Getting Started with ProBuilder – Tools and Tips

A personal wish of mine is to have mesh modification tools in Unity. Seeing ProBuilder become part of the engine is a delight, one that I cannot stop smiling at.

The goal of this blog post is to help you to overcome any barriers and start you on the right path to having fun playing with this toolset, using it efficiently and effectively to mitigate any risk of becoming frustrated. So, I wanted to share some tools and tips around using ProBuilder for the first time because it is an excellent tool! If you are a noobie to 3D or an experienced modeller, this post will provide you with some great insights into getting started with ProBuilder. I should mention this is not a step by step tutorial, but I will be sharing helpful tips to getting started in using the tools available to you.

ProBuilder

ProBuilder:

Here are some great keyboard shortcuts that’ll get you building and modifying meshes in no time:

Ctrl + K – Spawns a Cube.
Ctrl + Shift + K – New Shape Tool.

Hold Shift while moving – Extrusion:

Extrusion.gif

Hold Shift while scaling – Inset:

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Alt + U – Insert Edge Loop:

Inset Edge Loop.gif
Alt + E – connects verts/edges:

Connect edges.gif
Alt + C – collapse verts (this will merge all selected verts into one vertex, centred at the average of all selected points):

Collapse verts.gif

Ctrl + Z – Undo – same as anything in Unity.

Escape key – reverts to object selection mode.

Use H, J, and K keys to chose between Verts, Edges and Faces selection modes.

Multi-select faces/edge/verts – Hold Shift and LMB.

Use backspace to delete verts/faces/edges – Delete will delete the object.

In general, tooltips can take 500ms or so to show, in ProBuilder this can be instant by holding the Shift key when hovering the mouse cursor over the feature buttons in the toolbar.

Now, I’ll share some tips and gotchas which I found are useful things to know, but first, if you are new, remember to start simple, common mistake is to start pushing too much geometry, this can become very complicated fast. Start by boxing out familiar shapes, it’s a lot easier to add geometry than to clean up complex geometry. Here we go:

When collapsing vertices, you might want to collapse them to the first vertex that you selected. To do this you need to click on the + button next to the Collapse Vertices option on the toolbar and select Collapse To First in the Options menu pop-up (be aware that all future Collapse Vertices will now Collapse To First if this checkbox remains enabled):

Collapse to first

To select vertices that are hidden out of view on the opposite side of the geometry, you will need to ensure Select Hidden: On is enabled. By default, this is On so be aware when you go to select multiple vertices to modify them.

There are many circumstances where you will need to flip normals to invert the faces of your geometry, ProBuilder has a feature called Flip Face Normals located in the toolbar (you will need to first select some faces on your mesh):

Flip Faced Normals

Use Detach Faces to detach parts of a mesh to a new game object, useful for cleaning up meshes, especially if you have created some ngons. Things to be aware of when using this feature:

  • The pivot will usually be in an incorrect position
    • Use Centre Pivot selection from the toolbar
    • For custom pivot positioning – select a vert – use Set Pivot

When using the New Shape tool to build Stairs. There is an option to uncheck Build Sides. If you know those sides of the object won’t be visible this is especially useful for:

  • Not having to go back and clean this up manually yourself
  • Optimal for baked lighting to ensure you not wasting texture space
    • Also, helps reduce bake times

Uncheck Build Sides.gif

Preferences for ProBuilder – customise shortcut settings

If like me, you like to see how many faces, triangles and verts a mesh has (especially when building on the fly), you will need to enable this in Edit -> Preferences -> ProBuilder -> Show Scene Info (not a great name).

Show Scene Info

ProGrids:

Used to make snapping easier, and excellent for controlling the unit size of your entire geometry, level design at it’s finest. Here are some quick tips:

  • Use +/- keys to scale the grid size – you can change this on the fly depending on your requirements for mesh modifying
  • Select all the verts – select the push to grid button to align current mesh with new grid size
    Hold V to snap objects around

PolyBrush:

A great addition, and lets you sculpt, smooth, texture blend, paint on textures, scatter objects etc.

