( function () {
class MaskPass extends THREE.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 THREE.Pass {
constructor() {
super();
this.needsSwap = false;
}
render( renderer
/*, writeBuffer, readBuffer, deltaTime, maskActive */
) {
renderer.state.buffers.stencil.setLocked( false );
renderer.state.buffers.stencil.setTest( false );
}
}
THREE.ClearMaskPass = ClearMaskPass;
THREE.MaskPass = MaskPass;
} )();
