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Unity Engine

DispatchIndirect(string, GraphicsBuffer, uint, Camera)

Dispatches this RayTracingShader.
Read time 1 minuteLast updated 11 days ago

Definition

public void DispatchIndirect(string rayGenFunctionName, GraphicsBuffer argsBuffer, uint argsOffset = 0, Camera camera = null)

Parameters

rayGenFunctionName

string
The name of the ray generation shader.

argsBuffer

GraphicsBuffer
Buffer containing dispatch dimensions.

argsOffset

uint
The byte offset into the buffer where the dispatch dimensions start.

camera

Camera
If you pass this parameter, Unity sets up built-in shader variables related to that camera.

Remarks

This method is similar to RayTracingShader.Dispatch but the GPU retrieves the dispatch dimensions from 
argsBuffer
. The typical use case is generating arbitrary amount of data using a ComputeShader and then dispatching that data, without requiring a readback to the CPU to retrieve the data size.
The buffer with arguments, 
argsBuffer
, must contain three integer numbers at given 
argsOffset
values representing the dispatch dimensions: width, height and depth.
Additional Resources: SystemInfo.supportsIndirectDispatchRays, GraphicsBuffer.CopyCount.