deee496cd3
BUG=skia: Review URL: https://codereview.chromium.org/162643002 git-svn-id: http://skia.googlecode.com/svn/trunk@13426 2bbb7eff-a529-9590-31e7-b0007b416f81
62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
/*
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* Copyright 2011 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 "SkCanvas.h"
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#include "SkGradientShader.h"
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#include "SkRectShaderImageFilter.h"
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#include "SkShader.h"
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#include "Test.h"
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DEF_TEST(ShaderImageFilter, reporter) {
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int w = 10, h = 10;
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SkRect r = SkRect::MakeWH(SkIntToScalar(w), SkIntToScalar(h)); // Make small 10x10 gradient
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SkBitmap filterResult, shaderResult;
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filterResult.allocN32Pixels(w, h);
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SkCanvas canvasFilter(filterResult);
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canvasFilter.clear(0x00000000);
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shaderResult.allocN32Pixels(w, h);
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SkCanvas canvasShader(shaderResult);
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canvasShader.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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// Test using the image filter
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{
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SkShader* s = SkGradientShader::CreateRadial(
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center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode);
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SkPaint paint;
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SkImageFilter::CropRect cr(r);
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paint.setImageFilter(SkRectShaderImageFilter::Create(s, &cr))->unref();
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canvasFilter.drawRect(r, paint);
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s->unref();
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}
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// Test using the shader directly
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{
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SkShader* s = SkGradientShader::CreateRadial(
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center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode);
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SkPaint paint;
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paint.setShader(s)->unref();
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canvasShader.drawRect(r, paint);
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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 < r.height(); ++y) {
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const SkPMColor* filterPtr = filterResult.getAddr32(0, y);
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const SkPMColor* shaderPtr = shaderResult.getAddr32(0, y);
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for (int x = 0; x < r.width(); ++x, ++filterPtr, ++shaderPtr) {
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REPORTER_ASSERT(reporter, *filterPtr == *shaderPtr);
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}
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}
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}
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