Bug 214392
| Summary: | [WebGL2] tex-srgb-mipmap test fails on macOS Intel + iOS (but passes on macOS Apple Silicon) | ||
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| Product: | WebKit | Reporter: | Dean Jackson <dino> |
| Component: | WebGL | Assignee: | Kimmo Kinnunen <kkinnunen> |
| Status: | ASSIGNED | ||
| Severity: | Normal | CC: | dino, jdarpinian, justin_fan, kbr, kkinnunen, webkit-bug-importer |
| Priority: | P2 | Keywords: | InRadar |
| Version: | WebKit Nightly Build | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| See Also: | https://bugs.webkit.org/show_bug.cgi?id=229955 | ||
| Bug Depends on: | 223934 | ||
| Bug Blocks: | |||
Dean Jackson
The test webgl/2.0.0/conformance2/textures/misc/tex-srgb-mipmap.html is failing on:
- macOS Intel (AMD) (didn't check Intel)
- iOS (hardware)
But passing on:
- macOS Apple Silicon
It also has different results on iOS Simulator (still failing, just different pixel colour values)
| Attachments | ||
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| Add attachment proposed patch, testcase, etc. |
Radar WebKit Bug Importer
<rdar://problem/65641438>
Kenneth Russell
Comparing the results of the 2.0.0 snapshot:
https://www.khronos.org/registry/webgl/conformance-suites/2.0.0/conformance2/textures/misc/tex-srgb-mipmap.html
to top-of-tree:
https://www.khronos.org/registry/webgl/sdk/tests/conformance2/textures/misc/tex-srgb-mipmap.html
the 2.0.0 version fails in Chrome Canary on macOS but the top-of-tree version passes.
If I remember correctly, Intel contributed this test and workarounds for driver bugs where mipmaps for sRGB textures weren't generated correctly.
I've just filed:
Workarounds for sRGB mipmap generation needed on macOS
https://bugs.chromium.org/p/angleproject/issues/detail?id=4848
about this.
Khronos' 2.0.0 snapshot of this test also needs to be updated, and rolled forward in WebKit too.