Last year, at Unite LA, we released a video showcasing the brand-new Visual Effect Graph in action through a First-Person Game walkthrough, using Unity 2018.3. This demo was rendered using the High-Definition Render Pipeline and showcases High-Definition assets, lighting, and effects.
This year, Visual Effect Graph will come out of preview with Unity 2019.3. In order to explore how this project was made, we upgraded the effects to take full advantage of the latest features and released and documented the Spaceship demo project. You can already download, open and learn from it, starting today, using Unity 2019.2.
Watch the video of the Spaceship demo.
All effects from the Spaceship Demo are made using Visual Effect Graph, from simple environmental VFX to more complex Augmented Reality and Holographic UI, HUD, to a gorgeous Reactor Core effect. Here are some eye-candy screenshots of the environments and effects you will encounter in the demo.
The spaceship demo features many effects during its walkthrough. All these effects have been authored and optimized in-game production conditions with performance in mind, targeting 33.3 ms (30 fps) on Playstation 4 (base) at 1080p. All the effects are taking advantage of the many optimization settings we implemented in Visual Effect Graph and High Definition Render Pipeline.
Half-Resolution Translucent Rendering renders selected transparent particles at a lower resolution, increasing rendering performance by 4 (at the expense of little blurriness in some rare cases). We used it mostly for big, lit particles that are present in the foreground as their texel/pixel ratio is rather low, the loss in resolution is not noticeable at all.
Octagon Particles is an optimization of quad particles and enable the corners of the particles to be cropped. where the pixels are often found transparent (invisible cost). Particle corners are often transparent, but the overlapping of these transparent areas result in unnecessary calculations. Cropping out these sections can optimize the scene up to 25% in situations where there is lots of overdraw. There is also the benefit of reducing the resolution of the translucent sections when they can't be cropped away.
Simplified Lighting model: Simple Lit for HD Render Pipeline enables disabling properties of the BRDF - Diffuse Lighting, Specular Lighting, Shadow and Cookie Reception, and Ambient Lighting. By selecting only the features you want to see, you can decrease the lighting computation cost to close to none. For instance, particles can be lit using only Light Probes by selecting a Simple Lit Translucent Model, then disabling everything except ambient lighting. This optimization was chosen for many environment effects that did not require a lot of high-frequency lighting.
In order to access this project, you will first need the brand-new Unity 2019.2 Editor. You can easily install it in the Unity Hub App by clicking the Installs Tab, clicking the Add button, then selecting Unity 2019.2.0f1 (or newer versions).
Then, you will need to go to the Spaceship Demo page on Github to get the project files. Once on this page, you can clone the project by clicking the “Clone or Download” button, then clicking “Open in Desktop” if you have the Github Desktop app installed. Or, you can use the address above to clone it in another git client.
Do not download the other SourceCode zip or tar.gz files. The project uses git LFS and these archives will not include binary data. If you download a project from this page, please make sure that you have an updated editor.
Once downloaded, you need to unzip the project files into the folder of your choice. Then, you are good to go!
We also built playable binaries for the demo if you want to run it on your PC. You can download it using this link. For updated binaries, you can also go to the Releases Page of the Github Project in order to find newer, standalone builds.
The demo should run around 30fps at 1080p on a mid-range gaming-grade PC with the following specifications:
Using Unity Hub, you can add the project in the projects Tab using the Add button and navigate to the root of the project folder. If the Unity version is not selected, you can select it using the drop-down menu. Then you will be able to load the project by clicking the project name.
Loading the project takes between 10 to 20 minutes depending on your computer’s capabilities. Once it’s done, you should end up with the editor open and displaying a Discover Spaceship Demo window.
The Discover window is made to guide you through the project and help you find the key elements that compose the walkthrough of this 5-minute long sequence. It focuses mainly on visual effects and scripted sequences.
Note: You can close the window at any time and reopen it using the Help/Discover Spaceship Demo menu.
When the project opens, the window prompts you to open either the Spaceship Demo Level or the Main Menu Scene. By clicking the corresponding Open Buttons, the editor will automatically load the Scenes in the editor. Then, the discover window will go into Discovery Mode, displaying the many points of interest that you can find in this level.
You can select items in the list located on the left of the window. All of them will move the Scene View to the relevant point of view and will display useful information on the right side in order to select Game Objects and open Assets. Using this window, you will be able to find out which game objects do what, preview timelines, and open the visual effect graphs that compose every sequence.
Visual Effect Graph will come out of preview in 2019.3 and the Spaceship demo project will be updated after the final release to run with Unity 2019.3. Stay tuned for more project updates this fall by starring or watching the repository on GitHub.
In the meantime, feel free to join us on the forums and give us feedback about your experience with the Spaceship demo!
Join us at Unite Copenhagen to learn more about VFX Graph
The next place you can meet us is at Unite Copenhagen, which takes place September 23 -26. It’s a one-of-a-kind opportunity for you to engage with thousands of talented creators and top developers from around the world!