1 /*
2 * Copyright 2017 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/SkColor.h"
10 #include "include/core/SkColorSpace.h"
11 #include "include/core/SkImageInfo.h"
12 #include "include/core/SkMatrix.h"
13 #include "include/core/SkPath.h"
14 #include "include/core/SkPathTypes.h"
15 #include "include/core/SkRect.h"
16 #include "include/core/SkStrokeRec.h"
17 #include "include/core/SkSurfaceProps.h"
18 #include "include/core/SkTypes.h"
19 #include "include/gpu/ganesh/GrContextOptions.h"
20 #include "include/gpu/ganesh/GrDirectContext.h"
21 #include "include/private/SkColorData.h"
22 #include "include/private/gpu/ganesh/GrTypesPriv.h"
23 #include "src/gpu/SkBackingFit.h"
24 #include "src/gpu/ganesh/GrDirectContextPriv.h"
25 #include "src/gpu/ganesh/GrFragmentProcessor.h"
26 #include "src/gpu/ganesh/GrPaint.h"
27 #include "src/gpu/ganesh/GrStyle.h"
28 #include "src/gpu/ganesh/SurfaceDrawContext.h"
29 #include "tests/CtsEnforcement.h"
30 #include "tests/Test.h"
31 #include "tools/gpu/ContextType.h"
32
33 #include <memory>
34 #include <utility>
35
only_allow_default(GrContextOptions * options)36 static void only_allow_default(GrContextOptions* options) {
37 options->fGpuPathRenderers = GpuPathRenderers::kNone;
38 }
39
read_back(GrDirectContext * dContext,skgpu::ganesh::SurfaceDrawContext * sdc,int width,int height)40 static SkBitmap read_back(GrDirectContext* dContext,
41 skgpu::ganesh::SurfaceDrawContext* sdc,
42 int width,
43 int height) {
44 SkImageInfo dstII = SkImageInfo::MakeN32Premul(width, height);
45
46 SkBitmap bm;
47 bm.allocPixels(dstII);
48
49 sdc->readPixels(dContext, bm.pixmap(), {0, 0});
50
51 return bm;
52 }
53
make_path(const SkRect & outer,int inset,SkPathFillType fill)54 static SkPath make_path(const SkRect& outer, int inset, SkPathFillType fill) {
55 SkPath p;
56
57 p.addRect(outer, SkPathDirection::kCW);
58 p.addRect(outer.makeInset(inset, inset), SkPathDirection::kCCW);
59 p.setFillType(fill);
60 return p;
61 }
62
63
64 static const int kBigSize = 64; // This should be a power of 2
65 static const int kPad = 3;
66
67 // From crbug.com/769898:
68 // create an approx fit render target context that will have extra space (i.e., npot)
69 // draw an inverse wound concave path into it - forcing use of the stencil-using path renderer
70 // throw the RTC away so the backing GrSurface/GrStencilBuffer can be reused
71 // create a new render target context that will reuse the prior GrSurface
72 // draw a normally wound concave path that touches outside of the approx fit RTC's content rect
73 //
74 // When the bug manifests the DefaultPathRenderer/GrMSAAPathRenderer is/was leaving the stencil
75 // buffer outside of the first content rect in a bad state and the second draw would be incorrect.
76
run_test(GrDirectContext * dContext,skiatest::Reporter * reporter)77 static void run_test(GrDirectContext* dContext, skiatest::Reporter* reporter) {
78 SkPath invPath = make_path(SkRect::MakeXYWH(0, 0, kBigSize, kBigSize),
79 kBigSize/2-1, SkPathFillType::kInverseWinding);
80 SkPath path = make_path(SkRect::MakeXYWH(0, 0, kBigSize, kBigSize),
81 kPad, SkPathFillType::kWinding);
82
83 GrStyle style(SkStrokeRec::kFill_InitStyle);
84
85 {
86 auto sdc = skgpu::ganesh::SurfaceDrawContext::Make(dContext,
87 GrColorType::kRGBA_8888,
88 nullptr,
89 SkBackingFit::kApprox,
90 {kBigSize / 2 + 1, kBigSize / 2 + 1},
91 SkSurfaceProps(),
92 /*label=*/{});
93
94 sdc->clear(SK_PMColor4fBLACK);
95
96 GrPaint paint;
97
98 const SkPMColor4f color = { 1.0f, 0.0f, 0.0f, 1.0f };
99 auto fp = GrFragmentProcessor::MakeColor(color);
100 paint.setColorFragmentProcessor(std::move(fp));
101
102 sdc->drawPath(nullptr, std::move(paint), GrAA::kNo, SkMatrix::I(), invPath, style);
103
104 dContext->priv().flushSurface(sdc->asSurfaceProxy());
105 }
106
107 {
108 auto sdc = skgpu::ganesh::SurfaceDrawContext::Make(dContext,
109 GrColorType::kRGBA_8888,
110 nullptr,
111 SkBackingFit::kExact,
112 {kBigSize, kBigSize},
113 SkSurfaceProps(),
114 /*label=*/{});
115
116 sdc->clear(SK_PMColor4fBLACK);
117
118 GrPaint paint;
119
120 const SkPMColor4f color = { 0.0f, 1.0f, 0.0f, 1.0f };
121 auto fp = GrFragmentProcessor::MakeColor(color);
122 paint.setColorFragmentProcessor(std::move(fp));
123
124 sdc->drawPath(nullptr, std::move(paint), GrAA::kNo,
125 SkMatrix::I(), path, style);
126
127 SkBitmap bm = read_back(dContext, sdc.get(), kBigSize, kBigSize);
128
129 bool correct = true;
130 for (int y = kBigSize/2+1; y < kBigSize-kPad-1 && correct; ++y) {
131 for (int x = kPad+1; x < kBigSize-kPad-1 && correct; ++x) {
132 correct = bm.getColor(x, y) == SK_ColorBLACK;
133 REPORTER_ASSERT(reporter, correct);
134 }
135 }
136 }
137 }
138
DEF_GANESH_TEST_FOR_CONTEXTS(DefaultPathRendererTest,skgpu::IsRenderingContext,reporter,ctxInfo,only_allow_default,CtsEnforcement::kApiLevel_T)139 DEF_GANESH_TEST_FOR_CONTEXTS(DefaultPathRendererTest,
140 skgpu::IsRenderingContext,
141 reporter,
142 ctxInfo,
143 only_allow_default,
144 CtsEnforcement::kApiLevel_T) {
145 auto ctx = ctxInfo.directContext();
146
147 run_test(ctx, reporter);
148 }
149