Hi,
attached patch do some optimization of blending then source alpha is 0.
--
Maksym Veremeyenko
From 1c65a7f50f247af3682fbb781e220b35b161a966 Mon Sep 17 00:00:00 2001
From: Maksym Veremeyenko <ve...@m1.tv>
Date: Thu, 4 Feb 2016 20:13:47 +0200
Subject: [PATCH] do not any blending/compositing for case #2 if source alpha
is 0
---
src/modules/core/composite_line_yuv_sse2_simple.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/src/modules/core/composite_line_yuv_sse2_simple.c
b/src/modules/core/composite_line_yuv_sse2_simple.c
index a68a788..2685d04 100644
--- a/src/modules/core/composite_line_yuv_sse2_simple.c
+++ b/src/modules/core/composite_line_yuv_sse2_simple.c
@@ -155,7 +155,10 @@ static void blend_case2(uint8_t *dest, uint8_t *src, int
width, uint8_t *src_a)
LOAD_CONSTS
"loop_start2: \n\t"
LOAD_SRC_A
+ "ptest %%xmm0,%%xmm0 \n\t"
+ "jz skip_calc2 \n\t"
DST_PIX_CALC
+ "skip_calc2: \n\t"
"add $0x08, %[src_a] \n\t"
PIX_POINTER_INC
"jnz loop_start2 \n\t"
--
1.7.7.6
------------------------------------------------------------------------------
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