1/*
2 * Copyright (C) 2019 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#if ENABLE(WEBGPU)
29
30#include "WHLSLBaseSemantic.h"
31#include "WHLSLLexer.h"
32#include <wtf/Optional.h>
33
34namespace WebCore {
35
36namespace WHLSL {
37
38namespace AST {
39
40class BuiltInSemantic : public BaseSemantic {
41public:
42 enum class Variable : uint8_t {
43 SVInstanceID,
44 SVVertexID,
45 PSize,
46 SVPosition,
47 SVIsFrontFace,
48 SVSampleIndex,
49 SVInnerCoverage,
50 SVTarget,
51 SVDepth,
52 SVCoverage,
53 SVDispatchThreadID,
54 SVGroupID,
55 SVGroupIndex,
56 SVGroupThreadID
57 };
58
59 BuiltInSemantic(Lexer::Token&& origin, Variable variable, Optional<unsigned>&& targetIndex = WTF::nullopt)
60 : BaseSemantic(WTFMove(origin))
61 , m_variable(variable)
62 , m_targetIndex(WTFMove(targetIndex))
63 {
64 }
65
66 virtual ~BuiltInSemantic() = default;
67
68 BuiltInSemantic(const BuiltInSemantic&) = delete;
69 BuiltInSemantic(BuiltInSemantic&&) = default;
70
71 Variable variable() const { return m_variable; }
72 Optional<unsigned>& targetIndex() { return m_targetIndex; }
73
74 bool operator==(const BuiltInSemantic& other) const
75 {
76 return m_variable == other.m_variable && m_targetIndex == other.m_targetIndex;
77 }
78
79 bool operator!=(const BuiltInSemantic& other) const
80 {
81 return !(*this == other);
82 }
83
84 bool isAcceptableType(const UnnamedType&, const Intrinsics&) const override;
85 bool isAcceptableForShaderItemDirection(ShaderItemDirection, const Optional<EntryPointType>&) const override;
86
87private:
88 Variable m_variable;
89 Optional<unsigned> m_targetIndex;
90};
91
92} // namespace AST
93
94}
95
96}
97
98#endif
99