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dawn-cmake/docs/origin-trial-changes.md
James Price a41694e9a3 validation: Allow interpolate(flat) on integral IO 
Produce a warning if the attribute is missing for integral vertex
outputs or fragment inputs. This will become an error in the future,
as per the WGSL spec.

Add the attribute to E2E tests.

Bug: tint:1224
Change-Id: Ia1f353f36cb7db516cf9e8b4877423dec3b3e711
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/67160
Auto-Submit: James Price <jrprice@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
2021-10-21 23:08:44 +00:00

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Tint changes during Origin Trial

Changes for M97

Breaking Changes

  • Deprecated modf() and frexp() builtin overloads that take a pointer second parameter have been removed.
  • Deprecated texture builtin functions that accepted a read access controlled storage texture have been removed.
  • Storage textures must now only use the write access control.

New Features

  • any() and all() now support a bool parameter. These simply return the passed argument. tint:1253
  • Call statements may now include functions that return a value (ignore() is no longer needed).
  • 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.

Fixes

  • Swizzling of vec3 types in storage and uniform buffers has been fixed for Metal 1.x. tint:1249

Changes for M95

New Features

  • The size of an array can now be defined using a non-overridable module-scope constant
  • The num_workgroups builtin is now supported.

Fixes

  • Hex floats: now correctly errors when the magnitude is non-zero, and the exponent would cause overflow. tint:1150, tint:1166
  • Identifiers beginning with an underscore are now correctly rejected. tint:1179
  • abs() fixed for unsigned integers on SPIR-V backend tint:1179