1 // Copyright 2021 The SwiftShader Authors. All Rights Reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "SpirvBinary.hpp"
16
17 namespace sw {
18
19 std::atomic<uint32_t> SpirvBinary::serialCounter(1); // Start at 1, 0 is invalid shader.
20
SpirvBinary()21 SpirvBinary::SpirvBinary()
22 : identifier(serialCounter++)
23 {}
24
SpirvBinary(const uint32_t * binary,uint32_t wordCount)25 SpirvBinary::SpirvBinary(const uint32_t *binary, uint32_t wordCount)
26 : std::vector<uint32_t>(binary, binary + wordCount)
27 , identifier(serialCounter++)
28 {
29 }
30
mapOptimizedIdentifier(const SpirvBinary & unoptimized)31 void SpirvBinary::mapOptimizedIdentifier(const SpirvBinary &unoptimized)
32 {
33 // The bitwise NOT accomplishes a 1-to-1 mapping of the identifiers,
34 // while avoiding clashes with previous or future serial IDs.
35 identifier = ~unoptimized.identifier;
36 }
37
38 } // namespace sw