1 /* 2 * Copyright 2011 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "SkCanvas.h" 9 #include "SkGradientShader.h" 10 #include "SkRectShaderImageFilter.h" 11 #include "SkShader.h" 12 #include "Test.h" 13 14 DEF_TEST(ShaderImageFilter, reporter) { 15 int w = 10, h = 10; 16 SkRect r = SkRect::MakeWH(SkIntToScalar(w), SkIntToScalar(h)); // Make small 10x10 gradient 17 18 SkBitmap filterResult, shaderResult; 19 20 filterResult.allocN32Pixels(w, h); 21 SkCanvas canvasFilter(filterResult); 22 canvasFilter.clear(0x00000000); 23 24 shaderResult.allocN32Pixels(w, h); 25 SkCanvas canvasShader(shaderResult); 26 canvasShader.clear(0x00000000); 27 28 SkPoint center = SkPoint::Make(SkIntToScalar(5), SkIntToScalar(5)); 29 SkColor colors[] = {SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN}; 30 SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1}; 31 SkScalar radius = SkIntToScalar(5); 32 33 // Test using the image filter 34 { 35 SkShader* s = SkGradientShader::CreateRadial( 36 center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode); 37 SkPaint paint; 38 SkImageFilter::CropRect cr(r); 39 paint.setImageFilter(SkRectShaderImageFilter::Create(s, &cr))->unref(); 40 canvasFilter.drawRect(r, paint); 41 s->unref(); 42 } 43 44 // Test using the shader directly 45 { 46 SkShader* s = SkGradientShader::CreateRadial( 47 center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode); 48 SkPaint paint; 49 paint.setShader(s)->unref(); 50 canvasShader.drawRect(r, paint); 51 } 52 53 // Assert that both paths yielded the same result 54 for (int y = 0; y < r.height(); ++y) { 55 const SkPMColor* filterPtr = filterResult.getAddr32(0, y); 56 const SkPMColor* shaderPtr = shaderResult.getAddr32(0, y); 57 for (int x = 0; x < r.width(); ++x, ++filterPtr, ++shaderPtr) { 58 REPORTER_ASSERT(reporter, *filterPtr == *shaderPtr); 59 } 60 } 61 } 62
