1 files changed, 37 insertions, 0 deletions
diff --git a/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/textureNumSamples.spec.ts b/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/textureNumSamples.spec.ts
new file mode 100644
index 0000000000..26bda6cd48
--- /dev/null
+++ b/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/textureNumSamples.spec.ts
@@ -0,0 +1,37 @@
+export const description = `
+Execution tests for the 'textureNumSamples' builtin function
+
+Returns the number samples per texel in a multisampled texture.
+`;
+
+import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
+import { GPUTest } from '../../../../../gpu_test.js';
+
+export const g = makeTestGroup(GPUTest);
+
+g.test('sampled')
+  .specURL('https://www.w3.org/TR/WGSL/#texturenumsamples')
+  .desc(
+    `
+T, a sampled type.
+
+fn textureNumSamples(t: texture_multisampled_2d<T>) -> u32
+
+Parameters
+ * t The multisampled texture.
+`
+  )
+  .params(u => u.beginSubcases().combine('sampled_type', ['f32-only', 'i32', 'u32'] as const))
+  .unimplemented();
+
+g.test('depth')
+  .specURL('https://www.w3.org/TR/WGSL/#texturenumsamples')
+  .desc(
+    `
+fn textureNumSamples(t: texture_depth_multisampled_2d) -> u32
+
+Parameters
+ * t The multisampled texture.
+`
+  )
+  .unimplemented();