142 lines
4.7 KiB
C++
142 lines
4.7 KiB
C++
#include "Test.h"
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#include "Sk4x.h"
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#define ASSERT_EQ(a, b) REPORTER_ASSERT(r, a.equal(b).allTrue())
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#define ASSERT_NE(a, b) REPORTER_ASSERT(r, a.notEqual(b).allTrue())
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DEF_TEST(Sk4x_Construction, r) {
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Sk4f uninitialized;
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Sk4f zero(0,0,0,0);
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Sk4f foo(1,2,3,4),
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bar(foo),
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baz = bar;
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ASSERT_EQ(foo, bar);
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ASSERT_EQ(bar, baz);
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ASSERT_EQ(baz, foo);
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}
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struct AlignedFloats {
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Sk4f forces16ByteAlignment; // On 64-bit machines, the stack starts 128-bit aligned,
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float fs[5]; // but not necessarily so on 32-bit. Adding an Sk4f forces it.
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};
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DEF_TEST(Sk4x_LoadStore, r) {
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AlignedFloats aligned;
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// fs will be 16-byte aligned, fs+1 not.
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float* fs = aligned.fs;
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for (int i = 0; i < 5; i++) { // set to 5,6,7,8,9
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fs[i] = float(i+5);
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}
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Sk4f foo = Sk4f::Load(fs);
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Sk4f bar = Sk4f::LoadAligned(fs);
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ASSERT_EQ(foo, bar);
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foo = Sk4f::Load(fs+1);
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ASSERT_NE(foo, bar);
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foo.storeAligned(fs);
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bar.store(fs+1);
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REPORTER_ASSERT(r, fs[0] == 6 &&
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fs[1] == 5 &&
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fs[2] == 6 &&
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fs[3] == 7 &&
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fs[4] == 8);
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}
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DEF_TEST(Sk4x_Conversions, r) {
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// Assuming IEEE floats.
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Sk4f zerof(0,0,0,0);
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Sk4i zeroi(0,0,0,0);
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ASSERT_EQ(zeroi, zerof.cast<Sk4i>());
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ASSERT_EQ(zeroi, zerof.reinterpret<Sk4i>());
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ASSERT_EQ(zerof, zeroi.cast<Sk4f>());
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ASSERT_EQ(zerof, zeroi.reinterpret<Sk4f>());
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Sk4f twof(2,2,2,2);
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Sk4i twoi(2,2,2,2);
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ASSERT_EQ(twoi, twof.cast<Sk4i>());
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ASSERT_NE(twoi, twof.reinterpret<Sk4i>());
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ASSERT_EQ(twof, twoi.cast<Sk4f>());
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ASSERT_NE(twof, twoi.reinterpret<Sk4f>());
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}
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DEF_TEST(Sk4x_Bits, r) {
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ASSERT_EQ(Sk4i(0,0,0,0).bitNot(), Sk4i(-1,-1,-1,-1));
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Sk4i a(2,3,4,5),
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b(1,3,5,7);
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ASSERT_EQ(Sk4i(0,3,4,5), a & b);
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ASSERT_EQ(Sk4i(3,3,5,7), a | b);
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}
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DEF_TEST(Sk4x_Arith, r) {
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ASSERT_EQ(Sk4f(4,6,8,10), Sk4f(1,2,3,4) + Sk4f(3,4,5,6));
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ASSERT_EQ(Sk4f(-2,-2,-2,-2), Sk4f(1,2,3,4) - Sk4f(3,4,5,6));
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ASSERT_EQ(Sk4f(3,8,15,24), Sk4f(1,2,3,4) * Sk4f(3,4,5,6));
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ASSERT_EQ(Sk4f(-1,-2,-3,-4), -Sk4f(1,2,3,4));
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float third = 1.0f/3.0f;
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ASSERT_EQ(Sk4f(1*third, 0.5f, 0.6f, 2*third), Sk4f(1,2,3,4) / Sk4f(3,4,5,6));
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ASSERT_EQ(Sk4i(4,6,8,10), Sk4i(1,2,3,4) + Sk4i(3,4,5,6));
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ASSERT_EQ(Sk4i(-2,-2,-2,-2), Sk4i(1,2,3,4) - Sk4i(3,4,5,6));
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ASSERT_EQ(Sk4i(3,8,15,24), Sk4i(1,2,3,4) * Sk4i(3,4,5,6));
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}
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DEF_TEST(Sk4x_ExplicitPromotion, r) {
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ASSERT_EQ(Sk4f(2,4,6,8), Sk4f(1,2,3,4) * Sk4f(2.0f));
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}
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DEF_TEST(Sk4x_Sqrt, r) {
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Sk4f squares(4, 16, 25, 121),
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roots(2, 4, 5, 11);
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// .sqrt() should be pretty precise.
