1 files changed, 100 insertions, 0 deletions
diff --git a/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/saturate.spec.ts b/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/saturate.spec.ts
new file mode 100644
index 0000000000..2f16502921
--- /dev/null
+++ b/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/saturate.spec.ts
@@ -0,0 +1,100 @@
+export const description = `
+Execution tests for the 'saturate' builtin function
+
+S is AbstractFloat, f32, or f16
+T is S or vecN<S>
+@const fn saturate(e: T) -> T
+Returns clamp(e, 0.0, 1.0). Component-wise when T is a vector.
+`;
+
+import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
+import { GPUTest } from '../../../../../gpu_test.js';
+import { TypeAbstractFloat, TypeF16, TypeF32 } from '../../../../../util/conversion.js';
+import { FP } from '../../../../../util/floating_point.js';
+import { fullF16Range, fullF32Range, fullF64Range, linearRange } from '../../../../../util/math.js';
+import { makeCaseCache } from '../../case_cache.js';
+import { allInputSources, onlyConstInputSource, run } from '../../expression.js';
+
+import { abstractBuiltin, builtin } from './builtin.js';
+
+export const g = makeTestGroup(GPUTest);
+
+export const d = makeCaseCache('saturate', {
+  f32: () => {
+    return FP.f32.generateScalarToIntervalCases(
+      [
+        // Non-clamped values
+        ...linearRange(0.0, 1.0, 20),
+        ...fullF32Range(),
+      ],
+      'unfiltered',
+      FP.f32.saturateInterval
+    );
+  },
+  f16: () => {
+    return FP.f16.generateScalarToIntervalCases(
+      [
+        // Non-clamped values
+        ...linearRange(0.0, 1.0, 20),
+        ...fullF16Range(),
+      ],
+      'unfiltered',
+      FP.f16.saturateInterval
+    );
+  },
+  abstract: () => {
+    return FP.abstract.generateScalarToIntervalCases(
+      [
+        // Non-clamped values
+        ...linearRange(0.0, 1.0, 20),
+        ...fullF64Range(),
+      ],
+      'unfiltered',
+      FP.abstract.saturateInterval
+    );
+  },
+});
+
+g.test('abstract_float')
+  .specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
+  .desc(`abstract float tests`)
+  .params(u =>
+    u
+      .combine('inputSource', onlyConstInputSource)
+      .combine('vectorize', [undefined, 2, 3, 4] as const)
+  )
+  .fn(async t => {
+    const cases = await d.get('abstract');
+    await run(
+      t,
+      abstractBuiltin('saturate'),
+      [TypeAbstractFloat],
+      TypeAbstractFloat,
+      t.params,
+      cases
+    );
+  });
+g.test('f32')
+  .specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
+  .desc(`f32 tests`)
+  .params(u =>
+    u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
+  )
+  .fn(async t => {
+    const cases = await d.get('f32');
+    await run(t, builtin('saturate'), [TypeF32], TypeF32, t.params, cases);
+  });
+
+g.test('f16')
+  .specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
+  .desc(`f16 tests`)
+  .params(u =>
+    u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
+  )
+  .beforeAllSubcases(t => {
+    t.selectDeviceOrSkipTestCase('shader-f16');
+  })
+  .fn(async t => {
+    const cases = await d.get('f16');
+    await run(t, builtin('saturate'), [TypeF16], TypeF16, t.params, cases);
+  });