| 1 | 'use strict';
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| 2 |
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| 3 | Object.defineProperty(exports, '__esModule', { value: true });
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| 4 |
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| 5 | var extensions = require('@pixi/extensions');
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| 6 | var settings = require('@pixi/settings');
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| 7 | var AbstractMaskSystem = require('./AbstractMaskSystem.js');
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| 8 |
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| 9 | class StencilSystem extends AbstractMaskSystem.AbstractMaskSystem {
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| 10 | constructor(renderer) {
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| 11 | super(renderer);
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| 12 | this.glConst = settings.settings.ADAPTER.getWebGLRenderingContext().STENCIL_TEST;
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| 13 | }
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| 14 | getStackLength() {
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| 15 | const maskData = this.maskStack[this.maskStack.length - 1];
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| 16 | if (maskData) {
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| 17 | return maskData._stencilCounter;
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| 18 | }
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| 19 | return 0;
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| 20 | }
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| 21 | push(maskData) {
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| 22 | const maskObject = maskData.maskObject;
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| 23 | const { gl } = this.renderer;
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| 24 | const prevMaskCount = maskData._stencilCounter;
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| 25 | if (prevMaskCount === 0) {
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| 26 | this.renderer.framebuffer.forceStencil();
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| 27 | gl.clearStencil(0);
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| 28 | gl.clear(gl.STENCIL_BUFFER_BIT);
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| 29 | gl.enable(gl.STENCIL_TEST);
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| 30 | }
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| 31 | maskData._stencilCounter++;
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| 32 | const colorMask = maskData._colorMask;
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| 33 | if (colorMask !== 0) {
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| 34 | maskData._colorMask = 0;
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| 35 | gl.colorMask(false, false, false, false);
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| 36 | }
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| 37 | gl.stencilFunc(gl.EQUAL, prevMaskCount, 4294967295);
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| 38 | gl.stencilOp(gl.KEEP, gl.KEEP, gl.INCR);
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| 39 | maskObject.renderable = true;
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| 40 | maskObject.render(this.renderer);
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| 41 | this.renderer.batch.flush();
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| 42 | maskObject.renderable = false;
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| 43 | if (colorMask !== 0) {
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| 44 | maskData._colorMask = colorMask;
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| 45 | gl.colorMask((colorMask & 1) !== 0, (colorMask & 2) !== 0, (colorMask & 4) !== 0, (colorMask & 8) !== 0);
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| 46 | }
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| 47 | this._useCurrent();
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| 48 | }
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| 49 | pop(maskObject) {
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| 50 | const gl = this.renderer.gl;
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| 51 | if (this.getStackLength() === 0) {
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| 52 | gl.disable(gl.STENCIL_TEST);
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| 53 | } else {
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| 54 | const maskData = this.maskStack.length !== 0 ? this.maskStack[this.maskStack.length - 1] : null;
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| 55 | const colorMask = maskData ? maskData._colorMask : 15;
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| 56 | if (colorMask !== 0) {
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| 57 | maskData._colorMask = 0;
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| 58 | gl.colorMask(false, false, false, false);
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| 59 | }
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| 60 | gl.stencilOp(gl.KEEP, gl.KEEP, gl.DECR);
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| 61 | maskObject.renderable = true;
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| 62 | maskObject.render(this.renderer);
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| 63 | this.renderer.batch.flush();
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| 64 | maskObject.renderable = false;
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| 65 | if (colorMask !== 0) {
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| 66 | maskData._colorMask = colorMask;
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| 67 | gl.colorMask((colorMask & 1) !== 0, (colorMask & 2) !== 0, (colorMask & 4) !== 0, (colorMask & 8) !== 0);
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| 68 | }
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| 69 | this._useCurrent();
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| 70 | }
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| 71 | }
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| 72 | _useCurrent() {
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| 73 | const gl = this.renderer.gl;
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| 74 | gl.stencilFunc(gl.EQUAL, this.getStackLength(), 4294967295);
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| 75 | gl.stencilOp(gl.KEEP, gl.KEEP, gl.KEEP);
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| 76 | }
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| 77 | }
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| 78 | StencilSystem.extension = {
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| 79 | type: extensions.ExtensionType.RendererSystem,
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| 80 | name: "stencil"
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| 81 | };
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| 82 | extensions.extensions.add(StencilSystem);
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| 83 |
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| 84 | exports.StencilSystem = StencilSystem;
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| 85 |
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