diff --git a/src/core/texture.rs b/src/core/texture.rs
index 7390666..745a550 100644
--- a/src/core/texture.rs
+++ b/src/core/texture.rs
@@ -1,15 +1,16 @@
 use crate::textures::*;
 use crate::utils::{MIPMap, MIPMapFilterOptions, TextureParameterDictionary};
 use crate::{Arena, FileLoc};
-use anyhow::{anyhow, Result};
+use anyhow::{Result, anyhow};
 use enum_dispatch::enum_dispatch;
+use shared::Float;
 use shared::core::color::ColorEncoding;
 use shared::core::geometry::Vector3f;
 use shared::core::image::WrapMode;
 use shared::core::texture::SpectrumType;
 use shared::core::texture::{
-    CylindricalMapping, PlanarMapping, SphericalMapping, TextureEvalContext, TextureMapping2D,
-    UVMapping,
+    CylindricalMapping, PlanarMapping, PointTransformMapping, SphericalMapping,
+    TextureEvalContext, TextureMapping2D, TextureMapping3D, UVMapping,
 };
 use shared::spectra::{SampledSpectrum, SampledWavelengths};
 use shared::textures::{
@@ -18,7 +19,6 @@ use shared::textures::{
     SpectrumConstantTexture, SpectrumDotsTexture, WindyTexture, WrinkledTexture,
 };
 use shared::utils::Transform;
-use shared::Float;
 use std::collections::HashMap;
 use std::sync::{Arc, Mutex, OnceLock};
 
@@ -38,7 +38,6 @@ pub enum FloatTexture {
     Bilerp(FloatBilerpTexture),
 }
 
-
 impl Default for FloatTexture {
     fn default() -> Self {
         FloatTexture::Constant(FloatConstantTexture::new(1.0))
@@ -102,6 +101,7 @@ pub trait CreateSpectrumTexture {
         parameters: TextureParameterDictionary,
         spectrum_type: SpectrumType,
         loc: FileLoc,
+        arena: &Arena,
     ) -> Result<SpectrumTexture>;
 }
 
@@ -112,29 +112,29 @@ impl SpectrumTexture {
         params: TextureParameterDictionary,
         spectrum_type: SpectrumType,
         loc: FileLoc,
-        _arena: &Arena,
+        arena: &Arena,
     ) -> Result<Self> {
         match name {
             "constant" => {
-                SpectrumConstantTexture::create(render_from_texture, params, spectrum_type, loc)
+                SpectrumConstantTexture::create(render_from_texture, params, spectrum_type, loc, arena)
             }
             "scale" => {
-                SpectrumScaledTexture::create(render_from_texture, params, spectrum_type, loc)
+                SpectrumScaledTexture::create(render_from_texture, params, spectrum_type, loc, arena)
             }
-            "mix" => SpectrumMixTexture::create(render_from_texture, params, spectrum_type, loc),
+            "mix" => SpectrumMixTexture::create(render_from_texture, params, spectrum_type, loc, arena),
             "directionmix" => {
-                SpectrumDirectionMixTexture::create(render_from_texture, params, spectrum_type, loc)
+                SpectrumDirectionMixTexture::create(render_from_texture, params, spectrum_type, loc, arena)
             }
             "bilerp" => {
-                SpectrumBilerpTexture::create(render_from_texture, params, spectrum_type, loc)
+                SpectrumBilerpTexture::create(render_from_texture, params, spectrum_type, loc, arena)
             }
             "imagemap" => {
-                SpectrumImageTexture::create(render_from_texture, params, spectrum_type, loc)
+                SpectrumImageTexture::create(render_from_texture, params, spectrum_type, loc, arena)
             }
             "checkerboard" => {
-                SpectrumCheckerboardTexture::create(render_from_texture, params, spectrum_type, loc)
+                SpectrumCheckerboardTexture::create(render_from_texture, params, spectrum_type, loc, arena)
             }
-            "dots" => SpectrumDotsTexture::create(render_from_texture, params, spectrum_type, loc),
+            "dots" => SpectrumDotsTexture::create(render_from_texture, params, spectrum_type, loc, arena),
             _ => Err(anyhow!(
                 "Spectrum texture type '{}' unknown at {}",
                 name,
@@ -197,6 +197,21 @@ impl CreateTextureMapping for TextureMapping2D {
     }
 }
 
