Examples: Fix webgl_effects_stereo having no visible stereo effect #32326
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Mugen87
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Nov 22, 2025
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| camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 100000 ); | ||
| camera.position.z = 3200; | ||
| camera.focus = 3200; |
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How about do it the other way around and scale the scene down to real-world units?
Instead of having spheres with 100m radius let's decrease it by factor 1000 so the radius is 0.1 and then adjust the camera accordingly.
const geometry = new THREE.SphereGeometry( 0.1, 32, 16 );
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Related issue: #32317
Description
The
webgl_effects_stereoexample uses a scene with a very large scale (objects distributed within a range of 10,000 units, camera at z=3200). The defaultStereoCameraparameters (eyeSep = 0.064, focus = 10) were too small relative to this scale, resulting in a negligible parallax that made the stereo effect invisible.This PR adjusts the parameters to match the scene scale:
camera.focus = 3200to match the distance to the center of the scene.effect.setEyeSeparation( 100 )to provide a visible stereo baseline.For testing:
https://raw.githack.com/mrdoob/three.js/effects-stereo/examples/webgl_effects_stereo.html
(Made using https://antigravity.google/ with Gemini 3.0)