cc/CCRenderSurfaceFiltersTest.cpp

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "config.h"
   6
   7 #include "CCRenderSurfaceFilters.h"
   8
   9 #include "CompositorFakeWebGraphicsContext3D.h"
  10 #include <gtest/gtest.h>
  11 #include <public/WebFilterOperation.h>
  12 #include <public/WebFilterOperations.h>
  13 #include <wtf/RefPtr.h>
  14
  15 using namespace cc;
  16 using namespace WebKit;
  17
  18 namespace {
  19
  20 // Checks whether op can be combined with a following color matrix.
  21 bool isCombined(const WebFilterOperation& op)
  22 {
  23     WebFilterOperations filters;
  24     filters.append(op);
  25     filters.append(WebFilterOperation::createBrightnessFilter(0)); // brightness(0) is identity.
  26     WebFilterOperations optimized = CCRenderSurfaceFilters::optimize(filters);
  27     return optimized.size() == 1;
  28 }
  29
  30 TEST(CCRenderSurfaceFiltersTest, testColorMatrixFiltersCombined)
  31 {
  32     // Several filters should always combine for any amount between 0 and 1:
  33     // grayscale, saturate, invert, contrast, opacity.
  34     EXPECT_TRUE(isCombined(WebFilterOperation::createGrayscaleFilter(0)));
  35     // Note that we use 0.3f to avoid "argument is truncated from 'double' to
  36     // 'float'" warnings on Windows. 0.5 is exactly representable as a float, so
  37     // there is no warning.
  38     EXPECT_TRUE(isCombined(WebFilterOperation::createGrayscaleFilter(0.3f)));
  39     EXPECT_TRUE(isCombined(WebFilterOperation::createGrayscaleFilter(0.5)));
  40     EXPECT_TRUE(isCombined(WebFilterOperation::createGrayscaleFilter(1)));
  41
  42     EXPECT_TRUE(isCombined(WebFilterOperation::createSaturateFilter(0)));
  43     EXPECT_TRUE(isCombined(WebFilterOperation::createSaturateFilter(0.3f)));
  44     EXPECT_TRUE(isCombined(WebFilterOperation::createSaturateFilter(0.5)));
  45     EXPECT_TRUE(isCombined(WebFilterOperation::createSaturateFilter(1)));
  46
  47     EXPECT_TRUE(isCombined(WebFilterOperation::createInvertFilter(0)));
  48     EXPECT_TRUE(isCombined(WebFilterOperation::createInvertFilter(0.3f)));
  49     EXPECT_TRUE(isCombined(WebFilterOperation::createInvertFilter(0.5)));
  50     EXPECT_TRUE(isCombined(WebFilterOperation::createInvertFilter(1)));
  51
  52     EXPECT_TRUE(isCombined(WebFilterOperation::createContrastFilter(0)));
  53     EXPECT_TRUE(isCombined(WebFilterOperation::createContrastFilter(0.3f)));
  54     EXPECT_TRUE(isCombined(WebFilterOperation::createContrastFilter(0.5)));
  55     EXPECT_TRUE(isCombined(WebFilterOperation::createContrastFilter(1)));
  56
  57     EXPECT_TRUE(isCombined(WebFilterOperation::createOpacityFilter(0)));
  58     EXPECT_TRUE(isCombined(WebFilterOperation::createOpacityFilter(0.3f)));
  59     EXPECT_TRUE(isCombined(WebFilterOperation::createOpacityFilter(0.5)));
  60     EXPECT_TRUE(isCombined(WebFilterOperation::createOpacityFilter(1)));
  61
  62     // Several filters should never combine: brightness(amount > 0), blur, drop-shadow.
  63     EXPECT_FALSE(isCombined(WebFilterOperation::createBrightnessFilter(0.5)));
  64     EXPECT_FALSE(isCombined(WebFilterOperation::createBrightnessFilter(1)));
  65     EXPECT_FALSE(isCombined(WebFilterOperation::createBlurFilter(3)));
  66     EXPECT_FALSE(isCombined(WebFilterOperation::createDropShadowFilter(WebPoint(2, 2), 3, 0xffffffff)));
  67
  68     // sepia and hue may or may not combine depending on the value.
  69     EXPECT_TRUE(isCombined(WebFilterOperation::createSepiaFilter(0)));
  70     EXPECT_FALSE(isCombined(WebFilterOperation::createSepiaFilter(1)));
  71     EXPECT_TRUE(isCombined(WebFilterOperation::createHueRotateFilter(0)));
  72     EXPECT_FALSE(isCombined(WebFilterOperation::createHueRotateFilter(180)));
  73
  74     float matrix1[20] = {
  75         1, 0, 0, 0, 0,
  76         0, 1, 0, 0, 0,
  77         0, 0, 1, 0, 0,
  78         0, 0, 0, 1, 0,
  79     };
  80     EXPECT_TRUE(isCombined(WebFilterOperation::createColorMatrixFilter(matrix1)));
  81
  82     float matrix2[20] = {
  83         1, 1, 0, 0, 0,
  84         0, 1, 0, 0, 0,
  85         0, 0, 1, 0, 0,
  86         0, 0, 0, 1, 0,
  87     };
  88     EXPECT_FALSE(isCombined(WebFilterOperation::createColorMatrixFilter(matrix2)));
  89
  90     float matrix3[20] = {
  91         0.25, 0, 0, 0, 255*0.75,
  92         0, 1, 0, 0, 0,
  93         0, 0, 1, 0, 0,
  94         0, 0, 0, 1, 0,
  95     };
  96     EXPECT_TRUE(isCombined(WebFilterOperation::createColorMatrixFilter(matrix3)));
  97
  98     float matrix4[20] = {
  99         -0.25, 0.75, 0, 0, 255*0.25,
 100         0, 1, 0, 0, 0,
 101         0, 0, 1, 0, 0,
 102         0, 0, 0, 1, 0,
 103     };
 104     EXPECT_TRUE(isCombined(WebFilterOperation::createColorMatrixFilter(matrix4)));
 105 }
 106
 107 TEST(CCRenderSurfaceFiltersTest, testOptimize)
 108 {
 109     WebFilterOperation combines(WebFilterOperation::createBrightnessFilter(0));
 110     WebFilterOperation doesntCombine(WebFilterOperation::createBrightnessFilter(1));
 111
 112     WebFilterOperations filters;
 113     WebFilterOperations optimized = CCRenderSurfaceFilters::optimize(filters);
 114     EXPECT_EQ(0u, optimized.size());
 115
 116     filters.append(combines);
 117     optimized = CCRenderSurfaceFilters::optimize(filters);
 118     EXPECT_EQ(1u, optimized.size());
 119
 120     filters.append(combines);
 121     optimized = CCRenderSurfaceFilters::optimize(filters);
 122     EXPECT_EQ(1u, optimized.size());
 123
 124     filters.append(doesntCombine);
 125     optimized = CCRenderSurfaceFilters::optimize(filters);
 126     EXPECT_EQ(1u, optimized.size());
 127
 128     filters.append(combines);
 129     optimized = CCRenderSurfaceFilters::optimize(filters);
 130     EXPECT_EQ(2u, optimized.size());
 131
 132     filters.append(doesntCombine);
 133     optimized = CCRenderSurfaceFilters::optimize(filters);
 134     EXPECT_EQ(2u, optimized.size());
 135
 136     filters.append(doesntCombine);
 137     optimized = CCRenderSurfaceFilters::optimize(filters);
 138     EXPECT_EQ(3u, optimized.size());
 139 }
 140
 141 } // namespace