Version: 2023.2
LanguageEnglish
  • C#

RayTracingAccelerationStructure.UpdateInstanceTransform

Suggest a change

Success!

Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.

Close

Submission failed

For some reason your suggested change could not be submitted. Please <a>try again</a> in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.

Close

Cancel

Declaration

public void UpdateInstanceTransform(Renderer renderer);

Parameters

renderer The Renderer associated with a ray tracing instance.

Description

Updates the transformation of a ray tracing instance.

For a ray tracing instance associated with a Renderer component, Unity retrieves the transformation from the Transform component.


Declaration

public void UpdateInstanceTransform(int handle, Matrix4x4 matrix);

Parameters

handle The handle associated with a AABB or Mesh ray tracing instance.
matrix The new transformation matrix of the ray tracing instance.

Description

Updates the transformation of a ray tracing instance.

Pass along a new transformation matrix and the handle RayTracingAccelerationStructure.AddInstance returns in order to transform a ray tracing instance associated with a axis-aligned bounding box (AABB) GraphicsBuffer or a Mesh.

Access the transformation matrix in shader code using WorldToObject() or ObjectToWorld() HLSL functions.

To trigger an acceleration structure build on the GPU, call RayTracingAccelerationStructure.Build or CommandBuffer.BuildRayTracingAccelerationStructure.

Additional resources: RayTracingAccelerationStructure.AddInstance, RayTracingAccelerationStructure.RemoveInstance.