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-rw-r--r--pngwrite.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/pngwrite.c b/pngwrite.c
index cc60d769b..27744a7b5 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1347,11 +1347,6 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
{
if (png_ptr == NULL || info_ptr == NULL)
return;
-#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
- /* Invert the alpha channel from opacity to transparency */
- if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
- png_set_invert_alpha(png_ptr);
-#endif
/* Write the file header information. */
png_write_info(png_ptr, info_ptr);
@@ -1411,6 +1406,12 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
png_set_packswap(png_ptr);
#endif
+#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
+ /* Invert the alpha channel from opacity to transparency */
+ if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
+ png_set_invert_alpha(png_ptr);
+#endif
+
/* ----------------------- end of transformations ------------------- */
/* Write the bits */