-
Notifications
You must be signed in to change notification settings - Fork 327
/
vertex.go
64 lines (57 loc) · 1.68 KB
/
vertex.go
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
// Copyright (C) 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package vertex
import (
"context"
"github.com/google/gapid/core/stream"
)
type semanticKey struct {
typ Semantic_Type
index uint32
}
func (s *Semantic) key() semanticKey {
if s == nil {
return semanticKey{}
}
return semanticKey{s.Type, s.Index}
}
// ConvertTo converts the vertex buffer to the requested format.
func (s *Buffer) ConvertTo(ctx context.Context, f *BufferFormat) (*Buffer, error) {
streams := make(map[semanticKey]*Stream, len(s.Streams))
for _, s := range s.Streams {
streams[s.Semantic.key()] = s
}
out := &Buffer{Streams: make([]*Stream, 0, len(f.Streams))}
for _, f := range f.Streams {
if s, ok := streams[f.Semantic.key()]; ok {
s, err := s.ConvertTo(ctx, f.Format)
if err != nil {
return nil, err
}
out.Streams = append(out.Streams, s)
}
}
return out, nil
}
// ConvertTo converts the vertex stream to the requested format.
func (s *Stream) ConvertTo(ctx context.Context, f *stream.Format) (*Stream, error) {
data, err := stream.Convert(f, s.Format, s.Data)
if err != nil {
return nil, err
}
out := *s
out.Format = f
out.Data = data
return &out, nil
}