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src/2d/graphics/Graphics.ts

@@ -1112,6 +1112,8 @@ export default class Graphics extends Container {
      * @param {CanvasRenderer} renderer - The renderer
      */
     _renderCanvas(renderer/*: CanvasRenderer*/) {
+        //以防没有end，
+        this.finishPoly();
         if (this.cacheAsBitmap) {
             if (this.cacheDirty != this.dirty) {
                 this.cacheDirty = this.dirty;
@@ -1121,11 +1123,14 @@ export default class Graphics extends Container {
                 this.cacheAsBitmap = false;
                 var tempAlpha = this.alpha;
                 this.alpha = 1;
+                var tempChildren = this.children //待测试，预存子级
+                this.children = [];//置空子级，防止离屏canvas绘制
                 this.generateCanvasTexture();
                 //恢复
                 this.mask = tempMask;
                 this.alpha = tempAlpha;
                 this.cacheAsBitmap = true;
+                this.children = tempChildren;//待测试，还原原先子级
                 this.updateTransform()
             }
             //普通画图的渲染，提供图片和图形的插件，先判断_anchorTexture，offsetX,0

src/2d/renderers/managers/CanvasMaskManager.ts

@@ -41,6 +41,8 @@ export default class CanvasMaskManager extends HashObject {
         if (maskData.instanceType == "Shape") {
             maskData["_drawShape"](renderer.context)
         } else {
+            //以防万一，没有end，加一段，不考虑闭合情况
+            maskData["finishPoly"]()
             this.renderGraphicsShape(maskData);
         }
         renderer.context.clip();

src/2d/renderers/managers/MaskManager.ts

@@ -109,6 +109,10 @@ export default class MaskManager {
 
         //存下之前的滤镜区域
         const cacheFilterArea = target.filterArea;
+
+        //待测试 先计算如果maskData是shape要先执行updateShape
+        if (maskData.instanceType == "Shape") maskData.updateShape();
+
         //取遮罩的范围
         target.filterArea = maskData.getBounds(true);