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fast sk4f <-> sk4i SSE methods

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BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1707673002
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot

Review URL: https://codereview.chromium.org/1707673002
This commit is contained in:
mtklein 2016-02-17 07:23:36 -08:00 committed by Commit bot
parent d96e7e503f
commit 0cf795fd11
2 changed files with 23 additions and 0 deletions
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7
src/opts/SkNx_sse.h
View File

@ -294,6 +294,13 @@ public:
__m128i fVec;
};
template<> /*static*/ inline Sk4f SkNx_cast<float, int>(const Sk4i& src) {
return _mm_cvtepi32_ps(src.fVec);
}
template <> /*static*/ inline Sk4i SkNx_cast<int, float>(const Sk4f& src) {
return _mm_cvttps_epi32(src.fVec);
}
template<> /*static*/ inline Sk4h SkNx_cast<uint16_t, float>(const Sk4f& src) {
auto _32 = _mm_cvttps_epi32(src.fVec);

16
tests/SkNxTest.cpp
View File

@ -237,6 +237,22 @@ DEF_TEST(SkNx_shuffle, r) {
REPORTER_ASSERT(r, f4[3] == 20);
}
DEF_TEST(SkNx_int_float, r) {
Sk4f f(-2.3f, 1.0f, 0.45f, 0.6f);
Sk4i i = SkNx_cast<int>(f);
REPORTER_ASSERT(r, i[0] == -2);
REPORTER_ASSERT(r, i[1] == 1);
REPORTER_ASSERT(r, i[2] == 0);
REPORTER_ASSERT(r, i[3] == 0);
f = SkNx_cast<float>(i);
REPORTER_ASSERT(r, f[0] == -2.0f);
REPORTER_ASSERT(r, f[1] == 1.0f);
REPORTER_ASSERT(r, f[2] == 0.0f);
REPORTER_ASSERT(r, f[3] == 0.0f);
}
#include "SkRandom.h"
DEF_TEST(SkNx_u16_float, r) {