diff options
Diffstat (limited to 'src/gui/painting/qdrawhelper_p.h')
| -rw-r--r-- | src/gui/painting/qdrawhelper_p.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/gui/painting/qdrawhelper_p.h b/src/gui/painting/qdrawhelper_p.h index d04c70d..75f42a0 100644 --- a/src/gui/painting/qdrawhelper_p.h +++ b/src/gui/painting/qdrawhelper_p.h @@ -1944,6 +1944,30 @@ const uint qt_bayer_matrix[16][16] = { ((((argb >> 24) * alpha) >> 8) << 24) | (argb & 0x00ffffff) +#if QT_POINTER_SIZE == 8 // 64-bit versions +#define AMIX(mask) (qMin(((qint64(s)&mask) + (qint64(d)&mask)), qint64(mask))) +#define MIX(mask) (qMin(((qint64(s)&mask) + (qint64(d)&mask)), qint64(mask))) +#else // 32 bits +// The mask for alpha can overflow over 32 bits +#define AMIX(mask) quint32(qMin(((qint64(s)&mask) + (qint64(d)&mask)), qint64(mask))) +#define MIX(mask) (qMin(((quint32(s)&mask) + (quint32(d)&mask)), quint32(mask))) +#endif + +inline int comp_func_Plus_one_pixel_const_alpha(uint d, const uint s, const uint const_alpha, const uint one_minus_const_alpha) +{ + const int result = (AMIX(AMASK) | MIX(RMASK) | MIX(GMASK) | MIX(BMASK)); + return INTERPOLATE_PIXEL_255(result, const_alpha, d, one_minus_const_alpha); +} + +inline int comp_func_Plus_one_pixel(uint d, const uint s) +{ + const int result = (AMIX(AMASK) | MIX(RMASK) | MIX(GMASK) | MIX(BMASK)); + return result; +} + +#undef MIX +#undef AMIX + // prototypes of all the composition functions void QT_FASTCALL comp_func_SourceOver(uint *dest, const uint *src, int length, uint const_alpha); void QT_FASTCALL comp_func_DestinationOver(uint *dest, const uint *src, int length, uint const_alpha); |