Details
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Bug
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Resolution: Done
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P1: Critical
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6.2.0, 6.2.1, 6.2.2
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None
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Windows 10
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Windows
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8ef13f73de (qt/qtdeclarative/dev) 7b400b8720 (qt/qtdeclarative/6.3) 93a33519de (qt/qtdeclarative/6.2) 8ef13f73de (qt/qtdeclarative/wip/iosstyle) 93a33519de (qt/tqtc-qtdeclarative/6.2)
Description
*crash堆栈: dx接口调用QRhiD3D11::executeCommandBuffer传递过来的ID3D11Buffer空指针导致crash*
这个crash有点类似另一个crash: https://bugreports.qt.io/browse/QTBUG-98363
但此处crash最终表现在ID3D11Buffer被QRhiD3D11::executeCommandBuffer使用时crash，https://bugreports.qt.io/browse/QTBUG-98363的crash是在QRhiD3D11::enqueueResourceUpdates时就被memcpy使用而crash；
crash原因大概分析:
1. 在dx设备丢失情况下， Renderer::unmap 尝试将Buffer继续使用，调用buffer->buf->create() 而没有做异常处理，导致Buffer在后续使用时没判断里面保存的ID3D11Buffer 对应的指针而触发crash
2. crash时，qt打印的warning日志， 对应着上面两段代码的warning日志， 0x887a0005错误码: GPU 设备实例已经暂停
Attachments
Issue Links
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| For Gerrit Dashboard: QTBUG-99477 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 388228,3 | scenegraph: Make the vertex/index buffer logic more robust | dev | qt/qtdeclarative | Status: MERGED | +2 | 0 |
| 389868,2 | scenegraph: Make the vertex/index buffer logic more robust | 6.3 | qt/qtdeclarative | Status: MERGED | +2 | 0 |
| 389889,2 | scenegraph: Make the vertex/index buffer logic more robust | 6.2 | qt/qtdeclarative | Status: MERGED | +2 | 0 |