55edb50262
Bug: skia:9280 Change-Id: Id8253baa6ca387b6f2f0583f29b2c25cc1005545 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/230880 Commit-Queue: Michael Ludwig <michaelludwig@google.com> Reviewed-by: Robert Phillips <robertphillips@google.com>
115 lines
3.6 KiB
C++
115 lines
3.6 KiB
C++
/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "include/core/SkBitmap.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkShader.h"
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#include "include/effects/SkGradientShader.h"
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#include "include/effects/SkImageFilters.h"
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#include "tests/Test.h"
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static void test_unscaled(skiatest::Reporter* reporter) {
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static const int kWidth = 10;
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static const int kHeight = 10;
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SkIRect ir = SkIRect::MakeWH(kWidth, kHeight);
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SkBitmap filterResult, paintResult;
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filterResult.allocN32Pixels(kWidth, kHeight);
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SkCanvas canvasFilter(filterResult);
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canvasFilter.clear(0x00000000);
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paintResult.allocN32Pixels(kWidth, kHeight);
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SkCanvas canvasPaint(paintResult);
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canvasPaint.clear(0x00000000);
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SkPoint center = SkPoint::Make(SkIntToScalar(5), SkIntToScalar(5));
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SkColor colors[] = {SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN};
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SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1};
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SkScalar radius = SkIntToScalar(5);
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SkPaint gradientPaint;
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gradientPaint.setShader(SkGradientShader::MakeRadial(
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center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkTileMode::kClamp));
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// Test using the image filter
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{
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SkPaint paint;
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paint.setImageFilter(SkImageFilters::Paint(gradientPaint, &ir));
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canvasFilter.drawRect(SkRect::Make(ir), paint);
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}
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// Test using the paint directly
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{
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canvasPaint.drawRect(SkRect::Make(ir), gradientPaint);
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}
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// Assert that both paths yielded the same result
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for (int y = 0; y < kHeight; ++y) {
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const SkPMColor* filterPtr = filterResult.getAddr32(0, y);
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const SkPMColor* paintPtr = paintResult.getAddr32(0, y);
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for (int x = 0; x < kWidth; ++x, ++filterPtr, ++paintPtr) {
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REPORTER_ASSERT(reporter, *filterPtr == *paintPtr);
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}
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}
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}
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static void test_scaled(skiatest::Reporter* reporter) {
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static const int kWidth = 10;
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static const int kHeight = 10;
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SkIRect ir = SkIRect::MakeWH(kWidth, kHeight);
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SkBitmap filterResult, paintResult;
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filterResult.allocN32Pixels(kWidth, kHeight);
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SkCanvas canvasFilter(filterResult);
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canvasFilter.clear(0x00000000);
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paintResult.allocN32Pixels(kWidth, kHeight);
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SkCanvas canvasPaint(paintResult);
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canvasPaint.clear(0x00000000);
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SkPoint center = SkPoint::Make(SkIntToScalar(5), SkIntToScalar(5));
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SkColor colors[] = {SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN};
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SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1};
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SkScalar radius = SkIntToScalar(5);
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SkPaint gradientPaint;
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gradientPaint.setShader(SkGradientShader::MakeRadial(
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center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkTileMode::kClamp));
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// Test using the image filter
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{
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SkPaint paint;
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paint.setImageFilter(SkImageFilters::Paint(gradientPaint, &ir));
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canvasFilter.scale(SkIntToScalar(2), SkIntToScalar(2));
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canvasFilter.drawRect(SkRect::Make(ir), paint);
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}
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// Test using the paint directly
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{
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canvasPaint.scale(SkIntToScalar(2), SkIntToScalar(2));
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canvasPaint.drawRect(SkRect::Make(ir), gradientPaint);
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}
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// Assert that both paths yielded the same result
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for (int y = 0; y < kHeight; ++y) {
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const SkPMColor* filterPtr = filterResult.getAddr32(0, y);
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const SkPMColor* paintPtr = paintResult.getAddr32(0, y);
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for (int x = 0; x < kWidth; ++x, ++filterPtr, ++paintPtr) {
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REPORTER_ASSERT(reporter, *filterPtr == *paintPtr);
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}
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}
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}
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DEF_TEST(PaintImageFilter, reporter) {
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test_unscaled(reporter);
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test_scaled(reporter);
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}
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