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Creator 版本：2.1.2
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目标平台： web
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详细报错信息，包含调用堆栈：
======>控制台输出如下：
[.WebGL-0000019C44A5ACE0] GL_INVALID_OPERATION: Feedback loop formed between Framebuffer and active Texture. [http://localhost:7456/?accountTest=true]
[.WebGL-0000019C44A5ACE0] GL_INVALID_OPERATION: Feedback loop formed between Framebuffer and active Texture. [http://localhost:7456/?accountTest=true]
[.WebGL-0000019C44A5ACE0] GL_INVALID_OPERATION: Feedback loop formed between Framebuffer and active Texture. [http://localhost:7456/?accountTest=true]
[.WebGL-0000019C44A5ACE0] GL_INVALID_OPERATION: Feedback loop formed between Framebuffer and active Texture. [http://localhost:7456/?accountTest=true]
[.WebGL-0000019C44A5ACE0] GL_INVALID_OPERATION: Feedback loop formed between Framebuffer and active Texture. [http://localhost:7456/?accountTest=true]
[.WebGL-0000019C44A5ACE0] GL_INVALID_OPERATION: Feedback loop formed between Framebuffer and active Texture. [http://localhost:7456/?accountTest=true]
[.WebGL-0000019C44A5ACE0] GL_INVALID_OPERATION: Feedback loop formed between Framebuffer and active Texture. [http://localhost:7456/?accountTest=true]
[.WebGL-0000019C44A5ACE0] GL_INVALID_OPERATION: Feedback loop formed between Framebuffer and active Texture. [http://localhost:7456/?accountTest=true]
[.WebGL-0000019C44A5ACE0] GL_INVALID_OPERATION: Feedback loop formed between Framebuffer and active Texture. [http://localhost:7456/?accountTest=true]
[.WebGL-0000019C44A5ACE0] GL_INVALID_OPERATION: Feedback loop formed between Framebuffer and active Texture. [http://localhost:7456/?accountTest=true]
- 重现方式：
如下函数为实现节点快照：
public static snapshotNode(node: cc.Node, cullingMask?: number): cc.Node {
let snapNode = new cc.Node();
snapNode.parent = cc.director.getScene();
snapNode.position = node.position;
let camera = node.addComponent(cc.Camera);
camera.cullingMask = cullingMask || 0xffffffff;
let texture = new cc.RenderTexture();
let gl = cc.game._renderContext;
texture.initWithSize(node.width, node.height, gl.STENCIL_INDEX8);
camera.targetTexture = texture;
camera.render(node);
let spriteFrame = new cc.SpriteFrame(texture);
let outNode = new cc.Node();
let sprite = outNode.addComponent(cc.Sprite);
sprite.spriteFrame = spriteFrame;
outNode.scaleY = -1;
snapNode.destroy();
snapNode = null;
return outNode;
}
在web平台中可以实现快照，但是GL会报上述错误。
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出现概率：100%
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额外线索：