1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
export const description = `
Decomposes a 32-bit value into two 16-bit chunks, then reinterprets each chunk
as a signed normalized floating point value.
Component i of the result is max(v ÷ 32767, -1), where v is the interpretation
of bits 16×i through 16×i+15 of e as a twos-complement signed integer.
`;
import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
import { GPUTest } from '../../../../../gpu_test.js';
import { TypeF32, TypeU32, TypeVec } from '../../../../../util/conversion.js';
import { unpack2x16snormInterval } from '../../../../../util/f32_interval.js';
import { fullU32Range } from '../../../../../util/math.js';
import { makeCaseCache } from '../../case_cache.js';
import { allInputSources, generateU32ToVectorCases, run } from '../../expression.js';
import { builtin } from './builtin.js';
export const g = makeTestGroup(GPUTest);
export const d = makeCaseCache('unpack2x16snorm', {
u32_const: () => {
return generateU32ToVectorCases(fullU32Range(), 'f32-only', unpack2x16snormInterval);
},
u32_non_const: () => {
return generateU32ToVectorCases(fullU32Range(), 'unfiltered', unpack2x16snormInterval);
},
});
g.test('unpack')
.specURL('https://www.w3.org/TR/WGSL/#unpack-builtin-functions')
.desc(
`
@const fn unpack2x16snorm(e: u32) -> vec2<f32>
`
)
.params(u => u.combine('inputSource', allInputSources))
.fn(async t => {
const cases = await d.get(t.params.inputSource === 'const' ? 'u32_const' : 'u32_non_const');
await run(t, builtin('unpack2x16snorm'), [TypeU32], TypeVec(2, TypeF32), t.params, cases);
});
|
