Frank Barchard 38e21134f7 [libyuv] Add ARGBOr and ARGBAlphaBlend with multi-platform SIMD ... Add two new planar/row compositing functions for 32-bit ARGB/BGRA scanlines: - ARGBOr / ARGBOrRow_*: Applies a bitwise OR with a 32-bit ARGB mask to every pixel (e.g., 0xFF000000 to force opaque alpha for BGRx to BGRA conversion). Implemented for C, SSE2, AVX2, AVX-512BW, NEON (32/64-bit), SVE2, SME, RVV, WASMSIMD, LSX, LASX, HVX, and Windows intrinsics (row_win.cc). - ARGBAlphaBlend / ARGBAlphaBlendRow_*: Implements straight-alpha (unattenuated) Porter-Duff source-over blending matching PDFium's CompositeRowBgra2Bgra: dst_a = back_a + src_a - (back_a * src_a) / 255 ratio = (src_a * 255) / dst_a dst_c = (back_c * (255 - ratio) + src_c * ratio) / 255 Implemented with bit-exact division by 255 across all 65,536 (back_a, src_a) pairs for C, SSSE3, AVX2, AVX-512BW, NEON (32/64-bit), SVE2, SME, RVV, WASMSIMD, LSX, LASX, HVX, and Windows intrinsics (row_win.cc). ARGBOr Performance (2048x64 BGRx->BGRA scanlines, us per call): uArch Before Highway libyuv vs Hwy ------------------------ ------ ------- ------- ------ Qualcomm Hexagon v81 HVX 259.63 260.97 15.78 16.54x SiFive X280 (RVV) 1107.57 72.49 50.70 1.43x SiFive X390 (RVV) 1108.82 70.42 52.26 1.35x ARGBAlphaBlend Performance (2048x64 BGRA scanlines, us per call): uArch Before Highway libyuv vs Hwy ------------------------ ------ ------- ------- ------ Intel Lion Cove (AVX2) 429.79 141.97 41.89 3.39x Intel Cougar Cove (AVX2) 516.83 181.98 51.33 3.55x Intel Golden Cove (AVX2) 560.31 206.28 67.08 3.08x AMD Zen 3 (AVX2) 1025.73 251.09 98.99 2.54x Wasm SIMD128 (V8) 1014.14 964.83 385.80 2.50x Apple M6 Super (NEON) 221.90 118.42 46.35 2.55x Apple M5 Super (NEON) 241.90 130.07 49.60 2.62x ARM C1-Ultra (SME2) 384.63 112.52 63.62 1.77x Qualcomm Oryon V3-L (SME) 388.13 154.87 87.65 1.77x Qualcomm Oryon-L (NEON) 318.28 149.36 57.23 2.61x ARM Cortex-X4 (SVE2) 675.47 213.56 102.53 2.08x ARM Cortex-A720 (NEON) 795.85 586.55 235.81 2.49x ARM Cortex-A520 (NEON) 2360.95 2122.99 787.65 2.70x ARM Cortex-A35 (ARMv7) 4907.31 5895.04 1474.51 4.00x SiFive X280 (RVV) 4145.06 1096.42 596.82 1.84x SiFive X390 (RVV) 4144.57 1084.93 597.62 1.82x Qualcomm Hexagon v81 HVX 4912.03 5786.25 952.19 6.08x Coral V4 RVV (1024 px) 50276 c 48992 c 4299 c 11.40x R=wtc@google.com Bug: none Change-Id: If661239826a033e89d4b5c1adc0bfdf048a7a726 Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/8647895 Reviewed-by: richard winterton <rrwinterton@gmail.com>		2026-10-26 11:24:16 -07:00
..
libyuv	[libyuv] Add ARGBOr and ARGBAlphaBlend with multi-platform SIMD	2026-10-26 11:24:16 -07:00
libyuv.h	libyuv.h: Add scale_rgb.h and remove scale_row.h	2026-08-26 19:06:22 -07:00