Unity just released a new sample “Spaceship” that demonstrates the new Visual Effect Graph showcasing it’s ability to create elaborate UI or in game special effects.
Details of the demonstration from the Unity blog:
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.
You can learn more about project as well as a complete capture of the Spaceship demo in the video below.