Mesa RADV哪都好，但新硬件上有两个问题：1. 光追性能较差，看代码发现只用了image_bvh_intersect_ray没有ds_bvh_stack_rtn，也就是RDNA3/4都是RDNA2级别的纯软件traversal。2. 没有支持RDNA4的cooperative matrix。所以现在RDNA4在Linux下玩游戏或者跑LLM还是得用amdvlk……嗯现在ROCm也是废的。

David's random thoughts

Mesa RADV哪都好，但新硬件上有两个问题：

1. 光追性能较差，看代码发现只用了image_bvh_intersect_ray没有ds_bvh_stack_rtn，也就是RDNA3/4都是RDNA2级别的纯软件traversal。
2. 没有支持RDNA4的cooperative matrix。

所以现在RDNA4在Linux下玩游戏或者跑LLM还是得用amdvlk……嗯现在ROCm也是废的。

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