diff --git a/Cargo.lock b/Cargo.lock
index d422d27..c2d37e7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -128,9 +128,9 @@ checksum = "8f1fe948ff07f4bd06c30984e69f5b4899c516a3ef74f34df92a2df2ab535495"
 
 [[package]]
 name = "cc"
-version = "1.1.22"
+version = "1.1.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9540e661f81799159abee814118cc139a2004b3a3aa3ea37724a1b66530b90e0"
+checksum = "812acba72f0a070b003d3697490d2b55b837230ae7c6c6497f05cc2ddbb8d938"
 dependencies = [
  "jobserver",
  "libc",
@@ -544,9 +544,12 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.19.0"
+version = "1.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
+checksum = "82881c4be219ab5faaf2ad5e5e5ecdff8c66bd7402ca3160975c93b24961afd1"
+dependencies = [
+ "portable-atomic",
+]
 
 [[package]]
 name = "paste"
@@ -573,6 +576,12 @@ dependencies = [
  "miniz_oxide 0.8.0",
 ]
 
+[[package]]
+name = "portable-atomic"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc9c68a3f6da06753e9335d63e27f6b9754dd1920d941135b7ea8224f141adb2"
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.20"
@@ -754,6 +763,18 @@ dependencies = [
  "ray-tracing-material",
 ]
 
+[[package]]
+name = "ray-tracing-tev"
+version = "0.1.0"
+dependencies = [
+ "rand",
+ "ray-tracing-core",
+ "ray-tracing-renderer",
+ "ray-tracing-scene",
+ "rayon",
+ "tev_client",
+]
+
 [[package]]
 name = "rayon"
 version = "1.10.0"
@@ -884,6 +905,12 @@ version = "0.12.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "61c41af27dd6d1e27b1b16b489db798443478cef1f06a660c96db617ba5de3b1"
 
+[[package]]
+name = "tev_client"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c845c2d56d4f732d09a32c9ea2cd3f01923be7a5f98d9f7f0a347205c3141036"
+
 [[package]]
 name = "thiserror"
 version = "1.0.64"
diff --git a/Cargo.toml b/Cargo.toml
index 9d3fbfc..0f2b1d6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,4 +1,4 @@
 [workspace]
 
-members = [ "ray-tracing-core", "ray-tracing-image", "ray-tracing-material", "ray-tracing-renderer", "ray-tracing-scene"]
+members = [ "ray-tracing-core", "ray-tracing-image", "ray-tracing-material", "ray-tracing-renderer", "ray-tracing-scene", "ray-tracing-tev"]
 resolver = "2"
diff --git a/ray-tracing-renderer/src/depth_renderer.rs b/ray-tracing-renderer/src/depth_renderer.rs
index 4562918..49db54f 100644
--- a/ray-tracing-renderer/src/depth_renderer.rs
+++ b/ray-tracing-renderer/src/depth_renderer.rs
@@ -37,10 +37,10 @@ where
         let r = self.camera.forward(x, y, rng);
 
         if let Some(i) = self.scene.intersect(r, 0.0, Float::INFINITY) {
-            // Color::gray(1.0 / i.t())
-            let c = 0.5 * (i.normal() + Dir3::new(1.0, 1.0, 1.0));
+            Color::gray(1.0 / i.t())
+            // let c = 0.5 * (i.normal() + Dir3::new(1.0, 1.0, 1.0));
             // let c = i.normal();
-            Color::new(c.x(), c.y(), c.z())
+            // Color::new(c.x(), c.y(), c.z())
         } else {
             Color::black()
         }
diff --git a/ray-tracing-renderer/src/path_tracer_importance.rs b/ray-tracing-renderer/src/path_tracer_importance.rs
index 6bc157e..15fd75d 100644
--- a/ray-tracing-renderer/src/path_tracer_importance.rs
+++ b/ray-tracing-renderer/src/path_tracer_importance.rs
@@ -46,7 +46,7 @@ where
             let w_in = frame.to_frame(-r.dir());
 
             if let Some(light) = i.light() {
-                sum += alpha * light.emit(w_in, rng) * w_in.y();
+                sum += alpha * light.emit(w_in, rng);
             }
 
