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export const description = `
Execution tests for the 'faceForward' builtin function
T is vecN<AbstractFloat>, vecN<f32>, or vecN<f16>
@const fn faceForward(e1: T ,e2: T ,e3: T ) -> T
Returns e1 if dot(e2,e3) is negative, and -e1 otherwise.
`;
import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
import { GPUTest } from '../../../../../gpu_test.js';
import { anyOf } from '../../../../../util/compare.js';
import { f32, TypeF32, TypeVec, Vector } from '../../../../../util/conversion.js';
import { F32Vector, faceForwardIntervals } from '../../../../../util/f32_interval.js';
import { cartesianProduct, quantizeToF32, sparseVectorF32Range } from '../../../../../util/math.js';
import { makeCaseCache } from '../../case_cache.js';
import { allInputSources, Case, IntervalFilter, run } from '../../expression.js';
import { builtin } from './builtin.js';
export const g = makeTestGroup(GPUTest);
// Using a bespoke implementation of make*Case and generate*Cases here
// since faceForwardIntervals is the only builtin with the API signature
// (vec, vec, vec) -> vec
//
// Additionally faceForward has significant complexities around it due to the
// fact that `dot` is calculated in it s operation, but the result of dot isn't
// used to calculate the builtin's result.
/**
* @returns a Case for `faceForward`
* @param x the `x` param for the case
* @param y the `y` param for the case
* @param z the `z` param for the case
* @param check what interval checking to apply
* */
function makeCaseF32(
x: number[],
y: number[],
z: number[],
check: IntervalFilter
): Case | undefined {
x = x.map(quantizeToF32);
y = y.map(quantizeToF32);
z = z.map(quantizeToF32);
const x_f32 = x.map(f32);
const y_f32 = y.map(f32);
const z_f32 = z.map(f32);
const results = faceForwardIntervals(x, y, z);
if (check === 'f32-only' && results.some(r => r === undefined)) {
return undefined;
}
// Stripping the undefined results, since undefined is used to signal that an OOB
// could occur within the calculation that isn't reflected in the result
// intervals.
const define_results = results.filter((r): r is F32Vector => r !== undefined);
return {
input: [new Vector(x_f32), new Vector(y_f32), new Vector(z_f32)],
expected: anyOf(...define_results),
};
}
/**
* @returns an array of Cases for `faceForward`
* @param xs array of inputs to try for the `x` param
* @param ys array of inputs to try for the `y` param
* @param zs array of inputs to try for the `z` param
* @param check what interval checking to apply
*/
function generateCasesF32(
xs: number[][],
ys: number[][],
zs: number[][],
check: IntervalFilter
): Case[] {
// Cannot use `cartesianProduct` here due to heterogeneous param types
return cartesianProduct(xs, ys, zs)
.map(e => makeCaseF32(e[0], e[1], e[2], check))
.filter((c): c is Case => c !== undefined);
}
export const d = makeCaseCache('faceForward', {
f32_vec2_const: () => {
return generateCasesF32(
sparseVectorF32Range(2),
sparseVectorF32Range(2),
sparseVectorF32Range(2),
'f32-only'
);
},
f32_vec2_non_const: () => {
return generateCasesF32(
sparseVectorF32Range(2),
sparseVectorF32Range(2),
sparseVectorF32Range(2),
'unfiltered'
);
},
f32_vec3_const: () => {
return generateCasesF32(
sparseVectorF32Range(3),
sparseVectorF32Range(3),
sparseVectorF32Range(3),
'f32-only'
);
},
f32_vec3_non_const: () => {
return generateCasesF32(
sparseVectorF32Range(3),
sparseVectorF32Range(3),
sparseVectorF32Range(3),
'unfiltered'
);
},
f32_vec4_const: () => {
return generateCasesF32(
sparseVectorF32Range(4),
sparseVectorF32Range(4),
sparseVectorF32Range(4),
'f32-only'
);
},
f32_vec4_non_const: () => {
return generateCasesF32(
sparseVectorF32Range(4),
sparseVectorF32Range(4),
sparseVectorF32Range(4),
'unfiltered'
);
},
});
g.test('abstract_float')
.specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
.desc(`abstract float tests`)
.params(u => u.combine('inputSource', allInputSources).combine('vectorize', [2, 3, 4] as const))
.unimplemented();
g.test('f32_vec2')
.specURL('https://www.w3.org/TR/WGSL/#numeric-builtin-functions')
.desc(`f32 tests using vec2s`)
.params(u => u.combine('inputSource', allInputSources))
.fn(async t => {
const cases = await d.get(
t.params.inputSource === 'const' ? 'f32_vec2_const' : 'f32_vec2_non_const'
);
await run(
t,
builtin('faceForward'),
[TypeVec(2, TypeF32), TypeVec(2, TypeF32), TypeVec(2, TypeF32)],
TypeVec(2, TypeF32),
t.params,
cases
);
});
g.test('f32_vec3')
.specURL('https://www.w3.org/TR/WGSL/#numeric-builtin-functions')
.desc(`f32 tests using vec3s`)
.params(u => u.combine('inputSource', allInputSources))
.fn(async t => {
const cases = await d.get(
t.params.inputSource === 'const' ? 'f32_vec3_const' : 'f32_vec3_non_const'
);
await run(
t,
builtin('faceForward'),
[TypeVec(3, TypeF32), TypeVec(3, TypeF32), TypeVec(3, TypeF32)],
TypeVec(3, TypeF32),
t.params,
cases
);
});
g.test('f32_vec4')
.specURL('https://www.w3.org/TR/WGSL/#numeric-builtin-functions')
.desc(`f32 tests using vec4s`)
.params(u => u.combine('inputSource', allInputSources))
.fn(async t => {
const cases = await d.get(
t.params.inputSource === 'const' ? 'f32_vec4_const' : 'f32_vec4_non_const'
);
await run(
t,
builtin('faceForward'),
[TypeVec(4, TypeF32), TypeVec(4, TypeF32), TypeVec(4, TypeF32)],
TypeVec(4, TypeF32),
t.params,
cases
);
});
g.test('f16')
.specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
.desc(`f16 tests`)
.params(u => u.combine('inputSource', allInputSources).combine('vectorize', [2, 3, 4] as const))
.unimplemented();
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