charcoal/OpenGLEngine/Sampler.h

#pragma once

#include "stdafx.h"

namespace charcoal
{
	class Sampler
	{
	public:
		enum class MinFilter : GLenum
		{
			NEAREST = GL_NEAREST,
			LINEAR = GL_LINEAR,
			NEAREST_MIPMAP_NEAREST = GL_NEAREST_MIPMAP_NEAREST,
			LINEAR_MIPMAP_NEAREST = GL_LINEAR_MIPMAP_NEAREST,
			NEAREST_MIPMAP_LINEAR = GL_NEAREST_MIPMAP_LINEAR,
			LINEAR_MIPMAP_LINEAR = GL_LINEAR_MIPMAP_LINEAR,
		};

		enum class MagFilter : GLenum
		{
			NEAREST = GL_NEAREST,
			LINEAR = GL_LINEAR,
		};

		enum class Wrap : GLenum
		{
			CLAMP_TO_EDGE = GL_CLAMP_TO_EDGE,
			MIRRORED_REPEAT = GL_MIRRORED_REPEAT,
			REPEAT = GL_REPEAT,
		};

		/*
		TODO:
		GL_TEXTURE_BORDER_COLOR, GL_TEXTURE_MIN_LOD, GL_TEXTURE_MAX_LOD,
		GL_TEXTURE_LOD_BIAS GL_TEXTURE_COMPARE_MODE, GL_TEXTURE_COMPARE_FUNC,
		GL_TEXTURE_WRAP_R
		*/

		Sampler(Wrap wrap_s, Wrap wrap_t, MagFilter magnification_filter, MinFilter minification_filter);
		~Sampler();

		void bind(GLuint texture_unit);

		GLuint get_sampler() const { return m_sampler; }

	private:
		GLuint m_sampler = 0;
	};
}