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WasmGPU | Documentation

GlyphField.setCPUData

GlyphField.setCPUData¶

Summary¶

GlyphField.setCPUData updates cpudata state on this GlyphField and marks dependent GPU data for refresh.

Syntax¶

GlyphField.setCPUData(positions: Float32Array | null, rotations: Float32Array | null, scales: Float32Array | null, attributes: Float32Array | null, opts?: { keepCPUData?: boolean; instanceCount?: number }): void
glyphField.setCPUData(positions, rotations, scales, attributes, opts);

Parameters¶

Name	Type	Required	Description
`positions`	`Float32Array \\| null`	Yes	Packed per-instance positions.
`rotations`	`Float32Array \\| null`	Yes	Packed per-instance quaternion rotations.
`scales`	`Float32Array \\| null`	Yes	Packed per-instance scales.
`attributes`	`Float32Array \\| null`	Yes	Packed per-instance attribute values.
`opts`	`{ keepCPUData?: boolean; instanceCount?: number }`	No	Optional configuration object that customizes behavior for this call.

Returns¶

void - No return value. The call applies side effects to runtime state and/or GPU resources.

Type Details¶

SetCPUDataopts¶

type SetCPUDataopts = {

    keepCPUData?: boolean;

    instanceCount?: number;

};

SetCPUDataopts Fields¶

Name	Type	Required	Description
`keepCPUData`	`boolean`	No	When true, CPU arrays are retained after upload.
`instanceCount`	`number`	No	Number of instances represented by supplied data inputs.

Example¶

const canvas = document.querySelector("canvas");
const wgpu = await WasmGPU.create(canvas);

const glyphField = wgpu.createGlyphField({ instanceCount: 1, positions: new Float32Array([0, 0, 0, 0]), rotations: new Float32Array([0, 0, 0, 1]), scales: new Float32Array([1, 1, 1, 0]), attributes: new Float32Array([0.5, 0, 0, 0]), scaleTransform: { mode: "linear", domainMin: 0, domainMax: 1 } });
const positions = new Float32Array([0, 0, 0, 0]);
const rotations = new Float32Array([0, 0, 0, 1]);
const scales = new Float32Array([1, 1, 1, 0]);
const attributes = new Float32Array([0.5, 0, 0, 0]);
const opts = { keepCPUData: true, instanceCount: 1 };
glyphField.setCPUData(positions, rotations, scales, attributes, opts);
console.log("updated");

See Also¶