Compute Shader Support

[onehundredfeet]

Hi,

I need compute shader support to continue my project. I was wondering if there was already progress made here or if I should just figure it out and post a PR.

I'd like to keep it as much in line with Heaps philosophy as possible.

[ncannasse]

Hi,
@clementlandrin started working a bit on DX12 support, but we haven't push anything yet.
I'm working on WebGPU driver so we can have them in JS as well.

[onehundredfeet]

Is there a preferred branch that shows how you'd like the API to work? I don't mind implementing the backend, but I figured you might have a vision for how you'd like the heaps side of it to work.

[ncannasse]

I guess the idea would be to add a function compute(RuntimeShader,Buffers) to the driver. And be able to create UAVs of buffers and textures. On the shader side (HxSL) we could define the compute() function instead of vertex()+fragment() Best, Nicolas Le mer. 3 mai 2023 à 23:36, Ryan Cleven ***@***.***> a écrit :

…

Is there a preferred branch that shows how you'd like the API to work? I don't mind implementing the backend, but I figured you might have a vision for how you'd like the heaps side of it to work. — Reply to this email directly, view it on GitHub <#1145 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAHZXQBHXQDVQU7Q3MYTSBDXELFUBANCNFSM6AAAAAAXTW6BHE> . You are receiving this because you commented.Message ID: ***@***.***>

[dovker]

Any updates on this? I want to create a game as a graphics demo (I know Heaps may not be great for this, but I like it too much) And I am really keen on this feature being implemented...

[ncannasse]

We have merged compute shader basic support for DX12 only atm. It requires some manual shader management but we're working on making it easier.

[crystalthoughts]

Hi, can you point me towards the docs for playing around with compute shaders?

[clementlandrin]

Hello, there is no documentation at the moment but you can take a look at several examples:

• https://github.com/HeapsIO/techTests/tree/main/compute using compute shaders to write into a read/write texture and a read/write buffer.
• the spawn and simulation compute shaders in hide/hrt/prefab/fx/gpuemitter that uses compute shaders to update gpu particle. They extends BaseSimulation.hx and BaseSpawn.hx and can be added to a shader list to be dispatched.
• lastly heaps/h3d/scene/MeshBatch.hx that can use compute shaders to update a buffer used for instancing.