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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrCCPathCache.h"
#include "GrShape.h"
#include "SkNx.h"
#include "ccpr/GrCCPathParser.h"
// The maximum number of cache entries we allow in our own cache.
static constexpr int kMaxCacheCount = 1 << 16;
GrCCPathCache::MaskTransform::MaskTransform(const SkMatrix& m, SkIVector* shift)
: fMatrix2x2{m.getScaleX(), m.getSkewX(), m.getSkewY(), m.getScaleY()} {
SkASSERT(!m.hasPerspective());
#ifndef SK_BUILD_FOR_ANDROID_FRAMEWORK
Sk2f translate = Sk2f(m.getTranslateX(), m.getTranslateY());
Sk2f floor = translate.floor();
(translate - floor).store(fSubpixelTranslate);
shift->set((int)floor[0], (int)floor[1]);
SkASSERT((float)shift->fX == floor[0]);
SkASSERT((float)shift->fY == floor[1]);
#endif
}
inline static bool fuzzy_equals(const GrCCPathCache::MaskTransform& a,
const GrCCPathCache::MaskTransform& b) {
if ((Sk4f::Load(a.fMatrix2x2) != Sk4f::Load(b.fMatrix2x2)).anyTrue()) {
return false;
}
#ifndef SK_BUILD_FOR_ANDROID_FRAMEWORK
if (((Sk2f::Load(a.fSubpixelTranslate) -
Sk2f::Load(b.fSubpixelTranslate)).abs() > 1.f/256).anyTrue()) {
return false;
}
#endif
return true;
}
inline GrCCPathCache::HashNode::HashNode(GrCCPathCache* cache, const MaskTransform& m,
const GrShape& shape) {
SkASSERT(shape.hasUnstyledKey());
int keyLength = 1 + shape.unstyledKeySize();
void* mem = ::operator new (sizeof(GrCCPathCacheEntry) + keyLength * sizeof(uint32_t));
fEntry = new (mem) GrCCPathCacheEntry(cache, m);
// The shape key is a variable-length footer to the entry allocation.
uint32_t* keyData = (uint32_t*)((char*)mem + sizeof(GrCCPathCacheEntry));
keyData[0] = keyLength - 1;
shape.writeUnstyledKey(&keyData[1]);
}
inline bool operator==(const GrCCPathCache::HashKey& key1, const GrCCPathCache::HashKey& key2) {
return key1.fData[0] == key2.fData[0] &&
!memcmp(&key1.fData[1], &key2.fData[1], key1.fData[0] * sizeof(uint32_t));
}
inline GrCCPathCache::HashKey GrCCPathCache::HashNode::GetKey(const GrCCPathCacheEntry* entry) {
// The shape key is a variable-length footer to the entry allocation.
return HashKey{(const uint32_t*)((const char*)entry + sizeof(GrCCPathCacheEntry))};
}
inline uint32_t GrCCPathCache::HashNode::Hash(HashKey key) {
return GrResourceKeyHash(&key.fData[1], key.fData[0]);
}
GrCCPathCache::HashNode::~HashNode() {
if (!fEntry) {
return;
}
// Finalize our eviction from the path cache.
SkASSERT(fEntry->fCacheWeakPtr);
fEntry->fCacheWeakPtr->fLRU.remove(fEntry);
fEntry->fCacheWeakPtr = nullptr;
if (GrCCAtlas::CachedAtlasInfo* info = fEntry->fCachedAtlasInfo.get()) {
// Mark our own pixels invalid in the cached atlas texture now that we have been evicted.
info->fNumInvalidatedPathPixels += fEntry->height() * fEntry->width();
if (!info->fIsPurgedFromResourceCache &&
info->fNumInvalidatedPathPixels >= info->fNumPathPixels / 2) {
// Too many invalidated pixels: purge the atlas texture from the resource cache.
