My favorites | Sign in
Project Home Downloads Issues
New issue   Search
for
  Advanced search   Search tips   Subscriptions
Issue 130: Windows (XP + WIC) alpha conversion issue
1 person starred this issue and may be notified of changes. Back to list
Status:  Fixed
Owner:  jz...@google.com
Closed:  Oct 2012


Sign in to add a comment
 
Project Member Reported by jz...@google.com, 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
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
Project Member #1 jz...@google.com
The issue seems to be in converting the source, reported as 32bpp BGRA, to the requested RGBA.
Oct 23, 2012
Project Member #2 jz...@google.com
https://gerrit.chromium.org/gerrit/#/c/36173/

This has been merged:
 4828bb9 Merge "cwebp (windows): fix alpha image import on XP"
Status: Fixed
Sign in to add a comment

Powered by Google Project Hosting