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[devel] Fixed a problem in png_do_expand_palette() exposed by optimization in

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1.5.3beta06
  Also removed a spurious (totally unused and confusing) member from png_info.
  The palette expand optimization prevented expansion to an intermediate RGBA
    form if tRNS was present but alpha was marked to be stripped; this exposed
    a check for tRNS in png_do_expand_palette() which is inconsistent with the
    code elsewhere in libpng.
This commit is contained in:
John Bowler
2011-06-14 23:01:07 -05:00
committed by Glenn Randers-Pehrson
parent 06a9684cfa
commit cd3b0cc4d9
4 changed files with 31 additions and 18 deletions
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pnginfo.h
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@@ -138,7 +138,6 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
* single color specified that should be treated as fully transparent.
* Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
*/
png_bytep trans; /* alpha values for paletted image */
png_bytep trans_alpha; /* alpha values for paletted image */
png_color_16 trans_color; /* transparent color for non-palette image */
#endif