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// Copyright 2020 The Tint Authors.
//
// 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.
#ifndef SRC_AST_BUILTIN_H_
#define SRC_AST_BUILTIN_H_
#include <ostream>
namespace tint {
namespace ast {
/// The builtin identifiers
enum class Builtin {
kNone = -1,
kPosition,
kVertexIndex,
kInstanceIndex,
kFrontFacing,
kFragDepth,
kLocalInvocationId,
kLocalInvocationIndex,
kGlobalInvocationId,
kWorkgroupId,
kNumWorkgroups,
kSampleIndex,
kSampleMask,
// Below are not currently WGSL builtins, but are included in this enum as
// they are used by certain backends.
kPointSize,
};
/// @param out the std::ostream to write to
/// @param builtin the Builtin
/// @return the std::ostream so calls can be chained
std::ostream& operator<<(std::ostream& out, Builtin builtin);
} // namespace ast
} // namespace tint
#endif // SRC_AST_BUILTIN_H_