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import { keysOf } from '../../common/util/data_tables.js';
import { assert } from '../../common/util/util.js';
import { align } from '../util/math.js';
const kArrayLength = 3;
export type ContainerType = 'scalar' | 'vector' | 'matrix' | 'atomic' | 'array';
export type ScalarType = 'i32' | 'u32' | 'f32' | 'bool';
export const HostSharableTypes = ['i32', 'u32', 'f32'] as const;
/** Info for each plain scalar type. */
export const kScalarTypeInfo = /* prettier-ignore */ {
'i32': { layout: { alignment: 4, size: 4 }, supportsAtomics: true, arrayLength: 1, innerLength: 0 },
'u32': { layout: { alignment: 4, size: 4 }, supportsAtomics: true, arrayLength: 1, innerLength: 0 },
'f32': { layout: { alignment: 4, size: 4 }, supportsAtomics: false, arrayLength: 1, innerLength: 0 },
'bool': { layout: undefined, supportsAtomics: false, arrayLength: 1, innerLength: 0 },
} as const;
/** List of all plain scalar types. */
export const kScalarTypes = keysOf(kScalarTypeInfo);
/** Info for each vecN<> container type. */
export const kVectorContainerTypeInfo = /* prettier-ignore */ {
'vec2': { layout: { alignment: 8, size: 8 }, arrayLength: 2 , innerLength: 0 },
'vec3': { layout: { alignment: 16, size: 12 }, arrayLength: 3 , innerLength: 0 },
'vec4': { layout: { alignment: 16, size: 16 }, arrayLength: 4 , innerLength: 0 },
} as const;
/** List of all vecN<> container types. */
export const kVectorContainerTypes = keysOf(kVectorContainerTypeInfo);
/** Info for each matNxN<> container type. */
export const kMatrixContainerTypeInfo = /* prettier-ignore */ {
'mat2x2': { layout: { alignment: 8, size: 16 }, arrayLength: 2, innerLength: 2 },
'mat3x2': { layout: { alignment: 8, size: 24 }, arrayLength: 3, innerLength: 2 },
'mat4x2': { layout: { alignment: 8, size: 32 }, arrayLength: 4, innerLength: 2 },
'mat2x3': { layout: { alignment: 16, size: 32 }, arrayLength: 2, innerLength: 3 },
'mat3x3': { layout: { alignment: 16, size: 48 }, arrayLength: 3, innerLength: 3 },
'mat4x3': { layout: { alignment: 16, size: 64 }, arrayLength: 4, innerLength: 3 },
'mat2x4': { layout: { alignment: 16, size: 32 }, arrayLength: 2, innerLength: 4 },
'mat3x4': { layout: { alignment: 16, size: 48 }, arrayLength: 3, innerLength: 4 },
'mat4x4': { layout: { alignment: 16, size: 64 }, arrayLength: 4, innerLength: 4 },
} as const;
/** List of all matNxN<> container types. */
export const kMatrixContainerTypes = keysOf(kMatrixContainerTypeInfo);
export type StorageClass = 'storage' | 'uniform' | 'private' | 'function' | 'workgroup';
/** List of texel formats and their shader representation */
export const TexelFormats = [
{ format: 'rgba8unorm', _shaderType: 'f32' },
{ format: 'rgba8snorm', _shaderType: 'f32' },
{ format: 'rgba8uint', _shaderType: 'u32' },
{ format: 'rgba8sint', _shaderType: 'i32' },
{ format: 'rgba16uint', _shaderType: 'u32' },
{ format: 'rgba16sint', _shaderType: 'i32' },
{ format: 'rgba16float', _shaderType: 'f32' },
{ format: 'r32uint', _shaderType: 'u32' },
{ format: 'r32sint', _shaderType: 'i32' },
{ format: 'r32float', _shaderType: 'f32' },
{ format: 'rg32uint', _shaderType: 'u32' },
{ format: 'rg32sint', _shaderType: 'i32' },
{ format: 'rg32float', _shaderType: 'f32' },
{ format: 'rgba32uint', _shaderType: 'i32' },
{ format: 'rgba32sint', _shaderType: 'i32' },
{ format: 'rgba32float', _shaderType: 'f32' },
] as const;
/**
* Generate a bunch types (vec, mat, sized/unsized array) for testing.
