1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 */ 19 20 /*! 21 * \file codegen_opengl.h 22 * \brief Generate OpenGL device code. 23 */ 24 #ifndef TVM_CODEGEN_CODEGEN_OPENGL_H_ 25 #define TVM_CODEGEN_CODEGEN_OPENGL_H_ 26 27 #include <tvm/codegen.h> 28 #include <tvm/packed_func_ext.h> 29 #include <string> 30 #include <unordered_set> 31 #include <unordered_map> 32 #include "codegen_c.h" 33 #include "../runtime/opengl/opengl_module.h" 34 35 namespace tvm { 36 namespace codegen { 37 38 class CodeGenOpenGL final : public CodeGenC { 39 public: 40 CodeGenOpenGL(); 41 void AddFunction(LoweredFunc f); 42 std::unordered_map<std::string, runtime::OpenGLShader> Finish(); 43 44 void InitFuncState(LoweredFunc f) final; 45 void BindThreadIndex(const IterVar& iv) final; 46 void VisitStmt_(const Store* op) final; 47 std::string TexelFetch(const Variable* buffer, Expr index); 48 std::string GetBufferRef(Type t, const Variable* buffer, Expr index) final; 49 void PrintType(Type t, std::ostream& os) final; // NOLINT(*) 50 51 // Codegen for immediate values 52 void VisitExpr_(const IntImm* op, std::ostream& os) final; // NOLINT(*) 53 void VisitExpr_(const UIntImm* op, std::ostream& os) final; // NOLINT(*) 54 void VisitExpr_(const FloatImm* op, std::ostream& os) final; // NOLINT(*) 55 void VisitExpr_(const StringImm* op, std::ostream& os) final; // NOLINT(*) 56 57 // Match glsl_texture_store Call. 58 void VisitStmt_(const Evaluate* op) final; // NOLINT(*) 59 60 private: 61 const Variable* output_{nullptr}; 62 std::unordered_set<const Variable*> inputs_; 63 const Variable* output_iter_var_{nullptr}; 64 std::unordered_map<std::string, runtime::OpenGLShader> shaders_; 65 std::string thread_extent_var_; 66 }; 67 68 } // namespace codegen 69 } // namespace tvm 70 71 #endif // TVM_CODEGEN_CODEGEN_OPENGL_H_ 72