[Pixman] [PATCH] sse2: add src_x888_0565
Matt Turner
mattst88 at gmail.com
Thu Jun 14 06:36:40 PDT 2012
Port of 2ddd1c498b to SSE2.
Uses the pmadd technique described in
http://software.intel.com/sites/landingpage/legacy/mmx/MMX_App_24-16_Bit_Conversion.pdf
Works around lack of packusdw instruction by first sign extending the
values.
fast: src_8888_0565 = L1: 681.40 L2: 689.20 M: 644.76 ( 25.51%) HT:404.42 VT:288.04 R:306.07 RT:150.80 (1619Kops/s)
mmx: src_8888_0565 = L1:2056.03 L2:1985.44 M:1574.91 ( 61.87%) HT:533.10 VT:376.35 R:416.10 RT:178.79 (1833Kops/s)
sse2: src_8888_0565 = L1:3793.42 L2:3653.44 M:1878.83 ( 73.94%) HT:535.03 VT:407.96 R:421.46 RT:163.31 (1727Kops/s)
and for reference, using packusdw
sse4: src_8888_0565 = L1:4396.18 L2:4229.25 M:1904.04 ( 75.18%) HT:559.79 VT:427.96 R:440.06 RT:165.71 (1744Kops/s)
Notice that MMX is faster in the RT case because it can operate on
8-bytes instead of needing 16-bytes for SSE2.
---
pixman/pixman-sse2.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 83 insertions(+), 0 deletions(-)
diff --git a/pixman/pixman-sse2.c b/pixman/pixman-sse2.c
index 7af06db..0604254 100644
--- a/pixman/pixman-sse2.c
+++ b/pixman/pixman-sse2.c
@@ -53,6 +53,9 @@ static __m128i mask_blue;
static __m128i mask_565_fix_rb;
static __m128i mask_565_fix_g;
+static __m128i mask_565_rb;
+static __m128i mask_565_pack_multiplier;
+
static force_inline __m128i
unpack_32_1x128 (uint32_t data)
{
@@ -121,6 +124,29 @@ pack_2x128_128 (__m128i lo, __m128i hi)
}
static force_inline __m128i
+pack_565_2packedx128_128 (__m128i lo, __m128i hi)
+{
+ __m128i rb0 = _mm_and_si128 (lo, mask_565_rb);
+ __m128i rb1 = _mm_and_si128 (hi, mask_565_rb);
+
+ __m128i t0 = _mm_madd_epi16 (rb0, mask_565_pack_multiplier);
+ __m128i t1 = _mm_madd_epi16 (rb1, mask_565_pack_multiplier);
+
+ __m128i g0 = _mm_and_si128 (lo, mask_green);
+ __m128i g1 = _mm_and_si128 (hi, mask_green);
+
+ t0 = _mm_or_si128 (t0, g0);
+ t1 = _mm_or_si128 (t1, g1);
+
+ /* Simulates _mm_packus_epi32 */
+ t0 = _mm_slli_epi32 (t0, 16 - 5);
+ t1 = _mm_slli_epi32 (t1, 16 - 5);
+ t0 = _mm_srai_epi32 (t0, 16);
+ t1 = _mm_srai_epi32 (t1, 16);
+ return _mm_packs_epi32 (t0, t1);
+}
+
+__m128i
pack_565_2x128_128 (__m128i lo, __m128i hi)
{
__m128i data;
@@ -2832,6 +2858,57 @@ sse2_composite_over_8888_n_8888 (pixman_implementation_t *imp,
}
static void
+sse2_composite_src_x888_0565 (pixman_implementation_t *imp,
+ pixman_composite_info_t *info)
+{
+ PIXMAN_COMPOSITE_ARGS (info);
+ uint16_t *dst_line, *dst;
+ uint32_t *src_line, *src, s;
+ int dst_stride, src_stride;
+ int32_t w;
+
+ PIXMAN_IMAGE_GET_LINE (src_image, src_x, src_y, uint32_t, src_stride, src_line, 1);
+ PIXMAN_IMAGE_GET_LINE (dest_image, dest_x, dest_y, uint16_t, dst_stride, dst_line, 1);
+
+ while (height--)
+ {
+ dst = dst_line;
+ dst_line += dst_stride;
+ src = src_line;
+ src_line += src_stride;
+ w = width;
+
+ while (w && (unsigned long)dst & 15)
+ {
+ s = *src++;
+ *dst = CONVERT_8888_TO_0565 (s);
+ dst++;
+ w--;
+ }
+
+ while (w >= 8)
+ {
+ __m128i xmm_src0 = load_128_unaligned ((__m128i *)src + 0);
+ __m128i xmm_src1 = load_128_unaligned ((__m128i *)src + 1);
+
+ save_128_aligned ((__m128i*)dst, pack_565_2packedx128_128 (xmm_src0, xmm_src1));
+
+ w -= 8;
+ src += 8;
+ dst += 8;
+ }
+
+ while (w)
+ {
+ s = *src++;
+ *dst = CONVERT_8888_TO_0565 (s);
+ dst++;
+ w--;
+ }
+ }
+}
+
+static void
sse2_composite_src_x888_8888 (pixman_implementation_t *imp,
pixman_composite_info_t *info)
{
@@ -5728,6 +5805,10 @@ static const pixman_fast_path_t sse2_fast_paths[] =
PIXMAN_STD_FAST_PATH (SRC, solid, a8, x8r8g8b8, sse2_composite_src_n_8_8888),
PIXMAN_STD_FAST_PATH (SRC, solid, a8, a8b8g8r8, sse2_composite_src_n_8_8888),
PIXMAN_STD_FAST_PATH (SRC, solid, a8, x8b8g8r8, sse2_composite_src_n_8_8888),
+ PIXMAN_STD_FAST_PATH (SRC, a8r8g8b8, null, r5g6b5, sse2_composite_src_x888_0565),
+ PIXMAN_STD_FAST_PATH (SRC, a8b8g8r8, null, b5g6r5, sse2_composite_src_x888_0565),
+ PIXMAN_STD_FAST_PATH (SRC, x8r8g8b8, null, r5g6b5, sse2_composite_src_x888_0565),
+ PIXMAN_STD_FAST_PATH (SRC, x8b8g8r8, null, b5g6r5, sse2_composite_src_x888_0565),
PIXMAN_STD_FAST_PATH (SRC, x8r8g8b8, null, a8r8g8b8, sse2_composite_src_x888_8888),
PIXMAN_STD_FAST_PATH (SRC, x8b8g8r8, null, a8b8g8r8, sse2_composite_src_x888_8888),
PIXMAN_STD_FAST_PATH (SRC, a8r8g8b8, null, a8r8g8b8, sse2_composite_copy_area),
@@ -6030,6 +6111,8 @@ _pixman_implementation_create_sse2 (pixman_implementation_t *fallback)
mask_ffff = create_mask_16_128 (0xffff);
mask_ff000000 = create_mask_2x32_128 (0xff000000, 0xff000000);
mask_alpha = create_mask_2x32_128 (0x00ff0000, 0x00000000);
+ mask_565_rb = create_mask_2x32_128 (0x00f800f8, 0x00f800f8);
+ mask_565_pack_multiplier = create_mask_2x32_128 (0x20000004, 0x20000004);
/* Set up function pointers */
imp->combine_32[PIXMAN_OP_OVER] = sse2_combine_over_u;
--
1.7.3.4
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