*/
export function* generateTypes({
storageClass,
baseType,
containerType,
isAtomic = false,
}: {
storageClass: StorageClass;
/** Base scalar type (i32/u32/f32/bool). */
baseType: ScalarType;
/** Container type (scalar/vector/matrix/array) */
containerType: ContainerType;
/** Whether to wrap the baseType in `atomic<>`. */
isAtomic?: boolean;
}) {
const scalarInfo = kScalarTypeInfo[baseType];
if (isAtomic) {
assert(scalarInfo.supportsAtomics, 'type does not support atomics');
}
const scalarType = isAtomic ? `atomic<${baseType}>` : baseType;
// Storage and uniform require host-sharable types.
if (storageClass === 'storage' || storageClass === 'uniform') {
assert(isHostSharable(baseType), 'type ' + baseType.toString() + ' is not host sharable');
}
// Scalar types
if (containerType === 'scalar') {
yield {
type: `${scalarType}`,
_kTypeInfo: {
elementBaseType: `${scalarType}`,
...scalarInfo,
},
};
}
// Vector types
if (containerType === 'vector') {
for (const vectorType of kVectorContainerTypes) {
yield {
type: `${vectorType}<${scalarType}>`,
_kTypeInfo: { elementBaseType: baseType, ...kVectorContainerTypeInfo[vectorType] },
};
}
}
if (containerType === 'matrix') {
// Matrices can only be f32.
if (baseType === 'f32') {
for (const matrixType of kMatrixContainerTypes) {
const matrixInfo = kMatrixContainerTypeInfo[matrixType];
yield {
type: `${matrixType}<${scalarType}>`,
_kTypeInfo: {
elementBaseType: `vec${matrixInfo.innerLength}<${scalarType}>`,
...matrixInfo,
},
};
}
}
}
// Array types
if (containerType === 'array') {
const arrayTypeInfo = {
elementBaseType: `${baseType}`,
arrayLength: kArrayLength,
layout: scalarInfo.layout
? {
alignment: scalarInfo.layout.alignment,
size:
storageClass === 'uniform'
? // Uniform storage class must have array elements aligned to 16.
kArrayLength *
arrayStride({
...scalarInfo.layout,
alignment: 16,
})
: kArrayLength * arrayStride(scalarInfo.layout),
}
: undefined,
};
// Sized
if (storageClass === 'uniform') {
yield {
type: `array<vec4<${scalarType}>,${kArrayLength}>`,
_kTypeInfo: arrayTypeInfo,
};
} else {
yield { type: `array<${scalarType},${kArrayLength}>`, _kTypeInfo: arrayTypeInfo };
}
// Unsized
if (storageClass === 'storage') {
yield { type: `array<${scalarType}>`, _kTypeInfo: arrayTypeInfo };
}
}
function arrayStride(elementLayout: { size: number; alignment: number }) {
return align(elementLayout.size, elementLayout.alignment);
}
function isHostSharable(baseType: ScalarType) {
for (const sharableType of HostSharableTypes) {
if (sharableType === baseType) return true;
}
return false;
}
}
/** Atomic access requires scalar/array container type and storage/workgroup memory. */
export function supportsAtomics(p: {
storageClass: string;
storageMode: string | undefined;
access: string;
containerType: ContainerType;
}) {
return (
((p.storageClass === 'storage' && p.storageMode === 'read_write') ||
p.storageClass === 'workgroup') &&
(p.containerType === 'scalar' || p.containerType === 'array')
);
}
/** Generates an iterator of supported base types (i32/u32/f32/bool) */
export function* supportedScalarTypes(p: { isAtomic: boolean; storageClass: string }) {
for (const scalarType of kScalarTypes) {
const info = kScalarTypeInfo[scalarType];
// Test atomics only on supported scalar types.
if (p.isAtomic && !info.supportsAtomics) continue;
// Storage and uniform require host-sharable types.
const isHostShared = p.storageClass === 'storage' || p.storageClass === 'uniform';
if (isHostShared && info.layout === undefined) continue;
yield scalarType;
}
}
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