Frank Barchard 339feb40e7 [libyuv] Optimize SsimWindowRow with SIMD and use compare_win on x86-32 ... - Route 32-bit x86 (__i386__ / _M_IX86) to compare_win.cc (intrinsics) and restrict compare_gcc.cc to 64-bit x86 (__x86_64__), avoiding x87 float discrepancies and enabling SSE2, AVX2, and AVX-512 on 32-bit and 64-bit MinGW, GCC, Clang, and MSan (LIBYUV_ENABLE_ROWWIN). - Enable AVX-512BW on GCC >= 6 (GCC_HAS_AVX512) and add LIBYUV_TARGET_AVX512BW attributes to compare_gcc.cc and compare_win.cc. - Refactor SsimWindowRow_C and Ssim8x8_C to use int32_t and float, and add SsimWindowRow_SSE2, SsimWindowRow_AVX2, and SsimWindowRow_AVX512BW in both compare_win.cc and compare_gcc.cc (~10x faster end-to-end SSIM). - Update SSIM unit tests in compare_test.cc to use EXPECT_NEAR, deterministic test patterns (identical, different, similar), and benchmark_iterations_. - Update util/compare.cc and linux.mk to compute I420Ssim / CalcFrameSsim. R=rrwinterton@gmail.com Bug: b/493910265 Test: out/Release/libyuv_unittest --gtest_filter=*Ssim* Co-authored-by: Martin Storsjö <martin@martin.st>		2026-10-20 13:43:58 -07:00
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libyuv	[libyuv] Optimize SsimWindowRow with SIMD and use compare_win on x86-32	2026-10-20 13:43:58 -07:00
libyuv.h	libyuv.h: Add scale_rgb.h and remove scale_row.h	2026-08-26 19:06:22 -07:00