De-register Compat enum namespace#584
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There are only two compat extensions (CompatibilityModeLimits and textureBindingViewDimension). Only one of them (textureBindingViewDimension) is input-only and can possibly take advantage of this mechanism. So instead of having a special carveout for all Compat extensions, we just need one carveout for the SType for textureBindingViewDimension. As far as I know, no one has implemented this special carveout (most or all current implementations want to support Compat), but to be safe we just say the 0x0002 block is never to be used for anything.
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| | Standard | (none) | `0x0000_????` | Extensions standardized in webgpu.h | ||
| | Compatibility Mode | *TBD* | `0x0002_????` | **Special:** implementations that don't support Compatibility Mode must ignore any chained structs with @ref WGPUSType values in this block, instead of erroring. This block must only be used for Compat additions that can be ignored without affecting the semantics of a non-erroring program. | ||
| | *(Reserved)* | - | `0x0001_????` | Reserved for future use | ||
| | *(Not used)* | - | `0x0002_????` | Do not use this block (historical) |
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Maybe we could just mark it as reserved since noone used it before?
lokokung
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Feb 23, 2026
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There are only two compat extensions (CompatibilityModeLimits and textureBindingViewDimension). Only one of them
(textureBindingViewDimension) is input-only and can possibly take advantage of this mechanism.
So instead of having a special carveout for all Compat extensions, we just need one carveout for the SType for textureBindingViewDimension.
As far as I know, no one has implemented this special carveout (most or all current implementations want to support Compat), but to be safe just say the 0x0002 block is never to be used for anything.
Fixed #547
CC #470