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/*!
* Copyright (c) 2017 by Contributors
* \file codegen_opengl.h
* \brief Generate OpenGL device code.
*/
#ifndef TVM_CODEGEN_CODEGEN_OPENGL_H_
#define TVM_CODEGEN_CODEGEN_OPENGL_H_
#include <tvm/codegen.h>
#include <tvm/packed_func_ext.h>
#include <string>
#include "codegen_c.h"
#include "../runtime/opengl/opengl_module.h"
namespace tvm {
namespace codegen {
class CodeGenOpenGL final : public CodeGenC {
public:
CodeGenOpenGL();
void AddFunction(LoweredFunc f);
std::unordered_map<std::string, runtime::OpenGLShader> Finish();
void InitFuncState(LoweredFunc f) final;
void BindThreadIndex(const IterVar& iv) final;
void VisitStmt_(const Store* op) final;
std::string TexelFetch(const Variable* buffer, Expr index);
std::string GetBufferRef(Type t, const Variable* buffer, Expr index) final;
void PrintType(Type t, std::ostream& os) final; // NOLINT(*)
// Codegen for immediate values
void VisitExpr_(const IntImm* op, std::ostream& os) final; // NOLINT(*)
void VisitExpr_(const UIntImm* op, std::ostream& os) final; // NOLINT(*)
void VisitExpr_(const FloatImm* op, std::ostream& os) final; // NOLINT(*)
void VisitExpr_(const StringImm* op, std::ostream& os) final; // NOLINT(*)
// Match glsl_texture_store Call.
void VisitStmt_(const Evaluate* op) final; // NOLINT(*)
private:
const Variable* output_{nullptr};
std::unordered_set<const Variable*> inputs_;
const Variable* output_iter_var_{nullptr};
std::unordered_map<std::string, runtime::OpenGLShader> shaders_;
std::string thread_extent_var_;
};
} // namespace codegen
} // namespace tvm
#endif // TVM_CODEGEN_CODEGEN_OPENGL_H_