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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrAtlasTextOp_DEFINED
#define GrAtlasTextOp_DEFINED
#include "ops/GrMeshDrawOp.h"
#include "text/GrAtlasTextContext.h"
#include "text/GrDistanceFieldAdjustTable.h"
class GrAtlasTextOp final : public GrLegacyMeshDrawOp {
public:
DEFINE_OP_CLASS_ID
~GrAtlasTextOp() override {
for (int i = 0; i < fGeoCount; i++) {
fGeoData[i].fBlob->unref();
}
}
static const int kVerticesPerGlyph = GrAtlasTextBlob::kVerticesPerGlyph;
static const int kIndicesPerGlyph = 6;
typedef GrAtlasTextBlob Blob;
struct Geometry {
SkMatrix fViewMatrix;
Blob* fBlob;
SkScalar fX;
SkScalar fY;
int fRun;
int fSubRun;
GrColor fColor;
};
static std::unique_ptr<GrAtlasTextOp> MakeBitmap(GrMaskFormat maskFormat, int glyphCount,
GrAtlasGlyphCache* fontCache) {
std::unique_ptr<GrAtlasTextOp> op(new GrAtlasTextOp);
op->fFontCache = fontCache;
switch (maskFormat) {
case kA8_GrMaskFormat:
op->fMaskType = kGrayscaleCoverageMask_MaskType;
break;
case kA565_GrMaskFormat:
op->fMaskType = kLCDCoverageMask_MaskType;
break;
case kARGB_GrMaskFormat:
op->fMaskType = kColorBitmapMask_MaskType;
break;
}
op->fNumGlyphs = glyphCount;
op->fGeoCount = 1;
op->fLuminanceColor = 0;
op->fFontCache = fontCache;
return op;
}
static std::unique_ptr<GrAtlasTextOp> MakeDistanceField(
int glyphCount, GrAtlasGlyphCache* fontCache,
const GrDistanceFieldAdjustTable* distanceAdjustTable,
bool useGammaCorrectDistanceTable, SkColor luminanceColor, bool isLCD, bool useBGR,
bool isAntiAliased) {
std::unique_ptr<GrAtlasTextOp> op(new GrAtlasTextOp);
op->fFontCache = fontCache;
op->fMaskType = !isAntiAliased ? kAliasedDistanceField_MaskType
: isLCD ? (useBGR ? kLCDBGRDistanceField_MaskType
: kLCDDistanceField_MaskType)
: kGrayscaleDistanceField_MaskType;
op->fDistanceAdjustTable.reset(SkRef(distanceAdjustTable));
op->fUseGammaCorrectDistanceTable = useGammaCorrectDistanceTable;
op->fLuminanceColor = luminanceColor;
op->fNumGlyphs = glyphCount;
op->fGeoCount = 1;
return op;
}
// To avoid even the initial copy of the struct, we have a getter for the first item which
// is used to seed the op with its initial geometry. After seeding, the client should call
// init() so the op can initialize itself
Geometry& geometry() { return fGeoData[0]; }
void init() {
const Geometry& geo = fGeoData[0];
fColor = geo.fColor;
SkRect bounds;
geo.fBlob->computeSubRunBounds(&bounds, geo.fRun, geo.fSubRun, geo.fViewMatrix, geo.fX,
geo.fY);
// We don't have tight bounds on the glyph paths in device space. For the purposes of bounds
// we treat this as a set of non-AA rects rendered with a texture.
this->setBounds(bounds, HasAABloat::kNo, IsZeroArea::kNo);
}
const char* name() const override { return "AtlasTextOp"; }
SkString dumpInfo() const override;
private:
void getProcessorAnalysisInputs(GrProcessorAnalysisColor*,
GrProcessorAnalysisCoverage*) const override;
void applyPipelineOptimizations(const PipelineOptimizations&) override;
struct FlushInfo {
sk_sp<const GrBuffer> fVertexBuffer;
sk_sp<const GrBuffer> fIndexBuffer;
sk_sp<GrGeometryProcessor> fGeometryProcessor;
int fGlyphsToFlush;
int fVertexOffset;
};
void onPrepareDraws(Target* target) const override;
GrAtlasTextOp() : INHERITED(ClassID()) {} // initialized in factory functions.