             let w_out = if let Some(material) = i.material() {
diff --git a/ray-tracing-tev/Cargo.toml b/ray-tracing-tev/Cargo.toml
new file mode 100644
index 0000000..5093c57
--- /dev/null
+++ b/ray-tracing-tev/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "ray-tracing-tev"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+tev_client = "0.5.2"
+ray-tracing-core = { path = "../ray-tracing-core" }
+ray-tracing-scene = { path = "../ray-tracing-scene" }
+ray-tracing-renderer = { path = "../ray-tracing-renderer" }
+rayon = "1.10.0"
+rand = { version = "0.8.5", features = ["small_rng"] }
diff --git a/ray-tracing-tev/src/main.rs b/ray-tracing-tev/src/main.rs
new file mode 100644
index 0000000..151191b
--- /dev/null
+++ b/ray-tracing-tev/src/main.rs
@@ -0,0 +1,100 @@
+use rand::{rngs::SmallRng, SeedableRng};
+use ray_tracing_core::{camera::BasicCamera, prelude::*, renderer::ClassicalRenderer};
+use ray_tracing_renderer::{
+    depth_renderer::DepthRenderer, path_tracer::PathTracer,
+    path_tracer_importance::PathTracerImportance,
+};
+use ray_tracing_scene::triangle_bvh::{examples::cornel, TriangleBVH};
+use rayon::prelude::*;
+use std::{net::TcpStream, path::Path};
+use tev_client::{PacketCreateImage, PacketUpdateImage, TevClient, TevError};
+
+fn render_image<C: ClassicalRenderer<SmallRng> + Sync>(
+    renderer: C,
+    name: impl AsRef<str>,
+    samples_per_pixel: usize,
+    tev: &mut TevClient,
+) -> Result<(), TevError> {
+    let mut data = vec![0.0; (renderer.width() * renderer.height() * 3) as usize];
+
+    data.par_chunks_mut(3).enumerate().for_each(|(i, c)| {
+        let x = (i % renderer.width() as usize) as u32;
+        let y = (i / renderer.width() as usize) as u32;
+
+        let mut rng = SmallRng::seed_from_u64((x + y * renderer.width()) as u64);
+        for _ in 0..samples_per_pixel {
+            let r = renderer.render_pixel(x, y, &mut rng) / (samples_per_pixel as Float);
+            c[0] += r.r();
+            c[1] += r.g();
+            c[2] += r.b();
+        }
+    });
+
+    let channel_names = &["r", "g", "b"];
+
+    tev.send(PacketCreateImage {
+        image_name: name.as_ref(),
+        grab_focus: false,
+        width: renderer.width(),
+        height: renderer.height(),
+        channel_names,
+    })?;
+
+    tev.send(PacketUpdateImage {
+        image_name: name.as_ref(),
+        grab_focus: false,
+        channel_names,
+        channel_offsets: &[0, 1, 2],
+        channel_strides: &[3, 3, 3],
+        x: 0,
+        y: 0,
+        width: renderer.width(),
+        height: renderer.height(),
+        data: &data,
+    })?;
+
+    Ok(())
+}
+
+fn get_scene() -> (TriangleBVH<SmallRng>, BasicCamera) {
+    let s = cornel();
+
+    let c = BasicCamera::new(
+        400,
+        400,
+        Pos3::new(-6.0, 0.0, 0.0),
+        Dir3::new(1.0, 0.0, 0.0),
+        Dir3::up(),
+        Float::to_radians(90.0),
+    );
+
+    (s, c)
+}
+
+fn main() {
+    let mut client = TevClient::wrap(TcpStream::connect("127.0.0.1:14158").unwrap());
+
+    let (s, c) = get_scene();
+    let r = DepthRenderer::new(s, c);
+    render_image(r, "depth renderer", 128, &mut client).unwrap();
+
+    let samples_per_pixel = 1024;
+
+    let (s, c) = get_scene();
+    let r = PathTracer::new(s, c);
+    render_image(r, "example path tracer", samples_per_pixel, &mut client).unwrap();
+
+    let (s, c) = get_scene();
+    let r = PathTracerImportance::new(s, c);
+    render_image(
+        r,
+        "example path tracer importance 1024",
+        samples_per_pixel,
+        &mut client,
+    )
+    .unwrap();
+
+    let (s, c) = get_scene();
+    let r = PathTracerImportance::new(s, c);
+    render_image(r, "example path tracer importance 2048", 2048, &mut client).unwrap();
+}