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fix handling of premultiplication in svg rendering - refs #1262

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This commit is contained in:
Dane Springmeyer 2012-06-19 17:37:24 -04:00
parent 48a543b5d5
commit f60d85e2e7
1 changed files with 3 additions and 1 deletions
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4
include/mapnik/svg/svg_renderer.hpp
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@ -147,7 +147,7 @@ public:
unsigned b = stop_color.blue();
unsigned a = stop_color.alpha();
//MAPNIK_LOG_DEBUG(svg_renderer) << "svg_renderer: r=" << r << ",g=" << g << ",b=" << b << ",a=" << a;
m_gradient_lut.add_color(st.first, agg::rgba8(r, g, b, int(a * opacity)));
m_gradient_lut.add_color(st.first, agg::rgba8_pre(r, g, b, int(a * opacity)));
}
m_gradient_lut.build_lut();
@ -300,6 +300,7 @@ public:
color = attr.fill_color;
color.opacity(color.opacity() * attr.opacity * opacity);
ScanlineRenderer ren_s(ren);
color.premultiply();
ren_s.color(color);
render_scanlines(ras, sl, ren_s);
}
@ -335,6 +336,7 @@ public:
color = attr.stroke_color;
color.opacity(color.opacity() * attr.opacity * opacity);
ScanlineRenderer ren_s(ren);
color.premultiply();
ren_s.color(color);
render_scanlines(ras, sl, ren_s);
}