import { DrawList } from './drawList';
import { FrameUniforms } from './frame';

export type GpuBackendType = "webgpu" | "webgl";
export type RGBA = readonly [number, number, number, number];
export interface GpuViewport {
    width: number;
    height: number;
    dpr: number;
}
export interface GpuLimits {
    maxTextureDimension2D?: number;
    maxBufferSize?: number;
    [key: string]: unknown;
}
export interface GpuBackendInfo {
    type: GpuBackendType;
    available: boolean;
    limits?: GpuLimits;
}
export type BufferId = string;
export type TextureId = string;
export type BufferUsage = "vertex" | "index" | "uniform";
export interface BufferDescriptor {
    id: BufferId;
    usage: BufferUsage;
    byteStride?: number;
}
export type TextureFormat = "rgba8unorm" | "bgra8unorm";
export interface Texture1DDescriptor {
    id: TextureId;
    format: TextureFormat;
    width: number;
}
export interface Dispose {
    destroy(): void;
}
export interface GpuBackend extends Dispose {
    readonly info: GpuBackendInfo;
    init(): Promise<void>;
    setViewport(viewport: GpuViewport): void;
    createOrUpdateBuffer(id: BufferId, data: ArrayBufferView, desc?: Partial<BufferDescriptor>): void;
    deleteBuffer(id: BufferId): void;
    createOrUpdateTexture1D(id: TextureId, data: Uint8Array, desc?: Partial<Texture1DDescriptor>): void;
    deleteTexture(id: TextureId): void;
    render(drawList: DrawList, frame: FrameUniforms): void;
}