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export const description = `
Validation tests for arrayLength builtins.
`;
import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
import { ShaderValidationTest } from '../../../shader_validation_test.js';
export const g = makeTestGroup(ShaderValidationTest);
g.test('bool_type')
.specURL('https://www.w3.org/TR/WGSL/#arrayLength-builtin')
.desc(
`
arrayLength accepts only runtime-sized arrays
`
)
.fn(t => {
const code = `
@compute @workgroup_size(1)
fn main() {
var b = true;
_ = arrayLength(&b);
}`;
t.expectCompileResult(false, code);
});
const atomic_types = ['u32', 'i32'].map(j => `atomic<${j}>`);
const vec_types = [2, 3, 4]
.map(i => ['i32', 'u32', 'f32', 'f16'].map(j => `vec${i}<${j}>`))
.reduce((a, c) => a.concat(c), []);
const f32_matrix_types = [2, 3, 4]
.map(i => [2, 3, 4].map(j => `mat${i}x${j}f`))
.reduce((a, c) => a.concat(c), []);
const f16_matrix_types = [2, 3, 4]
.map(i => [2, 3, 4].map(j => `mat${i}x${j}<f16>`))
.reduce((a, c) => a.concat(c), []);
g.test('type')
.specURL('https://www.w3.org/TR/WGSL/#arrayLength-builtin')
.desc(
`
arrayLength accepts only runtime-sized arrays
`
)
.params(u =>
u.combine('type', [
'i32',
'u32',
'f32',
'f16',
...f32_matrix_types,
...f16_matrix_types,
...vec_types,
...atomic_types,
'T',
'array<i32, 2>',
'array<i32>',
])
)
.beforeAllSubcases(t => {
if (t.params.type.includes('f16')) {
t.selectDeviceOrSkipTestCase('shader-f16');
}
})
.fn(t => {
const code = `
struct T {
b: i32,
}
struct S {
ary: ${t.params.type}
}
@group(0) @binding(0) var<storage, read_write> items: S;
@compute @workgroup_size(1)
fn main() {
_ = arrayLength(&items.ary);
}`;
t.expectCompileResult(t.params.type === 'array<i32>', code);
});
// Note, the `write` case actually fails because you can't declare a storage buffer of
// access_mode `write`.
g.test('access_mode')
.specURL('https://www.w3.org/TR/WGSL/#arrayLength-builtin')
.desc(
`
arrayLength runtime-sized array must have an access_mode of read or read_write
`
)
.params(u => u.combine('mode', ['read', 'read_write', 'write']))
.fn(t => {
const code = `
struct S {
ary: array<i32>,
}
@group(0) @binding(0) var<storage, ${t.params.mode}> items: S;
@compute @workgroup_size(1)
fn main() {
_ = arrayLength(&items.ary);
}`;
t.expectCompileResult(t.params.mode !== 'write', code);
});
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