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Add xBR shaders #2

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
I've ported some of the xBR GLSL shaders to OpenGL ES and added them to the 
shader pack.

Unfortunately performance on my Nexus 7 is too low currently.

Original issue reported on code.google.com by Jules.B...@gmail.com on 23 May 2014 at 1:22

Attachments:

GoogleCodeExporter commented 9 years ago 
[deleted comment]
GoogleCodeExporter commented 9 years ago 
I've ported 4xBR which is very similar to the algorithm VisualBoyAdvance-M uses 
as HQx4.

Original comment by Jules.B...@gmail.com on 23 May 2014 at 2:48

Attachments:

GoogleCodeExporter commented 9 years ago 
Also, that filter is fast enough on my Nexus 7.

Original comment by Jules.B...@gmail.com on 23 May 2014 at 2:48

GoogleCodeExporter commented 9 years ago 
Tried the 4xBR.shader. But surprisingly I think it is not even better than HQ2x.
Attached are the comparisons.

Original comment by fastemul...@gmail.com on 23 May 2014 at 6:09

Attachments:

GoogleCodeExporter commented 9 years ago 
It is highly dependent on the type of game you're playing, these is no single 
filter that is best for all games.

Original comment by Jules.B...@gmail.com on 23 May 2014 at 9:05

GoogleCodeExporter commented 9 years ago 
[deleted comment]
GoogleCodeExporter commented 9 years ago 
OK. So what shader files do you recommend adding to the pack?

Original comment by fastemul...@gmail.com on 23 May 2014 at 11:11

GoogleCodeExporter commented 9 years ago 
xbr looks better with text, HQ shaders overly round the edges.
xbr looks worse on some diagonals though, it's filtering black on the blocks 
into a line ok, but it's missing the bluegrayish line on the right, the spikes 
also look no better than nearest neighbour.

Original comment by m.bloom...@gmail.com on 24 May 2014 at 6:12

GoogleCodeExporter commented 9 years ago 
Also neither xbr or hq seems to filtering that X sign into a total white X with 
a black border, hq looks better on it but it's producing a chain like effect, 
noticable on the trianle blue border too and black on the cubes.

Original comment by m.bloom...@gmail.com on 24 May 2014 at 6:32

GoogleCodeExporter commented 9 years ago 
xBR looks best with games that contain a lot of text and straight lines, such 
as the overworld in pokemon.

I'm not sure yet about which filters to include. I can't really see a 
difference between 5xBR and 4xBR on my Nexus 7 tablet (you can compare them 
below) and we need a version for smartphone screens. So I suggest to use 4xBR 
and 2xBR, I've included both in the attachments.

Original comment by Jules.B...@gmail.com on 24 May 2014 at 3:10

Attachments:

GoogleCodeExporter commented 9 years ago 
I'd argue that xbr4 looks better at a distance than xbr5, the blending of the 
edges on the W of swim. xbr probably scales better in even steps, can you make 
a xbr6 & xbr8 comparisons?

Original comment by m.bloom...@gmail.com on 24 May 2014 at 8:22

GoogleCodeExporter commented 9 years ago 
Those haven't been developed yet, currently 5xBR is the maximum.

Original comment by Jules.B...@gmail.com on 24 May 2014 at 8:24

GoogleCodeExporter commented 9 years ago 
hmm how about running it through 2xBR first then HQ2x afterwards.

Original comment by m.bloom...@gmail.com on 24 May 2014 at 10:24

GoogleCodeExporter commented 9 years ago 
Added 2xBR and 4xBR (based on Jules.Blok's port). I don't think 5xBR is 
necessary at this moment.

Original comment by fastemul...@gmail.com on 24 May 2014 at 11:15

GoogleCodeExporter commented 9 years ago 
Actually you can get much better results through the original HQ4x filter. 
Unfortunately no one has ported the original to a shader yet, so all we have is 
an approximation that MyOldBoy currently uses.

In the attached screenshot you can see what the original HQ4x filter is 
supposed to look like.

You can find the source code for HQ4x here: https://code.google.com/p/hqx/

Original comment by Jules.B...@gmail.com on 24 May 2014 at 11:16

Attachments:

GoogleCodeExporter commented 9 years ago 
[deleted comment]
GoogleCodeExporter commented 9 years ago 
That last comment was a reply to comment #13.

Original comment by Jules.B...@gmail.com on 24 May 2014 at 11:17

GoogleCodeExporter commented 9 years ago 
Have you seen jinc3+anti-ringing?

Comparison of madVR upscalers

http://www.avsforum.com/t/1477339/so-youve-built-your-htpc-now-what-is-next-how-
to-get-the-ultimate-picture-and-sound-quality-from-your-htpc-madvr-svp-xbmc-medi
abrowser-jriver#post_23430408

Original comment by m.bloom...@gmail.com on 24 May 2014 at 11:43

GoogleCodeExporter commented 9 years ago 
No one ported the original hq4x filter to a shader probably because it is 
impossible or very slow running on a shader on GPU. Just a guess because I am 
not a shader programmer :-)

Original comment by fastemul...@gmail.com on 25 May 2014 at 12:04