Done with textures

shared/src/textures/bilerp.rs

@@ -39,8 +39,12 @@ impl FloatBilerpTexture {
         }
     }
 
-    pub fn evaluate(&self, _ctx: &TextureEvalContext) -> Float {
-        todo!()
+    pub fn evaluate(&self, ctx: &TextureEvalContext) -> Float {
+        let c = self.mapping.map(ctx);
+        (1. - c.st[0]) * (1. - c.st[1]) * self.v00
+            + c.st[0] * (1. - c.st[1]) * self.v10
+            + (1. - c.st[0]) * c.st[1] * self.v01
+            + c.st[0] * c.st[1] * self.v11
     }
 }
 

shared/src/textures/marble.rs

@@ -23,6 +23,24 @@ pub struct MarbleTexture {
 }
 
 impl MarbleTexture {
+    pub fn new(
+        mapping: TextureMapping3D,
+        octaves: i32,
+        omega: Float,
+        scale: Float,
+        variation: Float,
+        colorspace: Ptr<RGBColorSpace>,
+    ) -> Self {
+        Self {
+            mapping,
+            octaves: octaves.try_into().unwrap(),
+            omega,
+            scale,
+            variation,
+            colorspace,
+        }
+    }
+
     pub fn evaluate(
         &self,
         ctx: &TextureEvalContext,

src/core/texture.rs

@@ -9,8 +9,8 @@ use shared::core::geometry::Vector3f;
 use shared::core::image::WrapMode;
 use shared::core::texture::SpectrumType;
 use shared::core::texture::{
-    CylindricalMapping, PlanarMapping, PointTransformMapping, SphericalMapping,
-    TextureEvalContext, TextureMapping2D, TextureMapping3D, UVMapping,
+    CylindricalMapping, PlanarMapping, PointTransformMapping, SphericalMapping, TextureEvalContext,
+    TextureMapping2D, TextureMapping3D, UVMapping,
 };
 use shared::spectra::{SampledSpectrum, SampledWavelengths};
 use shared::textures::{
@@ -115,26 +115,53 @@ impl SpectrumTexture {
         arena: &Arena,
     ) -> Result<Self> {
         match name {
-            "constant" => {
-                SpectrumConstantTexture::create(render_from_texture, params, spectrum_type, loc, arena)
-            }
-            "scale" => {
-                SpectrumScaledTexture::create(render_from_texture, params, spectrum_type, loc, arena)
-            }
-            "mix" => SpectrumMixTexture::create(render_from_texture, params, spectrum_type, loc, arena),
-            "directionmix" => {
-                SpectrumDirectionMixTexture::create(render_from_texture, params, spectrum_type, loc, arena)
-            }
-            "bilerp" => {
-                SpectrumBilerpTexture::create(render_from_texture, params, spectrum_type, loc, arena)
+            "constant" => SpectrumConstantTexture::create(
+                render_from_texture,
+                params,
+                spectrum_type,
+                loc,
+                arena,
+            ),
+            "scale" => SpectrumScaledTexture::create(
+                render_from_texture,
+                params,
+                spectrum_type,
+                loc,
+                arena,
+            ),
+            "mix" => {
+                SpectrumMixTexture::create(render_from_texture, params, spectrum_type, loc, arena)
             }
+            "directionmix" => SpectrumDirectionMixTexture::create(
+                render_from_texture,
+                params,
+                spectrum_type,
+                loc,
+                arena,
+            ),
+            "bilerp" => SpectrumBilerpTexture::create(
+                render_from_texture,
+                params,
+                spectrum_type,
+                loc,
+                arena,
+            ),
             "imagemap" => {
                 SpectrumImageTexture::create(render_from_texture, params, spectrum_type, loc, arena)
             }
-            "checkerboard" => {
-                SpectrumCheckerboardTexture::create(render_from_texture, params, spectrum_type, loc, arena)
+            "checkerboard" => SpectrumCheckerboardTexture::create(
+                render_from_texture,
+                params,
+                spectrum_type,
+                loc,
+                arena,
+            ),
+            "dots" => {
+                SpectrumDotsTexture::create(render_from_texture, params, spectrum_type, loc, arena)
+            }
+            "marble" => {
+                MarbleTexture::create(render_from_texture, params, spectrum_type, loc, arena)
             }
-            "dots" => SpectrumDotsTexture::create(render_from_texture, params, spectrum_type, loc, arena),
             _ => Err(anyhow!(
                 "Spectrum texture type '{}' unknown at {}",
                 name,
@@ -209,7 +236,6 @@ impl CreateTextureMapping for TextureMapping3D {
         let mapping = PointTransformMapping::new(render_from_texture.inverse());
         Ok(TextureMapping3D::PointTransform(mapping))
     }
-
 }
 
