three
Version:
JavaScript 3D library
105 lines (62 loc) • 2.62 kB
JavaScript
console.warn( "THREE.MaskPass: As part of the transition to ES6 Modules, the files in 'examples/js' were deprecated in May 2020 (r117) and will be deleted in December 2020 (r124). You can find more information about developing using ES6 Modules in https://threejs.org/docs/#manual/en/introduction/Installation." );
THREE.MaskPass = function ( scene, camera ) {
THREE.Pass.call( this );
this.scene = scene;
this.camera = camera;
this.clear = true;
this.needsSwap = false;
this.inverse = false;
};
THREE.MaskPass.prototype = Object.assign( Object.create( THREE.Pass.prototype ), {
constructor: THREE.MaskPass,
render: function ( renderer, writeBuffer, readBuffer /*, deltaTime, maskActive */ ) {
var context = renderer.getContext();
var 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
var 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 );
}
} );
THREE.ClearMaskPass = function () {
THREE.Pass.call( this );
this.needsSwap = false;
};
THREE.ClearMaskPass.prototype = Object.create( THREE.Pass.prototype );
Object.assign( THREE.ClearMaskPass.prototype, {
render: function ( renderer /*, writeBuffer, readBuffer, deltaTime, maskActive */ ) {
renderer.state.buffers.stencil.setLocked( false );
renderer.state.buffers.stencil.setTest( false );
}
} );