1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkTypes.h"
#include "GrClip.h"
#include "GrColor.h"
#include "GrContext.h"
#include "GrContextFactory.h"
#include "GrContextOptions.h"
#include "GrContextPriv.h"
#include "GrFragmentProcessor.h"
#include "GrPaint.h"
#include "GrRenderTargetContext.h"
#include "GrStyle.h"
#include "GrTypesPriv.h"
#include "SkBitmap.h"
#include "SkColor.h"
#include "SkColorSpace.h"
#include "SkImageInfo.h"
#include "SkMatrix.h"
#include "SkPath.h"
#include "SkRect.h"
#include "SkRefCnt.h"
#include "SkStrokeRec.h"
#include "Test.h"
#include "effects/GrConstColorProcessor.h"
#include <utility>
static void only_allow_default(GrContextOptions* options) {
options->fGpuPathRenderers = GpuPathRenderers::kNone;
}
static SkBitmap read_back(GrRenderTargetContext* rtc, int width, int height) {
SkImageInfo dstII = SkImageInfo::MakeN32Premul(width, height);
SkBitmap bm;
bm.allocPixels(dstII);
rtc->readPixels(dstII, bm.getAddr(0, 0), bm.rowBytes(), 0, 0, 0);
return bm;
}
static SkPath make_path(const SkRect& outer, int inset, SkPath::FillType fill) {
SkPath p;
p.addRect(outer, SkPath::kCW_Direction);
p.addRect(outer.makeInset(inset, inset), SkPath::kCCW_Direction);
p.setFillType(fill);
return p;
}
static const int kBigSize = 64; // This should be a power of 2
static const int kPad = 3;
// From crbug.com/769898:
// create an approx fit render target context that will have extra space (i.e., npot)
// draw an inverse wound concave path into it - forcing use of the stencil-using path renderer
// throw the RTC away so the backing GrSurface/GrStencilBuffer can be reused
// create a new render target context that will reuse the prior GrSurface
// draw a normally wound concave path that touches outside of the approx fit RTC's content rect
//
// When the bug manifests the GrDefaultPathRenderer/GrMSAAPathRenderer is/was leaving the stencil
// buffer outside of the first content rect in a bad state and the second draw would be incorrect.
static void run_test(GrContext* ctx, skiatest::Reporter* reporter) {
SkPath invPath = make_path(SkRect::MakeXYWH(0, 0, kBigSize, kBigSize),
kBigSize/2-1, SkPath::kInverseWinding_FillType);
SkPath path = make_path(SkRect::MakeXYWH(0, 0, kBigSize, kBigSize),
kPad, SkPath::kWinding_FillType);
GrStyle style(SkStrokeRec::kFill_InitStyle);
{
auto rtc = ctx->contextPriv().makeDeferredRenderTargetContext(
SkBackingFit::kApprox,
kBigSize/2+1, kBigSize/2+1,
kRGBA_8888_GrPixelConfig, nullptr);
rtc->clear(nullptr, GrColorPackRGBA(0x0, 0x0, 0x0, 0xFF),
GrRenderTargetContext::CanClearFullscreen::kYes);
GrPaint paint;
const GrColor4f color = { 1.0f, 0.0f, 0.0f, 1.0f };
auto fp = GrConstColorProcessor::Make(color, GrConstColorProcessor::InputMode::kIgnore);
paint.addColorFragmentProcessor(std::move(fp));
rtc->drawPath(GrNoClip(), std::move(paint), GrAA::kNo,
SkMatrix::I(), invPath, style);
rtc->prepareForExternalIO(0, nullptr);
}
{
auto rtc = ctx->contextPriv().makeDeferredRenderTargetContext(
SkBackingFit::kExact, kBigSize, kBigSize,
kRGBA_8888_GrPixelConfig, nullptr);
rtc->clear(nullptr, GrColorPackRGBA(0x0, 0x0, 0x0, 0xFF),
GrRenderTargetContext::CanClearFullscreen::kYes);
GrPaint paint;
const GrColor4f color = { 0.0f, 1.0f, 0.0f, 1.0f };
auto fp = GrConstColorProcessor::Make(color, GrConstColorProcessor::InputMode::kIgnore);
paint.addColorFragmentProcessor(std::move(fp));
rtc->drawPath(GrNoClip(), std::move(paint), GrAA::kNo,
SkMatrix::I(), path, style);
SkBitmap bm = read_back(rtc.get(), kBigSize, kBigSize);
bool correct = true;
for (int y = kBigSize/2+1; y < kBigSize-kPad-1 && correct; ++y) {
for (int x = kPad+1; x < kBigSize-kPad-1 && correct; ++x) {
correct = bm.getColor(x, y) == SK_ColorBLACK;
REPORTER_ASSERT(reporter, correct);
}
}
}
}
DEF_GPUTEST_FOR_CONTEXTS(GrDefaultPathRendererTest,
sk_gpu_test::GrContextFactory::IsRenderingContext,
reporter, ctxInfo, only_allow_default) {
GrContext* ctx = ctxInfo.grContext();
run_test(ctx, reporter);
}
|
