[Webkit-unassigned] [Bug 179772] New: Artifacts left behind when animating objects without anti-aliasing turned on

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=179772

            Bug ID: 179772
           Summary: Artifacts left behind when animating objects without
                    anti-aliasing turned on
           Product: WebKit
           Version: Safari 11
          Hardware: Macintosh
                OS: macOS 10.13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: icodealot at gmail.com
                CC: dino at apple.com

Created attachment 327065

  --> https://bugs.webkit.org/attachment.cgi?id=327065&action=review

Screenshot of the issue and fix with anti-aliasing turned on

When following the introduction to Three.js located here (https://threejs.org/docs/index.html#manual/introduction/Creating-a-scene) on Safari 11.0.1 on macOS 10.13.1 there are pixel artifacts leftover in the canvas. Turning on anti-aliasing clears these artifacts and renders as expected. See attached screenshot for an example.

// This leaves screen artifacts in Safari (see attached screenshot)
var renderer = new THREE.WebGLRenderer();


// Fixes the issue in Safari
var renderer = new THREE.WebGLRenderer({ antialias: true });

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