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SSGINode: Improve Temporal Noise. #31890

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Merged
Mugen87 merged 5 commits into from
Sep 12, 2025
Merged

SSGINode: Improve Temporal Noise. #31890

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bc42380
Improve SSGI Temporal Noise
zalo Sep 11, 2025
fda02da
Fix bug toggling temporal filtering in AO/GI Mode
zalo Sep 11, 2025
a26553e
Update SSGINode.js
zalo Sep 11, 2025
e48d9dc
Make it mathematically equivalent to using frameId
zalo Sep 11, 2025
47a7565
Update SSGINode.js
Mugen87 Sep 12, 2025
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3 changes: 2 additions & 1 deletion examples/jsm/tsl/display/SSGINode.js
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Expand Up @@ -576,7 +576,8 @@ class SSGINode extends TempNode {

const noiseOffset = spatialOffsets( screenCoordinate );
const noiseDirection = gradientNoise( screenCoordinate );
const initialRayStep = fract( noiseOffset.add( this._temporalOffset ) ).add( rand( uvNode ).mul( 2 ).sub( 1 ) );
const noiseJitterIdx = this._temporalDirection.mul( 0.02 ); // Port: Add noiseJitterIdx here for slightly better noise convergence with TRAA (see #31890 for more details)
const initialRayStep = fract( noiseOffset.add( this._temporalOffset ) ).add( rand( uvNode.add( noiseJitterIdx ).mul( 2 ).sub( 1 ) ) );

const ao = float( 0 );
const color = vec3( 0 );
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4 changes: 3 additions & 1 deletion examples/webgpu_postprocessing_ssgi.html
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Expand Up @@ -160,7 +160,9 @@
gui.add( giPass.useScreenSpaceSampling, 'value' ).name( 'screen-space sampling' );
gui.add( giPass, 'useTemporalFiltering' ).name( 'temporal filtering' ).onChange( updatePostprocessing );

function updatePostprocessing( value ) {
function updatePostprocessing() {

const value = params.output;

if ( value === 1 ) {

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