Part 4 of cc/ directory shuffles: output

cc/render_surface_filters_unittest.cc

-// Copyright 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "cc/render_surface_filters.h"
-
-#include "testing/gtest/include/gtest/gtest.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperation.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperations.h"
-
-using namespace WebKit;
-
-namespace cc {
-namespace {
-
-// Checks whether op can be combined with a following color matrix.
-bool isCombined(const WebFilterOperation& op)
-{
-    WebFilterOperations filters;
-    filters.append(op);
-    filters.append(WebFilterOperation::createBrightnessFilter(0)); // brightness(0) is identity.
-    WebFilterOperations optimized = RenderSurfaceFilters::Optimize(filters);
-    return optimized.size() == 1;
-}
-
-TEST(RenderSurfaceFiltersTest, testColorMatrixFiltersCombined)
-{
-    // Several filters should always combine for any amount between 0 and 1:
-    // grayscale, saturate, invert, contrast, opacity.
-    EXPECT_TRUE(isCombined(WebFilterOperation::createGrayscaleFilter(0)));
-    // Note that we use 0.3f to avoid "argument is truncated from 'double' to
-    // 'float'" warnings on Windows. 0.5 is exactly representable as a float, so
-    // there is no warning.
-    EXPECT_TRUE(isCombined(WebFilterOperation::createGrayscaleFilter(0.3f)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createGrayscaleFilter(0.5)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createGrayscaleFilter(1)));
-
-    EXPECT_TRUE(isCombined(WebFilterOperation::createSaturateFilter(0)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createSaturateFilter(0.3f)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createSaturateFilter(0.5)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createSaturateFilter(1)));
-
-    EXPECT_TRUE(isCombined(WebFilterOperation::createInvertFilter(0)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createInvertFilter(0.3f)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createInvertFilter(0.5)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createInvertFilter(1)));
-
-    EXPECT_TRUE(isCombined(WebFilterOperation::createContrastFilter(0)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createContrastFilter(0.3f)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createContrastFilter(0.5)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createContrastFilter(1)));
-
-    EXPECT_TRUE(isCombined(WebFilterOperation::createOpacityFilter(0)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createOpacityFilter(0.3f)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createOpacityFilter(0.5)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createOpacityFilter(1)));
-
-    // Brightness combines when amount <= 1
-    EXPECT_TRUE(isCombined(WebFilterOperation::createBrightnessFilter(0.5)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createBrightnessFilter(1)));
-    EXPECT_FALSE(isCombined(WebFilterOperation::createBrightnessFilter(1.5)));
-
-    // SaturatingBrightness combines only when amount == 0
-    EXPECT_TRUE(isCombined(WebFilterOperation::createSaturatingBrightnessFilter(0)));
-    EXPECT_FALSE(isCombined(WebFilterOperation::createSaturatingBrightnessFilter(0.5)));
-    EXPECT_FALSE(isCombined(WebFilterOperation::createSaturatingBrightnessFilter(1)));
-
-    // Several filters should never combine: blur, drop-shadow.
-    EXPECT_FALSE(isCombined(WebFilterOperation::createBlurFilter(3)));
-    EXPECT_FALSE(isCombined(WebFilterOperation::createDropShadowFilter(WebPoint(2, 2), 3, 0xffffffff)));
-
-    // sepia and hue may or may not combine depending on the value.
-    EXPECT_TRUE(isCombined(WebFilterOperation::createSepiaFilter(0)));
-    EXPECT_FALSE(isCombined(WebFilterOperation::createSepiaFilter(1)));
-    EXPECT_TRUE(isCombined(WebFilterOperation::createHueRotateFilter(0)));
-    EXPECT_FALSE(isCombined(WebFilterOperation::createHueRotateFilter(180)));
-
-    float matrix1[20] = {
-        1, 0, 0, 0, 0,
-        0, 1, 0, 0, 0,
-        0, 0, 1, 0, 0,
-        0, 0, 0, 1, 0,
-    };
-    EXPECT_TRUE(isCombined(WebFilterOperation::createColorMatrixFilter(matrix1)));
-
-    float matrix2[20] = {
-        1, 1, 0, 0, 0,
-        0, 1, 0, 0, 0,
-        0, 0, 1, 0, 0,
-        0, 0, 0, 1, 0,
-    };
-    EXPECT_FALSE(isCombined(WebFilterOperation::createColorMatrixFilter(matrix2)));
-
-    float matrix3[20] = {
-        0.25, 0, 0, 0, 255*0.75,
-        0, 1, 0, 0, 0,
-        0, 0, 1, 0, 0,
-        0, 0, 0, 1, 0,
-    };
-    EXPECT_TRUE(isCombined(WebFilterOperation::createColorMatrixFilter(matrix3)));
-
-    float matrix4[20] = {
-        -0.25, 0.75, 0, 0, 255*0.25,
-        0, 1, 0, 0, 0,
-        0, 0, 1, 0, 0,
-        0, 0, 0, 1, 0,
-    };
-    EXPECT_TRUE(isCombined(WebFilterOperation::createColorMatrixFilter(matrix4)));
-}
-
-TEST(RenderSurfaceFiltersTest, testOptimize)
-{
-    WebFilterOperation combines(WebFilterOperation::createBrightnessFilter(1));
-    WebFilterOperation doesntCombine(WebFilterOperation::createBrightnessFilter(1.5));
-
-    WebFilterOperations filters;
-    WebFilterOperations optimized = RenderSurfaceFilters::Optimize(filters);
-    EXPECT_EQ(0u, optimized.size());
-
-    filters.append(combines);
-    optimized = RenderSurfaceFilters::Optimize(filters);
-    EXPECT_EQ(1u, optimized.size());
-
-    filters.append(combines);
-    optimized = RenderSurfaceFilters::Optimize(filters);
-    EXPECT_EQ(1u, optimized.size());
-
-    filters.append(doesntCombine);
-    optimized = RenderSurfaceFilters::Optimize(filters);
-    EXPECT_EQ(1u, optimized.size());
-
-    filters.append(combines);
-    optimized = RenderSurfaceFilters::Optimize(filters);
-    EXPECT_EQ(2u, optimized.size());
-
-    filters.append(doesntCombine);
-    optimized = RenderSurfaceFilters::Optimize(filters);
-    EXPECT_EQ(2u, optimized.size());
-
-    filters.append(doesntCombine);
-    optimized = RenderSurfaceFilters::Optimize(filters);
-    EXPECT_EQ(3u, optimized.size());
-}
-
-}  // namespace
-}  // namespace cc