 pub static TEXTURE_CACHE: OnceLock<Mutex<HashMap<TexInfo, Arc<MIPMap>>>> = OnceLock::new();

src/textures/marble.rs

@@ -1,19 +1,29 @@
-use crate::core::texture::{CreateSpectrumTexture, SpectrumTexture};
-use crate::utils::{FileLoc, TextureParameterDictionary};
 use crate::Arena;
+use crate::core::texture::{CreateSpectrumTexture, CreateTextureMapping, SpectrumTexture};
+use crate::spectra::get_colorspace_device;
+use crate::utils::{FileLoc, TextureParameterDictionary};
 use anyhow::Result;
 use shared::Transform;
-use shared::core::texture::SpectrumType;
+use shared::core::texture::{SpectrumType, TextureMapping3D};
 use shared::textures::MarbleTexture;
 
 impl CreateSpectrumTexture for MarbleTexture {
     fn create(
-        _render_from_texture: Transform,
-        _parameters: TextureParameterDictionary,
-        _spectrum_type: SpectrumType,
-        _loc: FileLoc,
+        render_from_texture: Transform,
+        parameters: TextureParameterDictionary,
+        spectrum_type: SpectrumType,
+        loc: FileLoc,
         _arena: &Arena,
     ) -> Result<SpectrumTexture> {
-        todo!()
+        let map = TextureMapping3D::create(&parameters, &render_from_texture, &loc)?;
+        let tex = MarbleTexture::new(
+            map,
+            parameters.get_one_int("octaves", 8)?,
+            parameters.get_one_float("roughness", 0.5)?,
+            parameters.get_one_float("scale", 1.)?,
+            parameters.get_one_float("variation", 0.2)?,
+            get_colorspace_device().srgb,
+        );
+        Ok(SpectrumTexture::Marble(tex))
     }
 }

src/textures/mix.rs

@@ -4,8 +4,9 @@ use crate::utils::{FileLoc, TextureParameterDictionary};
 use anyhow::Result;
 use shared::Float;
 use shared::core::geometry::{Vector3f, VectorLike};
+use shared::core::spectrum::Spectrum;
 use shared::core::texture::{SpectrumType, TextureEvalContext};
-use shared::spectra::{SampledSpectrum, SampledWavelengths};
+use shared::spectra::{ConstantSpectrum, SampledSpectrum, SampledWavelengths};
 use shared::utils::Transform;
 use std::sync::Arc;
 
@@ -90,11 +91,11 @@ impl CreateSpectrumTexture for SpectrumMixTexture {
                 .expect("default supplied")
         };
 
-        let tex = SpectrumMixTexture::new(
-            tex("tex1", zero),
-            tex("tex2", one),
-            parameters.get_float_texture("amount", 0.5)?,
-        );
+        let tex = SpectrumMixTexture {
+            tex1: tex("tex1", zero),
+            tex2: tex("tex2", one),
+            amount: parameters.get_float_texture("amount", 0.5)?,
+        };
         Ok(SpectrumTexture::Mix(tex))
     }
 }
@@ -108,12 +109,27 @@ pub struct SpectrumDirectionMixTexture {
 
 impl CreateSpectrumTexture for SpectrumDirectionMixTexture {
     fn create(
-        _render_from_texture: Transform,
-        _parameters: TextureParameterDictionary,
-        _spectrum_type: SpectrumType,
-        _loc: FileLoc,
+        render_from_texture: Transform,
+        parameters: TextureParameterDictionary,
+        spectrum_type: SpectrumType,
+        loc: FileLoc,
         _arena: &Arena,
     ) -> Result<SpectrumTexture> {
-        todo!()
+        let dir_raw = parameters.get_one_vector3f("dir", Vector3f::new(0., 1., 0.))?;
+        let dir = render_from_texture.apply_to_vector(dir_raw).normalize();
+        let tex = |name: &str, def: Spectrum| {
+            parameters
+                .get_spectrum_texture(name, Some(def), spectrum_type)
+                .expect("default supplied")
+        };
+
+        let zero = Spectrum::Constant(ConstantSpectrum::new(0.));
+        let one = Spectrum::Constant(ConstantSpectrum::new(1.));
+        let tex = SpectrumDirectionMixTexture {
+            tex1: tex("tex1", zero),
+            tex2: tex("tex2", one),
+            dir,
+        };
+        Ok(SpectrumTexture::DirectionMix(tex))
     }
 }