Open CL texture decoder not working anymore

TSM · (This post was last modified: 11-22-2013, 07:26 PM by TSM.)

Here you go:

I'm using The Legend of Zelda Twilight Princess GZ2E01 USA. The only difference in settings between the screenshots is opencl turned off or on.

I did some more testing. If I change the setting to 1x IR and no AA, I get the same exact performance with Open CL on or off. But when I push up to 3x IR and 4xSSAA I take a huge performance hit with OpenCL turned off. With Open CL on at 3x IR and 4xSSAA the performance is exactly the same as 1x IR, no AA and Open CL off.

I just tested the same thing with the D3D back end and it's the same exact thing. High IR and AA settings with Open CL off causes large performance issues which are corrected by the same exact settings with Open CL on.

Open GL Testing:
1xIR + No AA + = Fine
1xIR + No AA + Open CL = Fine
1xIR + 4xSSAA = Slow Down
1xIR + 4xSSAA + Open CL = Fine
2xIR + No AA = Slow Down
2xIR + No AA + Open CL = Fine
3xIR + No AA = Slow Down
3xIR + No AA + Open CL = Fine
3xIR + 4xSSAA = Slow Down
3xIR + 4xSSAA + Open CL = Fine

I'm running the latest Nvidia driver 331.82. It could be something odd with my set up, but there are several other users reporting the same thing. For whatever reason Open CL is providing a performance boost when running above 1xIR (or far more likely negating some bug in either Dolphin or Nvidia's drivers). These frame rate problems may be alleviated by having a much better CPU which could explain why most users wouldn't notice. I'm only using a 3 ghz i5 3330.