renderer

type Program struct {
	Id               uint32
	VertextShaderId  uint32
	FragmentShaderId uint32
}

type Renderer interface {
	Init(width, height int) error
	Viewport(x, y, w, h int32)
	ClearColor(r, g, b, a float32)
	CreateProgram(vshader, fshader string) (Program, error)
	ClearProgram(Program)
	LinkProgram(program uint32) error
	SetUniform(program uint32, name string, uniform shader.Uniform)
}