fix: the blur screen in other resolution ratio

[add-uos]

fix the blur screen in other resolution ratio

Log: fix the blur screen in other resolution ratio Bug: https://pms.uniontech.com/bug-view-266061.html

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 在getPadStride函数中，当content % pad == 0时返回content可能会导致错误，因为如果pad是4的倍数，而content不是4的倍数，那么content % pad将返回0，但实际上应该返回content + pad - content % pad。
• copyBuffer函数中使用qDebug()进行调试输出可能会导致性能问题，并且在生产环境中应该使用更安全的日志机制。
• getPadStride和copyBuffer函数缺少对输入参数的有效性检查，可能会导致未定义行为。

是否建议立即修改: 是

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: add-uos, lzwind

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[add-uos]

/merge