| /* |
| * Copyright 2020 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/utils/SkRandom.h" |
| #include "src/core/SkGeometry.h" |
| #include "src/gpu/ganesh/GrVx.h" |
| #include "tests/Test.h" |
| #include <limits> |
| #include <numeric> |
| |
| using namespace grvx; |
| using skvx::bit_pun; |
| |
| DEF_TEST(grvx_cross_dot, r) { |
| REPORTER_ASSERT(r, grvx::cross({0,1}, {0,1}) == 0); |
| REPORTER_ASSERT(r, grvx::cross({1,0}, {1,0}) == 0); |
| REPORTER_ASSERT(r, grvx::cross({1,1}, {1,1}) == 0); |
| REPORTER_ASSERT(r, grvx::cross({1,1}, {1,-1}) == -2); |
| REPORTER_ASSERT(r, grvx::cross({1,1}, {-1,1}) == 2); |
| |
| REPORTER_ASSERT(r, grvx::dot({0,1}, {1,0}) == 0); |
| REPORTER_ASSERT(r, grvx::dot({1,0}, {0,1}) == 0); |
| REPORTER_ASSERT(r, grvx::dot({1,1}, {1,-1}) == 0); |
| REPORTER_ASSERT(r, grvx::dot({1,1}, {1,1}) == 2); |
| REPORTER_ASSERT(r, grvx::dot({1,1}, {-1,-1}) == -2); |
| |
| SkRandom rand; |
| for (int i = 0; i < 100; ++i) { |
| float a=rand.nextRangeF(-1,1), b=rand.nextRangeF(-1,1), c=rand.nextRangeF(-1,1), |
| d=rand.nextRangeF(-1,1); |
| constexpr static float kTolerance = 1.f / (1 << 20); |
| REPORTER_ASSERT(r, SkScalarNearlyEqual( |
| grvx::cross({a,b}, {c,d}), SkPoint::CrossProduct({a,b}, {c,d}), kTolerance)); |
| REPORTER_ASSERT(r, SkScalarNearlyEqual( |
| grvx::dot({a,b}, {c,d}), SkPoint::DotProduct({a,b}, {c,d}), kTolerance)); |
| } |
| } |