To sculpt you may need to add additional geometry to your mesh, you can do this via using the subdivide tool, the way this works is it grabs all edges and connects them to the centre, a straightforward implementation, with nothing extravagant happening here.
To sculpt you will need to select the Push tool, which will push (sculpt) vertices on your mesh depending on brush settings, some tips for quickly editing brush settings for sculpting:

  • Hold ctrl to scroll brush up to a larger size
  • Hold shift to change the interior diameter of the brush
  • Hold shift + ctrl to adjust the strength (how much push will be applied to your mesh)

That’s it, I hope to write more of these posts over the coming weeks/months, please share your ProBuilder creations, I cannot wait to see what you create!

Iceland: SlushPlay, VR, Snow Mobiles and Killer Shark.

iceland

Iceland, what a beautiful piece of rock! The island was one of my dream places to visit since I was a young boy, due to many areas of my personal interests covering: geology, volcanoes, nature, ice, astronomy, a lot of Science and the sense of adventure. Iceland has it all. Although, this trip was my second visit I definitely didn’t have the same experience first time.

Where to begin?!

I’ll start with my actual reason for visiting and this was for an interactive media conference focusing on Virtual Reality called Slush Play.

Representing Unity, my role at the conference was to catch up with the local game development scene (which is on a steady rise), meet new contacts from different industries and companies and continue sharing my knowledge and learning more about Virtual Reality, all achieved I must say.

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The event was one of my favourite experiences at a conference and I have attended many. I only stayed for the one day, missing the second day of the conference but the time I spent there I had many productive and interesting discussions with new and known people, everyone I met we seemed to get on and have a laugh which isn’t always the case at conferences, it felt like everyone was there for the same reason and objective.

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Blue Lagoon:

On arrival, I went straight to the Blue Lagoon, from the airport it is surprisingly close, 15-20 minute drive, the general advice is to go after or before flying due to the proximity.

I find it a little hard to describe my feelings towards the Blue Lagoon, I was excited to be visiting and I actually feel a bit disappointed post visit but I believe this to be because my expectations leading up to the visit were wrong.

My vision for the Blue Lagoon was no way near what it actually is, this might sound a bIt silly as I had read about it online via reviews and other blog posts and the official website of course. I thought, what I would be swimming in was something that hadn’t been so man made and crafted, I thought it would be more natural (I wonder if anyone reading this knows what I mean?), the whole site is heavily crafted for what I imagine is safety reasons, I mean we are technically swimming in a big bath that is being heated by geothermal energy.

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There isn’t much to do when you get there, it is basically you taking a very long bath, in a big bath, outside, with other people in it. Before you reach the bathing areas you would need to navigate through all the naked people (men in my case), it is a requirement that you shower without your swimwear on, this is for hygienic reasons. Luckily there are one or two private showers.

There’s a bar which you can swim up to, expensive drinks obviously, alcohol is on sale. There’s another bar which serves silica mud masks, which you can apply on your face and leave for 10-15 minutes then wash off. After, you can apply an algae mask for moisturising your face.

Once you’ve had fun spreading mud and algae on your face, I just tried to make the most of what was on offer, so I bathed and practiced some meditation techniques I’m learning, actually this was very nice and relaxing, I felt rejuvenated, energised by the natural surroundings and soaking up all the healthy minerals and goodness in the sea water.

I would recommend visiting the Blue Lagoon, please don’t be put off by my comments, I don’t regret going at all, the average time someone spends there is 2-3 hours, this seems about right, I wouldn’t take a day out of my trip to do this again, it definitely makes sense to do it on the same day as flying. I probably wouldn’t go out of my way to go a second time. I actually buy the silica mud mask and other products online.

Excursion day:

The second day in Iceland was the speakers excursion day, I wasn’t a speaker but I got to attend in place of my colleague who was speaking but was arriving on the day of the excursion.

The excursion consisted of a 2-3 hour drive to a Glacier, which we would then drive snow mobiles on, are you fucking serious? Snow mobiles? Me driving? On a Glacier?! Yes they were serious, adrenaline rush coming up.

Before the rush, we stopped for a break, which happened to be the site of one of Iceland’s famous Geysir’s, I had the pleasure to witness the power of a rare hydrogeological condition, which is only possible in a few areas on Earth which are near active volcanic areas, Geysir’s happen because they are near Magma. It is interesting to know you are standing relatively close above Magma..

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What a beautiful site, great to witness the power and energy planet Earth showcases in the form of a Geysir.

