|Issue 130:||Windows (XP + WIC) alpha conversion issue|
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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 3. 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 ? MAKE_REFGUID(GUID_WICPixelFormat32bppRGBA_) : MAKE_REFGUID(GUID_WICPixelFormat 24bppRGB_), WICBitmapDitherTypeNone, NULL, 0.0, WICBitmapPaletteTypeCustom) fail ed 88982f50
Oct 16, 2012
The issue seems to be in converting the source, reported as 32bpp BGRA, to the requested RGBA.
Oct 23, 2012
https://gerrit.chromium.org/gerrit/#/c/36173/ This has been merged: 4828bb9 Merge "cwebp (windows): fix alpha image import on XP"
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