This path is being exercised by inplace compositing of trapezoids, for
instance as used in the firefox-asteroids cairo-trace.
core2 @ 2.66GHz,
reference memcpy speed = 4898.2MB/s (1224.6MP/s for 32bpp fills)
before: add_n_8888 = L1: 4.36 L2: 4.27 M: 1.61 ( 0.13%) HT:
1.65 VT: 1.63 R: 1.63 RT: 1.59 ( 21Kops/s)
after: add_n_8888 = L1:2969.09 L2:3926.11 M:603.30 ( 49.27%) HT:524.69
VT:401.01 R:407.59 RT:210.34 ( 804Kops/s)
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
pixman/pixman-sse2.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 63 insertions(+)
diff --git a/pixman/pixman-sse2.c b/pixman/pixman-sse2.c
index 665eead..73eee68 100644
--- a/pixman/pixman-sse2.c
+++ b/pixman/pixman-sse2.c
@@ -4519,9 +4519,70 @@ sse2_composite_add_8888_8888 (pixman_implementation_t
*imp,
sse2_combine_add_u (imp, op, dst, src, NULL, width);
}
+}
+
+static void
+sse2_composite_add_n_8888 (pixman_implementation_t *imp,
+ pixman_composite_info_t *info)
+{
+ PIXMAN_COMPOSITE_ARGS (info);
+ uint32_t *dst_line, *dst, src;
+ int dst_stride;
+
+ __m128i xmm_src;
+
+ PIXMAN_IMAGE_GET_LINE (dest_image, dest_x, dest_y, uint32_t, dst_stride,
dst_line, 1);
+
+ src = _pixman_image_get_solid (imp, src_image, dest_image->bits.format);
+ if (src == 0)
+ return;
+
+ if (src == ~0)
+ {
+ pixman_fill (dest_image->bits.bits, dest_image->bits.rowstride, 32,
+ dest_x, dest_y, width, height, ~0);
+
+ return;
+ }
+
+ xmm_src = _mm_set_epi32 (src, src, src, src);
+ while (height--)
+ {
+ int w = width;
+ uint32_t d;
+ dst = dst_line;
+ dst_line += dst_stride;
+
+ while (w && (unsigned long)dst & 15)
+ {
+ d = *dst;
+ *dst++ =
+ _mm_cvtsi128_si32 ( _mm_adds_epu8 (xmm_src, _mm_cvtsi32_si128
(d)));
+ w--;
+ }
+
+ while (w >= 4)
+ {
+ save_128_aligned
+ ((__m128i*)dst,
+ _mm_adds_epu8 (xmm_src, load_128_aligned ((__m128i*)dst)));
+
+ dst += 4;
+ w -= 4;
+ }
+
+ while (w--)
+ {
+ d = *dst;
+ *dst++ =
+ _mm_cvtsi128_si32 (_mm_adds_epu8 (xmm_src,
+ _mm_cvtsi32_si128 (d)));
+ }
+ }
}
+
static pixman_bool_t
pixman_blt_sse2 (uint32_t *src_bits,
uint32_t *dst_bits,
@@ -5814,6 +5875,8 @@ static const pixman_fast_path_t sse2_fast_paths[] =
PIXMAN_STD_FAST_PATH (ADD, a8b8g8r8, null, a8b8g8r8,
sse2_composite_add_8888_8888),
PIXMAN_STD_FAST_PATH (ADD, solid, a8, a8, sse2_composite_add_n_8_8),
PIXMAN_STD_FAST_PATH (ADD, solid, null, a8, sse2_composite_add_n_8),
+ PIXMAN_STD_FAST_PATH (ADD, solid, null, x8r8g8b8,
sse2_composite_add_n_8888),
+ PIXMAN_STD_FAST_PATH (ADD, solid, null, a8r8g8b8,
sse2_composite_add_n_8888),
/* PIXMAN_OP_SRC */
PIXMAN_STD_FAST_PATH (SRC, solid, a8, a8r8g8b8,
sse2_composite_src_n_8_8888),
--
1.7.10.4
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