IR or AA?

[trihy]

Hi. Im using dx11. And LLE audio. 1920x1080. 1-4x IR

Most other settings at default.


Here is a screen cap with AA at "2 samples"


As you can see, gpu usage is on 40-60% while on punch out menu, as the fight begins gpu jumps to 99% and fps fall below 20..


Turning off AA will make this game run at full speed with any level of IR.

[NaturalViolence]

What vps do you get at 1x IR + 4xMSAA and what vps do you get at 4x IR + no AA?

[trihy]

Well, after long testing, I can say that the gpu can handle this game with AA, among others.

With no AA, vps stay at 60 with 1, 2, 3 and 4 IR.

With AA at 4 samples, I get:

-1xIR -> vps 57
-1.5xIR -> vps 54
-2xIR -> vps 35
-3xIR -> vps 26
-4xIR -> vps 23

Maybe some games don´t like IR + AA, or need a better gpu.

[xemnas]

You should try Direct3D9. It's faster than Direct3D11. I recommend 2x IR and 9x SSAA.

[NaturalViolence]

Something is very wrong here. It's literally impossible for 4xMSAA to have a greater performance hit than doubling your IR.

[trihy]

Well.. it only happens on this game and 3 or 4 more. Others are fine and run at 4xIR and 4 samples AA at solid 60fps.

Ill test the same game with dx9 to see what happens...

Looks like problems could be gpu/backend/msaa implementation.

[neobrain]

(08-19-2013, 02:37 AM)NaturalViolence Wrote: Something is very wrong here. It's literally impossible for 4xMSAA to have a greater performance hit than doubling your IR.

Actually, no, since Dolphin needs to make use of MSAA in a fairly inefficient way. I don't know if it can actually be this bad, but I wouldn't rule it out.

[NaturalViolence]

Why is the implementation inefficient? How inefficient could it possibly be where 640 x 528 with 4 samples is slower than 2560 x 2112 (16 times the resolution)? How could 4xMSAA ever be slower than rendering at 4 times the resolution? Why do you never elaborate on anything unless I ask?

[Alo81]

The best option I feel is to set the IR to Window Size and then use AA after that. It's how most PC games render images and the quality ends up great for me.

[NaturalViolence]

Yes that's what I do too. This assumes that you have a fast enough GPU for it though.