Disappointed in Nvidia DSR - introduces blur

[LittleNemoNES]

nvm

 

[tidy]

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[AntonioHG]

I'm a little disappointed to read that you found it underwhelming. I was hoping that when I finally move to the new cards, I could have a better way of downsampling that works with more games instead of hoping GeDoSaTo supports said game.

 

[motsm]

I tried downscaling by the old method when everyone was raving about it, and always thought it looked like crap. Seems as though Nvidia hasn't managed to overcome the issue.

It may very slightly blur 2D elements, but there shouldn't be any other noticeable blur, so why exactly did you think it looked like crap?

As for DSR, I can't comment.

 

[tviceman]

What resolution is you native monitor and what resolution are you trying to downscale from? I made a comment in another thread, wondering if DSR would only work best in situations where the resolutions would scale perfectly, i.e. 4k -> 1080p and 1440p -> 720p.

In other words, if you are on a 1440p monitor and are trying to scale down from 4k, that might introduce a little more blurriness because that isn't exact scaling. I don't know for sure though.

 

[mistersprinkles]

What resolution is you native monitor and what resolution are you trying to downscale from? I made a comment in another thread, wondering if DSR would only work best in situations where the resolutions would scale perfectly, i.e. 4k -> 1080p and 1440p -> 720p.

In other words, if you are on a 1440p monitor and are trying to scale down from 4k, that might introduce a little more blurriness because that isn't exact scaling. I don't know for sure though.

Very well thought out.:thumbsup:

 

[toyota]

I thought it looked fine. I went back and forth between 1080 and 1440 and 2160 in several games and notice no blurring. original Crysis looks TONS better at 2160 as that game was just screaming aliasing.

 

[Ken145]

I always thought that even normal downsampling looks blurry, probably because of cheap driver-level scaling algorithm. On the other hand Lanczos in Gedosato looks really crisp, but also less smooth than bilinear/bicubic. I can't imagine how Nvidia's DSR can be less compromising than any other method of downsamling, especially when they are using gauss blur filter. If you want IQ then just move on and buy high res monitor and disable as much dirty post processing as you can.

 

[janii]

I'm a little disappointed to read that you found it underwhelming. I was hoping that when I finally move to the new cards, I could have a better way of downsampling that works with more games instead of hoping GeDoSaTo supports said game.

I dont know why everyone brings up gedosato.

Downsampling existed way before that. Even easier imho.
Simply go to nvidia control panel, enable GPU scaling, create the new resolution you want to have.

Go to any game, select new resolution, voila. Isnt it basically the same with dsr? Except that its just a shorter way the first time.

Anyway, I never saw anything blurry. In fact, it makes them razor sharp. Thats the reason I want to buy a gtx 970 so I can get more power for the downsampling.
I'd stay with my 580 if I never knew about downsampling. Still does the job

 

[AntonioHG]

I dont know why everyone brings up gedosato.

Downsampling existed way before that. Even easier imho.
Simply go to nvidia control panel, enable GPU scaling, create the new resolution you want to have.

Go to any game, select new resolution, voila. Isnt it basically the same with dsr? Except that its just a shorter way the first time.

Anyway, I never saw anything blurry. In fact, it makes them razor sharp. Thats the reason I want to buy a gtx 970 so I can get more power for the downsampling.
I'd stay with my 580 if I never knew about downsampling. Still does the job

That doesn't always work.

 

[Jumpem]

I don't see the point of DSR. At all. If you are paying the performance penalty for initially rendering at a higher resolution, just get a higher resolution and play at that resolution with out the down scaling.

 

[Keysplayr]

The performance penalty is minimal. At any rate, you have the horsepower in a 970/980 to successfully take a performance hit in order to increase image quality through downsampling.

 

[BD2003]

It works different from the old custom resolution downsampling. That used the hardware scaler that basically had a box filter. It's clean but prone to temporal aliasing and moire.

DSR uses a gaussian filter in software/shaders....at 0% it appears to be almost entirely turned off, so you get a worse image that old style downsampling, it's almost as harsh as point sampling. 25% appears to be the most neutral, and beyond that it gets a little soft.

