handmade/include/shader.h

#pragma once

#include <map>
#include <string>

#include <GL/glew.h>

#include <glm/glm.hpp>
#include <glm/gtc/type_ptr.hpp>

class ShaderProgram
{
	bool mUniformLocationsNeedRefresh;
	std::map<const std::string, GLint> UniformLocationCache;
	static GLint my_checkCompileSuccess (const GLuint, const GLenum);
	public:
		GLuint ID;
		ShaderProgram (const std::string&, const std::string&, const std::string&);
		GLint getCachedLoc (const std::string&);
		void RefreshUniformLocations (void);
		void Use   (void);
		void Bool  (const std::string&, const bool&);
		void Float (const std::string&, const float&);
		void Int   (const std::string&, const int&);
		void Vec2  (const std::string&, const glm::vec2&);
		void Vec3  (const std::string&, const glm::vec3&);
		void Vec4  (const std::string&, const glm::vec4&);
		void Mat2  (const std::string&, const glm::mat2&);
		void Mat3  (const std::string&, const glm::mat3&);
		void Mat4  (const std::string&, const glm::mat4&);

		GLuint CompileShaderBuffer (const std::string&, const GLenum);
		GLuint Compile3ShaderBuffers (const std::string&, const std::string&, const std::string&);
		GLuint CompileShaderPath (const std::string&, const GLenum);
		GLint LinkProgram (void);
};