;(function () {
    class ShaderPass extends THREE.Pass {
        constructor(shader, textureID) {
            super()
            this.textureID = textureID !== undefined ? textureID : 'tDiffuse'

            if (shader instanceof THREE.ShaderMaterial) {
                this.uniforms = shader.uniforms
                this.material = shader
            } else if (shader) {
                this.uniforms = THREE.UniformsUtils.clone(shader.uniforms)
                this.material = new THREE.ShaderMaterial({
                    defines: Object.assign({}, shader.defines),
                    uniforms: this.uniforms,
                    vertexShader: shader.vertexShader,
                    fragmentShader: shader.fragmentShader,
                })
            }

            this.fsQuad = new THREE.FullScreenQuad(this.material)
        }

        render(
            renderer,
            writeBuffer,
            readBuffer
            /*, deltaTime, maskActive */
        ) {
            if (this.uniforms[this.textureID]) {
                this.uniforms[this.textureID].value = readBuffer.texture
            }

            this.fsQuad.material = this.material

            if (this.renderToScreen) {
                renderer.setRenderTarget(null)
                this.fsQuad.render(renderer)
            } else {
                renderer.setRenderTarget(writeBuffer) // TODO: Avoid using autoClear properties, see https://github.com/mrdoob/three.js/pull/15571#issuecomment-465669600

                if (this.clear) renderer.clear(renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil)
                this.fsQuad.render(renderer)
            }
        }
    }

    THREE.ShaderPass = ShaderPass
})()