diff options
author | djsollen <djsollen@google.com> | 2015-06-05 09:41:18 -0700 |
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committer | Commit bot <commit-bot@chromium.org> | 2015-06-05 09:41:18 -0700 |
commit | b500ffa1a253dca35a7ff846ebece9fe570e3565 (patch) | |
tree | 85b50e24bd131d2bb79053ffb7b3868d9ead2a6c /tests | |
parent | fe79007a1343574860aad6a36188b10e6a63d805 (diff) |
Add ColorMatrix filter tests from Android CTS.
BUG=skia:3848
Review URL: https://codereview.chromium.org/1134753008
Diffstat (limited to 'tests')
-rw-r--r-- | tests/ColorMatrixTest.cpp | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/tests/ColorMatrixTest.cpp b/tests/ColorMatrixTest.cpp new file mode 100644 index 0000000000..1eea4f5a9d --- /dev/null +++ b/tests/ColorMatrixTest.cpp @@ -0,0 +1,101 @@ +/* + * Copyright 2015 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "Test.h" + +#include "SkBitmap.h" +#include "SkCanvas.h" +#include "SkColor.h" +#include "SkColorMatrixFilter.h" +#include "SkPaint.h" + +#include <stdlib.h> + +static inline void assert_color(skiatest::Reporter* reporter, + SkColor expected, SkColor actual, int tolerance) { + REPORTER_ASSERT(reporter, abs((int)(SkColorGetA(expected) - SkColorGetA(actual))) <= tolerance); + REPORTER_ASSERT(reporter, abs((int)(SkColorGetR(expected) - SkColorGetR(actual))) <= tolerance); + REPORTER_ASSERT(reporter, abs((int)(SkColorGetG(expected) - SkColorGetG(actual))) <= tolerance); + REPORTER_ASSERT(reporter, abs((int)(SkColorGetB(expected) - SkColorGetB(actual))) <= tolerance); +} + +static inline void assert_color(skiatest::Reporter* reporter, SkColor expected, SkColor actual) { + const int TOLERANCE = 1; + assert_color(reporter, expected, actual, TOLERANCE); +} + +/** + * This test case is a mirror of the Android CTS tests for MatrixColorFilter + * found in the android.graphics.ColorMatrixColorFilterTest class. + */ +static inline void test_colorMatrixCTS(skiatest::Reporter* reporter) { + + SkBitmap bitmap; + bitmap.allocN32Pixels(1,1); + + SkCanvas canvas(bitmap); + SkPaint paint; + + SkScalar blueToCyan[20] = { + 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, + 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, + 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, + 0.0f, 0.0f, 0.0f, 1.0f, 0.0f }; + paint.setColorFilter(SkColorMatrixFilter::Create(blueToCyan))->unref(); + + paint.setColor(SK_ColorBLUE); + canvas.drawPoint(0, 0, paint); + assert_color(reporter, SK_ColorCYAN, bitmap.getColor(0, 0)); + + paint.setColor(SK_ColorGREEN); + canvas.drawPoint(0, 0, paint); + assert_color(reporter, SK_ColorGREEN, bitmap.getColor(0, 0)); + + paint.setColor(SK_ColorRED); + canvas.drawPoint(0, 0, paint); + assert_color(reporter, SK_ColorRED, bitmap.getColor(0, 0)); + + // color components are clipped, not scaled + paint.setColor(SK_ColorMAGENTA); + canvas.drawPoint(0, 0, paint); + assert_color(reporter, SK_ColorWHITE, bitmap.getColor(0, 0)); + + SkScalar transparentRedAddBlue[20] = { + 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, + 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, + 0.0f, 0.0f, 1.0f, 0.0f, 64.0f, + -0.5f, 0.0f, 0.0f, 1.0f, 0.0f + }; + paint.setColorFilter(SkColorMatrixFilter::Create(transparentRedAddBlue))->unref(); + bitmap.eraseColor(SK_ColorTRANSPARENT); + + paint.setColor(SK_ColorRED); + canvas.drawPoint(0, 0, paint); + assert_color(reporter, SkColorSetARGB(128, 255, 0, 64), bitmap.getColor(0, 0), 2); + + paint.setColor(SK_ColorCYAN); + canvas.drawPoint(0, 0, paint); + // blue gets clipped + assert_color(reporter, SK_ColorCYAN, bitmap.getColor(0, 0)); + + // change array to filter out green + REPORTER_ASSERT(reporter, 1.0f == transparentRedAddBlue[6]); + transparentRedAddBlue[6] = 0.0f; + + // check that changing the array has no effect + canvas.drawPoint(0, 0, paint); + assert_color(reporter, SK_ColorCYAN, bitmap.getColor(0, 0)); + + // create a new filter with the changed matrix + paint.setColorFilter(SkColorMatrixFilter::Create(transparentRedAddBlue))->unref(); + canvas.drawPoint(0, 0, paint); + assert_color(reporter, SK_ColorBLUE, bitmap.getColor(0, 0)); +} + +DEF_TEST(ColorMatrix, reporter) { + test_colorMatrixCTS(reporter); +} |