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#ifndef VERTEXPROGRAM_H
#define VERTEXPROGRAM_H
#include "basicshaderprogram.h"
class Document;

class VertexProgram : public AbstractBasicShaderProgram
{
public:
	enum FragmentStyle
	{
		Normal,
		Id
	};
	struct Vertex
	{
		glm::vec3 position;
		glm::vec3 color;
	};
	VertexProgram(QObject* parent = nullptr);
	void build(const Document* document);
protected:
	const char* vertexShaderSource() const override;
	const char* fragmentShaderSource() const override;
	const void* vertexData() const override;
	int vertexSize() const override;
	int vertexCount() const override;
	void setupVertexArrays() override;
	GLenum drawMode() const override;
	QOpenGLBuffer::UsagePattern usagePattern() const override;
	void setFragmentStyle(FragmentStyle newFragmentStyle);
private:
	std::vector<Vertex> data;
	FragmentStyle fragmentStyle = Normal;
};

#endif // VERTEXPROGRAM_H