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conformance · v134
v134 · offscreencanvas-getcontextattributes — conformance probe
6 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.
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pass
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fail
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| id | contract | kind | verdict | detail |
|---|---|---|---|---|
offscreencanvas-defined |
OffscreenCanvas is exposed. | exists | … | |
offscreencanvas-2d-getcontextattributes |
An OffscreenCanvas 2D context exposes getContextAttributes() like the on-screen canvas does. | script | … | |
offscreencanvas-2d-attrs-alpha |
getContextAttributes() returns an object containing alpha. | script | … | |
offscreencanvas-2d-attrs-willreadfrequently |
willReadFrequently is reflected back from getContextAttributes() when set at context creation. | script | … | |
offscreencanvas-2d-attrs-colorspace |
colorSpace is reflected — set to 'display-p3' on creation, getContextAttributes returns 'display-p3'. | script | … | |
offscreencanvas-webgl-getcontextattributes |
An OffscreenCanvas WebGL context also exposes getContextAttributes (parity with on-screen WebGLRenderingContext). | script | … |