1 2 /* 3 * Copyright 2011 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 #include "Test.h" 9 #include "SkCanvas.h" 10 #include "SkShader.h" 11 #include "SkRectShaderImageFilter.h" 12 #include "SkGradientShader.h" 13 14 static void test_asShaderMode(skiatest::Reporter* 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.setConfig(SkBitmap::kARGB_8888_Config, w, h); 21 filterResult.allocPixels(); 22 SkCanvas canvasFilter(filterResult); 23 canvasFilter.clear(0x00000000); 24 25 shaderResult.setConfig(SkBitmap::kARGB_8888_Config, w, h); 26 shaderResult.allocPixels(); 27 SkCanvas canvasShader(shaderResult); 28 canvasShader.clear(0x00000000); 29 30 SkPoint center = SkPoint::Make(SkIntToScalar(5), SkIntToScalar(5)); 31 SkColor colors[] = {SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN}; 32 SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1}; 33 SkScalar radius = SkIntToScalar(5); 34 35 // Test using the image filter 36 { 37 SkShader* s = SkGradientShader::CreateRadial( 38 center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode); 39 SkPaint paint; 40 paint.setImageFilter(SkRectShaderImageFilter::Create(s, r))->unref(); 41 canvasFilter.drawRect(r, paint); 42 s->unref(); 43 } 44 45 // Test using the shader directly 46 { 47 SkShader* s = SkGradientShader::CreateRadial( 48 center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode); 49 SkPaint paint; 50 paint.setShader(s)->unref(); 51 canvasShader.drawRect(r, paint); 52 } 53 54 // Assert that both paths yielded the same result 55 for (int y = 0; y < r.height(); ++y) { 56 const SkPMColor* filterPtr = filterResult.getAddr32(0, y); 57 const SkPMColor* shaderPtr = shaderResult.getAddr32(0, y); 58 for (int x = 0; x < r.width(); ++x, ++filterPtr, ++shaderPtr) { 59 REPORTER_ASSERT(reporter, *filterPtr == *shaderPtr); 60 } 61 } 62 } 63 64 #include "TestClassDef.h" 65 DEFINE_TESTCLASS("ShaderImageFilter", ShaderImageFilterTestClass, test_asShaderMode) 66
