Add primitive support for transparency in WEBP images.

jasper-software / xv

XV Software

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Add primitive support for transparency in WEBP images. #22

Closed thargol closed 4 months ago

thargol commented 4 months ago

I added WEBP support to xv a couple of years ago, but never got around to submitting it. When I came to do so, I saw that the support already existed, so my change was no longer needed. However, I had done a better job of handling images with an alpha channel, so I've added those changes here.

Tested with the sample WEBP images at https://developers.google.com/speed/webp/gallery2

mdadams commented 4 months ago

@tanabi Since you did the original WEBP work and the code changes look okay to you, I will merge the PR.