first commit

public/sdk/three/jsm/postprocessing/MaskPass.js

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+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 and make them writable for subsequent rendering/clearing
+
+		state.buffers.color.setLocked( false );
+		state.buffers.depth.setLocked( false );
+
+		state.buffers.color.setMask( true );
+		state.buffers.depth.setMask( true );
+
+		// 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 };