Snow Mobiles:

I’ve always wanted to see a Glacier, huge powerful blocks of ice that shape and cut the rock beneath it, this seemed quite a scary thing to do, knowing about how cracks and deep crevices form on Glaciers, what happens if there is a crack opening and I drove into it?! Well, I wouldn’t be coming back that is for sure, that fear of driving on ice that’s slowly moving down a rocky mountain sounds a little crazy, I have experienced other extreme sports before, jumping out of a plane at 15,000ft to name some, but this actually felt like a step up from that believe it or not. All I could do is embrace it, so I did, I’m not one to shy away from doing something new, whether I would do that thing again is another matter.

When we arrived at the Glacier there is a hut where the crew hang out who organise the excursion, we also had a nice warm hotdog to get an energy boost to prepare us for what was about to happen, the hut is very close to the Glacier, it is right there, a huge mountain of ice just sitting looking quite menacing, I was thinking I’ll be driving a snow mobile on that shortly, is this actually happening? Am I dreaming?!

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Soon after, we started suiting up, the only time I would ever wear a onesie is for extreme sports, this onesie was incredibly thick and warm, designed to be placed on top of the already warm clothes I was previously advised to wear. I also wore a helmet that was thicker than any other helmet I’d ever seen, it almost felt like I was gearing up to go to space or something, but what I did know is that I will be going to quite an inhospitable place which is extremely dangerous.

I hopped into the super jeep, this was the first challenge, the drive had to take us over the bed of rocks, it looked like something from Mars, this was off road at it’s finest, driving extremely slowly so we didn’t tip over, we were told to keep our helmets on inside the vehicle and to try to avoid head butting the glass windows. This short drive took 15-20 minutes to reach the base of the Glacier.

We drove up the Glacier to meet the nutters who regularly drive snow mobiles on Glaciers, oh, I mean these totally sane people who would no doubt teach us how to drive one. To my surprise the safety instructions took no more than 60 seconds, keep your feet inside the vehicle, that’s the throttle, that’s the break, don’t break while using the throttle. Okay?! ready?! Uhmmm okay, hey why not, remember let’s embrace it, so I picked my snow mobile, obviously trying to pick the most awesome looking one, there were different colours and design variations, some cleaner than others but all do the same thing..I hope.

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Driving the snow mobile is definitely more challenging then I thought it would be, the throttle was almost like a side angled Xbox controller trigger but in a position for your thumb to use as if you were changing gears on a bicycle. This made it particularly challenging to maintain your speed while turning left or right, you also had to lean into the turnings as weight distribution is super important on that type of terrain. The terrain is very bumpy, uneven, icy and generally treacherous and the trails left from other snow mobiles tend to off balance and redirect you slightly.

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All is going so well, I’ve got the hang of it and I actually got some air time in one instance (not sure how many points I got for that), standing up as well, I was also going quite fast up the slopes.

No, it wasn’t going as well as I thought, maybe I got a little complacent? I crashed!! It wasn’t a crash into something, the snow mobile decided to throw me off to the side and it flipped over, it was actually all my fault, I didn’t lean into the turning properly and the slope on the turning was steeper than I anticipated, weight distribution wasn’t correct and it chucked me off, luckily I knew it was coming, so I partly jumped out of it and landed as comfortably as I could, otherwise that 300kg snow mobile would of landed on my right leg crushing it between the vehicle and hard ice layered on top of hard rock, that would not of been fun I promise. I picked myself up instantly, my heart was racing and adrenaline was rushing around my body, it is actually quite important that I checked myself over properly, adrenaline can mask any pain you might have, I was a little worried that I may have broke my wrist as this was what I primarily used to land on, of course this is never recommended but it’s such a natural thing to do, silly human brain.

Turned out I trashed the cool snow mobile I picked, it’s now out of action, so one of the sane guys picked me up in his snow mobile and we were already heading back down the Glacier as the excursion was coming to an end. Luckily I got to hop off and drive another snow mobile down the Glacier for the final descent, obviously a little nervous to get back on one on my own, but if you fall off you should definitely get back on, best to conquer that fear now then letting it brew until the next time I get to drive a snow mobile.

Snow mobiles over, we were treated to a BBQ back at the hut, the meat was cooked to perfection and the veggies and salads were delicious, food in Iceland is incredible, so fresh and healthy it’s a dream.