SkMessageBus<GrUniqueKeyInvalidatedMessage>::Post(
GrUniqueKeyInvalidatedMessage(fEntry->fAtlasKey));
info->fIsPurgedFromResourceCache = true;
}
}
fEntry->unref();
}
GrCCPathCache::HashNode& GrCCPathCache::HashNode::operator=(HashNode&& node) {
this->~HashNode();
return *new (this) HashNode(std::move(node));
}
sk_sp<GrCCPathCacheEntry> GrCCPathCache::find(const GrShape& shape, const MaskTransform& m,
CreateIfAbsent createIfAbsent) {
if (!shape.hasUnstyledKey()) {
return nullptr;
}
int keyLength = 1 + shape.unstyledKeySize();
SkAutoSTMalloc<GrShape::kMaxKeyFromDataVerbCnt * 4, uint32_t> keyData(keyLength);
keyData[0] = keyLength - 1;
shape.writeUnstyledKey(&keyData[1]);
GrCCPathCacheEntry* entry = nullptr;
if (HashNode* node = fHashTable.find({keyData.get()})) {
entry = node->entry();
SkASSERT(this == entry->fCacheWeakPtr);
if (fuzzy_equals(m, entry->fMaskTransform)) {
++entry->fHitCount;
} else {
this->evict(entry); // The path was reused with an incompatible matrix.
entry = nullptr;
}
}
if (!entry) {
if (CreateIfAbsent::kNo == createIfAbsent) {
return nullptr;
}
if (fHashTable.count() >= kMaxCacheCount) {
this->evict(fLRU.tail()); // We've exceeded our limit.
}
entry = fHashTable.set(HashNode(this, m, shape))->entry();
SkASSERT(fHashTable.count() <= kMaxCacheCount);
} else {
fLRU.remove(entry); // Will be re-added at head.
}
fLRU.addToHead(entry);
return sk_ref_sp(entry);
}
void GrCCPathCache::evict(const GrCCPathCacheEntry* entry) {
SkASSERT(entry);
SkASSERT(this == entry->fCacheWeakPtr);
SkASSERT(fLRU.isInList(entry));
SkASSERT(fHashTable.find(HashNode::GetKey(entry))->entry() == entry);
fHashTable.remove(HashNode::GetKey(entry)); // ~HashNode() handles the rest.
}
void GrCCPathCacheEntry::initAsStashedAtlas(const GrUniqueKey& atlasKey,
const SkIVector& atlasOffset, const SkRect& devBounds,
const SkRect& devBounds45, const SkIRect& devIBounds,
const SkIVector& maskShift) {
SkASSERT(atlasKey.isValid());
SkASSERT(!fCurrFlushAtlas); // Otherwise we should reuse the atlas from last time.
fAtlasKey = atlasKey;
fAtlasOffset = atlasOffset + maskShift;
SkASSERT(!fCachedAtlasInfo); // Otherwise they should have reused the cached atlas instead.
float dx = (float)maskShift.fX, dy = (float)maskShift.fY;
fDevBounds = devBounds.makeOffset(-dx, -dy);
fDevBounds45 = GrCCPathProcessor::MakeOffset45(devBounds45, -dx, -dy);
fDevIBounds = devIBounds.makeOffset(-maskShift.fX, -maskShift.fY);
}
void GrCCPathCacheEntry::updateToCachedAtlas(const GrUniqueKey& atlasKey,
const SkIVector& newAtlasOffset,
sk_sp<GrCCAtlas::CachedAtlasInfo> info) {
SkASSERT(atlasKey.isValid());
SkASSERT(!fCurrFlushAtlas); // Otherwise we should reuse the atlas from last time.
fAtlasKey = atlasKey;
fAtlasOffset = newAtlasOffset;
SkASSERT(!fCachedAtlasInfo); // Otherwise we need to invalidate our pixels in the old info.
fCachedAtlasInfo = std::move(info);
fCachedAtlasInfo->fNumPathPixels += this->height() * this->width();
}
void GrCCPathCacheEntry::onChange() {
// Our corresponding path was modified or deleted. Evict ourselves.
if (fCacheWeakPtr) {
fCacheWeakPtr->evict(this);
}
}
|
