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