paullj / unity-ecs-instanced-sprite-renderer Goto Github PK

Hello, I am currently working on a 2D sprite-based game and recently went through the process of updating my implementation of a sprite renderer with frustum culling.

If you are interested in adding frustum culling to your sample, you can use my code as an example. It is based on the Unity.Rendering.MeshInstanceRenderer available in Unity Entities v0.0.12, but modified where necessary for sprite rendering.

The code is available as a public gist (as the source repository is currently private):

• https://gist.github.com/ssell/941d5f5c7a903033fa325a89c158d3f8

There are optimizations I plan on making to it (such as passing tilemap rect values as material properties and not separate batches), but hopefully it can serve as a reference you.

That way it would also work in a build.

There is ~3.1kb GC allocated per frame

These are from the lookups on meshCache and materialCache, which use SpriteInstanceRenderer as a key

The default ObjectEqualityComparer used in the Dictionary class will generate garbage when calling Equals() and GetHashCode()

This can be observed using the Deep Profiling option in the Unity profiler

This can be fixed by making SpriteInstanceRenderer implement the interface IEquatable in a way that does not generate garbage

It could alternatively be fixed by creating an IEqualityComparer class, and supplying it on construction to these Dictionary instances.

If not done, the shader isn't embedded in the build (unless it was used somewhere else in the project), throwing an error.

I haven't figured out why yet.

Be wary of #2 and #3 .

Hi, nice work there, any chance for an update for the latest version of unity (2019.2.12-f1)?

=)