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Unattenutate with work around for vpgatherdd on avx2

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BUG=none
TEST=ARGBUnattenuate*
Review URL: https://webrtc-codereview.appspot.com/1183004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@599 16f28f9a-4ce2-e073-06de-1de4eb20be90
This commit is contained in:
fbarchard@google.com 2013-03-12 01:59:48 +00:00
parent 11a524362d
commit 805fefb9d8
4 changed files with 69 additions and 6 deletions
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2
README.chromium
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@ -1,6 +1,6 @@
Name: libyuv
URL: http://code.google.com/p/libyuv/
Version: 597
Version: 599
License: BSD
License File: LICENSE

2
include/libyuv/version.h
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@ -11,6 +11,6 @@
#ifndef INCLUDE_LIBYUV_VERSION_H_ // NOLINT
#define INCLUDE_LIBYUV_VERSION_H_
#define LIBYUV_VERSION 597
#define LIBYUV_VERSION 599
#endif // INCLUDE_LIBYUV_VERSION_H_ NOLINT

2
source/row_posix.cc
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@ -3636,8 +3636,6 @@ void ARGBUnattenuateRow_SSE2(const uint8* src_argb, uint8* dst_argb,
uintptr_t alpha = 0;
asm volatile (
"sub %0,%1 \n"
"pcmpeqb %%xmm4,%%xmm4 \n"
"pslld $0x18,%%xmm4 \n"
// 4 pixel loop.
".p2align 4 \n"

69
source/row_win.cc
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@ -4371,8 +4371,6 @@ void ARGBUnattenuateRow_SSE2(const uint8* src_argb, uint8* dst_argb,
mov edx, [esp + 8 + 8] // dst_argb
mov ecx, [esp + 8 + 12] // width
sub edx, eax
pcmpeqb xmm4, xmm4 // generate mask 0xff000000
pslld xmm4, 24
align 16
convertloop:
@ -4416,6 +4414,9 @@ static const ulvec8 kUnattenShuffleAlpha_AVX2 = {
0u, 1u, 0u, 1u, 0u, 1u, 6u, 7u, 8u, 9u, 8u, 9u, 8u, 9u, 14u, 15,
0u, 1u, 0u, 1u, 0u, 1u, 6u, 7u, 8u, 9u, 8u, 9u, 8u, 9u, 14u, 15,
};
// TODO(fbarchard): Enable USE_GATHER for future hardware if faster.
// USE_GATHER is not on by default, due to being a slow instruction.
#ifdef USE_GATHER
__declspec(naked) __declspec(align(16))
void ARGBUnattenuateRow_AVX2(const uint8* src_argb, uint8* dst_argb,
int width) {
@ -4449,6 +4450,70 @@ void ARGBUnattenuateRow_AVX2(const uint8* src_argb, uint8* dst_argb,
ret
}
}
#else // USE_GATHER
__declspec(naked) __declspec(align(16))
void ARGBUnattenuateRow_AVX2(const uint8* src_argb, uint8* dst_argb,
int width) {
__asm {
mov eax, [esp + 4] // src_argb0
mov edx, [esp + 8] // dst_argb
mov ecx, [esp + 12] // width
sub edx, eax
vmovdqa ymm5, kUnattenShuffleAlpha_AVX2
push esi
push edi
align 16
convertloop:
// replace VPGATHER
movzx esi, byte ptr [eax + 3] // alpha0
movzx edi, byte ptr [eax + 7] // alpha1
vmovd xmm0, dword ptr fixed_invtbl8[esi * 4] // [1,a0]
vmovd xmm1, dword ptr fixed_invtbl8[edi * 4] // [1,a1]
movzx esi, byte ptr [eax + 11] // alpha2
movzx edi, byte ptr [eax + 15] // alpha3
vpunpckldq xmm6, xmm0, xmm1 // [1,a1,1,a0]
vmovd xmm2, dword ptr fixed_invtbl8[esi * 4] // [1,a2]
vmovd xmm3, dword ptr fixed_invtbl8[edi * 4] // [1,a3]
movzx esi, byte ptr [eax + 19] // alpha4
movzx edi, byte ptr [eax + 23] // alpha5
vpunpckldq xmm7, xmm2, xmm3 // [1,a3,1,a2]
vmovd xmm0, dword ptr fixed_invtbl8[esi * 4] // [1,a4]
vmovd xmm1, dword ptr fixed_invtbl8[edi * 4] // [1,a5]
movzx esi, byte ptr [eax + 27] // alpha6
movzx edi, byte ptr [eax + 31] // alpha7
vpunpckldq xmm0, xmm0, xmm1 // [1,a5,1,a4]
vmovd xmm2, dword ptr fixed_invtbl8[esi * 4] // [1,a6]
vmovd xmm3, dword ptr fixed_invtbl8[edi * 4] // [1,a7]
vpunpckldq xmm2, xmm2, xmm3 // [1,a7,1,a6]
vpunpcklqdq xmm3, xmm6, xmm7 // [1,a3,1,a2,1,a1,1,a0]
vpunpcklqdq xmm0, xmm0, xmm2 // [1,a7,1,a6,1,a5,1,a4]
vinserti128 ymm3, ymm3, xmm0, 1 // [1,a7,1,a6,1,a5,1,a4,1,a3,1,a2,1,a1,1,a0]
// end of VPGATHER
vmovdqu ymm6, [eax] // read 8 pixels.
vpunpcklbw ymm0, ymm6, ymm6 // low 4 pixels. mutated.
vpunpckhbw ymm1, ymm6, ymm6 // high 4 pixels. mutated.
vpunpcklwd ymm2, ymm3, ymm3 // low 4 inverted alphas. mutated. 1, 1, a, a
vpunpckhwd ymm3, ymm3, ymm3 // high 4 inverted alphas. mutated.
vpshufb ymm2, ymm2, ymm5 // replicate low 4 alphas. 1, a, a, a
vpshufb ymm3, ymm3, ymm5 // replicate high 4 alphas
vpmulhuw ymm0, ymm0, ymm2 // rgb * ia
vpmulhuw ymm1, ymm1, ymm3 // rgb * ia
vpackuswb ymm0, ymm0, ymm1 // unmutated.
sub ecx, 8
vmovdqu [eax + edx], ymm0
lea eax, [eax + 32]
jg convertloop
pop edi
pop esi
ret
}
}
#endif // USE_GATHER
#endif // HAS_ARGBATTENUATEROW_AVX2
#ifdef HAS_ARGBGRAYROW_SSSE3