Release 1.58 - June 17th, 2024 Behemoth | Compute-Driven Mega Particle System | Triangle Visibility Buffer 2.0

Release 1.58 - June 17th, 2024 Behemoth | Compute-Driven Mega Particle System | Triangle Visibility Buffer 2.0 |

Announce trailer for Behemoth

We helped Skydance Interactive to optimize Behemoth last year. Click on the image below to see the announce trailer:

Compute-Based Mega Particle System

This unit test was based on some of our research into software rasterization and GPU-driven rendering. A particle system completely running in very few compute shaders with one large buffer holding most of the data. Like with all things GPU-Driven, the trick is to execute one compute shader once on one buffer to reduce read / write memory bandwidth. Although this is not new wisdom, you will be surprised how many particle systems get this still wrong ... having compute shaders for each stage of the particle life time or even worse doing most of the particle work on the CPU.
This particle system was demoed last year in a few talks in September on a Samsung S22. Here are the slides:

http://www.conffx.com/WolfgangEngelParticleSystem.pptx

It is meant to be used to implement next-gen Mega Particle systems in which we simulate always 100000th or millions of particles at once instead of the few dozen ones contemporary systems simulate.

Android Samsung S22 1170x540 resolution

This screenshot shows 4 million firefly-like particles, with 10000 lights attached to them and a shadow for the directional light. Those numbers were thought to be not possible on mobile phones before.

Android Samsung S23 1170x540 resolution

Same setting as above but this time also with 8 Shadows from Point Lights additionally.

Android Samsung S24 1170x540 resolution

Same setting as above but this time also with 8 Shadows from Point Lights additionally.

PS5 running at 4K

Windows with AMD RX 6400 at 1080p

Triangle Visibility Buffer 2.0

we have the new compute based TVB 2.0 approach now running on all platforms (on Android only S22). You can download slides from the I3D talk from

http://www.conffx.com/I3D-VisibilityBuffer2.pptx