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 "Test.h" 9 #include "TestClassDef.h" 10 #include "SkCanvas.h" 11 #include "SkShader.h" 12 #include "SkRectShaderImageFilter.h" 13 #include "SkGradientShader.h" 14 15 DEF_TEST(ShaderImageFilter, reporter) { 16 int w = 10, h = 10; 17 SkRect r = SkRect::MakeWH(SkIntToScalar(w), SkIntToScalar(h)); // Make small 10x10 gradient 18 19 SkBitmap filterResult, shaderResult; 20 21 filterResult.setConfig(SkBitmap::kARGB_8888_Config, w, h); 22 filterResult.allocPixels(); 23 SkCanvas canvasFilter(filterResult); 24 canvasFilter.clear(0x00000000); 25 26 shaderResult.setConfig(SkBitmap::kARGB_8888_Config, w, h); 27 shaderResult.allocPixels(); 28 SkCanvas canvasShader(shaderResult); 29 canvasShader.clear(0x00000000); 30 31 SkPoint center = SkPoint::Make(SkIntToScalar(5), SkIntToScalar(5)); 32 SkColor colors[] = {SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN}; 33 SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1}; 34 SkScalar radius = SkIntToScalar(5); 35 36 // Test using the image filter 37 { 38 SkShader* s = SkGradientShader::CreateRadial( 39 center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode); 40 SkPaint paint; 41 SkImageFilter::CropRect cr(r); 42 paint.setImageFilter(SkRectShaderImageFilter::Create(s, &cr))->unref(); 43 canvasFilter.drawRect(r, paint); 44 s->unref(); 45 } 46 47 // Test using the shader directly 48 { 49 SkShader* s = SkGradientShader::CreateRadial( 50 center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode); 51 SkPaint paint; 52 paint.setShader(s)->unref(); 53 canvasShader.drawRect(r, paint); 54 } 55 56 // Assert that both paths yielded the same result 57 for (int y = 0; y < r.height(); ++y) { 58 const SkPMColor* filterPtr = filterResult.getAddr32(0, y); 59 const SkPMColor* shaderPtr = shaderResult.getAddr32(0, y); 60 for (int x = 0; x < r.width(); ++x, ++filterPtr, ++shaderPtr) { 61 REPORTER_ASSERT(reporter, *filterPtr == *shaderPtr); 62 } 63 } 64 } 65
