[webkit-changes] [WebKit/WebKit] fc2ee1: [WGSL] shader, execution, expression, call, builtin, ro...

[Tadeu Zagallo]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: fc2ee18b7d41347711cde7de48a6e99888ddbde0
      https://github.com/WebKit/WebKit/commit/fc2ee18b7d41347711cde7de48a6e99888ddbde0
  Author: Tadeu Zagallo <tzagallo at apple.com>
  Date:   2024-01-11 (Thu, 11 Jan 2024)

  Changed paths:
    M Source/WebGPU/WGSL/ConstantFunctions.h
    M Source/WebGPU/WGSL/Metal/MetalFunctionWriter.cpp

  Log Message:
  -----------
  [WGSL] shader,execution,expression,call,builtin,round:* is failing
https://bugs.webkit.org/show_bug.cgi?id=267343
rdar://120784372

Reviewed by Mike Wyrzykowski.

Both the constant and runtime version of round were incorrect. The constant version
failed for negative with a .5 fractional part and the runtime version was using
Metal's `round`, which doesn't not match WGSL's behavior. Instead we use rint for
both.

* Source/WebGPU/WGSL/ConstantFunctions.h:
* Source/WebGPU/WGSL/Metal/MetalFunctionWriter.cpp:
(WGSL::Metal::FunctionDefinitionWriter::visit):

Canonical link: https://commits.webkit.org/272902@main