+impl CreateTextureMapping for TextureMapping3D {
+    fn create(
+        params: &TextureParameterDictionary,
+        render_from_texture: &Transform,
+        loc: &FileLoc,
+    ) -> Result<Self>
+    where
+        Self: Sized,
+    {
+        let mapping = PointTransformMapping::new(render_from_texture.inverse());
+        Ok(TextureMapping3D::PointTransform(mapping))
+    }
+
+}
+
 pub static TEXTURE_CACHE: OnceLock<Mutex<HashMap<TexInfo, Arc<MIPMap>>>> = OnceLock::new();
 
 pub fn get_texture_cache() -> &'static Mutex<HashMap<TexInfo, Arc<MIPMap>>> {
diff --git a/src/textures/bilerp.rs b/src/textures/bilerp.rs
index 0f9592e..965e0c6 100644
--- a/src/textures/bilerp.rs
+++ b/src/textures/bilerp.rs
@@ -1,39 +1,64 @@
 use crate::Arena;
 use crate::core::texture::{
-    CreateFloatTexture, CreateSpectrumTexture, SpectrumTexture
-    };
+    CreateFloatTexture, CreateSpectrumTexture, CreateTextureMapping, FloatTexture, SpectrumTexture,
+};
+use crate::utils::{FileLoc, TextureParameterDictionary};
 use anyhow::Result;
-use shared::core::texture::{SpectrumType, TextureEvalContext};
-use shared::{
-    spectra::{SampledSpectrum, SampledWavelengths},
-    textures::{FloatBilerpTexture, SpectrumBilerpTexture},
-    utils::Transform
-};
-
-use crate::{
-    core::texture::FloatTexture,
-    utils::{FileLoc, TextureParameterDictionary}
-};
+use shared::core::spectrum::Spectrum;
+use shared::core::texture::{SpectrumType, TextureMapping2D};
+use shared::spectra::ConstantSpectrum;
+use shared::textures::{FloatBilerpTexture, SpectrumBilerpTexture};
+use shared::utils::Transform;
 
 impl CreateFloatTexture for FloatBilerpTexture {
     fn create(
-        _render_from_texture: Transform,
-        _parameters: TextureParameterDictionary,
-        _loc: FileLoc,
-        _arena: &Arena,
+        render_from_texture: Transform,
+        parameters: TextureParameterDictionary,
+        loc: FileLoc,
+        arena: &Arena,
     ) -> Result<FloatTexture> {
-        todo!()
+        let map = TextureMapping2D::create(&parameters, &render_from_texture, &loc)?;
+
+        let tex = FloatBilerpTexture::new(
+            map,
+            parameters.get_one_float("v00", 0.)?,
+            parameters.get_one_float("v01", 1.)?,
+            parameters.get_one_float("v10", 0.)?,
+            parameters.get_one_float("v11", 1.)?,
+        );
+        Ok(FloatTexture::Bilerp(tex))
     }
 }
 
+
 impl CreateSpectrumTexture for SpectrumBilerpTexture {
     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 = TextureMapping2D::create(&parameters, &render_from_texture, &loc)?;
+        let zero = Spectrum::Constant(ConstantSpectrum::new(0.));
+        let one = Spectrum::Constant(ConstantSpectrum::new(1.));
+
+        // `Spectrum` is already a device type, so it is allocated into the arena
+        // rather than uploaded -- upload is for host trees (Arc) -> device (Ptr).
+        let mut get = |name: &str, def: Spectrum| {
+            let s = parameters
+                .get_one_spectrum(name, Some(def), spectrum_type)
+                .unwrap_or(def);
+            arena.alloc(s)
+        };
+
+        let tex = SpectrumBilerpTexture::new(
+            map,
+            get("v00", zero),
+            get("v01", one),
+            get("v10", zero),
+            get("v11", one),
+        );
+        Ok(SpectrumTexture::Bilerp(tex))
     }
 }
-
diff --git a/src/textures/checkerboard.rs b/src/textures/checkerboard.rs
index a35701a..0b1dafd 100644
--- a/src/textures/checkerboard.rs
+++ b/src/textures/checkerboard.rs
@@ -29,6 +29,7 @@ impl CreateSpectrumTexture for SpectrumCheckerboardTexture {
         _parameters: TextureParameterDictionary,
         _spectrum_type: SpectrumType,
         _loc: FileLoc,
+        _arena: &Arena,
     ) -> Result<SpectrumTexture> {
         todo!()
     }
diff --git a/src/textures/constant.rs b/src/textures/constant.rs
index ff52234..238727d 100644
--- a/src/textures/constant.rs
+++ b/src/textures/constant.rs
@@ -1,9 +1,11 @@
 use crate::Arena;
 use anyhow::Result;
+use shared::core::spectrum::Spectrum;
+use shared::spectra::ConstantSpectrum;
 use shared::{
-    core::texture::{SpectrumType, TextureEvalContext},
+    core::texture::SpectrumType,
     textures::{FloatConstantTexture, SpectrumConstantTexture},
-    utils::Transform
+    utils::Transform,
 };
 
 use crate::{
@@ -15,22 +17,30 @@ use crate::{
 impl CreateFloatTexture for FloatConstantTexture {
     fn create(
         _render_from_texture: Transform,
-        _parameters: TextureParameterDictionary,
+        parameters: TextureParameterDictionary,
         _loc: FileLoc,
         _arena: &Arena,
     ) -> Result<FloatTexture> {
-        todo!()
+        let value = parameters.get_one_float("value", 1.)?;
+        Ok(FloatTexture::Constant(FloatConstantTexture::new(value)))
     }
 }
 
