diff options
Diffstat (limited to 'src/gui/painting/qrgb.h')
| -rw-r--r-- | src/gui/painting/qrgb.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/src/gui/painting/qrgb.h b/src/gui/painting/qrgb.h index 6b0516e557..e6bda490ff 100644 --- a/src/gui/painting/qrgb.h +++ b/src/gui/painting/qrgb.h @@ -72,9 +72,11 @@ inline Q_DECL_CONSTEXPR int qGray(QRgb rgb) // convert RGB to gra inline Q_DECL_CONSTEXPR bool qIsGray(QRgb rgb) { return qRed(rgb) == qGreen(rgb) && qRed(rgb) == qBlue(rgb); } +template <int ProcessorWordSize> +inline QRgb qPremultiply_impl(QRgb x); -#if Q_PROCESSOR_WORDSIZE == 8 // 64-bit version -inline QRgb qPremultiply(QRgb x) +template <> // 64-bit version +inline QRgb qPremultiply_impl<8>(QRgb x) { const uint a = qAlpha(x); quint64 t = (((quint64(x)) | ((quint64(x)) << 24)) & 0x00ff00ff00ff00ff) * a; @@ -82,8 +84,9 @@ inline QRgb qPremultiply(QRgb x) t &= 0x000000ff00ff00ff; return (uint(t)) | (uint(t >> 24)) | (a << 24); } -#else // 32-bit version -inline QRgb qPremultiply(QRgb x) + +template <> // 32-bit version +inline QRgb qPremultiply_impl<4>(QRgb x) { const uint a = qAlpha(x); uint t = (x & 0xff00ff) * a; @@ -96,7 +99,8 @@ inline QRgb qPremultiply(QRgb x) x |= t | (a << 24); return x; } -#endif + +inline QRgb qPremultiply(QRgb x) { return qPremultiply_impl<Q_PROCESSOR_WORDSIZE>(x); } Q_GUI_EXPORT extern const uint qt_inv_premul_factor[]; |