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conformance · v155
v155 · predefinedcolorspace-srgb-linear-and-display-p3-linear — conformance probe
8 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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blocked
8
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| id | contract | kind | verdict | detail |
|---|---|---|---|---|
context-srgb-linear-round-trips |
getContext('2d', { colorSpace: 'srgb-linear' }) creates a context whose getContextAttributes().colorSpace reads back 'srgb-linear'. spec ↗ | script | … | |
context-display-p3-linear-round-trips |
getContext('2d', { colorSpace: 'display-p3-linear' }) creates a context whose getContextAttributes().colorSpace reads back 'display-p3-linear'. spec ↗ | script | … | |
imagedata-srgb-linear-constructs |
new ImageData(1, 1, { colorSpace: 'srgb-linear' }) constructs and its colorSpace property reads back 'srgb-linear'. spec ↗ | script | … | |
imagedata-display-p3-linear-constructs |
new ImageData(1, 1, { colorSpace: 'display-p3-linear' }) constructs and its colorSpace property reads back 'display-p3-linear'. spec ↗ | script | … | |
getimagedata-converts-into-srgb-linear |
getImageData(..., { colorSpace: 'srgb-linear' }) on an srgb canvas returns an ImageData tagged srgb-linear whose mid-grey bytes are lower than the gamma-encoded source bytes (linear-light conversion actually happened). spec ↗ | script | … | |
unknown-enum-value-throws |
Per WebIDL enum semantics, an unknown PredefinedColorSpace value passed to getContext must throw a TypeError, not be silently ignored. spec ↗ | throws | … | |
pre-existing-display-p3-still-round-trips |
The pre-existing enum values remain intact: getContext('2d', { colorSpace: 'display-p3' }) still reads back 'display-p3' alongside the new linear values. spec ↗ | script | … | |
linear-gradient-midpoint-preserves-light |
On an srgb-linear canvas, a red-to-green gradient's midpoint read back as srgb bytes is brighter than the gamma-interpolated midpoint (interpolation really runs in linear light). spec ↗ | script | … |