Method setTextureSwizzleRGBA

src/effects/TextureEffect.js:192–206

* Sets the swizzles that will be applied to the components of a texel before it is written to the output color. * * @param {ColorChannel} r - The swizzle for the `r` component. * @param {ColorChannel} [g=r] - The swizzle for the `g` component. * @param {ColorChannel} [b=r] - The swizzle for

(r, g = r, b = r, a = r)

	 */

	setTextureSwizzleRGBA(r, g = r, b = r, a = r) {

		const rgba = "rgba";
		let swizzle = "";

		if(r !== ColorChannel.RED || g !== ColorChannel.GREEN || b !== ColorChannel.BLUE || a !== ColorChannel.ALPHA) {

			swizzle = [".", rgba[r], rgba[g], rgba[b], rgba[a]].join("");

		}

		this.defines.set("TEXEL", "texel" + swizzle);
		this.setChanged();

	}

	/**
	 * Updates this effect.