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Change wxImage::ResampleBox() to avoid MSVS 2022 optimizer bug

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Calculate averaged_pixels directly instead of doing it in a loop as we
somehow end up with a value of 0 for it when using MSVS 2022 optimized
64-bit build.

See #22761.
This commit is contained in:
Maarten Bent
2022-09-02 23:00:23 +02:00
committed by Vadim Zeitlin
parent ab2dd24976
commit c6c6dacd64
1 changed files with 2 additions and 3 deletions
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src/common/image.cpp
+2 -3
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@@ -673,7 +673,8 @@ wxImage wxImage::ResampleBox(int width, int height) const
const BoxPrecalc& hPrecalc = hPrecalcs[x];
// Box of pixels to average
averaged_pixels = 0;
averaged_pixels = (vPrecalc.boxEnd - vPrecalc.boxStart + 1)
* (hPrecalc.boxEnd - hPrecalc.boxStart + 1);
sum_r = sum_g = sum_b = sum_a = 0.0;
for ( int j = vPrecalc.boxStart; j <= vPrecalc.boxEnd; ++j )
@@ -696,8 +697,6 @@ wxImage wxImage::ResampleBox(int width, int height) const
sum_g += src_data[src_pixel_index * 3 + 1];
sum_b += src_data[src_pixel_index * 3 + 2];
}
averaged_pixels++;
}
}