Update rive-cpp to 2.0 version
[platform/core/uifw/rive-tizen.git] / submodule / skia / gm / runtimeimagefilter.cpp
1 /*
2  * Copyright 2012 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 "gm/gm.h"
9 #include "include/core/SkCanvas.h"
10 #include "include/core/SkColor.h"
11 #include "include/core/SkFont.h"
12 #include "include/core/SkImageFilter.h"
13 #include "include/core/SkImageInfo.h"
14 #include "include/core/SkPaint.h"
15 #include "include/core/SkPixelRef.h"
16 #include "include/core/SkRect.h"
17 #include "include/core/SkRefCnt.h"
18 #include "include/core/SkScalar.h"
19 #include "include/effects/SkImageFilters.h"
20 #include "include/effects/SkRuntimeEffect.h"
21 #include "include/utils/SkRandom.h"
22 #include "src/effects/imagefilters/SkRuntimeImageFilter.h"
23 #include "tools/Resources.h"
24 #include "tools/ToolUtils.h"
25
26 static sk_sp<SkImageFilter> make_filter() {
27     sk_sp<SkRuntimeEffect> effect = SkRuntimeEffect::MakeForShader(SkString(R"(
28         uniform shader child;
29         half4 main(float2 coord) {
30             coord.x += sin(coord.y / 3) * 4;
31             return child.eval(coord);
32         }
33     )")).effect;
34     SkRuntimeShaderBuilder builder(std::move(effect));
35     return SkImageFilters::RuntimeShader(builder, /*childShaderName=*/nullptr, /*input=*/nullptr);
36 }
37
38 DEF_SIMPLE_GM_BG(rtif_distort, canvas, 500, 750, SK_ColorBLACK) {
39     SkRect clip = SkRect::MakeWH(250, 250);
40     SkPaint filterPaint;
41     filterPaint.setImageFilter(make_filter());
42
43     auto draw_layer = [&](SkScalar tx, SkScalar ty, SkMatrix m) {
44         canvas->save();
45         canvas->translate(tx, ty);
46         canvas->clipRect(clip);
47         canvas->concat(m);
48         canvas->saveLayer(nullptr, &filterPaint);
49         const char* str = "The quick brown fox jumped over the lazy dog.";
50         SkRandom rand;
51         SkFont font(ToolUtils::create_portable_typeface());
52         for (int i = 0; i < 25; ++i) {
53             int x = rand.nextULessThan(500);
54             int y = rand.nextULessThan(500);
55             SkPaint paint;
56             paint.setColor(ToolUtils::color_to_565(rand.nextBits(24) | 0xFF000000));
57             font.setSize(rand.nextRangeScalar(0, 300));
58             canvas->drawString(str, SkIntToScalar(x), SkIntToScalar(y), font, paint);
59         }
60         canvas->restore();
61         canvas->restore();
62     };
63
64     draw_layer(  0,   0, SkMatrix::I());
65     draw_layer(250,   0, SkMatrix::Scale(0.5f, 0.5f));
66     draw_layer(  0, 250, SkMatrix::RotateDeg(45, {125, 125}));
67     draw_layer(250, 250, SkMatrix::Scale(0.5f, 0.5f) * SkMatrix::RotateDeg(45, {125, 125}));
68     draw_layer(  0, 500, SkMatrix::Skew(-0.5f, 0));
69     SkMatrix p = SkMatrix::I();
70     p.setPerspX(0.0015f);
71     p.setPerspY(-0.0015f);
72     draw_layer(250, 500, p);
73 }
74
75 DEF_SIMPLE_GM(rtif_unsharp, canvas, 512, 256) {
76     // Similar to "unsharp_rt", which does the entire unsharp filter in a single shader. This uses
77     // the image filter DAG to compute the blurred version, then does the weighted subtraction.
78     sk_sp<SkRuntimeEffect> effect = SkRuntimeEffect::MakeForShader(SkString(R"(
79         uniform shader content;
80         uniform shader blurred;
81         vec4 main(vec2 coord) {
82             vec4 c = content.eval(coord);
83             vec4 b = blurred.eval(coord);
84             return c + (c - b) * 4;
85         }
86     )")).effect;
87     SkRuntimeShaderBuilder builder(std::move(effect));
88
89     auto image = GetResourceAsImage("images/mandrill_256.png");
90     auto blurredSrc = SkImageFilters::Blur(1, 1, /*input=*/nullptr);
91
92     const char* childNames[] = { "content", "blurred" };
93     sk_sp<SkImageFilter> childNodes[] = { nullptr, blurredSrc };
94
95     auto sharpened = SkImageFilters::RuntimeShader(builder, childNames, childNodes, 2);
96
97     canvas->drawImage(image, 0, 0);
98     canvas->translate(256, 0);
99
100     SkPaint paint;
101     paint.setImageFilter(sharpened);
102     canvas->saveLayer({ 0, 0, 256, 256 }, &paint);
103     canvas->drawImage(image, 0, 0);
104     canvas->restore();
105 }