youtube: ______ download .apk: __________
DrawMeshInstancedIndirect ON
To demonstrate DrawMeshInstancedIndirect API on mobile devices.
- can draw 10,000 instance on almost any mobile GPU(e.g. adreno506) within 4ms, performance mainly affected by grass's vertex shader
- can draw 100,000 instances on 2018/2019 flagship mobile GPU (adreno630) within 4ms, performance mainly affected by grass's vertex shader
your android device must support Opengles3.2 / Vulkan
2019.4.3f1
This is a simplified example project, just to demonstrate DrawMeshInstancedIndirect API on mobile.
Does not contain any compute GPU culling and Acceleration Algorithms. It is as simple as possible, just 1 DrawMeshInstancedIndirect call.
Lighting and animation is not the main focus of this project, but >50% of the time was spent on writing grass shader lighting & animation, you can have a look at InstancedIndirectGrass.shader if you are interested.
This project also contains a RendererFeature(GrassBendingRTPrePass.cs) to render an offscreen 64x64 RT(R8) recording top down view grass bending area using trail renderer, it is a very simple method but the result is good enough for this demo.