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Merge branch 'master' of github.com:mapnik/mapnik

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Dane Springmeyer 2012-02-22 14:54:26 -08:00
commit 4a3bd9cd58
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include/mapnik/png_io.hpp
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@ -487,7 +487,7 @@ void save_as_png8(T1 & file, T2 const& image, T3 const & tree,
else else
{ {
// <=16 colors -> write 4-bit color depth PNG // <=16 colors -> write 4-bit color depth PNG
unsigned image_width = (int(0.5*width) + 3)&~3; unsigned image_width = width > 3 ? (int(0.5*width) + 3)&~3 : 4;
unsigned image_height = height; unsigned image_height = height;
image_data_8 reduced_image(image_width, image_height); image_data_8 reduced_image(image_width, image_height);
for (unsigned y = 0; y < height; ++y) for (unsigned y = 0; y < height; ++y)