diff options
| author | Ben Avison <bavison@riscosopen.org> | 2015-08-20 20:53:11 +0100 |
|---|---|---|
| committer | Ben Avison <bavison@riscosopen.org> | 2015-10-15 13:52:06 +0100 |
| commit | 35a8b723b6d7c92b00e7e27270311ff37111e1e9 (patch) | |
| tree | 134997d363a65297bc0ca4883b6f16e55eb77740 | |
| parent | 7d4db711b3a80b70bbda4fd2497e110ecd897b95 (diff) | |
armv7: Add optimised scanline writeback for r5g6b5
lowlevel-blt-bench results for an example operation, src_1555_0565:
Before After
Mean StdDev Mean StdDev Confidence Change
L1 85.8 2.12 114.0 1.65 100.00% +32.9%
L2 83.7 0.96 106.0 1.01 100.00% +26.7%
M 76.4 0.66 94.8 0.98 100.00% +24.0%
HT 39.8 0.37 38.9 0.29 100.00% -2.3%
VT 37.0 0.36 34.1 0.24 100.00% -7.7%
R 33.9 0.37 30.3 0.24 100.00% -10.5%
RT 14.7 0.20 11.5 0.11 100.00% -21.7%
| -rw-r--r-- | pixman/pixman-arm-neon-asm.S | 10 | ||||
| -rw-r--r-- | pixman/pixman-arm-neon.c | 10 |
2 files changed, 20 insertions, 0 deletions
diff --git a/pixman/pixman-arm-neon-asm.S b/pixman/pixman-arm-neon-asm.S index f48f773..46567cb 100644 --- a/pixman/pixman-arm-neon-asm.S +++ b/pixman/pixman-arm-neon-asm.S @@ -461,6 +461,16 @@ generate_composite_function \ pixman_composite_src_8888_0565_process_pixblock_tail, \ pixman_composite_src_8888_0565_process_pixblock_tail_head +generate_composite_function_single_scanline \ + pixman_write_back_r5g6b5_asm_neon, 32, 0, 16, \ + FLAG_DST_READWRITE | FLAG_DEINTERLEAVE_32BPP, \ + 8, /* number of pixels, processed in a single block */ \ + default_init, \ + default_cleanup, \ + pixman_composite_src_8888_0565_process_pixblock_head, \ + pixman_composite_src_8888_0565_process_pixblock_tail, \ + pixman_composite_src_8888_0565_process_pixblock_tail_head + /******************************************************************************/ .macro pixman_composite_src_0565_8888_process_pixblock_head diff --git a/pixman/pixman-arm-neon.c b/pixman/pixman-arm-neon.c index d4675f1..9f3faa4 100644 --- a/pixman/pixman-arm-neon.c +++ b/pixman/pixman-arm-neon.c @@ -168,6 +168,15 @@ PIXMAN_ARM_BIND_SCALED_BILINEAR_SRC_A8_DST (SKIP_ZERO_SRC, neon, 8888_8_8888, AD PIXMAN_ARM_BIND_GET_SCANLINE (neon, r5g6b5) PIXMAN_ARM_BIND_GET_SCANLINE (neon, a1r5g5b5) +PIXMAN_ARM_BIND_WRITE_BACK (neon, r5g6b5) + +static uint32_t * +fast_dest_fetch_noop (pixman_iter_t *iter, const uint32_t *mask) +{ + iter->bits += iter->stride; + return iter->buffer; +} + void pixman_composite_src_n_8_asm_neon (int32_t w, int32_t h, @@ -444,6 +453,7 @@ static const pixman_fast_path_t arm_neon_fast_paths[] = static const pixman_iter_info_t arm_neon_iters[] = { PIXMAN_ARM_UNTRANSFORMED_COVER_FETCHER (neon, r5g6b5), + PIXMAN_ARM_WRITEBACK (neon, r5g6b5), PIXMAN_ARM_UNTRANSFORMED_COVER_FETCHER (neon, a1r5g5b5), |