I believe what I have read is that mesh shaders were ratified as a standard in 2019, so cards after that support it in hardware (Radeon 6000 onwards, Nvidia 20 Series onward), where has, older cards have to emulate it.
Emulating/software solutions is something that adds extra layers of computation, having to decode a mesh shader function call to existing shader function call/s, do the shader function/s, then combine it back, to adding significantly more overhead.
We can emulate older Game consoles pretty well, because even with all of the extra overhead, the computing power available today is magnitudes more powerful/faster than the original hardware.
I believe what I have read is that mesh shaders were ratified as a standard in 2019, so cards after that support it in hardware (Radeon 6000 onwards, Nvidia 20 Series onward), where has, older cards have to emulate it.
Emulating/software solutions is something that adds extra layers of computation, having to decode a mesh shader function call to existing shader function call/s, do the shader function/s, then combine it back, to adding significantly more overhead.
We can emulate older Game consoles pretty well, because even with all of the extra overhead, the computing power available today is magnitudes more powerful/faster than the original hardware.