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
|
/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "core/cross/stream.h"
#include "core/cross/types.h"
#include "core/cross/gles2/utils_gles2.h"
#include "core/cross/gles2/gles2_headers.h"
// Required OpenGL extensions:
// GL_ARB_vertex_buffer_object
// GL_ARB_vertex_program
// GL_ARB_texture_compression
// GL_EXT_texture_compression_dxt1
namespace o3d {
typedef std::pair<String, int> SemanticMapElement;
typedef std::map<String, int> SemanticMap;
// The map batween the semantics on vertex program varying parameters names
// and vertex attribute indices under the VP_30 profile.
SemanticMapElement semantic_map_vp_30[] = {
SemanticMapElement("POSITION", 0),
SemanticMapElement("ATTR0", 0),
SemanticMapElement("BLENDWEIGHT", 1),
SemanticMapElement("ATTR1", 1),
SemanticMapElement("NORMAL", 2),
SemanticMapElement("ATTR2", 2),
SemanticMapElement("COLOR0", 3),
SemanticMapElement("DIFFUSE", 3),
SemanticMapElement("ATTR3", 3),
SemanticMapElement("COLOR1", 4),
SemanticMapElement("SPECULAR", 4),
SemanticMapElement("ATTR4", 4),
SemanticMapElement("TESSFACTOR", 5),
SemanticMapElement("FOGCOORD", 5),
SemanticMapElement("ATTR5", 5),
SemanticMapElement("PSIZE", 6),
SemanticMapElement("ATTR6", 6),
SemanticMapElement("BLENDINDICES", 7),
SemanticMapElement("ATTR7", 7),
SemanticMapElement("TEXCOORD0", 8),
SemanticMapElement("ATTR8", 8),
SemanticMapElement("TEXCOORD1", 9),
SemanticMapElement("ATTR9", 9),
SemanticMapElement("TEXCOORD2", 10),
SemanticMapElement("ATTR10", 10),
SemanticMapElement("TEXCOORD3", 11),
SemanticMapElement("ATTR11", 11),
SemanticMapElement("TEXCOORD4", 12),
SemanticMapElement("ATTR12", 12),
SemanticMapElement("TEXCOORD5", 13),
SemanticMapElement("ATTR13", 13),
SemanticMapElement("TEXCOORD6", 14),
SemanticMapElement("TANGENT", 14),
SemanticMapElement("ATTR14", 14),
SemanticMapElement("TEXCOORD7", 15),
SemanticMapElement("BINORMAL", 15),
SemanticMapElement("ATTR15", 15),
};
// The map batween the semantics on vertex program varying parameters names
// and vertex attribute indices under the VP_40 profile.
SemanticMapElement semantic_map_vp_40[] = {
SemanticMapElement("POSITION", 0),
SemanticMapElement("POSITION0", 0),
SemanticMapElement("ATTR0", 0),
SemanticMapElement("BLENDWEIGHT", 1),
SemanticMapElement("BLENDWEIGHT0", 1),
SemanticMapElement("ATTR1", 1),
SemanticMapElement("NORMAL", 2),
SemanticMapElement("NORMAL0", 2),
SemanticMapElement("ATTR2", 2),
SemanticMapElement("COLOR", 3),
SemanticMapElement("COLOR0", 3),
SemanticMapElement("DIFFUSE", 3),
SemanticMapElement("ATTR3", 3),
SemanticMapElement("COLOR1", 4),
SemanticMapElement("SPECULAR", 4),
SemanticMapElement("ATTR4", 4),
SemanticMapElement("TESSFACTOR", 5),
SemanticMapElement("FOGCOORD", 5),
SemanticMapElement("TESSFACTOR0", 5),
SemanticMapElement("FOGCOORD0", 5),
SemanticMapElement("ATTR5", 5),
SemanticMapElement("PSIZE", 6),
SemanticMapElement("PSIZE0", 6),
SemanticMapElement("ATTR6", 6),
SemanticMapElement("BLENDINDICES", 7),
SemanticMapElement("BLENDINDICES0", 7),
SemanticMapElement("ATTR7", 7),
SemanticMapElement("TEXCOORD", 8),
SemanticMapElement("TEXCOORD0", 8),
SemanticMapElement("ATTR8", 8),
SemanticMapElement("TEXCOORD1", 9),
SemanticMapElement("ATTR9", 9),
SemanticMapElement("TEXCOORD2", 10),
SemanticMapElement("ATTR10", 10),
SemanticMapElement("TEXCOORD3", 11),
SemanticMapElement("ATTR11", 11),
SemanticMapElement("TEXCOORD4", 12),
SemanticMapElement("ATTR12", 12),
SemanticMapElement("TEXCOORD5", 13),
SemanticMapElement("ATTR13", 13),
SemanticMapElement("TANGENT", 14),
SemanticMapElement("TANGENT0", 14),
SemanticMapElement("TEXCOORD6", 14),
SemanticMapElement("ATTR14", 14),
SemanticMapElement("BINORMAL", 15),
SemanticMapElement("BINORMAL0", 15),
SemanticMapElement("TEXCOORD7", 15),
SemanticMapElement("ATTR15", 15),
};
// The map batween OpenGL Vertex Attribute indexes under the VP_40 profile
// to Stream::Semantic identifiers (with index offsets).
