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Try rounding the values when resizing wxImage instead of truncating.

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This would seem to make more sense and might also fix the test failures
resulting from tiny differences in arithmetic operations when compiled with
different compilers/under different architectures.

Regenerate the test files and commit (disabled) change to the unit test
allowing to do it again in the future.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75715 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2014-01-26 16:24:42 +00:00
parent ca5f92da94
commit f4c9767b49
6 changed files with 10 additions and 3 deletions
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6
src/common/image.cpp
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@@ -769,9 +769,9 @@ wxImage wxImage::ResampleBilinear(int width, int height) const
// result lines
dst_data[0] = static_cast<unsigned char>(r1 * dy1 + r2 * dy);
dst_data[1] = static_cast<unsigned char>(g1 * dy1 + g2 * dy);
dst_data[2] = static_cast<unsigned char>(b1 * dy1 + b2 * dy);
dst_data[0] = static_cast<unsigned char>(r1 * dy1 + r2 * dy + .5);
dst_data[1] = static_cast<unsigned char>(g1 * dy1 + g2 * dy + .5);
dst_data[2] = static_cast<unsigned char>(b1 * dy1 + b2 * dy + .5);
dst_data += 3;
if ( src_alpha )