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/*=========================================================================
Program: Visualization Toolkit
Module: vtkShaderCodeLibrary.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkShaderCodeLibrary.h"
#include "vtkObjectFactory.h"
#include "vtkShaderCodeLibraryMacro.h"
#ifndef vtkShaderCodeLibraryMacro
#define vtkShaderCodeLibraryMacro(name) \
vtkGenericWarningMacro("VTK is not built with shading support." \
"No shaders are available.");
#endif
#include <map>
#include <string>
#include <vtksys/SystemTools.hxx>
class vtkShaderCodeLibrary::vtkInternal
{
public:
std::map<std::string, std::string> Codes;
const char* GetShaderCode(const char* name)
{
std::map<std::string, std::string>::iterator iter;
iter = this->Codes.find(name);
if (iter != this->Codes.end())
{
return iter->second.c_str();
}
return NULL;
}
};
vtkShaderCodeLibrary::vtkInternal* vtkShaderCodeLibrary::Internal = 0;;
vtkShaderCodeLibrary::vtkInternalCleanup vtkShaderCodeLibrary::Cleanup;
vtkShaderCodeLibrary::vtkInternalCleanup::~vtkInternalCleanup()
{
delete vtkShaderCodeLibrary::Internal;
vtkShaderCodeLibrary::Internal = 0;
}
vtkStandardNewMacro(vtkShaderCodeLibrary);
//-----------------------------------------------------------------------------
vtkShaderCodeLibrary::vtkShaderCodeLibrary()
{
}
//-----------------------------------------------------------------------------
vtkShaderCodeLibrary::~vtkShaderCodeLibrary()
{
}
//-----------------------------------------------------------------------------
char* vtkShaderCodeLibrary::GetShaderCode(const char* name)
{
if (!name || !*name)
{
return 0;
}
if (vtkShaderCodeLibrary::Internal)
{
const char* code = vtkShaderCodeLibrary::Internal->GetShaderCode(name);
if (code)
{
return vtksys::SystemTools::DuplicateString(code);
}
}
// CMake sets VTK_SHADER_CODE_LIBRARY_CHUNK to be the
// chunk of code that does name comparisons and
// call appropriate method from the vtk*ShaderLibrary.
vtkShaderCodeLibraryMacro(name)
return 0;
}
//-----------------------------------------------------------------------------
const char** vtkShaderCodeLibrary::GetListOfShaderCodeNames()
{
return ::ListOfShaderNames;
}
//-----------------------------------------------------------------------------
void vtkShaderCodeLibrary::RegisterShaderCode(const char* name, const char* code)
{
if (name && code)
{
if (!vtkShaderCodeLibrary::Internal)
{
vtkShaderCodeLibrary::Internal = new vtkShaderCodeLibrary::vtkInternal();
}
vtkShaderCodeLibrary::Internal->Codes[name] = code;
}
}
//-----------------------------------------------------------------------------
void vtkShaderCodeLibrary::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
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