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export const description = `
Execution Tests for the u32 conversion operations
`;
import { makeTestGroup } from '../../../../../common/framework/test_group.js';
import { GPUTest } from '../../../../gpu_test.js';
import { kValue } from '../../../../util/constants.js';
import {
bool,
f32,
f16,
i32,
TypeBool,
TypeF32,
TypeF16,
TypeI32,
TypeU32,
u32,
} from '../../../../util/conversion.js';
import {
fullF32Range,
fullF16Range,
fullI32Range,
fullU32Range,
quantizeToF32,
quantizeToF16,
} from '../../../../util/math.js';
import { reinterpretI32AsU32 } from '../../../../util/reinterpret.js';
import { makeCaseCache } from '../case_cache.js';
import { allInputSources, run, ShaderBuilder } from '../expression.js';
import { unary } from './unary.js';
export const g = makeTestGroup(GPUTest);
export const d = makeCaseCache('unary/u32_conversion', {
bool: () => {
return [
{ input: bool(true), expected: u32(1) },
{ input: bool(false), expected: u32(0) },
];
},
u32: () => {
return fullU32Range().map(u => {
return { input: u32(u), expected: u32(u) };
});
},
i32: () => {
return fullI32Range().map(i => {
return { input: i32(i), expected: u32(reinterpretI32AsU32(i)) };
});
},
f32: () => {
return fullF32Range().map(f => {
// Handles zeros, subnormals, and negatives
if (f < 1.0) {
return { input: f32(f), expected: u32(0) };
}
if (f >= kValue.u32.max) {
return { input: f32(f), expected: u32(kValue.u32.max) };
}
// All f32 no larger than 2^24 has a precise interger part and a fractional part, just need
// to trunc towards 0 for the result integer.
if (f <= 2 ** 24) {
return { input: f32(f), expected: u32(Math.floor(f)) };
}
// All f32s between 2 ** 24 and kValue.u32.max are integers, so in theory
// one could use them directly, expect that number is actually f64
// internally, so they need to be quantized to f32 first.
// Cannot just use floor here, since that might produce a u32 value that
// is precise in f64, but not in f32.
return { input: f32(f), expected: u32(quantizeToF32(f)) };
});
},
f16: () => {
// Note that all positive finite f16 values are in range of u32.
return fullF16Range().map(f => {
// Handles zeros, subnormals, and negatives
if (f < 1.0) {
return { input: f16(f), expected: u32(0) };
}
// All f16 no larger than <= 2^12 has a precise interger part and a fractional part, just need
// to trunc towards 0 for the result integer.
if (f <= 2 ** 12) {
return { input: f16(f), expected: u32(Math.trunc(f)) };
}
// All f16s larger than 2 ** 12 are integers, so in theory one could use them directly, expect
// that number is actually f64 internally, so they need to be quantized to f16 first.
// Cannot just use trunc here, since that might produce a u32 value that is precise in f64,
// but not in f16.
return { input: f16(f), expected: u32(quantizeToF16(f)) };
});
},
});
/** Generate a ShaderBuilder based on how the test case is to be vectorized */
function vectorizeToExpression(vectorize: undefined | 2 | 3 | 4): ShaderBuilder {
return vectorize === undefined ? unary('u32') : unary(`vec${vectorize}<u32>`);
}
g.test('bool')
.specURL('https://www.w3.org/TR/WGSL/#value-constructor-builtin-function')
.desc(
`
u32(e), where e is a bool
The result is 1u if e is true and 0u otherwise
`
)
.params(u =>
u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
)
.fn(async t => {
const cases = await d.get('bool');
await run(t, vectorizeToExpression(t.params.vectorize), [TypeBool], TypeU32, t.params, cases);
});
g.test('u32')
.specURL('https://www.w3.org/TR/WGSL/#bool-builtin')
.desc(
`
u32(e), where e is a u32
Identity operation
`
)
.params(u =>
u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
)
.fn(async t => {
const cases = await d.get('u32');
await run(t, vectorizeToExpression(t.params.vectorize), [TypeU32], TypeU32, t.params, cases);
});
g.test('i32')
.specURL('https://www.w3.org/TR/WGSL/#value-constructor-builtin-function')
.desc(
`
u32(e), where e is a i32
Reinterpretation of bits
`
)
.params(u =>
u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
)
.fn(async t => {
const cases = await d.get('i32');
await run(t, vectorizeToExpression(t.params.vectorize), [TypeI32], TypeU32, t.params, cases);
});
g.test('f32')
.specURL('https://www.w3.org/TR/WGSL/#value-constructor-builtin-function')
.desc(
`
u32(e), where e is a f32
e is converted to u32, rounding towards zero
`
)
.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, vectorizeToExpression(t.params.vectorize), [TypeF32], TypeU32, t.params, cases);
});
g.test('f16')
.specURL('https://www.w3.org/TR/WGSL/#value-constructor-builtin-function')
.desc(
`
u32(e), where e is a f16
e is converted to u32, rounding towards zero
`
)
.params(u =>
u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
)
.beforeAllSubcases(t => {
t.selectDeviceOrSkipTestCase('shader-f16');
})
.fn(async t => {
const cases = await d.get('f16');
await run(t, vectorizeToExpression(t.params.vectorize), [TypeF16], TypeU32, t.params, cases);
});
g.test('abstract_int')
.specURL('https://www.w3.org/TR/WGSL/#value-constructor-builtin-function')
.desc(
`
u32(e), where e is an AbstractInt
Identity operation if the e can be represented in u32, otherwise it produces a shader-creation error
`
)
.params(u =>
u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
)
.unimplemented();
|
