Update libwebp to 1.6.0 #163
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- Update externals/skia submodule to include libwebp 1.6.0 - Update cgmanifest.json with new commit hash Related to #3055 Required skia PR: mono/skia#163
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- Update externals/skia submodule to include libwebp 1.6.0 - Update cgmanifest.json with new commit hash Related to #3055 Required skia PR: mono/skia#163
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- Bump libwebp from v1.3.2 to v1.6.0 - Add src/utils/palette.c to BUILD.gn (new file in v1.6.0) Security hardening and bug fixes: - Additional AVX2/SSE2 optimizations - Fix heap overflow in webpmux - Increased fuzzing coverage - Various bug and warning fixes Ref: https://github.com/webmproject/libwebp/releases/tag/v1.6.0
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libwebp 1.6.0 added AVX2 optimizations in new source files: - src/dsp/lossless_avx2.c - src/dsp/lossless_enc_avx2.c On Windows with clang-cl, _MSC_VER is defined which triggers WEBP_MSC_AVX2, enabling the AVX2 code path. However, these source files are not in BUILD.gn, causing undefined symbol errors at link time. Disable AVX2 for now by defining WEBP_HAVE_AVX2=0. This maintains current behavior while allowing the libwebp bump to proceed. A follow-up issue will track enabling AVX2 support properly.
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Add libwebp_avx2 target with AVX2 source files: - lossless_avx2.c - lossless_enc_avx2.c Uses -mavx2 flag for clang on x86/x64 platforms. Runtime CPU detection ensures AVX2 code only runs on supported CPUs. Closes mono/SkiaSharp#3464
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Description of Change
Update libwebp from v1.3.2 to v1.6.0
Changes
src/utils/palette.cto BUILD.gn (new file in v1.6.0)Highlights from v1.4.0 - v1.6.0:
SkiaSharp Issue
Related to mono/SkiaSharp#3055
API Changes
None (binary compatible).
Behavioral Changes
None.
Required SkiaSharp PR
mono/SkiaSharp#3461
PR Checklist