https://www.techpowerup.com/2569 ... -on-post-navi-plans

"The hybrid approach (doing fixed function acceleration for a single node of the bounded volume hierarchy (BVH) tree and using a shader unit to schedule the processing) addresses the issues with solely hardware based and/or solely software based solutions. Flexibility is preserved since the shader unit can still control the overall calculation and can bypass the fixed function hardware where needed and still get the performance advantage of the fixed function hardware. In addition, by utilizing the texture processor infrastructure, large buffers for ray storage and BVH caching are eliminated that are typically required in a hardware raytracing solution as the existing vector general purpose register (VGPRs) and texture cache can be used in its place, which substantially saves area and complexity of the hardware solution."

依然是基于BVH树算法混合加速，硬件单元方面相较于RTX阉割了动态分支部分只有计算交点功能，农企说法是SIMD和RT单元混合计算相比RTX部分节省了晶体管数量

所以现在可以确定，只要是跑DXR硬件基础算法都完全一样，不要再意淫什么农黄两家不同光追算法，只要在DXR下就没有区别，对于游戏机来说应该也一样起码XBOX2难道会不用DXR？

posted by wap, platform: Meizu M9
硬件部分更少毫无疑问能效会更差，amd能效本来已经够差了。

浪费晶体管啊，APU面积已经够紧张了