Subject: General Tech | November 15, 2016 - 11:04 PM | Scott Michaud
Tagged: vulkan, ue4, pc gaming, epic games
Every couple of months, Epic Games drops a new version of Unreal Engine 4 with improvements all over. As such, you should check the full release notes to see all of the changes, including the fifty-one that Epic thinks are worth highlighting. Here are some that I think our readers would enjoy, though.
First, Vulkan support for mobile devices has apparently moved out of experimental. While this will not be enabled for desktop applications, it's interesting to note that DirectX 12 is still in experimental. Basically, if you squint and put blinders on, you could sort-of see some element of Vulkan beating DirectX 12 to market.
Second, Unreal Engine 4 has significantly upgraded their forward renderer. In a lot of cases, a deferred renderer is preferable because it's fast and consistent; the post-process shader only run once per output pixel, ignoring lighting triangles that are covered by other triangles. The way this is structured, though, makes multisample anti-aliasing impossible, which is slightly annoying on desktop but brutal in VR. As an added benefit, they're also using forward shading to help the deferred renderer with translucent materials.
Unreal Engine typically uses a lot of NVIDIA SDKs. This version updates PhysX up to 3.4, which allows “continuous collision detection” on rigid bodies. This means that fast moving object shouldn't pass through objects without colliding, because the collision occurred between two checks and was missed, if this feature is enabled. They are also adding the Ansel SDK, which allows players to take high-detail screenshots, as a plug-in.
Skipping down the release notes a bunch, Unreal Engine 4.14 also adds support for Visual Studio 15, which is the version after Visual Studio 2015 (Visual Studio 14.0). Both IDEs are, in fact, supported. It's up to the developer to choose which one to use, although Visual Studio 15 makes a lot of improvements regarding install and uninstall.
Finally, at least for my brief overview, Unreal Engine 4.14 begun to refactor their networking system. It sounds like the current optimizations are CPU-focused, but allowing more network-capable objects is always a plus. Epic Games claims they are benchmarking about 40% higher performance in this area.
Subject: General Tech | November 4, 2016 - 09:33 PM | Scott Michaud
Tagged: epic games, valve, htc, vr funhouse, nvidia
In early September, we posted about a VR game jam that was coming to Hamburg, Germany by Epic Games, NVIDIA, HTC, and Valve. The companies wanted to increase the amount of content available so, with the release of the VR Funhouse mod kit, they rented a boat, docked it really well, and let indie developers do their thing around the clock. Seven teams of three-to-five participated, and the public were invited to play around with the results.
Most of the entries deviated from the literal fun-house theme to some extent. Probably the most original game is one where users play a kid in a candy store, trying to evade detection while gorging on sweet, sweet candy. Go figure, it's called Kid in a Candy Store. The closest to the literal interpretation of the theme is Beer Beer Beer and Sausages, where you serve carnival food, with real beer and mustard fluid simulations.
Two of the games, Beer Beer Beer and Sausages and Waiter Wars, are available for free on the VR Funhouse Steam Workshop page. I'm not sure what happened to the rest. The Unreal Engine post seems to suggest that they are supposed to be here, but maybe some of the teams are looking to polish it up a little first.
Subject: General Tech | September 6, 2016 - 09:58 PM | Scott Michaud
Tagged: nvidia, epic games, valve, htc, vr funhouse, vive
So Epic Games, NVIDIA, and HTC (with Valve) are hosting a game jam aboard the MS Bleichen ship in Hamburg, Germany. The purpose is to develop mods for VR Funhouse. Nothing says a fun VR experience like room-scale experiences on a boat. Hopefully it will be firmly docked to prevent judges from getting sea-sick... or not. Maybe that will make the carnival games even better?
The jam takes place between September 24th and September 26th. Epic, NVIDIA, and Valve will be donating prizes to the event. Tickets cost 16.67 Euros, although I'm guessing that doesn't include food or a place to sleep -- they don't say one way or the other. The general public can also buy tickets for the last day, to experience the creations.
Subject: General Tech | July 28, 2016 - 12:47 AM | Scott Michaud
Tagged: microsoft, epic games, unreal engine, unreal engine 4, ue4, uwp
The head of Epic Games, Tim Sweeney, doesn't like UWP too much, at least as it exists today (and for noble reasons). He will not support the new software (app) platform unless Microsoft makes some clear changes that guarantee perpetual openness. There really isn't anything, technically or legally, to prevent Microsoft (or an entity with authority over Microsoft, like governments, activists groups who petition government, and so forth) from undoing their changes going forward. If Microsoft drops support for Win32, apart from applications that are converted using Project Centennial or something, their catalog would be tiny.
SteamOS would kick its butt levels of tiny, let alone OSX, Android, and countless others.
As a result, Microsoft keeps it around, despite its unruliness. Functionality that is required by legitimate software make it difficult to prevent malware, and, even without an infection, it can make the system just get junked up over time.
