import { AlphaFormat, DepthFormat, DepthStencilFormat, LuminanceAlphaFormat, LuminanceFormat, RedFormat, RedIntegerFormat, RGBAFormat, RGBAIntegerFormat, RGFormat, RGIntegerFormat } from 'three';

export const pixelFormatValues = {
    AlphaFormat,
    RGBAFormat,
    LuminanceFormat,
    LuminanceAlphaFormat,
    DepthFormat,
    DepthStencilFormat,
    RedFormat,
    RedIntegerFormat,
    RGFormat,
    RGIntegerFormat,
    RGBAIntegerFormat,
    // _SRGBFormat, // fallback for WebGL 1
    // _SRGBAFormat, // fallback for WebGL 1
};

export const pixelFormatNames: { [v: number]: PixelFormat } = {};
Object.keys(pixelFormatValues).forEach((k: PixelFormat) =>
{
    pixelFormatNames[pixelFormatValues[k]] = k;
});

export type PixelFormat = keyof typeof pixelFormatValues;