struct AttrMapElement {
AttrMapElement(Stream::Semantic s, int i) : semantic(s), index(i) {}
Stream::Semantic semantic;
int index;
};
AttrMapElement attr_map_vp_40[] = {
AttrMapElement(Stream::POSITION, 0),
AttrMapElement(Stream::UNKNOWN_SEMANTIC, 0),
AttrMapElement(Stream::NORMAL, 0),
AttrMapElement(Stream::COLOR, 0),
AttrMapElement(Stream::COLOR, 1),
AttrMapElement(Stream::UNKNOWN_SEMANTIC, 0),
AttrMapElement(Stream::UNKNOWN_SEMANTIC, 0),
AttrMapElement(Stream::UNKNOWN_SEMANTIC, 0),
AttrMapElement(Stream::TEXCOORD, 0),
AttrMapElement(Stream::TEXCOORD, 1),
AttrMapElement(Stream::TEXCOORD, 2),
AttrMapElement(Stream::TEXCOORD, 3),
AttrMapElement(Stream::TEXCOORD, 4),
AttrMapElement(Stream::TEXCOORD, 5),
AttrMapElement(Stream::TANGENT, 0),
AttrMapElement(Stream::BINORMAL, 0),
};
// TODO: make this choice a runtime decision in RendererGL
// initialisation.
static SemanticMap semantic_map(semantic_map_vp_40,
semantic_map_vp_40 +
sizeof(semantic_map_vp_40) /
sizeof(SemanticMapElement) );
// Converts a semantic string to an OpenGL vertex attribute number using the
// standard VP_40 shader semantic mappings. If the semantic is not
// recognised, it returns an index of -1.
int SemanticNameToGLVertexAttribute(const char* semantic) {
SemanticMap::const_iterator i = semantic_map.find(semantic);
if (i == semantic_map.end()) {
return -1;
}
return i->second;
}
// Given a vertex attribute stream, convert it to a Stream::Semantic number
// and index. This is an imprecise operation.
Stream::Semantic GLVertexAttributeToStream(const unsigned int attr,
int *index) {
// kMaxAttrIndex is available from:
// glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &max_vertex_attribs);
//
// TODO: make this a runtime provided value discovered during
// Renderer creation.
const unsigned int kMaxAttrIndex = 15u;
if (attr > kMaxAttrIndex) {
//TODO: Figure out how to get errors out of here to the client.
DLOG(ERROR) << "Invalid vertex attribute index.";
*index = 0;
return Stream::UNKNOWN_SEMANTIC;
}
*index = attr_map_vp_40[attr].index;
return attr_map_vp_40[attr].semantic;
}
#ifdef OS_WIN
// Given a CGcontext object, check to see if any errors have occurred since
// the last Cg API call, and report the message and any compiler errors (if
// necessary).
inline void CheckForCgError(const String& logmessage, CGcontext cg_context) {
CGerror error = CG_NO_ERROR;
const char *error_string = cgGetLastErrorString(&error);
if (error == CG_NO_ERROR) {
return;
} else {
DLOG(ERROR) << logmessage << ": " << error_string;
if (error == CG_COMPILER_ERROR) {
DLOG(ERROR) << "Compiler message:\n" << cgGetLastListing(cg_context);
}
}
}
#endif
} // namespace o3d
|
