func (s *StencilOp) Mask(level int) *StencilOp {
gl.StencilFunc(gl.EQUAL, gl.Int(level), ^gl.Uint(0))
return s
}
func (s *StencilOp) Unmask(level int) *StencilOp {
gl.StencilFunc(gl.ALWAYS, gl.Int(level), ^gl.Uint(0))
return s
}
func AttachTexture(location gl.UniformLocation, textureEnum gl.Enum, target gl.Enum, texture gl.Texture) {
gl.ActiveTexture(textureEnum)
gl.BindTexture(target, texture)
gl.Uniform1i(location, gl.Int(textureEnum-gl.TEXTURE0))
}