Rendering

function render(x::RenderObject)
	for elem in preRenderFunctions
		elem[1](elem[2]...)
	end

	glUseProgram(x.shader.id)
	render(x.uniforms, x.shader.id)
	glBindVertexArray(x.vertArray.id) 

	for elem in postRenderFunctions
		elem[1](elem[2]...)
	end
end
function render(attribute::String, cam::Camera, shaderId)
	 glUniformMatrix4fv(glGetUniformLocation(shaderId, attribute), 1, GL_FALSE, cam.viewProjMat)
end
function render(attribute::String, vector::Vector4, shaderId)
	 glUniform4f(glGetUniformLocation(shaderId, attribute), vector...)
end

function render(obj::Dict{String, Any}, shaderId)
  for elem in obj
    render(elem..., shaderId)
  end
end