example to readme

Cargo.toml

@@ -32,7 +32,7 @@ lto = true          # Enable link-time optimization
 codegen-units = 1   # Reduce number of codegen units to increase optimizations
 panic = 'abort'     # Abort on panic
 strip = false        # Strip symbols from binary*
-debug = true
+debug = false
 
 [profile.dev]
 strip = false

README.md

@@ -19,6 +19,10 @@ Simple Raytracer for simple 3D scenes, made in Rust. Objective is to learn Rust,
 - scene and configuration input from JSON
 - ...
 
+![Render example](https://github.com/scott223/raytracer/blob/main/render1200.png?raw=true)
+Render of different objects (cube, sphere, .obj file import (100k triangles) and materials (lambertian, glass, fuzzy metal). This render of 1200x1200 pixels with 2000 samples per pixel took about 30 minutes to complete on MacBook Air M2.
+
+
 ## todo's
 - adaptive sampling
 - BRDF materials

input/config.json

@@ -1,8 +1,8 @@
 {
-  "img_width": 600.0,
-  "img_height": 600.0,
-  "samples": 12,
-  "max_depth": 8,
+  "img_width": 1200.0,
+  "img_height": 1200.0,
+  "samples": 2048,
+  "max_depth": 12,
   "sky_color": {
     "r": 0.3,
     "g": 0.5,

input/scene.json

@@ -15,6 +15,22 @@
     "camera_focus_dist": 800.0
   },
   "elements": [
+    {
+      "JSONSphere": {
+        "center": {
+          "x": 420,
+          "y": 60,
+          "z": 100.0
+        },
+        "radius": 60,
+        "material": {
+          "Dielectric": {
+            "index_of_refraction": 1.5
+          }
+        },
+        "attractor": true
+      }
+    },
     {
       "JSONObj": {
         "filepath": "input/obj/dragon.obj",
@@ -59,9 +75,9 @@
         "material": {
           "Metal": {
             "albedo": {
-              "r": 0.2,
-              "g": 0.2,
-              "b": 0.73
+              "r": 0.3,
+              "g": 0.3,
+              "b": 0.83
             },
             "fuzz": 0.1
           }
@@ -437,8 +453,8 @@
         "DiffuseLight": {
           "albedo": {
             "r": 10.0,
-            "g": 10.0,
-            "b": 10.0
+            "g": 8.0,
+            "b": 8.0
           }
         }
       },

src/render/integrator.rs

@@ -242,7 +242,7 @@ impl RenderIntegrator {
             // set pixel color, but first divide by the number of samples to get the average and return
             *band_item = (color / sum_sample_weight)
                 .clamp()
-                .linear_to_gamma(2.2);
+                .linear_to_gamma(2.5);
         }
     }