1 files changed, 56 insertions, 0 deletions
diff --git a/testing/web-platform/mozilla/tests/webgpu/webgpu/shader/execution/expression/call/builtin/unpack4xI8.spec.js b/testing/web-platform/mozilla/tests/webgpu/webgpu/shader/execution/expression/call/builtin/unpack4xI8.spec.js
new file mode 100644
index 0000000000..30bd91d235
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/webgpu/shader/execution/expression/call/builtin/unpack4xI8.spec.js
@@ -0,0 +1,56 @@
+/**
+* AUTO-GENERATED - DO NOT EDIT. Source: https://github.com/gpuweb/cts
+**/export const description = `
+Execution tests for the 'unpack4xI8' builtin function
+
+@const fn unpack4xI8(e: u32) -> vec4<i32>
+e is interpreted as a vector with four 8-bit signed integer components. Unpack e into a vec4<i32>
+with sign extension.
+`;import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
+import { GPUTest } from '../../../../../gpu_test.js';
+import { u32, toVector, i32, Type } from '../../../../../util/conversion.js';
+
+import { allInputSources, run } from '../../expression.js';
+
+import { builtin } from './builtin.js';
+
+export const g = makeTestGroup(GPUTest);
+
+g.test('basic').
+specURL('https://www.w3.org/TR/WGSL/#unpack4xI8-builtin').
+desc(
+  `
+@const fn unpack4xI8(e: u32) -> vec4<i32>
+  `
+).
+params((u) => u.combine('inputSource', allInputSources)).
+fn(async (t) => {
+  const cfg = t.params;
+
+  const unpack4xI8 = (e) => {
+    const result = [0, 0, 0, 0];
+    for (let i = 0; i < 4; ++i) {
+      let intValue = e >> 8 * i & 0xff;
+      if (intValue > 127) {
+        intValue -= 256;
+      }
+      result[i] = intValue;
+    }
+    return result;
+  };
+
+  const testInputs = [
+  0, 0x01020304, 0xfcfdfeff, 0x040302ff, 0x0403fe01, 0x04fd0201, 0xfc030201, 0xfcfdfe01,
+  0xfcfd02ff, 0xfc03feff, 0x04fdfeff, 0x0403feff, 0x04fd02ff, 0xfc0302ff, 0x04fdfe01,
+  0xfc03fe01, 0xfcfd0201, 0x80817f7e];
+
+
+  const makeCase = (e) => {
+    return { input: [u32(e)], expected: toVector(unpack4xI8(e), i32) };
+  };
+  const cases = testInputs.flatMap((v) => {
+    return [makeCase(v)];
+  });
+
+  await run(t, builtin('unpack4xI8'), [Type.u32], Type.vec4i, cfg, cases);
+});
+\ No newline at end of file