Version: 2022.3
Experimental: this API is experimental and might be changed or removed in the future.

RayTracingAccelerationStructure.UpdateInstanceTransform

切换到手册
public void UpdateInstanceTransform (Renderer renderer);
public void UpdateInstanceTransform (int handle, Matrix4x4 matrix);

参数

renderer The Renderer associated with a ray tracing instance.
matrix The new transformation matrix of the ray tracing instance in the case of a AABB ray tracing instance.
handle The handle associated with a AABB ray tracing instance.

描述

Updates the transformation of a ray tracing instance.

For a ray tracing instance associated with a Renderer component, the transformation is retrieved from the Transform component.

For a ray tracing instance associated with a axis-aligned bounding box (AABB) GraphicsBuffer, the handle that was returned by RayTracingAccelerationStructure.AddInstance function should be passed along with a new transformation matrix.

The transformation matrix can be accessed in shader code using WorldToObject() or ObjectToWorld() HLSL functions.

Note that building the acceleration structure on the GPU has to be triggered by calling RayTracingAccelerationStructure.Build or CommandBuffer.BuildRayTracingAccelerationStructure.