1 files changed, 73 insertions, 0 deletions
diff --git a/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/fract.spec.ts b/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/fract.spec.ts
new file mode 100644
index 0000000000..c7d0244b96
--- /dev/null
+++ b/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/fract.spec.ts
@@ -0,0 +1,73 @@
+export const description = `
+Execution tests for the 'fract' builtin function
+
+S is AbstractFloat, f32, f16
+T is S or vecN<S>
+@const fn fract(e: T ) -> T
+Returns the fractional part of e, computed as e - floor(e).
+Component-wise when T is a vector.
+`;
+
+import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
+import { GPUTest } from '../../../../../gpu_test.js';
+import { TypeF32 } from '../../../../../util/conversion.js';
+import { fractInterval } from '../../../../../util/f32_interval.js';
+import { fullF32Range } from '../../../../../util/math.js';
+import { makeCaseCache } from '../../case_cache.js';
+import { allInputSources, generateUnaryToF32IntervalCases, run } from '../../expression.js';
+
+import { builtin } from './builtin.js';
+
+export const g = makeTestGroup(GPUTest);
+
+export const d = makeCaseCache('fract', {
+  f32: () => {
+    return generateUnaryToF32IntervalCases(
+      [
+        0.5, // 0.5 -> 0.5
+        0.9, // ~0.9 -> ~0.9
+        1, // 1 -> 0
+        2, // 2 -> 0
+        1.11, // ~1.11 -> ~0.11
+        10.0001, // ~10.0001 -> ~0.0001
+        -0.1, // ~-0.1 -> ~0.9
+        -0.5, // -0.5 -> 0.5
+        -0.9, // ~-0.9 -> ~0.1
+        -1, // -1 -> 0
+        -2, // -2 -> 0
+        -1.11, // ~-1.11 -> ~0.89
+        -10.0001, // -10.0001 -> ~0.9999
+        ...fullF32Range(),
+      ],
+      'unfiltered',
+      fractInterval
+    );
+  },
+});
+
+g.test('abstract_float')
+  .specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
+  .desc(`abstract float tests`)
+  .params(u =>
+    u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
+  )
+  .unimplemented();
+
+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('fract'), [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)
+  )
+  .unimplemented();