UWP, on the other hand, is slimmer, contained, and authenticated with keys. This is theoretically easier to maintain, but at the expense of user control and freedom; freedom to develop and install software anonymously and without oversight. The first iteration was with Windows RT, which was basically iOS, right down to the “you cannot ship a web browser unless it is a reskin of Internet Explorer ((replace that for Safari in iOS' case))” and “content above ESRB M and PEGI 16 are banned from the OS” levels of control.
Since then, content guidelines have increased, sideloading has been added, and so forth. That said, unlike the technical hurdles of Win32, there's nothing to prevent Microsoft from, in the future, saying “Okay, we have enough software for lock in. Sideloading is being removed in Windows 10 version 2810” or something. I doubt that the current administration wants to do this, especially executives like Phil Spencer, but their unwillingness to make it impossible to be done in the future is frustrating. This could be a few clauses in the EULA that make it easy for users to sue Microsoft if a feature is changed, and/or some chunks of code that breaks compatibility if certain openness features are removed.
Some people complain that he wasn't this concerned about iOS, but he already said that it was a bad decision in hindsight. Apple waved a shiny device around, and it took a few years for developers to think “Wait a minute, what did I just sign away?” iOS is, indeed, just as bad as UWP could turn into, if not worse.
Remember folks, once you build a tool for censorship, they will come. They may also have very different beliefs about what should be allowed or disallowed than you do. This is scary stuff, albeit based on good intentions.
That rant aside, Microsoft's Advanced Technology Group (ATG) has produced a fork of Unreal Engine 4, which builds UWP content. It is based upon Unreal Engine 4.12, and they have apparently merged changes up to version 4.12.5. This makes sense, of course, because that version is required to use Visual Studio 2015 Update 3.
If you want to make a game in Unreal Engine 4 for the UWP platform, then you might be able to use Microsoft's version. That said, it is provided without warranty, and there might be some bugs that cropped up, which Epic Games will probably not help with. I somehow doubt that Microsoft will have a dedicated team that merges all fixes going forward, and I don't think this will change Tim's mind (although concrete limitations that guarantee openness might...). Use at your own risk, I guess, especially if you don't care about potentially missing out on whatever is added for 4.13 and on (unless you add it yourself).
The fork is available on Microsoft's ATG GitHub, with lots of uppercase typing.
Subject: General Tech | June 1, 2016 - 10:26 PM | Scott Michaud
Tagged: unreal engine, ue4, unreal engine 4, epic, epic games
Epic Games has released Unreal Engine 4.12, which adds quite a bit, especially cinematic tools. Those who created games or mods in Unreal Engine 3 or 4 will know about Matinee, the interface to animate objects in a scene. It has finally been replaced with Sequencer, which is designed to feel more like Adobe After Effects or Adobe Premiere. They also add a bunch of features to DirectX 12 and Vulkan, but both are still in experimental preview. Vulkan, for instance, only implements rendering features for mobile, not desktop.
Beyond Sequencer, mentioned above, Epic has also added a bunch of new rendering technologies for high-end graphics. This includes High Quality Reflections, Planar Reflections, Grass and Foliage Scalability, and Twist Corrective Animation Node. These are quite interesting for someone like me, who has been getting back into pre-rendered animation recently, but finds that typical, production renderers (such as Cycles) are quite heavy, slowing me down. Epic was interested in bringing Unreal Engine into a video production workflow, even back in Unreal Engine 3, and it's good to see a lot of attention in this area. It might be enough to move me over at some point, especially for animations that don't have a hyper-realistic style. Even better -- this level of visual quality should land in some games, too.
Unreal Engine 4.12 is now available on Epic's Launcher.
Subject: General Tech | March 31, 2016 - 06:52 PM | Scott Michaud
Tagged: epic games, unreal engine, unreal engine 4
It has been in preview since December, but Epic Games has finally released Unreal Engine 4.11 for developers to create awesome things with. This version focused on performance and the features that were added for Paragon, which entered early access two weeks ago. DirectX 12 is still considered experimental, and Vulkan is missing officially (although John Alcatraz has a tutorial to add it to Unreal Engine built from source), but the rendering back-end has received significant changes to accommodate the new graphics APIs in the future.
The three features that I'm most interested in, apart from free performance, are lighting channels, capsule shadows, and improved building of static light. Light channels are very difficult to implement in a deferred renderer, but Epic managed. This means that you can have dynamic lights only affect certain objects in the scene, either for performance, if enough lights are ignored to justify the cost of the channels themselves, or for special effects, like making a specific object stand out in a scene. They also added new shading models for eyes, hair, skin, and cloth, and added a bunch of interesting audio features.
Unreal Engine 4.11 is available now from Epic's Launcher. It's free to use, but Epic takes a royalty on certain revenues.
Subject: General Tech | March 29, 2016 - 05:55 PM | Scott Michaud
Tagged: unreal engine, epic games, art by rens
This work was featured on Unreal Engine's GDC sizzle video as "Photogrammetry", but I've only just now found out where it came from. The creator, Rense de Boer, goes by the consistent online branding of Art by Rens. He worked at DICE from 2011 through 2014, working on the Battlefield franchise, and now he seems to be doing his own thing.
