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
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
//
// Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// D3DConstantTable.cpp: Implements the D3DConstantTable class which parses
// information about constants from the CTAB comment in a D3D shader blob.
// Restructures the constant table as a hierarchy of constants in the same
// way as D3DX.
#include "libGLESv2/D3DConstantTable.h"
#include <d3d9.h>
#include <d3d9types.h>
#include <windows.h>
#include <mmsystem.h>
#include "libGLESv2/BinaryStream.h"
const static int SHADER_VERSION_MASK = D3DVS_VERSION(0, 0);
const static int FOURCC_CTAB = MAKEFOURCC('C','T','A','B');
namespace gl
{
// These structs and constants correspond to the format of the constant table in a shader binary.
// They match the corresponding structures in d3dx9shader.h.
namespace ctab
{
struct ConstantTable
{
DWORD size;
DWORD creator;
DWORD version;
DWORD constants;
DWORD constantInfos;
DWORD flags;
DWORD target;
};
struct ConstantInfo
{
DWORD name;
WORD registerSet;
WORD registerIndex;
WORD registerCount;
WORD reserved;
DWORD typeInfo;
DWORD defaultValue;
};
struct TypeInfo
{
WORD typeClass;
WORD type;
WORD rows;
WORD columns;
WORD elements;
WORD structMembers;
DWORD structMemberInfos;
};
struct StructMemberInfo
{
DWORD name;
DWORD typeInfo;
};
}
D3DConstant::D3DConstant(const char *base, const ctab::ConstantInfo *constantInfo)
{
const ctab::TypeInfo *typeInfo = reinterpret_cast<const ctab::TypeInfo*>(base + constantInfo->typeInfo);
name = base + constantInfo->name;
registerSet = static_cast<RegisterSet>(constantInfo->registerSet);
registerIndex = constantInfo->registerIndex;
registerCount = constantInfo->registerCount;
typeClass = static_cast<Class>(typeInfo->typeClass);
type = static_cast<Type>(typeInfo->type);
rows = typeInfo->rows;
columns = typeInfo->columns;
elements = typeInfo->elements;
if (typeClass == CLASS_STRUCT)
{
addStructMembers(base, registerSet, registerIndex, typeInfo);
}
}
D3DConstant::D3DConstant(const char *base, RegisterSet registerSet, unsigned registerIndex, const ctab::StructMemberInfo *memberInfo)
: registerSet(registerSet), registerIndex(registerIndex)
{
const ctab::TypeInfo *typeInfo = reinterpret_cast<const ctab::TypeInfo*>(base + memberInfo->typeInfo);
name = base + memberInfo->name;
registerCount = typeInfo->rows * typeInfo->elements;
typeClass = static_cast<Class>(typeInfo->typeClass);
type = static_cast<Type>(typeInfo->type);
rows = typeInfo->rows;
columns = typeInfo->columns;
elements = typeInfo->elements;
if (typeClass == CLASS_STRUCT)
{
registerCount = addStructMembers(base, registerSet, registerIndex, typeInfo);
}
}
D3DConstant::~D3DConstant()
{
for (size_t j = 0; j < structMembers.size(); ++j)
{
for (size_t i = 0; i < structMembers[j].size(); ++i)
{
delete structMembers[j][i];
}
}
}
unsigned D3DConstant::addStructMembers(const char *base, RegisterSet registerSet, unsigned registerIndex, const ctab::TypeInfo *typeInfo)
{
const ctab::StructMemberInfo *memberInfos = reinterpret_cast<const ctab::StructMemberInfo*>(
base + typeInfo->structMemberInfos);
unsigned memberIndex = registerIndex;
structMembers.resize(elements);
for (unsigned j = 0; j < elements; ++j)
{
structMembers[j].resize(typeInfo->structMembers);
for (unsigned i = 0; i < typeInfo->structMembers; ++i)
{
const ctab::TypeInfo *memberTypeInfo = reinterpret_cast<const ctab::TypeInfo*>(
base + memberInfos[i].typeInfo);
D3DConstant *member = new D3DConstant(base, registerSet, memberIndex, memberInfos + i);
memberIndex += member->registerCount;
structMembers[j][i] = member;
}
}
return memberIndex - registerIndex;
}
D3DConstantTable::D3DConstantTable(void *blob, size_t size) : mError(false)
{
BinaryInputStream stream(blob, size);
int version;
stream.read(&version);
if ((version & SHADER_VERSION_MASK) != SHADER_VERSION_MASK)
{
mError = true;
return;
}
const ctab::ConstantTable* constantTable = NULL;
while (!stream.error())
{
int token;
stream.read(&token);
if ((token & D3DSI_OPCODE_MASK) == D3DSIO_COMMENT)
{
size_t length = ((token & D3DSI_COMMENTSIZE_MASK) >> D3DSI_COMMENTSIZE_SHIFT) * sizeof(DWORD);
int fourcc;
stream.read(&fourcc);
if (fourcc == FOURCC_CTAB)
{
constantTable = reinterpret_cast<const ctab::ConstantTable*>(static_cast<const char*>(blob) + stream.offset());
break;
}
stream.skip(length - sizeof(fourcc));
}
else if (token == D3DSIO_END)
{
break;
}
}
mError = !constantTable || stream.error();
if (mError)
{
return;
}
const char *base = reinterpret_cast<const char*>(constantTable);
mConstants.resize(constantTable->constants);
const ctab::ConstantInfo *constantInfos =
reinterpret_cast<const ctab::ConstantInfo*>(base + constantTable->constantInfos);
for (size_t i = 0; i < constantTable->constants; ++i)
{
mConstants[i] = new D3DConstant(base, constantInfos + i);
}
}
D3DConstantTable::~D3DConstantTable()
{
for (size_t i = 0; i < mConstants.size(); ++i)
{
delete mConstants[i];
}
}
const D3DConstant *D3DConstantTable::getConstant(unsigned index) const
{
return mConstants[index];
}
const D3DConstant *D3DConstantTable::getConstantByName(const char *name) const
{
for (size_t i = 0; i < mConstants.size(); ++i)
{
const D3DConstant *constant = getConstant(i);
if (constant->name == name)
{
return constant;
}
}
return NULL;
}
}
|
