mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-07-08 19:50:43 +02:00
87 lines
1.6 KiB
JavaScript
Executable File
87 lines
1.6 KiB
JavaScript
Executable File
/**
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* @author alteredq / http://alteredqualia.com/
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*/
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THREE.MaskPass = function ( scene, camera ) {
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this.scene = scene;
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this.camera = camera;
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this.enabled = true;
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this.clear = true;
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this.needsSwap = false;
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this.inverse = false;
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};
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THREE.MaskPass.prototype = {
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render: function ( renderer, writeBuffer, readBuffer, delta ) {
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var context = renderer.context;
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// don't update color or depth
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context.colorMask( false, false, false, false );
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context.depthMask( false );
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// set up stencil
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var writeValue, clearValue;
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if ( this.inverse ) {
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writeValue = 0;
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clearValue = 1;
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} else {
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writeValue = 1;
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clearValue = 0;
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}
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context.enable( context.STENCIL_TEST );
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context.stencilOp( context.REPLACE, context.REPLACE, context.REPLACE );
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context.stencilFunc( context.ALWAYS, writeValue, 0xffffffff );
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context.clearStencil( clearValue );
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// draw into the stencil buffer
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renderer.render( this.scene, this.camera, readBuffer, this.clear );
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renderer.render( this.scene, this.camera, writeBuffer, this.clear );
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// re-enable update of color and depth
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context.colorMask( true, true, true, true );
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context.depthMask( true );
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// only render where stencil is set to 1
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context.stencilFunc( context.EQUAL, 1, 0xffffffff ); // draw if == 1
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context.stencilOp( context.KEEP, context.KEEP, context.KEEP );
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}
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};
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THREE.ClearMaskPass = function () {
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this.enabled = true;
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};
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THREE.ClearMaskPass.prototype = {
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render: function ( renderer, writeBuffer, readBuffer, delta ) {
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var context = renderer.context;
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context.disable( context.STENCIL_TEST );
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}
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};
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