On the way back to Reykjavik, the organiser from Slush announced on the super jeep minibus that we are stopping for a waterfall break, naturally I thought that was a metaphor for a toilet break, to my surprise it wasn’t, there’s an actual waterfall, another incredible surprise Iceland has thrown at me, driving up to the sight I had absolutely no idea there was a waterfall in the surrounding area, the flat rocky lava planes go for as far as the eye can see, the waterfall cut down into the terrain, it’s a glorious feature, it was my first time seeing a waterfall of this magnitude, it was magical.

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Killer Shark:

In the evening I went for dinner in the center of Reykjavik, serving traditional Icelandic food…fish. This is where I experienced the delight that is Killer Shark, in Icelandic it is called Kæstur hákarl, pronunciation TBD.

It is fermented Shark, the Shark has been fermented for 5-6 months because the flesh is poisonous. The Shark is called Greenland Shark.

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The Shark was presented in a Jar, two small cubes of flesh were inside, I opened the jar and took a whiff and it stunk of ammonia, whoa that was rather off putting. The topic of the day seemed to be about “experiencing new things”, so I wasn’t not going to try it now, I tasted the one of the two pieces of flesh, very fishy taste at first then this horrific ammonia after taste hits, quite overpowering. This type of food is really not my cup of tea. I did eat the last piece if you wondered…

Aurora Borealis (Northern Lights):

It seemed like Iceland was throwing everything at me in just one day, there was a buzz throughout with the locals as there was a predicted spectacular showing from the Aurora Borealis in the evening. Reykjavik was to turn their city lights out from 10-11pm for Astronomy. This was so awesome and I hope other cities around the world take notice and do the same, light pollution is such as issue especially in the UK and it is a shame we are blinded from this in order to see what would be a beautiful nights sky above us. I took this image with my mobile phone, excuse the quality:

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Before falling asleep I had realised I had seen H2o in all 3 of it’s natural states throughout the day, Steam from the Geysir, Ice from the Glacier and water from the waterfall.

If all this wasn’t enough, for the 3+ days in the back of my mind the monster volcano known as Katla was clearing her throat, with multiple earthquakes detected in the area, I didn’t actually feel any earthquake from within Reykjavik but there was and still is a genuine concern that an eruption is imminent and it is predicted to be 10x more explosive than the famous 2010 eruption from Eyjafjallajökull.

In general what an incredible life experience, which I’m so happy to have survived, hope you have enjoyed this post. Now go visit Iceland.

What I’ve learnt demoing VR to first timers.

Those who have the privilege of owning a Virtual Reality (VR) headset I’m sure has shown VR to someone who hasn’t experienced it before, I like to tag these people as VR first timers (jokes), I don’t actually like labelling things but for the sake of this post I will use it. Anyway back to the subject at hand.

I own a HTC Vive and it’s currently set up in my spare bedroom at home, I feel very privileged to own this hardware and to actually have a PC that runs it. I take advantage of this by allowing anyone to have a go on my VR rig.

HTCVive

Most of my family and friends have never heard of VR, they aren’t exactly geeky tech heads like myself, one of my friends thought it was some weird spy camera rig set up, having described that it’s the next big thing called Virtual Reality, my friend still didn’t get it and just brushed it off, I even had to plea with him just to give it a go, I was begging him to try it to see…I had a similar experience with my girlfriend as well.

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I have demoed VR to a lot of people at various technology conferences, typically at a Unity booth at a conference we would have some form of VR demo set up, whether it’s an Oculus VR, HTC Vive or GearVR. The advantage at a technology conference is I don’t have to beg people to try it.

What’s the different between the three? Quite drastic in my opinion and this question is relevant to the topic of this post because you need to think about what type of VR experience you would like to show to a VR first timer. I don’t want to delve into this question too much though but in simple terms Oculus is a sitting or standing VR experience connected to a PC, GearVR is a mobile experience, a device that has a slot to place your Samsung device into and the HTC Vive (saving the best ’till last) which is a room-scale VR headset connected to a PC (can also be a standing or sitting experience).

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GearVR has probably been the most accessible VR experience available on the market at present, given there’s some hundreds of millions of Samsung devices in the hands of consumers that are VR ready puts Oculus and Samsung in very powerful position, I personally believe in using the highest quality experience for showing VR to newbies, so that leaves Oculus and HTC Vive. In my experience demoing a mobile level quality VR demo to VR first timers hasn’t delivered the same experiences as other VR headsets, I would love to hear if someone has seen the opposite experience so please comment on this post below.