The environment work is stunning. The snow, slightly thawed and refrozen, covers the rocks and leaves in a way that looks absolutely real. Some of the rocks look partially moss-covered, with the plant seemingly breaking it down, and coming up through the cracks. There's only so many ways that I can describe it, but it's definitely worth a look. He targets four Titan-class video cards, but he's aiming for 4K.
He hasn't announced any product yet, so we're not really sure why he's doing it. He did receive a grant from Epic Games, though. I'm not sure exactly how much, just that $500,000 USD was split 30 ways, but not uniformly (some received more than others).
Subject: Mobile, Shows and Expos | February 21, 2016 - 10:14 PM | Scott Michaud
Tagged: Samsung, epic games, unreal engine 4, vulkan, galaxy s7, MWC, mwc 16
Mobile World Congress starts with a big bang... ... ... :3
Okay, not really; it starts with the formation of a star, which happens on a continual basis across the universe. I won't let facts get in the way of a pun, though.
As for the demo, it is powered by Unreal Engine 4 and runs on a Samsung Galaxy S7 with the Vulkan API. The setting seems to be some sort of futuristic laboratory that combines objects until it builds up into a star. It is bright and vibrant, with many particles, full-scene anti-aliasing, reflections, and other visual effects. The exact resolution when running on the phone was never stated, but the YouTube video was running at 1080p30, and the on-stage demo looked fairly high resolution, too.
Epic Games lists the features they added to mobile builds of Unreal Engine 4 for this demo:
- Dynamic planar reflections
- “Full” GPU particle support, which includes vector fields.
- Temporal Anti-Alising, which blends neighboring frames to smooth jaggies in motion.
- ASTC texture compression (created by ARM and AMD for OpenGL and OpenGL ES)
- Full scene dynamic cascaded shadows
- Chromatic aberration
- Dynamic light refraction
- Filmic tonemapping curve, which scales frames rendered in HDR to a presentable light range
- Improved static reflections
- High-quality depth of field
- Vulkan API for thousands of onscreen, independent objects.
The company has not stated which version of Unreal Engine 4 will receive these updates. I doubt that it will land in 4.11, which is planned for March, but they tend to release a full dot-version every one to three months. They also have early previews for those who wish to try it early, some compiled leading up to launch, and others that need to be built from GitHub.
Subject: General Tech, Shows and Expos | February 5, 2016 - 12:47 AM | Scott Michaud
Tagged: GDC, gdc 2016, epic games, ue4, VR, vive vr
Epic Games released Unreal Engine 4 at GDC two years ago, and removed its subscription fee at the next year's show. This year, one of the things that they will show is Unreal Editor in VR with the HTC Vive. Using the system's motion controllers, you will be able to move objects and access UI panels in the virtual environment. They open the video declaring that this is not an experimental project.
Without using this technology, it's hard to comment on its usability. It definitely looks interesting, and might be useful for VR experiences. You can see what your experience will look like as you create it, and you probably even save a bit of time in rapid iteration by not continuously wearing and removing the equipment. I wonder how precise it will be though, since the laser pointers and objects seemed to snap and jitter a bit. That said, it might be just as precise and, even still, it only really matters how it looks and behaves, and it shouldn't even prevent minor tweaks after the fact anyway.
Epic Games expects to discuss the release plans at the show.
Subject: General Tech | January 21, 2016 - 12:06 AM | Scott Michaud
Tagged: vulkan, ue4, nvidia, Intel, gdc 2016, GDC, epic games, DirectX 12, Codemasters, arm, amd
The 30th Game Developers Conference (GDC) will take place on March 14th through March 18th, with the expo itself starting on March 16th. The sessions have been published at some point, with DX12 and Vulkan prominently featured. While the technologies have not been adopted as quickly as advertised, the direction is definitely forward. In fact, NVIDIA, Khronos Group, and Valve have just finished hosting a developer day for Vulkan. It is coming.
One interesting session will be hosted by Codemasters and Intel, which discusses bringing the F1 2015 engine to DirectX 12. It will highlight a few features they implemented, such as voxel based raytracing using conservative rasterization, which overestimates the size of individual triangles so you don't get edge effects on pixels that are partially influenced by an edge that cuts through a tiny, but not negligible, portion of them. Sites like Game Debate (Update: Whoops, forgot the link) wonder if these features will be patched in to older titles, like F1 2015, or if they're just R&D for future games.
Another keynote will discuss bringing Vulkan to mobile through Unreal Engine 4. This one will be hosted by ARM and Epic Games. Mobile processors have quite a few cores, albeit ones that are slower at single-threaded tasks, and decent GPUs. Being able to keep them loaded will bring their gaming potential up closer to the GPU's theoretical performance, which has surpassed both the Xbox 360 and PlayStation 3, sometimes by a factor of 2 or more.
Many (most?) slide decks and video recordings are available for free after the fact, but we can't really know which ones ahead of time. It should be an interesting year, though.