1 /*
2 * Copyright 2016 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 "include/core/SkBitmap.h"
9 #include "include/core/SkCanvas.h"
10 #include "include/core/SkData.h"
11 #include "include/core/SkImage.h"
12 #include "include/core/SkRRect.h"
13 #include "include/core/SkShader.h"
14 #include "include/core/SkSurface.h"
15 #include "include/effects/SkPerlinNoiseShader.h"
16 #include "tests/Test.h"
17
check_isaimage(skiatest::Reporter * reporter,SkShader * shader,int expectedW,int expectedH,SkTileMode expectedX,SkTileMode expectedY,const SkMatrix & expectedM)18 static void check_isaimage(skiatest::Reporter* reporter, SkShader* shader,
19 int expectedW, int expectedH,
20 SkTileMode expectedX, SkTileMode expectedY,
21 const SkMatrix& expectedM) {
22 SkTileMode tileModes[2];
23 SkMatrix localM;
24
25 // wack these so we don't get a false positive
26 localM.setScale(9999, -9999);
27 tileModes[0] = tileModes[1] = (SkTileMode)99;
28
29 SkImage* image = shader->isAImage(&localM, tileModes);
30 REPORTER_ASSERT(reporter, image);
31 REPORTER_ASSERT(reporter, image->width() == expectedW);
32 REPORTER_ASSERT(reporter, image->height() == expectedH);
33 REPORTER_ASSERT(reporter, localM == expectedM);
34 REPORTER_ASSERT(reporter, tileModes[0] == expectedX);
35 REPORTER_ASSERT(reporter, tileModes[1] == expectedY);
36 }
37
DEF_TEST(Shader_isAImage,reporter)38 DEF_TEST(Shader_isAImage, reporter) {
39 const int W = 100;
40 const int H = 100;
41 SkBitmap bm;
42 bm.allocN32Pixels(W, H);
43 auto img = bm.asImage();
44 const SkMatrix localM = SkMatrix::Scale(2, 3);
45 const SkTileMode tmx = SkTileMode::kRepeat;
46 const SkTileMode tmy = SkTileMode::kMirror;
47
48 auto shader0 = bm.makeShader(tmx, tmy, SkSamplingOptions(), localM);
49 auto shader1 = bm.asImage()->makeShader(tmx, tmy, SkSamplingOptions(), localM);
50
51 check_isaimage(reporter, shader0.get(), W, H, tmx, tmy, localM);
52 check_isaimage(reporter, shader1.get(), W, H, tmx, tmy, localM);
53 }
54
55 // Make sure things are ok with just a single leg.
DEF_TEST(ComposeShaderSingle,reporter)56 DEF_TEST(ComposeShaderSingle, reporter) {
57 SkBitmap srcBitmap;
58 srcBitmap.allocN32Pixels(10, 10);
59 srcBitmap.eraseColor(SK_ColorRED);
60 SkCanvas canvas(srcBitmap);
61 SkPaint p;
62 p.setShader(
63 SkShaders::Blend(SkBlendMode::kClear,
64 SkShaders::Empty(),
65 SkPerlinNoiseShader::MakeFractalNoise(1.0f, 1.0f, 2, 0.0f)));
66 SkRRect rr;
67 SkVector rd[] = {{0, 0}, {0, 0}, {0, 0}, {0, 0}};
68 rr.setRectRadii({0, 0, 0, 0}, rd);
69 canvas.drawRRect(rr, p);
70 }
71