[Pixman] [PATCH 3/3] sse2: Bilinear scaled over_8888_8_8888

[Taekyun Kim]

From: Taekyun Kim <tkq.kim at samsung.com>

---
 pixman/pixman-sse2.c |  168 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 168 insertions(+), 0 deletions(-)

diff --git a/pixman/pixman-sse2.c b/pixman/pixman-sse2.c
index af897f9..05de810 100644
--- a/pixman/pixman-sse2.c
+++ b/pixman/pixman-sse2.c
@@ -5496,6 +5496,169 @@ FAST_BILINEAR_MAINLOOP_COMMON (sse2_8888_8888_normal_OVER,
 			       uint32_t, uint32_t, uint32_t,
 			       NORMAL, FLAG_NONE)
 
+static force_inline void
+scaled_bilinear_scanline_sse2_8888_8_8888_OVER (uint32_t *       dst,
+						const uint8_t  * mask,
+						const uint32_t * src_top,
+						const uint32_t * src_bottom,
+						int32_t          w,
+						int              wt,
+						int              wb,
+						pixman_fixed_t   vx,
+						pixman_fixed_t   unit_x,
+						pixman_fixed_t   max_vx,
+						pixman_bool_t    zero_src)
+{
+    BILINEAR_DECLARE_VARIABLES;
+    uint32_t pix1, pix2, pix3, pix4;
+    uint32_t m;
+
+    while (w && ((unsigned long)dst & 15))
+    {
+	uint32_t sa;
+
+	m = (uint32_t) *mask++;
+
+	if (m)
+	{
+	    BILINEAR_INTERPOLATE_ONE_PIXEL (pix1);
+	    sa = pix1 >> 24;
+
+	    if (sa == 0xff && m == 0xff)
+	    {
+		*dst = pix1;
+	    }
+	    else
+	    {
+		__m128i ms, md, ma, msa;
+
+		pix2 = *dst;
+		ma = expand_alpha_rev_1x128 (load_32_1x128 (m));
+		ms = unpack_32_1x128 (pix1);
+		md = unpack_32_1x128 (pix2);
+
+		msa = expand_alpha_rev_1x128 (load_32_1x128 (sa));
+
+		*dst = pack_1x128_32 (in_over_1x128 (&ms, &msa, &ma, &md));
+	    }
+	}
+	else
+	{
+	    BILINEAR_SKIP_ONE_PIXEL ();
+	}
+
+	w--;
+	dst++;
+    }
+
+    while (w >= 4)
+    {
+	__m128i xmm_src, xmm_src_lo, xmm_src_hi, xmm_srca_lo, xmm_srca_hi;
+	__m128i xmm_dst, xmm_dst_lo, xmm_dst_hi;
+	__m128i xmm_mask, xmm_mask_lo, xmm_mask_hi;
+
+	m = *(uint32_t*)mask;
+
+	if (m)
+	{
+	    BILINEAR_INTERPOLATE_ONE_PIXEL (pix1);
+	    BILINEAR_INTERPOLATE_ONE_PIXEL (pix2);
+	    BILINEAR_INTERPOLATE_ONE_PIXEL (pix3);
+	    BILINEAR_INTERPOLATE_ONE_PIXEL (pix4);
+
+	    xmm_src = _mm_set_epi32 (pix4, pix3, pix2, pix1);
+
+	    if (m == 0xffffffff && is_opaque (xmm_src))
+	    {
+		save_128_aligned ((__m128i *)dst, xmm_src);
+	    }
+	    else
+	    {
+		xmm_dst = load_128_aligned ((__m128i *)dst);
+
+		xmm_mask = _mm_unpacklo_epi16 (unpack_32_1x128 (m), _mm_setzero_si128());
+
+		unpack_128_2x128 (xmm_src, &xmm_src_lo, &xmm_src_hi);
+		unpack_128_2x128 (xmm_mask, &xmm_mask_lo, &xmm_mask_hi);
+		unpack_128_2x128 (xmm_dst, &xmm_dst_lo, &xmm_dst_hi);
+
+		expand_alpha_2x128 (xmm_src_lo, xmm_src_hi, &xmm_srca_lo, &xmm_srca_hi);
