submodule/skia/tests/QuickRejectTest.cpp

   1 /*
   2  * Copyright 2011 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 "include/core/SkBitmap.h"
   9 #include "include/core/SkCanvas.h"
  10 #include "include/core/SkPoint3.h"
  11 #include "include/core/SkTypes.h"
  12 #include "include/effects/SkImageFilters.h"
  13 #include "src/core/SkArenaAlloc.h"
  14 #include "tests/Test.h"
  15
  16 static void test_drawBitmap(skiatest::Reporter* reporter) {
  17     SkBitmap src;
  18     src.allocN32Pixels(10, 10);
  19     src.eraseColor(SK_ColorWHITE);
  20
  21     SkBitmap dst;
  22     dst.allocN32Pixels(10, 10);
  23     dst.eraseColor(SK_ColorTRANSPARENT);
  24
  25     SkCanvas canvas(dst);
  26
  27     // we are initially transparent
  28     REPORTER_ASSERT(reporter, 0 == *dst.getAddr32(5, 5));
  29
  30     // we see the bitmap drawn
  31     canvas.drawImage(src.asImage(), 0, 0);
  32     REPORTER_ASSERT(reporter, 0xFFFFFFFF == *dst.getAddr32(5, 5));
  33
  34     // reverify we are clear again
  35     dst.eraseColor(SK_ColorTRANSPARENT);
  36     REPORTER_ASSERT(reporter, 0 == *dst.getAddr32(5, 5));
  37
  38     // if the bitmap is clipped out, we don't draw it
  39     canvas.drawImage(src.asImage(), SkIntToScalar(-10), 0);
  40     REPORTER_ASSERT(reporter, 0 == *dst.getAddr32(5, 5));
  41 }
  42
  43 static void test_layers(skiatest::Reporter* reporter) {
  44     SkCanvas canvas(100, 100);
  45
  46     SkRect r = SkRect::MakeWH(10, 10);
  47     REPORTER_ASSERT(reporter, false == canvas.quickReject(r));
  48
  49     r.offset(300, 300);
  50     REPORTER_ASSERT(reporter, true == canvas.quickReject(r));
  51
  52     // Test that saveLayer updates quickReject
  53     SkRect bounds = SkRect::MakeLTRB(50, 50, 70, 70);
  54     canvas.saveLayer(&bounds, nullptr);
  55     REPORTER_ASSERT(reporter, true == canvas.quickReject(SkRect::MakeWH(10, 10)));
  56     REPORTER_ASSERT(reporter, false == canvas.quickReject(SkRect::MakeWH(60, 60)));
  57 }
  58
  59 static void test_quick_reject(skiatest::Reporter* reporter) {
  60     SkCanvas canvas(100, 100);
  61     SkRect r0 = SkRect::MakeLTRB(-50.0f, -50.0f, 50.0f, 50.0f);
  62     SkRect r1 = SkRect::MakeLTRB(-50.0f, 110.0f, 50.0f, 120.0f);
  63     SkRect r2 = SkRect::MakeLTRB(110.0f, -50.0f, 120.0f, 50.0f);
  64     SkRect r3 = SkRect::MakeLTRB(-120.0f, -50.0f, 120.0f, 50.0f);
  65     SkRect r4 = SkRect::MakeLTRB(-50.0f, -120.0f, 50.0f, 120.0f);
  66     SkRect r5 = SkRect::MakeLTRB(-120.0f, -120.0f, 120.0f, 120.0f);
  67     SkRect r6 = SkRect::MakeLTRB(-120.0f, -120.0f, -110.0f, -110.0f);
  68     SkRect r7 = SkRect::MakeLTRB(SK_ScalarNaN, -50.0f, 50.0f, 50.0f);
  69     SkRect r8 = SkRect::MakeLTRB(-50.0f, SK_ScalarNaN, 50.0f, 50.0f);
  70     SkRect r9 = SkRect::MakeLTRB(-50.0f, -50.0f, SK_ScalarNaN, 50.0f);
  71     SkRect r10 = SkRect::MakeLTRB(-50.0f, -50.0f, 50.0f, SK_ScalarNaN);
  72     REPORTER_ASSERT(reporter, false == canvas.quickReject(r0));
  73     REPORTER_ASSERT(reporter, true == canvas.quickReject(r1));
  74     REPORTER_ASSERT(reporter, true == canvas.quickReject(r2));
  75     REPORTER_ASSERT(reporter, false == canvas.quickReject(r3));
  76     REPORTER_ASSERT(reporter, false == canvas.quickReject(r4));
  77     REPORTER_ASSERT(reporter, false == canvas.quickReject(r5));
  78     REPORTER_ASSERT(reporter, true == canvas.quickReject(r6));
  79     REPORTER_ASSERT(reporter, true == canvas.quickReject(r7));
  80     REPORTER_ASSERT(reporter, true == canvas.quickReject(r8));
  81     REPORTER_ASSERT(reporter, true == canvas.quickReject(r9));
  82     REPORTER_ASSERT(reporter, true == canvas.quickReject(r10));
  83
  84     SkMatrix m = SkMatrix::Scale(2, 2);
  85     m.setTranslateX(10.0f);
  86     m.setTranslateY(10.0f);
  87     canvas.setMatrix(m);
  88     SkRect r11 = SkRect::MakeLTRB(5.0f, 5.0f, 100.0f, 100.0f);
  89     SkRect r12 = SkRect::MakeLTRB(5.0f, 50.0f, 100.0f, 100.0f);
  90     SkRect r13 = SkRect::MakeLTRB(50.0f, 5.0f, 100.0f, 100.0f);
  91     REPORTER_ASSERT(reporter, false == canvas.quickReject(r11));
  92     REPORTER_ASSERT(reporter, true == canvas.quickReject(r12));
  93     REPORTER_ASSERT(reporter, true == canvas.quickReject(r13));
  94 }
  95
  96 DEF_TEST(QuickReject, reporter) {
  97     test_drawBitmap(reporter);
  98     test_layers(reporter);
  99     test_quick_reject(reporter);
 100 }
 101
 102 // Regression test to make sure that we keep fIsScaleTranslate up to date on the canvas.
 103 // It is possible to set a new matrix on the canvas without calling setMatrix().  This tests
 104 // that code path.
 105 DEF_TEST(QuickReject_MatrixState, reporter) {
 106     SkCanvas canvas(100, 100);
 107
 108     SkMatrix matrix;
 109     matrix.setRotate(45.0f);
 110     canvas.setMatrix(matrix);
 111
 112     SkPaint paint;
 113     sk_sp<SkImageFilter> filter = SkImageFilters::DistantLitDiffuse(
 114             SkPoint3::Make(1.0f, 1.0f, 1.0f), 0xFF0000FF, 2.0f, 0.5f, nullptr);
 115     REPORTER_ASSERT(reporter, filter);
 116     paint.setImageFilter(filter);
 117     SkCanvas::SaveLayerRec rec;
 118     rec.fPaint = &paint;
 119     canvas.saveLayer(rec);
 120
 121     // quickReject() will assert if the matrix is out of sync.
 122     canvas.quickReject(SkRect::MakeWH(100.0f, 100.0f));
 123 }