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From c3f1715c4698e90396d02f7b5acc314d99780941 Mon Sep 17 00:00:00 2001
From: Siarhei Siamashka <siarhei.siamashka@nokia.com>
Date: Thu, 23 Sep 2010 22:28:55 +0300
Subject: [PATCH 7/9] ARM: added 'neon_composite_add_0565_8_0565' fast path
TODO: That's an initial variant, needs performance tuning
---
pixman/pixman-arm-neon-asm.S | 52 ++++++++++++++++++++++++++++++++++++++++++
pixman/pixman-arm-neon.c | 4 +++
2 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/pixman/pixman-arm-neon-asm.S b/pixman/pixman-arm-neon-asm.S
index e1a697e..23ddae9 100644
--- a/pixman/pixman-arm-neon-asm.S
+++ b/pixman/pixman-arm-neon-asm.S
@@ -1890,3 +1890,55 @@ generate_composite_function \
10, /* dst_r_basereg */ \
8, /* src_basereg */ \
15 /* mask_basereg */
+
+/******************************************************************************/
+
+.macro pixman_composite_add_0565_8_0565_process_pixblock_head
+ /* mask is in d15 */
+ convert_0565_to_x888 q4, d2, d1, d0
+ convert_0565_to_x888 q5, d6, d5, d4
+ /* source pixel data is in {d0, d1, d2, XX} */
+ /* destination pixel data is in {d4, d5, d6, XX} */
+ vmull.u8 q6, d15, d2
+ vmull.u8 q5, d15, d1
+ vmull.u8 q4, d15, d0
+ vrshr.u16 q12, q6, #8
+ vrshr.u16 q11, q5, #8
+ vrshr.u16 q10, q4, #8
+ vraddhn.u16 d2, q6, q12
+ vraddhn.u16 d1, q5, q11
+ vraddhn.u16 d0, q4, q10
+.endm
+
+.macro pixman_composite_add_0565_8_0565_process_pixblock_tail
+ vqadd.u8 q0, q0, q2
+ vqadd.u8 q1, q1, q3
+ /* 32bpp result is in {d0, d1, d2, XX} */
+ convert_8888_to_0565 d2, d1, d0, q14, q15, q3
+.endm
+
+/* TODO: expand macros and do better instructions scheduling */
+.macro pixman_composite_add_0565_8_0565_process_pixblock_tail_head
+ vld1.8 {d15}, [MASK]!
+ pixman_composite_add_0565_8_0565_process_pixblock_tail
+ vld1.16 {d8, d9}, [SRC]!
+ vld1.16 {d10, d11}, [DST_R, :128]!
+ cache_preload 8, 8
+ pixman_composite_add_0565_8_0565_process_pixblock_head
+ vst1.16 {d28, d29}, [DST_W, :128]!
+.endm
+
+generate_composite_function \
+ pixman_composite_add_0565_8_0565_asm_neon, 16, 8, 16, \
+ FLAG_DST_READWRITE, \
+ 8, /* number of pixels, processed in a single block */ \
+ 5, /* prefetch distance */ \
+ default_init_need_all_regs, \
+ default_cleanup_need_all_regs, \
+ pixman_composite_add_0565_8_0565_process_pixblock_head, \
+ pixman_composite_add_0565_8_0565_process_pixblock_tail, \
+ pixman_composite_add_0565_8_0565_process_pixblock_tail_head, \
+ 28, /* dst_w_basereg */ \
+ 10, /* dst_r_basereg */ \
+ 8, /* src_basereg */ \
+ 15 /* mask_basereg */
diff --git a/pixman/pixman-arm-neon.c b/pixman/pixman-arm-neon.c
index db1c2df..a8be7e4 100644
--- a/pixman/pixman-arm-neon.c
+++ b/pixman/pixman-arm-neon.c
@@ -82,6 +82,8 @@ PIXMAN_ARM_BIND_FAST_PATH_SRC_N_DST (neon, over_8888_n_8888,
PIXMAN_ARM_BIND_FAST_PATH_SRC_MASK_DST (neon, add_8_8_8,
uint8_t, 1, uint8_t, 1, uint8_t, 1)
+PIXMAN_ARM_BIND_FAST_PATH_SRC_MASK_DST (neon, add_0565_8_0565,
+ uint16_t, 1, uint8_t, 1, uint16_t, 1)
PIXMAN_ARM_BIND_FAST_PATH_SRC_MASK_DST (neon, add_8888_8888_8888,
uint32_t, 1, uint32_t, 1, uint32_t, 1)
PIXMAN_ARM_BIND_FAST_PATH_SRC_MASK_DST (neon, over_8888_8_8888,
@@ -296,6 +298,8 @@ static const pixman_fast_path_t arm_neon_fast_paths[] =
PIXMAN_STD_FAST_PATH (OVER, x8b8g8r8, null, a8b8g8r8, neon_composite_src_x888_8888),
PIXMAN_STD_FAST_PATH (ADD, solid, a8, a8, neon_composite_add_n_8_8),
PIXMAN_STD_FAST_PATH (ADD, a8, a8, a8, neon_composite_add_8_8_8),
+ PIXMAN_STD_FAST_PATH (ADD, r5g6b5, a8, r5g6b5, neon_composite_add_0565_8_0565),
+ PIXMAN_STD_FAST_PATH (ADD, b5g6r5, a8, b5g6r5, neon_composite_add_0565_8_0565),
PIXMAN_STD_FAST_PATH (ADD, a8r8g8b8, a8r8g8b8, a8r8g8b8, neon_composite_add_8888_8888_8888),
PIXMAN_STD_FAST_PATH (ADD, a8, null, a8, neon_composite_add_8000_8000),
PIXMAN_STD_FAST_PATH (ADD, a8r8g8b8, null, a8r8g8b8, neon_composite_add_8888_8888),
--
1.6.6.1
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