#[derive(Debug, Clone)]
pub struct FloatDotsTexture;
impl FloatDotsTexture {
    pub fn evaluate(&self, _ctx: &TextureEvalContext) -> Float {
        todo!()
    }
}

#[derive(Clone, Debug)]
pub struct SpectrumDotsTexture;
impl SpectrumDotsTexture {
    pub fn evaluate(
        &self,
        _ctx: &TextureEvalContext,
        _lambda: &SampledWavelengths,
    ) -> SampledSpectrum {
        todo!()
    }
}