ShaderNodeImpl.h

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//
// Copyright Contributors to the MaterialX Project
// SPDX-License-Identifier: Apache-2.0
//
 
#ifndef MATERIALX_SHADERNODEIMPL_H
#define MATERIALX_SHADERNODEIMPL_H
 
 
#include <MaterialXGenShader/Library.h>
 
#include <MaterialXGenShader/Export.h>
#include <MaterialXGenShader/TypeDesc.h>
#include <MaterialXCore/Util.h>
 
MATERIALX_NAMESPACE_BEGIN
 
class InterfaceElement;
class Node;
using ShaderGraphInputSocket = ShaderOutput;
 
using ShaderNodeImplPtr = shared_ptr<class ShaderNodeImpl>;
 
class MX_GENSHADER_API ShaderNodeImpl
{
  public:
    virtual ~ShaderNodeImpl() { }
 
    virtual const string& getTarget() const { return EMPTY_STRING; }
 
    virtual void initialize(const InterfaceElement& element, GenContext& context);
 
    const string& getName() const
    {
        return _name;
    }
 
    size_t getHash() const
    {
        return _hash;
    }
 
    virtual void addInputs(ShaderNode& node, GenContext& context) const;
 
    virtual void setValues(const Node& node, ShaderNode& shaderNode, GenContext& context) const;
 
    virtual void addClassification(ShaderNode& node) const;
 
    virtual void createVariables(const ShaderNode& node, GenContext& context, Shader& shader) const;
 
    virtual void emitFunctionDefinition(const ShaderNode& node, GenContext& context, ShaderStage& stage) const;
 
    virtual void emitFunctionCall(const ShaderNode& node, GenContext& context, ShaderStage& stage) const;
 
    virtual void emitOutputVariables(const ShaderNode& node, GenContext& context, ShaderStage& stage) const;
 
    virtual ShaderGraph* getGraph() const;
 
    virtual bool isEditable(const ShaderInput& /*input*/) const
    {
        return true;
    }
 
    virtual bool isEditable(const ShaderGraphInputSocket& /*input*/) const
    {
        return true;
    }
 
  protected:
    ShaderNodeImpl();
 
  protected:
    string _name;
    size_t _hash;
};
 
class MX_GENSHADER_API NopNode : public ShaderNodeImpl
{
  public:
    static ShaderNodeImplPtr create();
};
 
MATERIALX_NAMESPACE_END
 
#endif