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Diffstat (limited to 'src/gui/painting/qdrawhelper.cpp')
| -rw-r--r-- | src/gui/painting/qdrawhelper.cpp | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp index 8729640a80..30d3dee473 100644 --- a/src/gui/painting/qdrawhelper.cpp +++ b/src/gui/painting/qdrawhelper.cpp @@ -5753,9 +5753,9 @@ static inline void rgbBlendPixel(quint32 *dst, int coverage, int sr, int sg, int dg = gamma[dg]; db = gamma[db]; - int nr = qt_div_255((sr - dr) * mr) + dr; - int ng = qt_div_255((sg - dg) * mg) + dg; - int nb = qt_div_255((sb - db) * mb) + db; + int nr = qt_div_255(sr * mr + dr * (255 - mr)); + int ng = qt_div_255(sg * mg + dg * (255 - mg)); + int nb = qt_div_255(sb * mb + db * (255 - mb)); nr = invgamma[nr]; ng = invgamma[ng]; @@ -5780,9 +5780,9 @@ static inline void grayBlendPixel(quint32 *dst, int coverage, int sr, int sg, in int alpha = coverage; int ialpha = 255 - alpha; - int nr = (sr * alpha + ialpha * dr) / 255; - int ng = (sg * alpha + ialpha * dg) / 255; - int nb = (sb * alpha + ialpha * db) / 255; + int nr = qt_div_255(sr * alpha + dr * ialpha); + int ng = qt_div_255(sg * alpha + dg * ialpha); + int nb = qt_div_255(sb * alpha + db * ialpha); nr = invgamma[nr]; ng = invgamma[ng]; |