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Add Load2/store2 to Sk4x (dumb impl for now)

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patch from issue 1001003002 at patchset 1 (http://crrev.com/1001003002#ps1)

BUG=skia:

Review URL: https://codereview.chromium.org/1001453006
This commit is contained in:
reed 2015-03-18 12:56:46 -07:00 committed by Commit bot
parent 24e06d5244
commit 422677ceab
2 changed files with 21 additions and 0 deletions
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12
src/core/Sk4x.h
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@ -37,6 +37,18 @@ public:
void store (T[4]) const;
void storeAligned(T[4]) const;
// Experimental!
static Sk4x Load2(const T src[2]) {
const T padded[4] = { src[0], src[1], 0, 0 };
return Load(padded);
}
void store2(T dst[2]) const {
T padded[4];
this->store(padded);
dst[0] = padded[0];
dst[1] = padded[1];
}
template <typename Dst> Dst reinterpret() const;
template <typename Dst> Dst cast() const;

9
tests/Sk4xTest.cpp
View File

@ -42,6 +42,15 @@ DEF_TEST(Sk4x_LoadStore, r) {
fs[2] == 6 &&
fs[3] == 7 &&
fs[4] == 8);
// Load2 and store2().
float two[2] = { 1.0f, 2.0f };
Sk4f twoIn4f = Sk4f::Load2(two);
twoIn4f = twoIn4f.multiply(Sk4f(2.0f));
twoIn4f.store2(two);
REPORTER_ASSERT(r, two[0] == 2.0f);
REPORTER_ASSERT(r, two[1] == 4.0f);
}
DEF_TEST(Sk4x_Conversions, r) {