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* Functions for dealing with OGL's PITA state management
#pragma once
#include <memory>
#include <GL/glew.h>
#include <GL/gl.h>
// forward declarations
namespace vtk {
class Shader;
namespace vtk { namespace gls {
// set active shader
int setShader(const GLuint& shaderID);
// enable tracking of state changes
void setTracking(const bool& flag);
void setFlag(const GLenum& flag, const bool& newState);
void restoreState();