diff options
Diffstat (limited to 'src/gui')
| -rw-r--r-- | src/gui/painting/qpaintengine_blitter.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/gui/painting/qpaintengine_blitter.cpp b/src/gui/painting/qpaintengine_blitter.cpp index 1acdf8c433..c45513b4aa 100644 --- a/src/gui/painting/qpaintengine_blitter.cpp +++ b/src/gui/painting/qpaintengine_blitter.cpp @@ -330,7 +330,11 @@ void QBlitterPaintEnginePrivate::updateTransformState(QPainterState *s) { QTransform::TransformationType type = s->matrix.type(); - caps.updateState(STATE_XFORM_COMPLEX, type > QTransform::TxScale); + // consider scaling operations with a negative factor as "complex" for now. + // as some blitters could handle axisymmetrical operations, we should improve blitter + // paint engine to handle them as a capability + caps.updateState(STATE_XFORM_COMPLEX, (type > QTransform::TxScale) || + ((type == QTransform::TxScale) && ((s->matrix.m11() < 0.0) || (s->matrix.m22() < 0.0)))); caps.updateState(STATE_XFORM_SCALE, type > QTransform::TxTranslate); hasXForm = type >= QTransform::TxTranslate; |