1 // Copyright 2020 The Tint Authors. 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 #ifndef SRC_AST_BUILTIN_H_ 16 #define SRC_AST_BUILTIN_H_ 17 18 #include <ostream> 19 20 namespace tint { 21 namespace ast { 22 23 /// The builtin identifiers 24 enum class Builtin { 25 kNone = -1, 26 kPosition, 27 kVertexIndex, 28 kInstanceIndex, 29 kFrontFacing, 30 kFragDepth, 31 kLocalInvocationId, 32 kLocalInvocationIndex, 33 kGlobalInvocationId, 34 kWorkgroupId, 35 kNumWorkgroups, 36 kSampleIndex, 37 kSampleMask, 38 39 // Below are not currently WGSL builtins, but are included in this enum as 40 // they are used by certain backends. 41 kPointSize, 42 }; 43 44 /// @param out the std::ostream to write to 45 /// @param builtin the Builtin 46 /// @return the std::ostream so calls can be chained 47 std::ostream& operator<<(std::ostream& out, Builtin builtin); 48 49 } // namespace ast 50 } // namespace tint 51 52 #endif // SRC_AST_BUILTIN_H_ 53