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+ pre-multiply rendering buffer after applying background color and/or pattern

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This commit is contained in:
artemp 2012-08-03 15:37:05 +01:00
parent 5414912160
commit 8c98d8a199
1 changed files with 4 additions and 1 deletions
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5
src/agg/agg_renderer.cpp
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@ -159,6 +159,10 @@ void agg_renderer<T>::setup(Map const &m)
}
}
agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4);
agg::pixfmt_rgba32 pixf(buf);
pixf.premultiply();
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: Scale=" << m.scale();
}
@ -169,7 +173,6 @@ template <typename T>
void agg_renderer<T>::start_map_processing(Map const& map)
{
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: Start map processing bbox=" << map.get_current_extent();
ras_ptr->clip_box(0,0,width_,height_);
}