What is the general state of DX12 in Dolphin?

themanuel · 09-27-2016, 01:06 AM #1

I'm just wondering what works, what doesn't, whether the performance increase at this point (if any) offsets the aggravation of dealing with added bugs, etc.

**Admentus** · (This post was last modified: 09-27-2016, 02:51 AM by Admentus.)

You should try it out. I use D3D12 all the time. There seems to be no downsides for me so far compared to D3D11. In fact Paper Mario: The Thousand-Yoor Door works even faster and better with D3D12 than with D3D11. D3D11 simply does not like bounding boxes, at least... for NVidia users such as me. The label still states that D3D12 is experimental, which is mostly likely because it is still fairly new. I am actually suprised that D3D12 works so smoothly while it is still fairly new.

themanuel · 09-27-2016, 04:05 AM #3

Thanks for your impressions. I ask because the last couple of times I tried it, I tried to launch Super Mario Sunshine and it would crash. Perhaps this is a problem only with that game or engine. This was several months ago and I was using the Ishiiruka build. I will try with both builds tonight and see.

**Admentus** · (This post was last modified: 09-27-2016, 04:47 AM by Admentus.)

Did you use AR or Gecko codes with Super Mario Sunshine by any chance? Using certain codes may cause the game to crash. Personally, Super Mario Sunshine runs flawless with the 16:9 Widescreen and 60 FPS codes, while using D3D12.

themanuel · 09-27-2016, 07:56 AM #5

I just ran the game with each back-end and although there a couple of graphical glitches as the save file loads, D3D12 does not crash. However, it runs the game as slowly as molasses at about 40% of D3D11. With D3D11, the game runs comfortably above 60FPS.

The system specs in my signature are current and my emulation settings are below:
Ishiiruka v780
3x IR
4x MSAA
16x AF
PP Lighting
Full Async Shader Compilation
Custom HD textures in DDS format (prefetched)
Borderless fullscreen with no vync
60FPS Patch
AR Code: widescreen heat wave fix
Widescreen hack
Double Video Rate hack

themanuel · 09-27-2016, 08:04 AM #6

I now just tested DKCR as well and it just plain crashes on the world map with D3D12. I think I'll keep playing the waiting game with D3D12, as things are running pretty well for me with D3D11.

**KHg8m3r** · 09-27-2016, 08:11 AM #7

I think AMD cards have been having issues recently with current drivers, not sure if it was just isolated to the 480 cards or not

themanuel · 09-27-2016, 12:13 PM #8

I figured as much. As I understand it, the OGL backend is also quite slow for AMD cards so for now it looks like D3D11 is the sweet spot for them.

Megapsychotron · 10-04-2016, 05:07 AM #9

Stereo 3D does not seem to work in DX12. Which is why I'm stuck usually using DX11.

Khronikos · 10-10-2016, 08:45 AM **#10**

(09-27-2016, 08:04 AM)themanuel Wrote: I now just tested DKCR as well and it just plain crashes on the world map with D3D12. I think I'll keep playing the waiting game with D3D12, as things are running pretty well for me with D3D11.

I don't have Win10 but my system is doing 4K and extras pretty easily in most games like SMG2 and DKCR. I have really no need to even want DX12 for anything at this point.