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
|
/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrShaderVar_DEFINED
#define GrShaderVar_DEFINED
#include "GrTypesPriv.h"
#include "SkString.h"
class GrShaderVar {
public:
/**
* Early versions of GLSL have Varying and Attribute; those are later
* deprecated, but we still need to know whether a Varying variable
* should be treated as In or Out.
*
* TODO This really shouldn't live here, but until we have c++11, there is really no good way
* to write extensible enums. In reality, only none, out, in, inout, and uniform really
* make sense on this base class
*/
enum TypeModifier {
kNone_TypeModifier,
kOut_TypeModifier,
kIn_TypeModifier,
kInOut_TypeModifier,
kUniform_TypeModifier,
// GL Specific types below
kAttribute_TypeModifier,
kVaryingIn_TypeModifier,
kVaryingOut_TypeModifier
};
/**
* Defaults to a float with no precision specifier
*/
GrShaderVar()
: fType(kFloat_GrSLType)
, fTypeModifier(kNone_TypeModifier)
, fCount(kNonArray)
, fPrecision(kDefault_GrSLPrecision) {
}
GrShaderVar(const SkString& name, GrSLType type, int arrayCount = kNonArray,
GrSLPrecision precision = kDefault_GrSLPrecision)
: fType(type)
, fTypeModifier(kNone_TypeModifier)
, fName(name)
, fCount(arrayCount)
, fPrecision(precision) {
SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsFloatType(type));
SkASSERT(kVoid_GrSLType != type);
}
GrShaderVar(const char* name, GrSLType type, int arrayCount = kNonArray,
GrSLPrecision precision = kDefault_GrSLPrecision)
: fType(type)
, fTypeModifier(kNone_TypeModifier)
, fName(name)
, fCount(arrayCount)
, fPrecision(precision) {
SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsFloatType(type));
SkASSERT(kVoid_GrSLType != type);
}
GrShaderVar(const char* name, GrSLType type, TypeModifier typeModifier,
int arrayCount = kNonArray, GrSLPrecision precision = kDefault_GrSLPrecision)
: fType(type)
, fTypeModifier(typeModifier)
, fName(name)
, fCount(arrayCount)
, fPrecision(precision) {
SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsFloatType(type));
SkASSERT(kVoid_GrSLType != type);
}
/**
* Values for array count that have special meaning. We allow 1-sized arrays.
*/
enum {
kNonArray = 0, // not an array
kUnsizedArray = -1, // an unsized array (declared with [])
};
void set(GrSLType type,
const SkString& name,
TypeModifier typeModifier = kNone_TypeModifier,
GrSLPrecision precision = kDefault_GrSLPrecision,
int count = kNonArray) {
SkASSERT(kVoid_GrSLType != type);
SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsFloatType(type));
fType = type;
fTypeModifier = typeModifier;
fName = name;
fCount = count;
fPrecision = precision;
}
void set(GrSLType type,
const char* name,
TypeModifier typeModifier = kNone_TypeModifier,
GrSLPrecision precision = kDefault_GrSLPrecision,
int count = kNonArray) {
SkASSERT(kVoid_GrSLType != type);
SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsFloatType(type));
fType = type;
fTypeModifier = typeModifier;
fName = name;
fCount = count;
fPrecision = precision;
}
/**
* Is the var an array.
*/
bool isArray() const { return kNonArray != fCount; }
/**
* Is this an unsized array, (i.e. declared with []).
*/
bool isUnsizedArray() const { return kUnsizedArray == fCount; }
/**
* Get the array length of the var.
*/
int getArrayCount() const { return fCount; }
/**
* Set the array length of the var
*/
void setArrayCount(int count) { fCount = count; }
/**
* Set to be a non-array.
*/
void setNonArray() { fCount = kNonArray; }
/**
* Set to be an unsized array.
*/
void setUnsizedArray() { fCount = kUnsizedArray; }
/**
* Access the var name as a writable string
*/
SkString* accessName() { return &fName; }
/**
* Set the var name
*/
void setName(const SkString& n) { fName = n; }
void setName(const char* n) { fName = n; }
/**
* Get the var name.
*/
const SkString& getName() const { return fName; }
/**
* Shortcut for this->getName().c_str();
*/
const char* c_str() const { return this->getName().c_str(); }
/**
* Get the type of the var
*/
GrSLType getType() const { return fType; }
/**
* Set the type of the var
*/
void setType(GrSLType type) { fType = type; }
TypeModifier getTypeModifier() const { return fTypeModifier; }
void setTypeModifier(TypeModifier type) { fTypeModifier = type; }
/**
* Get the precision of the var
*/
GrSLPrecision getPrecision() const { return fPrecision; }
/**
* Set the precision of the var
*/
void setPrecision(GrSLPrecision p) { fPrecision = p; }
protected:
GrSLType fType;
TypeModifier fTypeModifier;
SkString fName;
int fCount;
GrSLPrecision fPrecision;
};
#endif
|
