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7dc901fa4f
The tool was getting slow, due to the number of branches being examined. M96 is the latest stable release. We aren't applying fixes to this or older branches. Also avoids an issue where the M95 branch was missing a cherry-pick, which the tool wanted to merge with each run. Change-Id: I8a8b1466c10633d9539725cd4f9b1b0514e41e93 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/75067 Auto-Submit: Ben Clayton <bclayton@google.com> Kokoro: Kokoro <noreply+kokoro@google.com> Reviewed-by: James Price <jrprice@google.com> Commit-Queue: James Price <jrprice@google.com>
78 lines
3.8 KiB
Markdown
78 lines
3.8 KiB
Markdown
# Tint changes during Origin Trial
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## Changes for M99
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### Deprecated Features
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The following features have been deprecated and will be removed in M102:
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* The `[[block]]` attribute has been deprecated. [tint:1324](https://crbug.com/tint/1324)
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* `elseif` has been replaced with `else if` [tint:1289](https://crbug.com/tint/1289)
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### New Features
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* Vector and matrix element type can now be inferred from constructor argument types. [tint:1334](https://crbug.com/tint/1334)
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* Added builtins `degrees()` and `radians()` for converting between degrees and radians. [tint:1329](https://crbug.com/tint/1329)
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## Changes for M98
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### Breaking Changes
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* Taking the address of a vector component is no longer allowed.
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* Module-scope declarations can no longer alias a builtin name. [tint:1318](https://crbug.com/tint/1318)
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* It is now an error to call a function either directly or transitively, from a loop continuing block, that uses `discard`. [tint:1302](https://crbug.com/tint/1302)
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### Deprecated Features
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* The `isNan()`, `isInf()`, `isFinite()` and `isNormal()` builtins has been deprecated and will be removed in M101. [tint:1312](https://crbug.com/tint/1312)
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### New Features
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* New texture gather builtins: `textureGather()` and `textureGatherCompare()`. [tint:1330](https://crbug.com/tint/1330)
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* Shadowing is now fully supported. [tint:819](https://crbug.com/tint/819)
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* The `dot()` builtin now supports integer vector types.
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* Identifiers can now start with a single leading underscore. [tint:1292](https://crbug.com/tint/1292)
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* Control flow analysis has been improved, and functions no longer need to `return` if the statement is unreachable. [tint:1302](https://crbug.com/tint/1302)
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* Unreachable statements now produce a warning instead of an error, to allow WGSL code to be updated to the new analysis behavior. These warnings may become errors in the future [gpuweb#2378](https://github.com/gpuweb/gpuweb/issues/2378)
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### Fixes
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* Fixed an issue where using a module-scoped `let` in a `workgroup_size` may result in a compilation error. [tint:1320](https://crbug.com/tint/1320)
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## Changes for M97
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### Breaking Changes
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* Deprecated `modf()` and `frexp()` builtin overloads that take a pointer second parameter have been removed.
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* Deprecated texture builtin functions that accepted a `read` access controlled storage texture have been removed.
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* Storage textures must now only use the `write` access control.
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### Deprecated Features
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* The `ignore()` builtin has been replaced with phony-assignment. [gpuweb#2127](https://github.com/gpuweb/gpuweb/pull/2127)
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### New Features
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* `any()` and `all()` now support a `bool` parameter. These simply return the passed argument. [tint:1253](https://crbug.com/tint/1253)
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* Call statements may now include functions that return a value (`ignore()` is no longer needed).
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* The `interpolate(flat)` attribute can now be specified on integral user-defined IO. It will eventually become an error to define integral user-defined IO without this attribute.
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* Matrix construction from scalar element values is now supported.
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### Fixes
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* Swizzling of `vec3` types in `storage` and `uniform` buffers has been fixed for Metal 1.x. [tint:1249](https://crbug.com/tint/1249)
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* Calling a function that returns an unused value no longer produces an FXC compilation error. [tint:1259](https://crbug.com/tint/1259)
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* `abs()` fixed for unsigned integers on SPIR-V backend
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## Changes for M95
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### New Features
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* The size of an array can now be defined using a non-overridable module-scope constant
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* The `num_workgroups` builtin is now supported.
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### Fixes
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* Hex floats: now correctly errors when the magnitude is non-zero, and the exponent would cause overflow. [tint:1150](https://crbug.com/tint/1150), [tint:1166](https://crbug.com/tint/1166)
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* Identifiers beginning with an underscore are now correctly rejected. [tint:1179](https://crbug.com/tint/1179)
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