I think it looks amazing at 25%, although I'm starting to prefer the softness of pushing it up a little higher as well. For what its worth, nvidia has claimed they're just getting started with this, and there's nothing stopping them from implementing a filter that produces sharper results like lanczos. If enough people ask, I'm sure they will. I personally think lanczos or bicubic would look garish and ugly and produce all sorts of ringing and temporal artifacts, so I'm glad they went with a more conservative filter to start with.

 

[Phynaz]

The performance penalty is minimal. At any rate, you have the horsepower in a 970/980 to successfully take a performance hit in order to increase image quality through downsampling.

Got any benches showing this minimal performance impact? This is essentially a tweaked SSAA which requires a ton of bandwidth.

 

[BD2003]

Got any benches showing this minimal performance impact? This is essentially a tweaked SSAA which requires a ton of bandwidth.

Maybe he means it's minimal vs downsampling? Cause you're right, it requires a ton of GPU power.

It's still an awesome feature to have. There's a vast difference in requirements between something like Diablo 3 and battlefield 4. If you have the extra power lying around, why not use it?

That being said, I hate aliasing with a passion, so I picked up two 970s. Last night I was playing bf4 downsampled from 4K to 1080p at 60fps on my 100" screen, and it really is a night and day difference. It removes all that shimmering that reminds you it's a game, and it ends up looking more like a CGI movie than a game.

 

[f1sherman]

Too much confusion here, and I have no strength left in me to think or write in English.

Thanks OP for the thread, and thanks BD2003 for 2 great posts.

 

[Subyman]

Has anyone with a 1440p monitor tried this? It seemed to be advertised mainly at 4k downsampling, but I didn't know if it worked with 1440p and its 4x res of 5120x2880.

 

[BD2003]

Has anyone with a 1440p monitor tried this? It seemed to be advertised mainly at 4k downsampling, but I didn't know if it worked with 1440p and its 4x res of 5120x2880.

Yes, that works.

 

[janii]

Has anyone with a 1440p monitor tried this? It seemed to be advertised mainly at 4k downsampling, but I didn't know if it worked with 1440p and its 4x res of 5120x2880.

yup works with other resolutions too

 

[toyota]

The performance penalty is minimal. At any rate, you have the horsepower in a 970/980 to successfully take a performance hit in order to increase image quality through downsampling.

Minimal? Its the same impact as running that higher resolution.

 

[gen3d]

I think it works pretty nice and gives a visual improvement. I can use it on 95% of the games I own, but games like Rome 2, you get unplayable frame rates. Well at least if you have all the settings maxed like I do. It will hold me over until I buy a 50" 4k tv next year when they come down in price.

 

[Silverforce11]

Minimal? Its the same impact as running that higher resolution.

Compared to SSAA, technically same since both are rendering at higher resolution then downsample. Obviously both will be very performance intensive, thus only used on games that run at very high fps.

NV's DSR uses Gaussian filter which will blur, not sure why they went with that approach.

 

[DarkKnightDude]

Maybe he means it's minimal vs downsampling? Cause you're right, it requires a ton of GPU power.

It's still an awesome feature to have. There's a vast difference in requirements between something like Diablo 3 and battlefield 4. If you have the extra power lying around, why not use it?

That being said, I hate aliasing with a passion, so I picked up two 970s. Last night I was playing bf4 downsampled from 4K to 1080p at 60fps on my 100" screen, and it really is a night and day difference. It removes all that shimmering that reminds you it's a game, and it ends up looking more like a CGI movie than a game.

Doesn't BF4 have a rendering resolution option in the graphics options anyways?

 

[Phynaz]

Minimal? Its the same impact as running that higher resolution.

He doesn't appear to be responding to these inquiries.

 

[bystander36]

Compared to SSAA, technically same since both are rendering at higher resolution then downsample. Obviously both will be very performance intensive, thus only used on games that run at very high fps.

NV's DSR uses Gaussian filter which will blur, not sure why they went with that approach.

To be more accurate, it is the same thing as OGSSAA. Sometimes SSAA is SGSSAA (AMD's driver SSAA is SGSSAA), which is more demanding.