| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkCanvas.h" |
| #include "SkGradientShader.h" |
| #include "SkRectShaderImageFilter.h" |
| #include "SkShader.h" |
| #include "Test.h" |
| |
| DEF_TEST(ShaderImageFilter, reporter) { |
| int w = 10, h = 10; |
| SkRect r = SkRect::MakeWH(SkIntToScalar(w), SkIntToScalar(h)); // Make small 10x10 gradient |
| |
| SkBitmap filterResult, shaderResult; |
| |
| filterResult.allocN32Pixels(w, h); |
| SkCanvas canvasFilter(filterResult); |
| canvasFilter.clear(0x00000000); |
| |
| shaderResult.allocN32Pixels(w, h); |
| SkCanvas canvasShader(shaderResult); |
| canvasShader.clear(0x00000000); |
| |
| SkPoint center = SkPoint::Make(SkIntToScalar(5), SkIntToScalar(5)); |
| SkColor colors[] = {SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN}; |
| SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1}; |
| SkScalar radius = SkIntToScalar(5); |
| |
| // Test using the image filter |
| { |
| SkShader* s = SkGradientShader::CreateRadial( |
| center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode); |
| SkPaint paint; |
| SkImageFilter::CropRect cr(r); |
| paint.setImageFilter(SkRectShaderImageFilter::Create(s, &cr))->unref(); |
| canvasFilter.drawRect(r, paint); |
| s->unref(); |
| } |
| |
| // Test using the shader directly |
| { |
| SkShader* s = SkGradientShader::CreateRadial( |
| center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode); |
| SkPaint paint; |
| paint.setShader(s)->unref(); |
| canvasShader.drawRect(r, paint); |
| } |
| |
| // Assert that both paths yielded the same result |
| for (int y = 0; y < r.height(); ++y) { |
| const SkPMColor* filterPtr = filterResult.getAddr32(0, y); |
| const SkPMColor* shaderPtr = shaderResult.getAddr32(0, y); |
| for (int x = 0; x < r.width(); ++x, ++filterPtr, ++shaderPtr) { |
| REPORTER_ASSERT(reporter, *filterPtr == *shaderPtr); |
| } |
| } |
| } |