dawn-cmake/test/tint/extensions/parsing/duplicated_extensions.wgsl

// Enable a void internal extension for multiple times
enable f16;
enable f16;
enable f16;

@stage(fragment)
fn main() -> @location(0) vec4<f32> {
    return vec4<f32>(0.1, 0.2, 0.3, 0.4);
}
tint: Refactor Extensions / Enables. * Extract ast::Enable::ExtensionKind to ast::Extension. * Move the parsing out of ast::Enable and next to ast/extension.h * Change the ast::Enable constructor to take the Extension, instead of a std::string. It's the WGSL parser's responsibility to parse, not the AST nodes. * Add ProgramBuilder::Enable() helper. * Keep ast::Module simple - keep track of the declared AST Enable nodes, don't do any deduplicating of the enabled extensions. * Add the de-duplicated ast::Extensions to the sem::Module. * Remove the kInternalExtensionForTesting enum value - we have kF16 now, which can be used instead for testing. * Rename kNoExtension to kNone. Bug: tint:1472 Change-Id: I9af635e95d36991ea468e6e0bf6798bb50937edc Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/90523 Reviewed-by: Dan Sinclair <dsinclair@chromium.org> Commit-Queue: Ben Clayton <bclayton@google.com> Kokoro: Kokoro <noreply+kokoro@google.com> 2022-05-18 22:41:48 +00:00			`// Enable a void internal extension for multiple times`
			`enable f16;`
			`enable f16;`
			`enable f16;`

			`@stage(fragment)`
			`fn main() -> @location(0) vec4<f32> {`
			`return vec4<f32>(0.1, 0.2, 0.3, 0.4);`
			`}`