Let’s start with Oculus, Oculus delivers a higher level immersion, from my experience demoing to consumers, reactions to the Oculus have been along the lines of higher quality graphics, better immersion, this is partly due to the technology which in turn allows developers to push the barriers of immersive experiences. Considering Oculus runs off a high-end PC and not a mobile device (same for the HTC Vive). I’m not saying GearVR apps can not create high levels of immersive experiences…Immersion is not defined by graphics quality and or technology but it can help.

Moving on to the HTC Vive, In my opinion and from my experience demoing to VR first timers and talking to professional developers, the HTC Vive delivers the best VR experience on the market. Partly due to the room-scale features it offers, this is a complete game changer in a VR experience, being able to physically move around the virtual room or space you are experiencing is extremely powerful and is a superb feature for us developers to experiment with with new game designs.

What’s really strange is the ability to move around a virtual room seems to confuse consumers at first, almost every VR first timer who tried the HTC Vive didn’t think about walking around the room, it seems to come across as an unnatural thing to do, which is true, think about it; Almost all core gaming experiences are static, since the beginning of video games you have never had the opportunity to physically move around a virtual space to effect the gameplay, the Wii was really the first global success in doing physical movement to effect gameplay (is there a term for that?) but you were limited as you had to face towards the TV.

Content on the HTC Vive has introduced various input designs that allow you to traverse virtual environments in various ways, there has been a few talks on this and is a constant topic at present, many developers experimenting with new ideas and also defining input standards within VR. Teleportation is one common technique which doesn’t really work for all experiences, the ability to teleport already defines the genre of your game, I mean..surely your game has some sci-fi based advancements right? As teleportation is not a natural experience for a human, the power of teleportation can break the immersive experience you are having within the content. In a general positive VR empowers you to experience what a teleportation might feel like, in reality it’s a win win situation for a consumer.

From a VR first timer perspective the teleportation technique completely freaks people out at first, I tend to show VR first timers Valve’s demo called “Aperture Robot Repair” which has a cool teleportation implementation, but it takes a few times to get used it at first, especially amusing is when the first time they use it and mess it up by teleporting up against a wall it strikes shock. Other implementations involve various techniques which I won’t go into in this post.

My brother tried a VR experience which placed the player up on a high beam, this totally freaked him out, having a fear of heights didn’t help but for my amusement seeing him try and balance himself on a flat surface (i.e. the bedroom floor) was rather good.

So, moving on from this, I would highly recommend showing VR first timers the HTC Vive, it really delivers the best experience VR can currently offer, the room-scale capabilities enhance the experience tenfold.

My order of content I demo to VR first timers:

theBlu:

theBlu.jpg

A cinematic experience which introduces VR first timers to room-scale VR with no interaction required, limiting the senses and allows us to adapt to the virtual environment and power of room-scale VR. Everyone I have shown this to has been blown away by this experience, especially when a big whale swims by. Generally people are super convinced at this point.

Aperture Robot Repair:

Adding an extra layer into the room-scale VR experience with the ability to be able to interact with objects in a virtual room, the human senses are going a bit more crazy with this experience, usually receive a lot of nervous laughter and “whoa!!” outbursts. Introduces teleportation input technique, which freaks people out at first. Generally; feedback has been very positive with this experience.

TiltBrush:

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An artistic VR experience, empowering the user to be creative with painting and drawing in VR, user can move around and interact via painting strokes or objects into a virtual space. Usually at this point a majority of users have adapted to a VR room-scale experience and everything is starting to feel more natural. As far as I know there’s no teleportation technique implemented.

After they are done with these three experiences, I offer a choice of content next, this means they can pick something that might interest them or pick something that might enhance a human emotion such as fear as in horror or fear of heights, so here is my list in no particular order:

  • Job Simulator
  • The Rose and I
  • Fantastic Contraption
  • Space Pirate Trainer
  • AudioShield
  • The Brookhaven Experiment
  • CloudLands: VR Minigolf
  • Skeet: VR Target Shooting
  • Selfie Tennis
  • The Lab

I  acknowledge content and peoples interests plays a big part in personal VR experiences and notice I mentioned “personal”, from what  I’ve seen everyone’s VR experience is unique and personal, people react to different experiences differently, it can effect them emotionally, such as being excited, nervous, funny, scared, peaceful etc…it would be great to hear what content you like to show to VR first timers and also the reactions from these experiences you’ve seen, please comment below.

