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rsx: Use SSE to accelerate index buffer uploads

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kd-11 2019-06-17 15:20:21 +03:00 committed by kd-11
parent b645ebdb04
commit 358169507c
1 changed files with 136 additions and 5 deletions
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141
rpcs3/Emu/RSX/Common/BufferUtils.cpp
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@ -561,19 +561,150 @@ namespace
struct untouched_impl
{
static
std::tuple<u16, u16, u32> upload_u16_swapped(const void *src, void *dst, u32 count)
{
const __m128i mask = _mm_set_epi8(
0xE, 0xF, 0xC, 0xD,
0xA, 0xB, 0x8, 0x9,
0x6, 0x7, 0x4, 0x5,
0x2, 0x3, 0x0, 0x1);
auto src_stream = (const __m128i*)src;
auto dst_stream = (__m128i*)dst;
__m128i min = _mm_set1_epi16(0xFFFF);
__m128i max = _mm_set1_epi16(0);
const auto iterations = count / 8;
for (unsigned n = 0; n < iterations; ++n)
{
const __m128i raw = _mm_loadu_si128(src_stream++);
const __m128i value = _mm_shuffle_epi8(raw, mask);
max = _mm_max_epu16(max, value);
min = _mm_min_epu16(min, value);
_mm_storeu_si128(dst_stream++, value);
}
const __m128i mask_step1 = _mm_set_epi8(
0, 0, 0, 0, 0, 0, 0, 0,
0xF, 0xE, 0xD, 0xC, 0xB, 0xA, 0x9, 0x8);
const __m128i mask_step2 = _mm_set_epi8(
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0x7, 0x6, 0x5, 0x4);
const __m128i mask_step3 = _mm_set_epi8(
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0x3, 0x2);
__m128i tmp = _mm_shuffle_epi8(min, mask_step1);
min = _mm_min_epu16(min, tmp);
tmp = _mm_shuffle_epi8(min, mask_step2);
min = _mm_min_epu16(min, tmp);
tmp = _mm_shuffle_epi8(min, mask_step3);
min = _mm_min_epu16(min, tmp);
tmp = _mm_shuffle_epi8(max, mask_step1);
max = _mm_max_epu16(max, tmp);
tmp = _mm_shuffle_epi8(max, mask_step2);
max = _mm_max_epu16(max, tmp);
tmp = _mm_shuffle_epi8(max, mask_step3);
max = _mm_max_epu16(max, tmp);
const u16 min_index = u16(_mm_cvtsi128_si32(min) & 0xFFFF);
const u16 max_index = u16(_mm_cvtsi128_si32(max) & 0xFFFF);
return std::make_tuple(min_index, max_index, count);
}
static
std::tuple<u32, u32, u32> upload_u32_swapped(const void *src, void *dst, u32 count)
{
const __m128i mask = _mm_set_epi8(
0xC, 0xD, 0xE, 0xF,
0x8, 0x9, 0xA, 0xB,
0x4, 0x5, 0x6, 0x7,
0x0, 0x1, 0x2, 0x3);
auto src_stream = (const __m128i*)src;
auto dst_stream = (__m128i*)dst;
__m128i min = _mm_set1_epi32(~0u);
__m128i max = _mm_set1_epi32(0);
const auto iterations = count / 4;
for (unsigned n = 0; n < iterations; ++n)
{
const __m128i raw = _mm_loadu_si128(src_stream++);
const __m128i value = _mm_shuffle_epi8(raw, mask);
max = _mm_max_epu32(max, value);
min = _mm_min_epu32(min, value);
_mm_storeu_si128(dst_stream++, value);
}
// Aggregate min-max
const __m128i mask_step1 = _mm_set_epi8(
0, 0, 0, 0, 0, 0, 0, 0,
0xF, 0xE, 0xD, 0xC, 0xB, 0xA, 0x9, 0x8);
const __m128i mask_step2 = _mm_set_epi8(
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0x7, 0x6, 0x5, 0x4);
__m128i tmp = _mm_shuffle_epi8(min, mask_step1);
min = _mm_min_epu16(min, tmp);
tmp = _mm_shuffle_epi8(min, mask_step2);
min = _mm_min_epu16(min, tmp);
tmp = _mm_shuffle_epi8(max, mask_step1);
max = _mm_max_epu16(max, tmp);
tmp = _mm_shuffle_epi8(max, mask_step2);
max = _mm_max_epu16(max, tmp);
const u32 min_index = u32(_mm_cvtsi128_si32(min));
const u32 max_index = u32(_mm_cvtsi128_si32(max));
return std::make_tuple(min_index, max_index, count);
}
template<typename T>
static
std::tuple<T, T, u32> upload_untouched(gsl::span<to_be_t<const T>> src, gsl::span<T> dst)
{
T min_index = index_limit<T>(), max_index = 0;
u32 dst_index = 0;
T min_index, max_index;
u32 written;
u32 remaining = src.size();
for (const T index : src)
if (s_use_ssse3 && remaining >= 32)
{
dst[dst_index++] = min_max(min_index, max_index, index);
if constexpr (std::is_same<T, u32>::value)
{
const auto count = (remaining & ~0x3);
std::tie(min_index, max_index, written) = upload_u32_swapped(src.data(), dst.data(), count);
}
else if constexpr (std::is_same<T, u16>::value)
{
const auto count = (remaining & ~0x7);
std::tie(min_index, max_index, written) = upload_u16_swapped(src.data(), dst.data(), count);
}
remaining -= written;
}
else
{
min_index = index_limit<T>();
max_index = 0;
written = 0;
}
return std::make_tuple(min_index, max_index, dst_index);
while (remaining--)
{
T index = src[written];
dst[written++] = min_max(min_index, max_index, index);
}
return std::make_tuple(min_index, max_index, written);
}
};