+		expand_alpha_rev_2x128 (xmm_mask_lo, xmm_mask_hi, &xmm_mask_lo, &xmm_mask_hi);
+
+		in_over_2x128 (&xmm_src_lo, &xmm_src_hi, &xmm_srca_lo, &xmm_srca_hi,
+			       &xmm_mask_lo, &xmm_mask_hi, &xmm_dst_lo, &xmm_dst_hi);
+
+		save_128_aligned ((__m128i*)dst, pack_2x128_128 (xmm_dst_lo, xmm_dst_hi));
+	    }
+	}
+	else
+	{
+	    BILINEAR_SKIP_ONE_PIXEL ();
+	    BILINEAR_SKIP_ONE_PIXEL ();
+	    BILINEAR_SKIP_ONE_PIXEL ();
+	    BILINEAR_SKIP_ONE_PIXEL ();
+	}
+
+	w -= 4;
+	dst += 4;
+	mask += 4;
+    }
+
+    while (w)
+    {
+	uint32_t sa;
+
+	m = (uint32_t) *mask++;
+
+	if (m)
+	{
+	    BILINEAR_INTERPOLATE_ONE_PIXEL (pix1);
+	    sa = pix1 >> 24;
+
+	    if (sa == 0xff && m == 0xff)
+	    {
+		*dst = pix1;
+	    }
+	    else
+	    {
+		__m128i ms, md, ma, msa;
+
+		pix2 = *dst;
+		ma = expand_alpha_rev_1x128 (load_32_1x128 (m));
+		ms = unpack_32_1x128 (pix1);
+		md = unpack_32_1x128 (pix2);
+
+		msa = expand_alpha_rev_1x128 (load_32_1x128 (sa));
+
+		*dst = pack_1x128_32 (in_over_1x128 (&ms, &msa, &ma, &md));
+	    }
+	}
+	else
+	{
+	    BILINEAR_SKIP_ONE_PIXEL ();
+	}
+
+	w--;
+	dst++;
+    }
+}
+
+FAST_BILINEAR_MAINLOOP_COMMON (sse2_8888_8_8888_cover_OVER,
+			       scaled_bilinear_scanline_sse2_8888_8_8888_OVER,
+			       uint32_t, uint8_t, uint32_t,
+			       COVER, FLAG_HAVE_NON_SOLID_MASK)
+FAST_BILINEAR_MAINLOOP_COMMON (sse2_8888_8_8888_pad_OVER,
+			       scaled_bilinear_scanline_sse2_8888_8_8888_OVER,
+			       uint32_t, uint8_t, uint32_t,
+			       PAD, FLAG_HAVE_NON_SOLID_MASK)
+FAST_BILINEAR_MAINLOOP_COMMON (sse2_8888_8_8888_none_OVER,
+			       scaled_bilinear_scanline_sse2_8888_8_8888_OVER,
+			       uint32_t, uint8_t, uint32_t,
+			       NONE, FLAG_HAVE_NON_SOLID_MASK)
+FAST_BILINEAR_MAINLOOP_COMMON (sse2_8888_8_8888_normal_OVER,
+			       scaled_bilinear_scanline_sse2_8888_8_8888_OVER,
+			       uint32_t, uint8_t, uint32_t,
+			       NORMAL, FLAG_HAVE_NON_SOLID_MASK)
 
 static const pixman_fast_path_t sse2_fast_paths[] =
 {
@@ -5607,6 +5770,11 @@ static const pixman_fast_path_t sse2_fast_paths[] =
     SIMPLE_BILINEAR_FAST_PATH (OVER, a8r8g8b8, a8r8g8b8, sse2_8888_8888),
     SIMPLE_BILINEAR_FAST_PATH (OVER, a8b8g8r8, a8b8g8r8, sse2_8888_8888),
 
+    SIMPLE_BILINEAR_A8_MASK_FAST_PATH (OVER, a8r8g8b8, x8r8g8b8, sse2_8888_8_8888),
+    SIMPLE_BILINEAR_A8_MASK_FAST_PATH (OVER, a8b8g8r8, x8b8g8r8, sse2_8888_8_8888),
+    SIMPLE_BILINEAR_A8_MASK_FAST_PATH (OVER, a8r8g8b8, a8r8g8b8, sse2_8888_8_8888),
+    SIMPLE_BILINEAR_A8_MASK_FAST_PATH (OVER, a8b8g8r8, a8b8g8r8, sse2_8888_8_8888),
+
     { PIXMAN_OP_NONE },
 };
 
-- 
1.7.1