Since you have a 780, see if there's any performance issues at all in OpenGL. We didn't have a GTX 780 on hand to test; so all we could do is go by what we've read from NVIDIA.
Pixel Processing Problems: On the Road to Pixel Perfection
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03-21-2014, 12:51 PM
I'm always happy to read another article when they come out. Congratulations and thanks, developers! Nice to see a major improvement like this made and good to know another one is in the works. Would fixing the similar issues with the vertex processing pipeline cause a similar performance hit?
03-21-2014, 12:55 PM
(03-21-2014, 11:50 AM)JMC47 Wrote: Since you have a 780, see if there's any performance issues at all in OpenGL. We didn't have a GTX 780 on hand to test; so all we could do is go by what we've read from NVIDIA. OpenGL mode is definitely affected enough on my 780 Ti with the newer builds to notice. :/
My System: Windows 7 x64, Intel i7 5820k 4.5Ghz, nVidia 980 GTX, 16GB DDR4 2400mhz 13-13-13-35
How so? Even on my GTX 760, most some games remain full speed even at 4x IR. At 1x and 2x IR; I don't have many issues at all outside of a few games (Spyro games, for some reason are very slow.)
(03-21-2014, 11:50 AM)JMC47 Wrote: Since you have a 780, see if there's any performance issues at all in OpenGL. We didn't have a GTX 780 on hand to test; so all we could do is go by what we've read from NVIDIA. There was definitely a performance hit for me even with all that power behind the card. Interestingly enough, Direct3D is still a lot slower for me. I also remember when OpenGL used to struggle more in much older versions of Dolphin. Anyway, using OpenGL, I found I had to reduce the internal resolution from 4x to 2.5x in order to achieve the same speeds I had before the integer change. Not the end of the world of course as the graphics still look way better than the original hardware but not as smoothed out naturally. I conducted this test in "Faron Woods" from "Twilight Princess" with EFB->RAM and DSP LLE. For obvious reasons, that's always pushed my system to the limit making it a good test. To be more specific: Internal Res 4x: 21-23FPS Internal Res 2.5x: 29-30 FPS Like many others, I am not the least bit upset about this because I know that it's way more accurate and that optimizations will eventually be made in both Dolphin and (eventually) the nVidia drivers (provided someone can report the issue with integer usage in the GPU; I am not really familiar with their bug reporting system).
Yeah, D3D mode is also slow for me on my 780 Ti in many games.
And for one thing, Metroid Other M is totally broke in newer builds, btw in OpenGL. As are some other games, Donkey Kong Returns, Cursed Mountain, Conduit 1/2. They all fail to load. Some or all also fail with D3D. I can get Metroid Other M working in earlier builds and with the last stable 4.0.2.
My System: Windows 7 x64, Intel i7 5820k 4.5Ghz, nVidia 980 GTX, 16GB DDR4 2400mhz 13-13-13-35
03-22-2014, 12:35 AM
Find the build that started it and make an issue report so it can be addressed.
03-23-2014, 04:40 AM
All the top GPU makers seem to think OpenGL has a lot of untapped performance already in it:
http://blogs.nvidia.com/blog/2014/03/20/opengl-gdc2014/
My System: Windows 7 x64, Intel i7 5820k 4.5Ghz, nVidia 980 GTX, 16GB DDR4 2400mhz 13-13-13-35
03-23-2014, 05:13 AM
(03-23-2014, 04:40 AM)BatJoe Wrote: All the top GPU makers seem to think OpenGL has a lot of untapped performance already in it:This has nothing to do with the scope of the article, though. Really. 03-26-2014, 04:51 AM
(03-23-2014, 05:13 AM)neobrain Wrote: This has nothing to do with the scope of the article, though. Really. In a sense it does. Since there was a significant performance hit to OpenGL due to this change, a more optimized API could compensate for it. It would also be OpenGL's answer to performance enhancements DirectX 12 will offer. |
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