111 lines
3.7 KiB
Rust
111 lines
3.7 KiB
Rust
use crate::core::image::Image;
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use crate::core::material::CreateMaterial;
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use crate::spectra::get_colorspace_context;
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use crate::utils::{Arena, FileLoc, TextureParameterDictionary, Upload};
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use shared::bxdfs::HairBxDF;
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use shared::core::bsdf::BSDF;
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use shared::core::bssrdf::BSSRDF;
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use shared::core::material::{Material, MaterialEvalContext, MaterialTrait};
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use shared::core::spectrum::Spectrum;
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use shared::core::texture::{GPUFloatTexture, SpectrumType, TextureEvaluator};
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use shared::materials::complex::*;
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use shared::spectra::RGBUnboundedSpectrum;
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use shared::spectra::SampledWavelengths;
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use shared::textures::SpectrumConstantTexture;
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use shared::utils::Ptr;
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use std::collections::HashMap;
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use std::fmt::Error;
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use std::sync::Arc;
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impl CreateMaterial for HairMaterial {
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fn create(
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parameters: &TextureParameterDictionary,
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normal_map: Option<Arc<Image>>,
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_named_materials: &HashMap<String, Material>,
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loc: &FileLoc,
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arena: &mut Arena,
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) -> Result<Material, Error> {
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let sigma_a = parameters.get_spectrum_texture_or_null("sigma_a", SpectrumType::Unbounded);
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let reflectance = parameters
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.get_spectrum_texture_or_null("reflectance", SpectrumType::Albedo)
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.or_else(|| parameters.get_spectrum_texture_or_null("color", SpectrumType::Albedo));
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let eumelanin = parameters.get_float_texture_or_null("eumelanin");
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let pheomelanin = parameters.get_float_texture_or_null("pheomelanin");
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let has_melanin = eumelanin.is_some() || pheomelanin.is_some();
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// Default distribution if nothing is spceified
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let sigma_a = if sigma_a.is_none() && !reflectance.is_none() && !has_melanin {
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let stdcs = get_colorspace_context();
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let default_rgb = HairBxDF::sigma_a_from_concentration(1.3, 0.0, stdcs);
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Some(Arc::new(SpectrumConstantTexture::new(
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Spectrum::RGBUnbounded(RGBUnboundedSpectrum::new(
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reflectance.to_rgb(),
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default_rgb,
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)),
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)))
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} else {
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sigma_a
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};
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let eta = parameters.get_flot_texture("eta", 1.55);
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let beta_m = parameters.get_float_texture("beta_m", 0.3);
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let beta_n = parameters.get_float_texture("beta_n", 0.3);
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let alpha = parameters.get_float_texture("alpha", 2.);
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let material = HairMaterial::new(
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sigma_a.upload(arena),
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reflectance.upload(arena),
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eumelanin.upload(arena),
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pheomelanin.upload(arena),
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eta.upload(arena),
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beta_m.upload(arena),
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beta_n.upload(arena),
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alpha.upload(arena),
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);
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Ok(Material::Hair(material))
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}
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}
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impl MaterialTrait for MeasuredMaterial {
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fn get_bsdf<T: TextureEvaluator>(
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&self,
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_tex_eval: &T,
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_ctx: &MaterialEvalContext,
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_lambda: &SampledWavelengths,
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) -> BSDF {
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todo!()
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}
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fn get_bssrdf<T>(
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&self,
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_tex_eval: &T,
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_ctx: &MaterialEvalContext,
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_lambda: &SampledWavelengths,
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) -> Option<BSSRDF> {
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todo!()
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}
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fn can_evaluate_textures(&self, _tex_eval: &dyn TextureEvaluator) -> bool {
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todo!()
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}
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fn get_normal_map(&self) -> *const Image {
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todo!()
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}
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fn get_displacement(&self) -> Ptr<GPUFloatTexture> {
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todo!()
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}
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fn has_subsurface_scattering(&self) -> bool {
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todo!()
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}
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}
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impl CreateMaterial for SubsurfaceMaterial {
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fn create(
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_parameters: &TextureParameterDictionary,
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_normal_map: Option<Arc<Image>>,
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_named_materials: &HashMap<String, Material>,
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_loc: &FileLoc,
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_arena: &mut Arena,
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) -> Result<Material, Error> {
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todo!()
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}
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}
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