On Wed, 31 Mar 2021 21:31:43 GMT, Sergey Bylokhov <s...@openjdk.org> wrote:
>> The lcms 2.8 version added support for the cmsFLAGS_COPY_ALPHA flag: >> https://sourceforge.net/p/lcms/mailman/lcms-user/thread/001c01d1c0f3%2484a7cb30%248df76190%24%40ProDigitalSoftware.com/#msg35143398 >> >> which supports alpha channel transportation >> >> For our usage, it means we can use TYPE_4BYTE_ABGR and TYPE_INT_ARGB >> directly as a source and destination. >> >> Some numbers: >> converting new BufferedImage(3000, 3000, TYPE_INT_ARGB) from CS_sRGB to >> CS_CIEXYZ via op.filter(src, dst). >> //before the fix >> //Benchmark Mode Cnt Score Error Units >> //ColorAlphaConv.testFilter avgt 5 603,392 ± 12,932 ms/op >> >> //after the fix >> //Benchmark Mode Cnt Score Error Units >> //ColorAlphaConv.testFilter avgt 5 121,624 ± 0,906 ms/op >> >> But still slower than kcms >> //kcms jdk8u60 >> //Benchmark Mode Cnt Score Error Units >> //ColorAlphaConv.testFilter avgt 5 13,256 ± 0,169 ms/op > > Sergey Bylokhov has updated the pull request with a new target base due to a > merge or a rebase. The incremental webrev excludes the unrelated changes > brought in by the merge/rebase. The pull request contains three additional > commits since the last revision: > > - Merge branch 'master' into JDK-8012229 > - Update ColCvtAlphaDifferentSrcDst.java > - Initial fix Marked as reviewed by azvegint (Reviewer). ------------- PR: https://git.openjdk.java.net/jdk/pull/3239
