WindowRectanglesTest.cpp

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/*
 * Copyright 2016 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/SkRect.h"
#include "include/core/SkTypes.h"
#include "src/base/SkRandom.h"
#include "src/core/SkRectPriv.h"
#include "src/gpu/ganesh/GrWindowRectangles.h"
#include "tests/Test.h"
 
#include <cstring>
 
static SkIRect next_irect(SkRandom& r) {
    return {r.nextS(), r.nextS(), r.nextS(), r.nextS()};
}
 
DEF_TEST(WindowRectangles, reporter) {
    SkRandom r;
 
    SkIRect windowData[GrWindowRectangles::kMaxWindows];
    for (int i = 0; i < GrWindowRectangles::kMaxWindows; ++i) {
        windowData[i] = next_irect(r);
    }
 
    GrWindowRectangles wr;
    for (int i = 0; i < GrWindowRectangles::kMaxWindows - 1; ++i) {
        REPORTER_ASSERT(reporter, wr.count() == i);
        REPORTER_ASSERT(reporter, !memcmp(wr.data(), windowData, i * sizeof(SkIRect)));
 
        GrWindowRectangles wr2(wr);
        REPORTER_ASSERT(reporter, wr2 == wr);
        REPORTER_ASSERT(reporter, wr2.count() == wr.count());
        REPORTER_ASSERT(reporter, !memcmp(wr2.data(), wr.data(), i * sizeof(SkIRect)));
 
        wr.addWindow(windowData[i]);
    }
 
    SkASSERT(wr.count() == GrWindowRectangles::kMaxWindows - 1);
    {
        GrWindowRectangles A(wr), B(wr);
        REPORTER_ASSERT(reporter, B == A);
        REPORTER_ASSERT(reporter, B.data() == A.data()); // Should use copy-on-write.
 
        A.addWindow(windowData[GrWindowRectangles::kMaxWindows - 1]);
        REPORTER_ASSERT(reporter, B.data() != A.data());
        REPORTER_ASSERT(reporter, B != A);
 
        B.addWindow(SkRectPriv::MakeILarge());
        REPORTER_ASSERT(reporter, B != A);
 
        for (int i = 0; i < GrWindowRectangles::kMaxWindows - 1; i++) {
            REPORTER_ASSERT(reporter, A.data()[i] == windowData[i]);
            REPORTER_ASSERT(reporter, B.data()[i] == windowData[i]);
        }
        REPORTER_ASSERT(reporter, A.data()[GrWindowRectangles::kMaxWindows - 1]
                             == windowData[GrWindowRectangles::kMaxWindows - 1]);
        REPORTER_ASSERT(reporter, B.data()[GrWindowRectangles::kMaxWindows - 1]
                             == SkRectPriv::MakeILarge());
    }
    {
        GrWindowRectangles A(wr), B(wr);
        REPORTER_ASSERT(reporter, B == A);
        REPORTER_ASSERT(reporter, B.data() == A.data()); // Should use copy-on-write.
 
        A.addWindow(windowData[GrWindowRectangles::kMaxWindows - 1]);
        B.addWindow(windowData[GrWindowRectangles::kMaxWindows - 1]);
        REPORTER_ASSERT(reporter, B == A);
        REPORTER_ASSERT(reporter, B.data() != A.data());
 
        for (int i = 0; i < GrWindowRectangles::kMaxWindows; i++) {
            REPORTER_ASSERT(reporter, B.data()[i] ==   A.data()[i]);
            REPORTER_ASSERT(reporter, A.data()[i] == windowData[i]);
        }
    }
}