import { Pass } from './Pass.js'; class MaskPass extends Pass { constructor( scene, camera ) { super(); this.scene = scene; this.camera = camera; this.clear = true; this.needsSwap = false; this.inverse = false; } render( renderer, writeBuffer, readBuffer /*, deltaTime, maskActive */ ) { const context = renderer.getContext(); const state = renderer.state; // don't update color or depth state.buffers.color.setMask( false ); state.buffers.depth.setMask( false ); // lock buffers state.buffers.color.setLocked( true ); state.buffers.depth.setLocked( true ); // set up stencil let writeValue, clearValue; if ( this.inverse ) { writeValue = 0; clearValue = 1; } else { writeValue = 1; clearValue = 0; } state.buffers.stencil.setTest( true ); state.buffers.stencil.setOp( context.REPLACE, context.REPLACE, context.REPLACE ); state.buffers.stencil.setFunc( context.ALWAYS, writeValue, 0xffffffff ); state.buffers.stencil.setClear( clearValue ); state.buffers.stencil.setLocked( true ); // draw into the stencil buffer renderer.setRenderTarget( readBuffer ); if ( this.clear ) renderer.clear(); renderer.render( this.scene, this.camera ); renderer.setRenderTarget( writeBuffer ); if ( this.clear ) renderer.clear(); renderer.render( this.scene, this.camera ); // unlock color and depth buffer for subsequent rendering state.buffers.color.setLocked( false ); state.buffers.depth.setLocked( false ); // only render where stencil is set to 1 state.buffers.stencil.setLocked( false ); state.buffers.stencil.setFunc( context.EQUAL, 1, 0xffffffff ); // draw if == 1 state.buffers.stencil.setOp( context.KEEP, context.KEEP, context.KEEP ); state.buffers.stencil.setLocked( true ); } } class ClearMaskPass extends Pass { constructor() { super(); this.needsSwap = false; } render( renderer /*, writeBuffer, readBuffer, deltaTime, maskActive */ ) { renderer.state.buffers.stencil.setLocked( false ); renderer.state.buffers.stencil.setTest( false ); } } export { MaskPass, ClearMaskPass };