So what have I learn’t exactly, lets summarise:

  • Demo the best technology on the market i.e. HTC Vive with room-scale VR
  • Ask the individual if they have any fears before letting them play
  • Always ensure the player doesn’t step on the headset cable
  • Start with the most basic / limited experience for example theBlu which is awesome
  • Begin introducing more complex VR experiences which involves interaction and movement
  • Then go wild if they feel comfortable continuing

Notice I haven’t covered nausea in this post, content on the HTC Vive and the technology shouldn’t cause this but may be experienced with specific people, I haven’t had one person experience nausea with the HTC Vive but I’m sure someone out there has.

Thanks all!

WebGL – The Future Ain’t What It Used To Be!

webgl

This post was valid as of 1st October 2015

Web deployment with Unity has took a hit in recent months due to the deprecation of NPAPI plugins in Chrome, which mean’t the WebPlayer plugin has been disabled. All major browser vendors are moving away from plugins.

Current solution is to look at the WebGL build target which came in a Preview state with Unity’s 5.0 release. We know there’s some challenges with supporting WebGL right now, but let me detail what the future should look like.

Why Preview?

WebGL now, is in Preview, it’s a way of Unity saying that some functionality and development needs to happen before they consider it a fully released product. Missing functionality from Unity’s side includes:

  • Substance realtime generation of procedural textures
  • Precomputed Realtime GI – believe that actually requires a port from Enlighten
  • MovieTextures – but actually you can get a nicer video playback using: Simple MovieTextures for Unity WebGL
  • WebCam – coming in 5.3
  • Microphone

Development needed from the browser vendors include:

  • WebAssembly
  • Data compression
  • Shared array buffers
  • WebGL 2.0

How will these help for the Future?!

WebAssembly which allows for taking ASM.js and turning it into byte code, in turn this makes things faster as byte code is faster to parse than JavaScript as well as being faster to execute. This will solve slow load times and slow downloads, also fixing up some memory usage issues.

Data Compression; Slightly self-explanatory, will allow for data to be kept in a compressed format in memory. Currently you need to handle this yourself, but not for much longer. This will greatly help with build sizes.

Shared Array Buffers is a feature that will allow for memory to be shared across web workers, using this Unity can map their current multi-threaded code to JavaScript, so WebGL can benefit from multi-threaded features such as PhysX. No more colliding on the main thread!

WebGL 2.0 – WebGL to become a graphic powerhouse, no really it can. Currently WebGL is using OpenGLES 2.0, remember those good old smartphones?! With WebGL 2.0 Unity WebGL gets the much needed bump up to OpenGLES 3.0, allowing for Unity to lift it’s restrictions on shaders, so we can have image effects (all the bloom you need), deferred rendering, skinning on the GPU. Unity’s 5.2 release included support for WebGL 2.0 as an experimental option, reason; because no major browser vendor has shipped support for it yet as of the date of this post, but you can try with a Firefox nightly build.

Some WebGL tips ‘n’ tricks:

Need to ship projects now with WebGL? Be sure to have taken note of what features in Unity that isn’t supported right now (see above) and also make use of these:

  • Crunched Texture Compression

You can use this feature as a texture format for JPEG like compression ratio and quality, however unlike JPEG it will directly decompress into DXT, so you have compressed textures on the GPU, no loss in GPU memory, happy days! This feature helps with memory reduction and keeping the data size down.

  • AssetBundles

A must use for any Unity project really, but for WebGL it will greatly help with a reduction in memory and build size. Let’s reduce everything!

  • Unity Profiler

If you’re not making use of Unity’s Profiler then you’re doing it wrong, as with any Unity project profile away, it’s fun and a great way of finding your bottlenecks. You should be optimising for WebGL as you do for any other platform in Unity, there’s a lot of resources online for optimising.

  • WebGL Memory Size

Within Unity -> Player Settings -> Publishing Settings you can specify how much memory (in MB) the content should allocate for it’s heap. If it’s too low you will get out of memory errors, but if it’s too high your content might fail to load in some browsers or on some machines, because the browser might not have enough available memory to allocate the requested heap size. Test and find the correct solution for your app. Optimising your app as much as possible will help with memory reduction therefore the need for a high heap size decreases..