 impl CreateSpectrumTexture for SpectrumConstantTexture {
     fn create(
         _render_from_texture: Transform,
-        _parameters: TextureParameterDictionary,
-        _spectrum_type: SpectrumType,
+        parameters: TextureParameterDictionary,
+        spectrum_type: SpectrumType,
         _loc: FileLoc,
+        _arena: &Arena,
     ) -> Result<SpectrumTexture> {
-        todo!()
+        let one = Spectrum::Constant(ConstantSpectrum::new(1.));
+        let value = parameters
+            .get_one_spectrum("value", Some(one), spectrum_type)
+            .unwrap_or(one);
+        Ok(SpectrumTexture::Constant(SpectrumConstantTexture::new(
+            value,
+        )))
     }
 }
 
diff --git a/src/textures/dots.rs b/src/textures/dots.rs
index 29f425b..97cd160 100644
--- a/src/textures/dots.rs
+++ b/src/textures/dots.rs
@@ -29,6 +29,7 @@ impl CreateSpectrumTexture for SpectrumDotsTexture {
         _parameters: TextureParameterDictionary,
         _spectrum_type: SpectrumType,
         _loc: FileLoc,
+        _arena: &Arena,
     ) -> Result<SpectrumTexture> {
         todo!()
     }
diff --git a/src/textures/image.rs b/src/textures/image.rs
index 3707041..146ad03 100644
--- a/src/textures/image.rs
+++ b/src/textures/image.rs
@@ -134,6 +134,7 @@ impl CreateSpectrumTexture for SpectrumImageTexture {
         parameters: TextureParameterDictionary,
         spectrum_type: SpectrumType,
         loc: FileLoc,
+        _arena: &Arena,
     ) -> Result<SpectrumTexture> {
         let mapping = TextureMapping2D::create(&parameters, &render_from_texture, &loc)?;
 
diff --git a/src/textures/marble.rs b/src/textures/marble.rs
index b5541ce..6137c2a 100644
--- a/src/textures/marble.rs
+++ b/src/textures/marble.rs
@@ -1,14 +1,19 @@
-use crate::core::texture::{CreateSpectrumTexture, SpectrumTexture };
+use crate::core::texture::{CreateSpectrumTexture, SpectrumTexture};
+use crate::utils::{FileLoc, TextureParameterDictionary};
+use crate::Arena;
+use anyhow::Result;
+use shared::Transform;
 use shared::core::texture::SpectrumType;
 use shared::textures::MarbleTexture;
 
 impl CreateSpectrumTexture for MarbleTexture {
     fn create(
-        _render_from_texture: shared::utils::Transform,
-        _parameters: crate::utils::TextureParameterDictionary,
+        _render_from_texture: Transform,
+        _parameters: TextureParameterDictionary,
         _spectrum_type: SpectrumType,
-        _loc: crate::utils::FileLoc,
-    ) -> anyhow::Result<SpectrumTexture> {
+        _loc: FileLoc,
+        _arena: &Arena,
+    ) -> Result<SpectrumTexture> {
         todo!()
     }
 }
diff --git a/src/textures/mix.rs b/src/textures/mix.rs
index 6944e26..05ac31d 100644
--- a/src/textures/mix.rs
+++ b/src/textures/mix.rs
@@ -80,6 +80,7 @@ impl CreateSpectrumTexture for SpectrumMixTexture {
         _parameters: TextureParameterDictionary,
         _spectrum_type: SpectrumType,
         _loc: FileLoc,
+        _arena: &Arena,
     ) -> Result<SpectrumTexture> {
         todo!()
     }
@@ -98,6 +99,7 @@ impl CreateSpectrumTexture for SpectrumDirectionMixTexture {
         _parameters: TextureParameterDictionary,
         _spectrum_type: SpectrumType,
         _loc: FileLoc,
+        _arena: &Arena,
     ) -> Result<SpectrumTexture> {
         todo!()
     }
diff --git a/src/textures/mod.rs b/src/textures/mod.rs
index 6dad3ab..a293563 100644
--- a/src/textures/mod.rs
+++ b/src/textures/mod.rs
@@ -10,6 +10,7 @@ mod scaled;
 mod windy;
 mod wrinkled;
 
+pub use bilerp::*;
 pub use image::*;
 pub use mix::*;
 pub use scaled::*;
diff --git a/src/textures/scaled.rs b/src/textures/scaled.rs
index e40d3a5..c798d75 100644
--- a/src/textures/scaled.rs
+++ b/src/textures/scaled.rs
@@ -63,6 +63,7 @@ impl CreateSpectrumTexture for SpectrumScaledTexture {
         parameters: TextureParameterDictionary,
         spectrum_type: SpectrumType,
         _loc: FileLoc,
+        _arena: &Arena,
     ) -> Result<SpectrumTexture> {
         let one = Spectrum::Constant(ConstantSpectrum::new(1.0));
         let tex = parameters