3bb2106414001 (diff) | |
Make blendPixel function general
Moves the blendPixel function from the SSSE3 file and use it more
generally, also adds a const_alpha version.
Change-Id: Ia29d1ab3879a845d5b65e0610b7836507e33c7ed
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/gui/painting/qdrawhelper_p.h')
| -rw-r--r-- | src/gui/painting/qdrawhelper_p.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/gui/painting/qdrawhelper_p.h b/src/gui/painting/qdrawhelper_p.h index 664117a730..45a3174734 100644 --- a/src/gui/painting/qdrawhelper_p.h +++ b/src/gui/painting/qdrawhelper_p.h @@ -636,6 +636,22 @@ static Q_ALWAYS_INLINE uint BYTE_MUL(uint x, uint a) { } #endif +static Q_ALWAYS_INLINE void blend_pixel(quint32 &dst, const quint32 src) +{ + if (src >= 0xff000000) + dst = src; + else if (src != 0) + dst = src + BYTE_MUL(dst, qAlpha(~src)); +} + +static Q_ALWAYS_INLINE void blend_pixel(quint32 &dst, const quint32 src, const int const_alpha) +{ + if (src != 0) { + const quint32 s = BYTE_MUL(src, const_alpha); + dst = s + BYTE_MUL(dst, qAlpha(~s)); + } +} + #if defined(__SSE2__) static Q_ALWAYS_INLINE uint interpolate_4_pixels_sse2(__m128i vt, __m128i vb, uint distx, uint disty) { |