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Issue 130: Windows (XP + WIC) alpha conversion issue
1 person starred this issue and may be notified of changes. Back to list
Status:  Fixed
Closed:  Oct 2012

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Project Member Reported by, Oct 16, 2012
What steps will reproduce the problem?
1. XP SP3 (tested with ie6, ie7, fairly recently patched)
2. Use cwebp.exe built with WIC support to convert a PNG with alpha

What is the expected output?
A webp file compressed with alpha.

What do you see instead?
A conversion error similar to:
IWICFormatConverter_Initialize(pConverter, (IWICBitmapSource*)pFrame, has_alpha
24bppRGB_), WICBitmapDitherTypeNone, NULL, 0.0, WICBitmapPaletteTypeCustom) fail
ed 88982f50

Oct 16, 2012
Project Member #1
The issue seems to be in converting the source, reported as 32bpp BGRA, to the requested RGBA.
Oct 23, 2012
Project Member #2

This has been merged:
 4828bb9 Merge "cwebp (windows): fix alpha image import on XP"
Status: Fixed
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