| /* |
| * Copyright 2021 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkTypes.h" |
| #include "src/base/SkRandom.h" |
| #include "src/gpu/tessellate/CullTest.h" |
| #include "tests/Test.h" |
| |
| #include <initializer_list> |
| |
| namespace skgpu::tess { |
| |
| const SkMatrix gMatrices[] = { |
| SkMatrix::I(), |
| SkMatrix::Translate(25, -1000), |
| SkMatrix::Scale(.5f, 1000.1f), |
| SkMatrix::MakeAll(1000.1f, .0f, -100, |
| 0.0f, .5f, -3000, |
| 0.0f, .0f, 1), |
| SkMatrix::MakeAll(0, 1, 0, |
| 1, 0, 0, |
| 0, 0, 1), |
| SkMatrix::MakeAll( 2, 7.0f, -100, |
| -8000, .5f, 2000, |
| 0, .0f, 1), |
| }; |
| |
| DEF_TEST(CullTestTest, reporter) { |
| SkRandom rand; |
| float l=10, t=2000, r=100, b=2064; |
| SkRect viewportRect{l, t, r, b}; |
| float valuesL[4] = {l-20, l-10, l+10, l+20}; |
| float valuesT[4] = {t-20, t-10, t+10, t+20}; |
| float valuesR[4] = {r+20, r+10, r-10, r-20}; |
| float valuesB[4] = {b+20, b+10, b-10, b-20}; |
| for (SkMatrix m : gMatrices) { |
| CullTest cullTest(viewportRect, m); |
| SkMatrix inverse; |
| SkAssertResult(m.invert(&inverse)); |
| for (const float* y : {valuesT, valuesB}) { |
| for (const float* x : {valuesL, valuesR}) { |
| for (int i = 0; i < 500; ++i) { |
| int mask = rand.nextU(); |
| const SkPoint devPts[4] = {{x[(mask >> 0) & 3], y[(mask >> 2) & 3]}, |
| {x[(mask >> 4) & 3], y[(mask >> 6) & 3]}, |
| {x[(mask >> 8) & 3], y[(mask >> 10) & 3]}, |
| {x[(mask >> 12) & 3], y[(mask >> 14) & 3]}}; |
| |
| SkPoint localPts[4]; |
| inverse.mapPoints(localPts, devPts, 4); |
| |
| REPORTER_ASSERT(reporter, |
| cullTest.isVisible(localPts[0]) == |
| viewportRect.contains(devPts[0].fX, devPts[0].fY)); |
| |
| { |
| SkRect devBounds3; |
| devBounds3.setBounds(devPts, 3); |
| // Outset devBounds because SkRect::intersects returns false on empty, which is NOT |
| // the behavior we want. |
| devBounds3.outset(1e-3f, 1e-3f); |
| REPORTER_ASSERT(reporter, |
| cullTest.areVisible3(localPts) == viewportRect.intersects(devBounds3)); |
| } |
| |
| { |
| SkRect devBounds4; |
| devBounds4.setBounds(devPts, 4); |
| // Outset devBounds because SkRect::intersects returns false on empty, which is NOT |
| // the behavior we want. |
| devBounds4.outset(1e-3f, 1e-3f); |
| REPORTER_ASSERT(reporter, |
| cullTest.areVisible4(localPts) == viewportRect.intersects(devBounds4)); |
| } |
| }}} |
| } |
| } |
| |
| } // namespace skgpu::tess |