On Thu, 1 Aug 2024 21:51:04 GMT, Daniel Gredler <d...@openjdk.org> wrote:

>> At some point the `JPEGImageWriter` was optimized to reduce duplication / 
>> copying of rasters and data buffers (see `JDK-6266748`). However, 
>> `PNGImageWriter` never received a similar optimization, and is making 
>> unnecessary copies of raster and data buffers whenever PNG images are 
>> written.
>> 
>> Measurements: In a local test, `PNGImageWriter.write( )` and callees were 
>> initially showing up as an allocation hotspot (~400k objects / ~65 MB 
>> allocated), but after these optimizations I'm seeing much better numbers 
>> (~400 objects / ~740 KB allocated).
>
> Daniel Gredler has updated the pull request incrementally with two additional 
> commits since the last revision:
> 
>  - JDK-8337681: add tests for TYPE_4BYTE_ABGR
>  - JDK-8337681: add tests for TYPE_INT_RGB

@gredler 
Your change (at version 9285d44cc62233fce2283f4844dc055fa0720a5c) is now ready 
to be sponsored by a Committer.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/20432#issuecomment-2266673962

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