Emulator

Seems to be related to this PR: https://github.com/dolphin-emu/dolphin/pull/462

Are the drivers updated? Could be something explicitly related to Maxwell cards.

Maxwell being the GPU Microarchitecture which the 750 Ti is a part of. This could potentially affect people with 8/9xx series NVIDIA cards as well. I'd like to get confirmation on that though from other people who can test.

Fog wrote:

Maxwell being the GPU Microarchitecture which the 750 Ti is a part of. This could potentially affect people with 8/9xx series NVIDIA cards as well. I'd like to get confirmation on that though from other people who can test.

Can't confirm this with both my GTX 970 and my 970m. Tried compiling a new build with the changes reversed and it didn't do anything. However, OpenGL is slower than D3D, but that doesn't seem to be related to this.

Anti-Ultimate wrote:

Fog wrote:

Maxwell being the GPU Microarchitecture which the 750 Ti is a part of. This could potentially affect people with 8/9xx series NVIDIA cards as well. I'd like to get confirmation on that though from other people who can test.

Can't confirm this with both my GTX 970 and my 970m. Tried compiling a new build with the changes reversed and it didn't do anything. However, OpenGL is slower than D3D, but that doesn't seem to be related to this.

Which OS are you running on?

On IRC, degasus brought up a valid point that the 750 series Maxwells are GM1XX, while the rest are GM2XX.

So this issue would only appear to affect the GTX 745, GTX 750, and GTX 750 Ti graphic cards.

Fog wrote:

Anti-Ultimate wrote:

Fog wrote:

Maxwell being the GPU Microarchitecture which the 750 Ti is a part of. This could potentially affect people with 8/9xx series NVIDIA cards as well. I'd like to get confirmation on that though from other people who can test.

Can't confirm this with both my GTX 970 and my 970m. Tried compiling a new build with the changes reversed and it didn't do anything. However, OpenGL is slower than D3D, but that doesn't seem to be related to this.

Which OS are you running on?

For the 970 that would be Windows, but on my notebook I have an arch install and Windows 10 and it makes no difference whatsoever. But why would this only affect First Gen Maxwell cards? Is there something NVIDIA messed up again similiar to the 970?

Anti-Ultimate wrote:

Fog wrote:

Anti-Ultimate wrote:

Fog wrote:

Maxwell being the GPU Microarchitecture which the 750 Ti is a part of. This could potentially affect people with 8/9xx series NVIDIA cards as well. I'd like to get confirmation on that though from other people who can test.

Can't confirm this with both my GTX 970 and my 970m. Tried compiling a new build with the changes reversed and it didn't do anything. However, OpenGL is slower than D3D, but that doesn't seem to be related to this.

Which OS are you running on?

For the 970 that would be Windows, but on my notebook I have an arch install and Windows 10 and it makes no difference whatsoever. But why would this only affect First Gen Maxwell cards? Is there something NVIDIA messed up again similiar to the 970?

It's possible. Some companies will repurpose chips from other cards to be used on newer models until they get a dedicated chip for that cards. Of course, sometimes it will be that way the entire lifespan of that model. I believe it might also have to do with the company the Mfd. them. Some manufacturers prefer to use what's on hand and modify the chip's firmware before using the new stuff.

Then again, I'm speaking from conjecture and hear-say so I'm probably WAY off base.

I checked on my GTX 960 (Maswell 2) and it's fine.

COHERENT_BIT is set so we don't have to use a MemoryBarrier on write

If the coherent_bit was removed, where is this mysterious MemoryBarrier?