diff options
Diffstat (limited to 'recipes/xorg-lib/pixman-0.21.6/0031-ARM-use-aligned-memory-writes-in-NEON-bilinear-scali.patch')
| -rw-r--r-- | recipes/xorg-lib/pixman-0.21.6/0031-ARM-use-aligned-memory-writes-in-NEON-bilinear-scali.patch | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/recipes/xorg-lib/pixman-0.21.6/0031-ARM-use-aligned-memory-writes-in-NEON-bilinear-scali.patch b/recipes/xorg-lib/pixman-0.21.6/0031-ARM-use-aligned-memory-writes-in-NEON-bilinear-scali.patch new file mode 100644 index 0000000000..3c8394b983 --- /dev/null +++ b/recipes/xorg-lib/pixman-0.21.6/0031-ARM-use-aligned-memory-writes-in-NEON-bilinear-scali.patch @@ -0,0 +1,124 @@ +From f36c189475951276766b2653ae9628c4d02dc0c9 Mon Sep 17 00:00:00 2001 +From: Siarhei Siamashka <siarhei.siamashka@nokia.com> +Date: Thu, 10 Mar 2011 16:12:23 +0200 +Subject: [PATCH 31/40] ARM: use aligned memory writes in NEON bilinear scaling code + +--- + pixman/pixman-arm-neon-asm.S | 49 ++++++++++++++++++++++++++++++------------ + 1 files changed, 35 insertions(+), 14 deletions(-) + +diff --git a/pixman/pixman-arm-neon-asm.S b/pixman/pixman-arm-neon-asm.S +index 8788e95..a4d6a9a 100644 +--- a/pixman/pixman-arm-neon-asm.S ++++ b/pixman/pixman-arm-neon-asm.S +@@ -2527,9 +2527,9 @@ fname: + + .macro bilinear_store_8888 numpix, tmp1, tmp2 + .if numpix == 4 +- vst1.32 {d0, d1}, [OUT]! ++ vst1.32 {d0, d1}, [OUT, :128]! + .elseif numpix == 2 +- vst1.32 {d0}, [OUT]! ++ vst1.32 {d0}, [OUT, :64]! + .elseif numpix == 1 + vst1.32 {d0[0]}, [OUT, :32]! + .else +@@ -2544,11 +2544,11 @@ fname: + vuzp.u8 d0, d2 + convert_8888_to_0565 d2, d1, d0, q1, tmp1, tmp2 + .if numpix == 4 +- vst1.16 {d2}, [OUT]! ++ vst1.16 {d2}, [OUT, :64]! + .elseif numpix == 2 +- vst1.32 {d2[0]}, [OUT]! ++ vst1.32 {d2[0]}, [OUT, :32]! + .elseif numpix == 1 +- vst1.16 {d2[0]}, [OUT]! ++ vst1.16 {d2[0]}, [OUT, :16]! + .else + .error bilinear_store_0565 numpix is unsupported + .endif +@@ -2622,8 +2622,7 @@ fname: + * Main template macro for generating NEON optimized bilinear scanline + * functions. + * +- * TODO: use software pipelining and aligned writes to the destination buffer +- * in order to improve performance ++ * TODO: use software pipelining in order to improve performance + * + * Bilinear scanline scaler macro template uses the following arguments: + * fname - name of the function to generate +@@ -2635,7 +2634,8 @@ fname: + */ + + .macro generate_bilinear_scanline_func fname, src_fmt, dst_fmt, \ +- bpp_shift, prefetch_distance ++ src_bpp_shift, dst_bpp_shift, \ ++ prefetch_distance + + pixman_asm_function fname + OUT .req r0 +@@ -2666,19 +2666,40 @@ pixman_asm_function fname + vdup.u8 d28, WT + vdup.u8 d29, WB + vadd.u16 d25, d25, d26 +- vadd.u16 q13, q13, q13 + ++ /* ensure good destination alignment */ ++ cmp WIDTH, #1 ++ blt 0f ++ tst OUT, #(1 << dst_bpp_shift) ++ beq 0f ++ vshr.u16 q15, q12, #8 ++ vadd.u16 q12, q12, q13 ++ bilinear_interpolate_last_pixel src_fmt, dst_fmt ++ sub WIDTH, WIDTH, #1 ++0: ++ vadd.u16 q13, q13, q13 + vshr.u16 q15, q12, #8 + vadd.u16 q12, q12, q13 + ++ cmp WIDTH, #2 ++ blt 0f ++ tst OUT, #(1 << (dst_bpp_shift + 1)) ++ beq 0f ++ bilinear_interpolate_two_pixels src_fmt, dst_fmt ++ sub WIDTH, WIDTH, #2 ++0: ++ ++ /* start the main loop */ + subs WIDTH, WIDTH, #4 + blt 1f +- mov PF_OFFS, PF_OFFS, asr #(16 - bpp_shift) ++ mov PF_OFFS, PF_OFFS, asr #(16 - src_bpp_shift) + 0: + bilinear_interpolate_four_pixels src_fmt, dst_fmt + subs WIDTH, WIDTH, #4 + bge 0b + 1: ++ ++ /* handle the remaining trailing pixels */ + tst WIDTH, #2 + beq 2f + bilinear_interpolate_two_pixels src_fmt, dst_fmt +@@ -2708,13 +2729,13 @@ pixman_asm_function fname + .endm + + generate_bilinear_scanline_func \ +- pixman_scaled_bilinear_scanline_8888_8888_SRC_asm_neon, 8888, 8888, 2, 28 ++ pixman_scaled_bilinear_scanline_8888_8888_SRC_asm_neon, 8888, 8888, 2, 2, 28 + + generate_bilinear_scanline_func \ +- pixman_scaled_bilinear_scanline_8888_0565_SRC_asm_neon, 8888, 0565, 2, 28 ++ pixman_scaled_bilinear_scanline_8888_0565_SRC_asm_neon, 8888, 0565, 2, 1, 28 + + generate_bilinear_scanline_func \ +- pixman_scaled_bilinear_scanline_0565_x888_SRC_asm_neon, 0565, 8888, 1, 28 ++ pixman_scaled_bilinear_scanline_0565_x888_SRC_asm_neon, 0565, 8888, 1, 2, 28 + + generate_bilinear_scanline_func \ +- pixman_scaled_bilinear_scanline_0565_0565_SRC_asm_neon, 0565, 0565, 1, 28 ++ pixman_scaled_bilinear_scanline_0565_0565_SRC_asm_neon, 0565, 0565, 1, 1, 28 +-- +1.6.6.1 + |