  • Multiplayer Gaming

Use UNET in 5.1+ as this will work out of the box as it’s using the WebSocket API – you can also write JavaScript code to directly use WebSockets yourself.

Helpful resources:

Benchmarking can help you test different areas of Unity Engine to see how it performs on the WebGL platform. Unity developed a app so benchmarking can be easily executed: http://beta.unity3d.com/jonas/WebGLBenchmark/

Watch a Unite Europe 2015 talk from Unity’s lead WebGL developer Jonas Echterhoff: https://www.youtube.com/watch?v=RufJDxm6Lq8

Unity WebGL Forums for reporting issues and learning from other developers: http://forum.unity3d.com/forums/webgl.84/

Update:

I recently did a talk about WebGL & il2cpp – you can download the slides here: WebGL & il2cpp

Experimenting with HDR Skyboxes in Unity 5.

Unity 5 has implemented a HUGE update on the rendering / graphics side of the engine, introducing new lighting workflows with realtime GI, a Physically Correct Shader (Metallic & Specular workflows supported) among many other things..

I wanted to do an experiment today, where I test out HDR Skybox’s in Unity 5 to see how drastically the lighting and mood of a scene can change.

HDR:

High-Dynamic-Range is an imaging photography technique to produce a higher dynamic range of brightness. This is achieved by capturing different exposures of your chosen subject matter and combining them into one image.

In Unity we can use these HDR images to help blend 3D models into the environment, this can drastically add to the belief that the 3D model is actually in the environment.

Quick mention – I’m using HDR images from NoMotion HDR’s – 150 free HDR images, check EULA before using for commercial usages.

I’ll be showing how these 3 HDR images help create a completely different feel and look to the scene:

I have daytime, evening and night-time HDR’s, they should all create drastically different lighting conditions in Unity.

Time’s up chumps..let’s do this:

Unity 5’s new standard shader has built-in support for image based lighting (IBL), this really helps with the belief that the 3D model is in the environment I am setting with the HDR skybox.

Here’s the model with just Unity 5’s current default procedural skybox:

Default Skybox

With a bit of trickery (not really, just pushing a few buttons in Unity), let’s now see what happens when I add the daytime HDR Skybox:

Daytime Skybox

I haven’t messed with any lights at all, all I have is the default Directional Light in the scene with default settings. looks rather impressive after just adding a new HDR Skybox to the scene.

Let’s try the evening HDR Skybox now:

Evening Skybox

Awesome, I am really enjoying playing around with this, I love how quickly I can completely change the lighting conditions which in turn drastically changes the mood and atmosphere in the scene. I can’t wait to see how games are going to utilize these new features.

Okay, last one, the night-time HDR Skybox, I’m a little skeptical about this one, I’ve no idea how this will look and I imagine it’s not really desirable to use a night-time HDR image. Anyway, let’s see what it looks like:

Nighttime Skybox

Actually turned out rather well, the image doesn’t show the white spots on the model as much as in the editor, these white spots are produced by the specular smoothness on the Standard Shader, i.e the more smooth I make it the more white spot artifacts are produced, not sure why this is more present in the night-time scene, I’m sure there’s a setting I’ve missed or something..

Overall, I’m really impressed with this, especially how quickly I can change the mood and lighting of the scene and the visual output from Unity 5’s new rendering / graphics update.

Look forward to seeing what you all produce with Unity 5. 🙂

R&D with new Unity 5 Graphics..

My job is based on supporting Unity’s customer base in the EMEA region, to do a good job that means I need to learn all of the Unity things, features and new services, at least on a high level.

I tend to experiment a lot with Unity’s new features, today I wanted to share with you some of my R&D with Unity 5’s new Graphics overhall, this includes the new Physical Based Shader, Realtime Global Illumination and the new Scene Render Settings.

My experiments are usually aimed at producing a small scaled demo that can squeeze in as many features as possible, this enables me to demonstrate these features easily to customers while in the field.

Field

PBS (Physically Based Shader):

Unity’s new Physically Based Shader a.k.a one shader to rule them all a.k.a standard shader (actual name) allows us to create materials for a wide range of natural surfaces such as Metals, Dielectrics (non-metals): monolithic materials = rock, water, plastic ceramic, wood, glass etc..cloth and organic.

