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Unity Engine

motionVectorMode

Motion vector mode.
Read time 1 minuteLast updated 4 days ago

Definition

public MotionVectorGenerationMode motionVectorMode

Remarks

Unity configures the following built-in shader uniforms to calculate motion vectors in HLSL code: 
unity_MotionVectorsParams
, 
unity_MatrixPreviousM
and 
unity_MatrixPreviousMI
.
For Mesh ray tracing instances, 
unity_MotionVectorsParams
is a vector uniform. Its component values are as follows:
unity_MatrixPreviousM
and 
unity_MatrixPreviousMI
are the instance matrix and its inverse respectively used in the previous frame. Note that Unity only updates these matrices only when there's a Camera in the Scene that's using the DepthTextureMode.MotionVectors flag in Camera.depthTextureMode.
To access the ray tracing instance matrix in closest hit, any hit, and intersection shaders, use the 
ObjectToWorld
or 
WorldToObject
HLSL functions.
Additional Resources: MotionVectorGenerationMode.