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#ifndef SHADER_INCLUDED_H
#define SHADER_INCLUDED_H
#include <GL/glew.h>
#include <array>
#include <string>
class Camera;
class Transform;
class Shader {
public:
explicit Shader(const std::string & fileName);
virtual ~Shader();
void operator=(const Shader &) = delete;
Shader(const Shader &) = delete;
void Bind() const;
void Update(const Transform & transform, const Camera & camera) const;
private:
static constexpr unsigned int NUM_SHADERS = 2;
static constexpr unsigned int NUM_UNIFORMS = 3;
static void CheckShaderError(GLuint shader, GLuint flag, bool isProgram, const std::string & errorMessage);
static GLuint CreateShader(const GLchar * text, GLint len, unsigned int type);
GLuint m_program;
std::array<GLuint, NUM_SHADERS> m_shaders;
std::array<GLint, NUM_UNIFORMS> m_uniforms;
};
#endif
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