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      1 /*
      2  * Copyright 2016 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "SkTypes.h"
      9 #include "Test.h"
     10 
     11 #if SK_SUPPORT_GPU
     12 
     13 #include "GrWindowRectangles.h"
     14 
     15 static SkIRect next_irect(SkRandom& r) {
     16     return {r.nextS(), r.nextS(), r.nextS(), r.nextS()};
     17 }
     18 
     19 DEF_TEST(WindowRectangles, reporter) {
     20     SkRandom r;
     21 
     22     SkIRect windowData[GrWindowRectangles::kMaxWindows];
     23     for (int i = 0; i < GrWindowRectangles::kMaxWindows; ++i) {
     24         windowData[i] = next_irect(r);
     25     }
     26 
     27     GrWindowRectangles wr;
     28     for (int i = 0; i < GrWindowRectangles::kMaxWindows - 1; ++i) {
     29         REPORTER_ASSERT(reporter, wr.count() == i);
     30         REPORTER_ASSERT(reporter, !memcmp(wr.data(), windowData, i * sizeof(SkIRect)));
     31 
     32         GrWindowRectangles wr2(wr);
     33         REPORTER_ASSERT(reporter, wr2 == wr);
     34         REPORTER_ASSERT(reporter, wr2.count() == wr.count());
     35         REPORTER_ASSERT(reporter, !memcmp(wr2.data(), wr.data(), i * sizeof(SkIRect)));
     36 
     37         wr.addWindow(windowData[i]);
     38     }
     39 
     40     SkASSERT(wr.count() == GrWindowRectangles::kMaxWindows - 1);
     41     {
     42         GrWindowRectangles A(wr), B(wr);
     43         REPORTER_ASSERT(reporter, B == A);
     44         REPORTER_ASSERT(reporter, B.data() == A.data()); // Should use copy-on-write.
     45 
     46         A.addWindow(windowData[GrWindowRectangles::kMaxWindows - 1]);
     47         REPORTER_ASSERT(reporter, B.data() != A.data());
     48         REPORTER_ASSERT(reporter, B != A);
     49 
     50         B.addWindow(SkIRect::MakeLargest());
     51         REPORTER_ASSERT(reporter, B != A);
     52 
     53         REPORTER_ASSERT(reporter, !memcmp(A.data(), windowData,
     54                                           GrWindowRectangles::kMaxWindows * sizeof(SkIRect)));
     55         REPORTER_ASSERT(reporter, !memcmp(B.data(), windowData,
     56                                           (GrWindowRectangles::kMaxWindows - 1) * sizeof(SkIRect)));
     57         REPORTER_ASSERT(reporter,
     58                         B.data()[GrWindowRectangles::kMaxWindows - 1] == SkIRect::MakeLargest());
     59     }
     60     {
     61         GrWindowRectangles A(wr), B(wr);
     62         REPORTER_ASSERT(reporter, B == A);
     63         REPORTER_ASSERT(reporter, B.data() == A.data()); // Should use copy-on-write.
     64 
     65         A.addWindow(windowData[GrWindowRectangles::kMaxWindows - 1]);
     66         B.addWindow(windowData[GrWindowRectangles::kMaxWindows - 1]);
     67         REPORTER_ASSERT(reporter, B == A);
     68         REPORTER_ASSERT(reporter, B.data() != A.data());
     69         REPORTER_ASSERT(reporter, !memcmp(B.data(), A.data(),
     70                                           GrWindowRectangles::kMaxWindows * sizeof(SkIRect)));
     71         REPORTER_ASSERT(reporter, !memcmp(A.data(), windowData,
     72                                           GrWindowRectangles::kMaxWindows * sizeof(SkIRect)));
     73     }
     74 }
     75 
     76 #endif
     77