// Texture class
class Texture {
public:
	GLuint handle;
	Texture();
	virtual ~Texture();

	void loadData (int w, int h, int chan, GLenum format, void* data);
	void enable();
};

Texture::Texture() {
	handle = 0;
}

void Texture::loadData(int w, int h, int chan, GLenum format, void* data)
{
	glGenTextures(1, &handle);
	enable();

	// Bilinear filtering
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

	// Clamp: texture ends at edges
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);

	// Create the texture
	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
	glTexImage2D(GL_TEXTURE_2D, 0, chan, w, h, 0, format, GL_UNSIGNED_BYTE, data);
	

	//gluBuild2DMipmaps(GL_TEXTURE_2D, 3, w, h, format, GL_UNSIGNED_BYTE, data);
}

void Texture::enable()
{
	glBindTexture(GL_TEXTURE_2D, handle);
}

Texture::~Texture() {
	if (handle != 0)
		glDeleteTextures(1, &handle);
}