diff options
| -rw-r--r-- | src/gui/painting/qdrawhelper.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp index 84cf5cc..9bb4486 100644 --- a/src/gui/painting/qdrawhelper.cpp +++ b/src/gui/painting/qdrawhelper.cpp @@ -1364,7 +1364,10 @@ static void QT_FASTCALL comp_func_SourceOver(uint *dest, const uint *src, int le for (int i = 0; i < length; ++i) { PRELOAD_COND2(dest, src) uint s = src[i]; - dest[i] = s + BYTE_MUL(dest[i], qAlpha(~s)); + if (s >= 0xff000000) + dest[i] = s; + else if (s != 0) + dest[i] = s + BYTE_MUL(dest[i], qAlpha(~s)); } } else { for (int i = 0; i < length; ++i) { |