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 "Test.h"
9 #include "SkBitmap.h"
10 #include "SkCanvas.h"
11 #include "SkImage.h"
12 #include "SkPerlinNoiseShader.h"
13 #include "SkRRect.h"
14 #include "SkShader.h"
15 #include "SkSurface.h"
16 #include "SkData.h"
17
check_isabitmap(skiatest::Reporter * reporter,SkShader * shader,int expectedW,int expectedH,SkShader::TileMode expectedX,SkShader::TileMode expectedY,const SkMatrix & expectedM)18 static void check_isabitmap(skiatest::Reporter* reporter, SkShader* shader,
19 int expectedW, int expectedH,
20 SkShader::TileMode expectedX, SkShader::TileMode expectedY,
21 const SkMatrix& expectedM) {
22 SkShader::TileMode tileModes[2];
23 SkMatrix localM;
24
25 #ifdef SK_SUPPORT_LEGACY_SHADER_ISABITMAP
26 SkBitmap bm;
27 REPORTER_ASSERT(reporter, shader->isABitmap(&bm, &localM, tileModes));
28 REPORTER_ASSERT(reporter, bm.width() == expectedW);
29 REPORTER_ASSERT(reporter, bm.height() == expectedH);
30 REPORTER_ASSERT(reporter, localM == expectedM);
31 REPORTER_ASSERT(reporter, tileModes[0] == expectedX);
32 REPORTER_ASSERT(reporter, tileModes[1] == expectedY);
33 #endif
34
35 // wack these so we don't get a false positive
36 localM.setScale(9999, -9999);
37 tileModes[0] = tileModes[1] = (SkShader::TileMode)99;
38
39 SkImage* image = shader->isAImage(&localM, tileModes);
40 REPORTER_ASSERT(reporter, image);
41 REPORTER_ASSERT(reporter, image->width() == expectedW);
42 REPORTER_ASSERT(reporter, image->height() == expectedH);
43 REPORTER_ASSERT(reporter, localM == expectedM);
44 REPORTER_ASSERT(reporter, tileModes[0] == expectedX);
45 REPORTER_ASSERT(reporter, tileModes[1] == expectedY);
46 }
47
DEF_TEST(Shader_isABitmap,reporter)48 DEF_TEST(Shader_isABitmap, reporter) {
49 const int W = 100;
50 const int H = 100;
51 SkBitmap bm;
52 bm.allocN32Pixels(W, H);
53 auto img = SkImage::MakeFromBitmap(bm);
54 const SkMatrix localM = SkMatrix::MakeScale(2, 3);
55 const SkShader::TileMode tmx = SkShader::kRepeat_TileMode;
56 const SkShader::TileMode tmy = SkShader::kMirror_TileMode;
57
58 auto shader0 = SkShader::MakeBitmapShader(bm, tmx, tmy, &localM);
59 auto shader1 = SkImage::MakeFromBitmap(bm)->makeShader(tmx, tmy, &localM);
60
61 check_isabitmap(reporter, shader0.get(), W, H, tmx, tmy, localM);
62 check_isabitmap(reporter, shader1.get(), W, H, tmx, tmy, localM);
63 }
64
65 // Make sure things are ok with just a single leg.
DEF_TEST(ComposeShaderSingle,reporter)66 DEF_TEST(ComposeShaderSingle, reporter) {
67 SkBitmap srcBitmap;
68 srcBitmap.allocN32Pixels(10, 10);
69 srcBitmap.eraseColor(SK_ColorRED);
70 SkCanvas canvas(srcBitmap);
71 SkPaint p;
72 p.setShader(
73 SkShader::MakeComposeShader(
74 SkShader::MakeEmptyShader(),
75 SkPerlinNoiseShader::MakeFractalNoise(1.0f, 1.0f, 2, 0.0f),
76 SkBlendMode::kClear));
77 SkRRect rr;
78 SkVector rd[] = {{0, 0}, {0, 0}, {0, 0}, {0, 0}};
79 rr.setRectRadii({0, 0, 0, 0}, rd);
80 canvas.drawRRect(rr, p);
81 }
82