The new PBS also plays nice with IBL (Image Based Lighting), we can setup a skybox cubemap in the new Scene Render Settings to help with really blending our objects into the surrounding environments:

Scene Render Settings

One demo (not developed by me) shows a nice range of different surfaces used by the new standard shader in Unity 5:

We can see there’s at least six different surfaces represented here with the usage of just one shader – Ceramic, Cloth, Metal, Glass, Rock and Wood. The Scene Render Settings really help blending the Doll model into the surrounding area, helping us believe that the Doll is in the Forest environment.

The new shader includes many different texture slots, allowing you to add really nice detail to models. The shader includes a multi-variation of smaller shaders with versions for mobile and high-end.

Standard Shader PBS

Our built-in shader code is always available for download and currently with Unity 5 this will include the new standard shader as well – Could change but I doubt it.

Realtime Global Illumination:

The lighting for realtime is half pre-computed realtime lighting, allowing you to dynamically light your scene, dynamically changing: light sources, environment lighting and material properties such as diffuse reflective and surface emission.

Geometry needs to be marked lightmap static but you can relight geometry using Light Probes that are updated in realtime with the GI generated from the static geometry. In my little demo I’ve combined the usage of Realtime GI, PBS, Reflection Probes and Light Probes, the majority of the objects marked as static apart from a few props which demonstrate the usage of Light Probes for non-static objects:

Couple of shout outs, I’ve used the Medieval Assets Pack by Naresh and the Medieval Boat from Mr Necturus which are available on the Asset Store for most of the props. The wooden cottage model center piece is a free model from some site I can’t remember.

Here’s a Vine I recently sent out, little outdated comparing to the above screenshots, but demonstrates the realtime GI in editor with play mode on:

There’s more of this to learn as Unity 5 develops through the beta stage. Note: Screenshots from beta version of Unity 5 – May look different when released.

Also worth sharing is what Alex Lovett is doing with the Unity 5 beta and Realtime GI: http://forum.unity3d.com/threads/unity-realtime-reflections-and-gi-and-realism-exploration.266258/ – Now if only my Realtime GI R&D looked like that 😀

Improve your efficiency with MonoDevelop

Everyone has their own workflow and choice of Scripting IDE, but if you’re one of those using MonoDevelop with Unity this blog post should help with an increase in efficiency when working with it..

I’m using a Mac and so the workflow improvements will be based on using MonoDevelop on a Mac.

Syntax Highlighting is important for writing and reading code, MonoDevelop makes it easy to change this, simply click on MonoDevelop-Unity menu item and then click Preferences, the Preferences window will open, there’s a menu on the left hand side, under Text Editor -> Select Syntax Highlighting there will appear eight options for you to chose from. My preference is called Oblivion but pick and test one for yourself which suits you best. You can also enable semantic highlighting which helps with reading code. Use cmd + / –  to zoom in and out, so you can see the code you are writing.

Keyboard shortcuts:

Who doesn’t like a good keyboard shortcut, yes there’s many to remember from many different software packages we use, but I think it’s important to have a few for each package that are your most important to your workflow. So here’s a few I feel worth highlighting for an increased workflow:

Saving scripts:

  • cmd + S = Save Script – Unity picks up this save and recompiles to reflect the changes
  • cmd + shift + S = Save all scripts open, useful if you’re manipulating multiple scripts when coding public / public static functions etc

Scripting layout :

  • cmd +[ and cmd + ] = Indents code, allowing to quickly indent lines of code without having to use the tab key
  • cmd + / = Quickly comment out some code or  comment your comments
  • shift + arrow keys = Select lines of code or symbols real fast
  • cmd + shift + Y = Finds references to that code snippet and displays the info in a window below
  • alt / option + arrow keys = Move lines of code or the cursor through lines of code

Debugging:

  • cmd + return / enter = This starts debugging mode from the Run menu item, no need to go through menu items
  • cmd + \ = Toggles breakpoint, no need to go through the Run menu item
  • cmd + shift + I = Step Into, no need to go through the Run menu item
  • cmd + shift + O = Step Over
  • cmd + shift + U = Step Out

Other useful actions, “Attach to Process” and “Detach” when debugging Unity, these don’t have any default keyboard shortcuts, but if you enter MonoDevelop-Unity menu item and reopen Preferences window, you can add your own under “Key Bindings”. This also shows everything I just highlighted and more.

Hope this all helps and please share your workflow improvements!