GrMaskFormat maskFormat() const {
switch (fMaskType) {
case kLCDCoverageMask_MaskType:
return kA565_GrMaskFormat;
case kColorBitmapMask_MaskType:
return kARGB_GrMaskFormat;
case kGrayscaleCoverageMask_MaskType:
case kAliasedDistanceField_MaskType:
case kGrayscaleDistanceField_MaskType:
case kLCDDistanceField_MaskType:
case kLCDBGRDistanceField_MaskType:
return kA8_GrMaskFormat;
}
return kA8_GrMaskFormat; // suppress warning
}
bool usesDistanceFields() const {
return kAliasedDistanceField_MaskType == fMaskType ||
kGrayscaleDistanceField_MaskType == fMaskType ||
kLCDDistanceField_MaskType == fMaskType ||
kLCDBGRDistanceField_MaskType == fMaskType;
}
bool isLCD() const {
return kLCDCoverageMask_MaskType == fMaskType ||
kLCDDistanceField_MaskType == fMaskType ||
kLCDBGRDistanceField_MaskType == fMaskType;
}
inline void flush(GrLegacyMeshDrawOp::Target* target, FlushInfo* flushInfo) const;
GrColor color() const { return fColor; }
const SkMatrix& viewMatrix() const { return fGeoData[0].fViewMatrix; }
bool usesLocalCoords() const { return fUsesLocalCoords; }
int numGlyphs() const { return fNumGlyphs; }
bool onCombineIfPossible(GrOp* t, const GrCaps& caps) override;
// TODO just use class params
sk_sp<GrGeometryProcessor> setupDfProcessor(const SkMatrix& viewMatrix, SkColor luminanceColor,
GrColor color, sk_sp<GrTextureProxy> proxy) const;
GrColor fColor;
bool fUsesLocalCoords;
int fNumGlyphs;
// The minimum number of Geometry we will try to allocate.
enum { kMinGeometryAllocated = 4 };
SkAutoSTMalloc<kMinGeometryAllocated, Geometry> fGeoData;
int fGeoCount;
enum MaskType {
kGrayscaleCoverageMask_MaskType,
kLCDCoverageMask_MaskType,
kColorBitmapMask_MaskType,
kAliasedDistanceField_MaskType,
kGrayscaleDistanceField_MaskType,
kLCDDistanceField_MaskType,
kLCDBGRDistanceField_MaskType,
} fMaskType;
GrAtlasGlyphCache* fFontCache;
// Distance field properties
sk_sp<const GrDistanceFieldAdjustTable> fDistanceAdjustTable;
SkColor fLuminanceColor;
bool fUseGammaCorrectDistanceTable;
friend class GrBlobRegenHelper; // Needs to trigger flushes
typedef GrLegacyMeshDrawOp INHERITED;
};
/*
* A simple helper class to abstract the interface GrAtlasTextBlob needs to regenerate itself.
* It'd be nicer if this was nested, but we need to forward declare it in GrAtlasTextBlob.h
*/
class GrBlobRegenHelper {
public:
GrBlobRegenHelper(const GrAtlasTextOp* op, GrLegacyMeshDrawOp::Target* target,
GrAtlasTextOp::FlushInfo* flushInfo)
: fOp(op), fTarget(target), fFlushInfo(flushInfo) {}
void flush();
void incGlyphCount(int glyphCount = 1) { fFlushInfo->fGlyphsToFlush += glyphCount; }
private:
const GrAtlasTextOp* fOp;
GrLegacyMeshDrawOp::Target* fTarget;
GrAtlasTextOp::FlushInfo* fFlushInfo;
};
#endif
|
