@luma.gl/core/dist/portable/shader-block-writer.d.ts

The luma.gl core Device API

import type { CompositeUniformValue, UniformValue } from "../adapter/types/uniforms.js";
import { type ShaderBlockLayout } from "../shadertypes/shader-types/shader-block-layout.js";
/**
 * Serializes nested JavaScript uniform values according to a {@link ShaderBlockLayout}.
 */
export declare class ShaderBlockWriter {
    /** Layout metadata used to flatten and serialize values. */
    readonly layout: ShaderBlockLayout;
    /**
     * Creates a writer for a precomputed shader-block layout.
     */
    constructor(layout: ShaderBlockLayout);
    /**
     * Returns `true` if the flattened layout contains the given field.
     */
    has(name: string): boolean;
    /**
     * Returns offset and size metadata for a flattened field.
     */
    get(name: string): {
        offset: number;
        size: number;
    } | undefined;
    /**
     * Flattens nested composite values into leaf-path values understood by {@link UniformBlock}.
     *
     * Top-level values may be supplied either in nested object form matching the
     * declared composite shader types or as already-flattened leaf-path values.
     */
    getFlatUniformValues(uniformValues: Readonly<Record<string, CompositeUniformValue>>): Record<string, UniformValue>;
    /**
     * Serializes the supplied values into buffer-backed binary data.
     *
     * The returned view length matches {@link ShaderBlockLayout.byteLength}, which
     * is the exact packed size of the block.
     */
    getData(uniformValues: Readonly<Record<string, CompositeUniformValue>>): Uint8Array;
    /**
     * Recursively flattens nested values using the declared composite shader type.
     */
    private _flattenCompositeValue;
    /**
     * Expands tightly packed numeric arrays into per-element leaf fields.
     */
    private _flattenPackedArray;
    /**
     * Writes one flattened leaf value into its typed-array view.
     */
    private _writeLeafValue;
}
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