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Unreal Engine 4 "Elemental" Demo - PC vs PS4 side-by-side comparison

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Published on Mar 30, 2013

This is a side-by-side comparison between the Unreal Engine 4 demo released in June 2012 running on a PC with a GTX 680, and the same demo running on the upcoming PlayStation 4 console, released recently (march 2013). Hope it will be useful!

PLEASE DON'T START A CONSOLE VS PC WAR IN THE COMMENTS

Any offensive comments, personal attacks or insults will be deleted.


Original PC Unreal Engine 4 demo: http://www.youtube.com/watch?v=dD9CPq...
Original PS4 Unreal Engine 4 demo: http://www.youtube.com/watch?v=8lS4mj...


You might need to pause the video at some point to read the notes, as some scenes are quite short. Sorry for the inconvenience. The sound used is from the PS4 version, since this version is longer. The PC version might sound slightly different, but this video is more a graphic comparison.


The main differences between the two rendering are the following:

- Some effects such as dust, fog, depth of field and some particle effects are missing or simplified in the PS4 version
- Some lens flares are rendered differently
- A few effects has actually been added on the PS4 version
- The PS4 version has some framerate issues; This might be the result of the video encoding, though
- Some scenes are lit differently.
- Lighting on the PS4 is generally much brighter and contrasted than the PC version (Can't tell if it was done on purpose or if it's due to the PS4 rending lighting differently)
- The flowing lava actually looks more realistic on the PS4 (IMO), it looks much hotter than the PC version
- The lava is technically more advanced on the PC though, as the tessellation was broken is the build used to render the PS4 demo (confirmed by Epic Games)
- The ending has been changed on the PS4 version, with an exclusive scene featuring an ice monster, which is not seen on the PC version
- PC Demo used Sparse Voxel Octree Global Illumination while the PS4 used a more efficient global illumination solution (confirmed by Epic Games)


My personal opinion:
I think the PS4 actually keeps up quite good with the PC version, considering that it has a technically much less powerful GPU than the GTX 680, and that the PS4 will cost much less than the PC used to render the PC version. There is some "downgrade" on the PS4 version but that's expected due to the lesser GPU. It's not half bad actually.
Note that, as stated at the end of the video, the PC version has been recording months earlier, on a older version of the engine, and the demo might actually beneficed from some tweaks or optimizations since June. If the PC version was recorded again, it might provide different results.



Some interesting info from Brian Karis, senior graphics programmer at Epic Games:

"The biggest changes actually came from the merging of two separate cinematics, the original Elemental and the extended Elemental we showed at PS4's launch event. Each had different sun directions and required some compromises to join them. This resulted in some major lighting differences that aren't platform related but were due to it being a joined cinematic. Another effect, in the original you could see the mountains through the door where in the merged one we made the view through the door white since the mountains outside were no longer the same. Same deal with the mountain fly by. The old mountain range doesn't exist in the new one. These changes from the merge make direct comparisons somewhat inaccurate.
Feature wise most everything is the same, AA resolution, meshes, textures (PS4 has tons of memory), DOF (I assure you both use the same Bokeh DOF, not sure why that one shot has different focal range), motion blur.
Biggest differences are SVOGI has been replaced with a more efficient GI solution, a slight scale down in the number of particles for some FX, and tessellation is broken on ps4 in the current build which the lava used for displacement. We will fix the tessellation in the future."

Source: http://www.eurogamer.net/articles/dig... (Last 4 paragraphs)

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