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Sk4f error = roots.subtract(squares.sqrt());
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REPORTER_ASSERT(r, (error > Sk4f(-0.000001f)).allTrue());
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REPORTER_ASSERT(r, (error < Sk4f(+0.000001f)).allTrue());
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// .rsqrt() isn't so precise (for SSE), but should be pretty close.
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error = roots.subtract(squares.multiply(squares.rsqrt()));
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REPORTER_ASSERT(r, (error > Sk4f(-0.01f)).allTrue());
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REPORTER_ASSERT(r, (error < Sk4f(+0.01f)).allTrue());
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}
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DEF_TEST(Sk4x_Comparison, r) {
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ASSERT_EQ(Sk4f(1,2,3,4), Sk4f(1,2,3,4));
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ASSERT_NE(Sk4f(4,3,2,1), Sk4f(1,2,3,4));
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ASSERT_EQ(Sk4i(-1,-1,0,-1), Sk4f(1,2,5,4) == Sk4f(1,2,3,4));
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ASSERT_EQ(Sk4i(-1,-1,-1,-1), Sk4f(1,2,3,4) < Sk4f(2,3,4,5));
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ASSERT_EQ(Sk4i(-1,-1,-1,-1), Sk4f(1,2,3,4) <= Sk4f(2,3,4,5));
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ASSERT_EQ(Sk4i(0,0,0,0), Sk4f(1,2,3,4) > Sk4f(2,3,4,5));
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ASSERT_EQ(Sk4i(0,0,0,0), Sk4f(1,2,3,4) >= Sk4f(2,3,4,5));
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ASSERT_EQ(Sk4i(1,2,3,4), Sk4i(1,2,3,4));
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ASSERT_NE(Sk4i(4,3,2,1), Sk4i(1,2,3,4));
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ASSERT_EQ(Sk4i(-1,-1,0,-1), Sk4i(1,2,5,4) == Sk4i(1,2,3,4));
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ASSERT_EQ(Sk4i(-1,-1,-1,-1), Sk4i(1,2,3,4) < Sk4i(2,3,4,5));
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ASSERT_EQ(Sk4i(-1,-1,-1,-1), Sk4i(1,2,3,4) <= Sk4i(2,3,4,5));
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ASSERT_EQ(Sk4i(0,0,0,0), Sk4i(1,2,3,4) > Sk4i(2,3,4,5));
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ASSERT_EQ(Sk4i(0,0,0,0), Sk4i(1,2,3,4) >= Sk4i(2,3,4,5));
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}
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DEF_TEST(Sk4x_MinMax, r) {
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ASSERT_EQ(Sk4f(1,2,2,1), Sk4f::Min(Sk4f(1,2,3,4), Sk4f(4,3,2,1)));
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ASSERT_EQ(Sk4f(4,3,3,4), Sk4f::Max(Sk4f(1,2,3,4), Sk4f(4,3,2,1)));
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ASSERT_EQ(Sk4i(1,2,2,1), Sk4i::Min(Sk4i(1,2,3,4), Sk4i(4,3,2,1)));
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ASSERT_EQ(Sk4i(4,3,3,4), Sk4i::Max(Sk4i(1,2,3,4), Sk4i(4,3,2,1)));
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}
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DEF_TEST(Sk4x_Swizzle, r) {
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ASSERT_EQ(Sk4f(3,4,1,2), Sk4f(1,2,3,4).zwxy());
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ASSERT_EQ(Sk4f(1,2,5,6), Sk4f::XYAB(Sk4f(1,2,3,4), Sk4f(5,6,7,8)));
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ASSERT_EQ(Sk4f(3,4,7,8), Sk4f::ZWCD(Sk4f(1,2,3,4), Sk4f(5,6,7,8)));
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ASSERT_EQ(Sk4i(3,4,1,2), Sk4i(1,2,3,4).zwxy());
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ASSERT_EQ(Sk4i(1,2,5,6), Sk4i::XYAB(Sk4i(1,2,3,4), Sk4i(5,6,7,8)));
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ASSERT_EQ(Sk4i(3,4,7,8), Sk4i::ZWCD(Sk4i(1,2,3,4), Sk4i(5,6,7,8)));
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}
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