Tweak reprojection amount & decrease bounces to 2 (#58)

* tweak reprojection amount * lower numUniformSamples and maxReprojectedSamples * increase numUniformSamples from 3 to 4 for scenes with more GI Co-authored-by: Noah Lyons <[email protected]>
hoverinc · Jan 14, 2020 · 739e1df · 739e1df
1 parent a68cf9d
commit 739e1df
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Showing 3 changed files with 5 additions and 5 deletions.
diff --git a/scenes/webgl-comparison/main.js b/scenes/webgl-comparison/main.js
@@ -154,6 +154,7 @@ function initRenderer(renderer) {
   renderer.toneMapping = THREE.ACESFilmicToneMapping;
   renderer.toneMappingExposure = 1.5;
   renderer.renderWhenOffFocus = false;
+  renderer.bounces = 3;
 }
 
 function unloadRenderer(renderer) {

diff --git a/src/RayTracingRenderer.js b/src/RayTracingRenderer.js
@@ -31,7 +31,7 @@ export function RayTracingRenderer(params = {}) {
   let pixelRatio = 1;
 
   const module = {
-    bounces: 3,
+    bounces: 2,
     domElement: canvas,
     maxHardwareUsage: false,
     needsUpdate: true,

diff --git a/src/renderer/RenderingPipeline.js b/src/renderer/RenderingPipeline.js
@@ -18,11 +18,10 @@ export function makeRenderingPipeline({
     bounces, // number of global illumination bounces
   }) {
 
-  const reprojectDecay = 0.975;
-  const maxReprojectedSamples = Math.round(reprojectDecay / (1 - reprojectDecay));
+  const maxReprojectedSamples = 20;
 
   // how many samples to render with uniform noise before switching to stratified noise
-  const numUniformSamples = 6;
+  const numUniformSamples = 4;
 
   // how many partitions of stratified noise should be created
   // higher number results in faster convergence over time, but with lower quality initial samples
@@ -231,7 +230,7 @@ export function makeRenderingPipeline({
     reprojectBuffer.bind();
     gl.viewport(0, 0, previewWidth, previewHeight);
     reprojectPass.draw({
-      blendAmount: reprojectDecay,
+      blendAmount: 1.0,
       light: hdrBuffer.attachments[rayTracePass.outputLocs.light],
       position: hdrBuffer.attachments[rayTracePass.outputLocs.position],
       textureScale: previewScale,