Add support for compressed alpha ktx files

Add support for compressed alpha ktx files

Committed: https://skia.googlesource.com/skia/+/86bc1247d28c59f29eaf0df75c06636cab4f7d37

[robertphillips, 2014-08-07 16:37:29]

lgtm

https://codereview.chromium.org/447283002/diff/1/src/images/SkImageDecoder_kt...
File src/images/SkImageDecoder_ktx.cpp (right):

https://codereview.chromium.org/447283002/diff/1/src/images/SkImageDecoder_kt...
src/images/SkImageDecoder_ktx.cpp:163: 
Couldn't we say "ktxIsCompressed && SkTextureCompressor::kETC1_Format ==
ktxCompressedFormat" here? Don't know if it is any better.

[krajcevski, 2014-08-07 17:48:45]

On 2014/08/07 16:37:29, robertphillips wrote:
> lgtm
> 
>
https://codereview.chromium.org/447283002/diff/1/src/images/SkImageDecoder_kt...
> File src/images/SkImageDecoder_ktx.cpp (right):
> 
>
https://codereview.chromium.org/447283002/diff/1/src/images/SkImageDecoder_kt...
> src/images/SkImageDecoder_ktx.cpp:163: 
> Couldn't we say "ktxIsCompressed && SkTextureCompressor::kETC1_Format ==
> ktxCompressedFormat" here? Don't know if it is any better.

I erred on the side of keeping consistent with the rest of the if-statement.

[krajcevski, 2014-08-07 17:48:50]

The CQ bit was checked by krajcevski@google.com

[commit-bot: I haz the power, 2014-08-07 17:49:57]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/krajcevski@google.com/447283002/1

[commit-bot: I haz the power, 2014-08-07 17:58:58]

Change committed as 86bc1247d28c59f29eaf0df75c06636cab4f7d37