CopyCount
Copy the counter value of a GraphicsBuffer into another buffer.
Read time 3 minutesLast updated 6 days ago
Definition
- Type: Method
- Namespace: UnityEngine
- Assembly: UnityEngine.CoreModule
CopyCount(ComputeBuffer, ComputeBuffer, int)
Copy the counter value of a GraphicsBuffer into another buffer.
public static void CopyCount(ComputeBuffer src, ComputeBuffer dst, int dstOffsetBytes)
Parameters
The source GraphicsBuffer.
The destination GraphicsBuffer.
The destination buffer offset in bytes.
Remarks
Append/consume buffers (see GraphicsBuffer.Target.Append and counter buffers GraphicsBuffer.Target.Counter) keep track of the number of elements in them with a special counter variable. CopyCount takes such a buffer as src, and copies its counter value into dst buffer at given byte offset.
This is most commonly used in conjunction with Graphics.RenderPrimitivesIndirect, to render an arbitrary number of primitives without reading their count back to the CPU.
The src buffer must have been created with a usage target of GraphicsBuffer.Target.Append or GraphicsBuffer.Target.Counter.
On DirectX 11 and 12, the dst buffer must have been created with a usage target of GraphicsBuffer.Target.Raw or GraphicsBuffer.Target.IndirectArguments. For other graphics APIs, there is no such restriction.
Additional Resources: GraphicsBuffer.SetCounterValue.
CopyCount(GraphicsBuffer, ComputeBuffer, int)
Copy the counter value of a GraphicsBuffer into another buffer.
public static void CopyCount(GraphicsBuffer src, ComputeBuffer dst, int dstOffsetBytes)
Parameters
The source GraphicsBuffer.
The destination GraphicsBuffer.
The destination buffer offset in bytes.
Remarks
Append/consume buffers (see GraphicsBuffer.Target.Append and counter buffers GraphicsBuffer.Target.Counter) keep track of the number of elements in them with a special counter variable. CopyCount takes such a buffer as src, and copies its counter value into dst buffer at given byte offset.
This is most commonly used in conjunction with Graphics.RenderPrimitivesIndirect, to render an arbitrary number of primitives without reading their count back to the CPU.
The src buffer must have been created with a usage target of GraphicsBuffer.Target.Append or GraphicsBuffer.Target.Counter.
On DirectX 11 and 12, the dst buffer must have been created with a usage target of GraphicsBuffer.Target.Raw or GraphicsBuffer.Target.IndirectArguments. For other graphics APIs, there is no such restriction.
Additional Resources: GraphicsBuffer.SetCounterValue.
CopyCount(ComputeBuffer, GraphicsBuffer, int)
Copy the counter value of a GraphicsBuffer into another buffer.
public static void CopyCount(ComputeBuffer src, GraphicsBuffer dst, int dstOffsetBytes)
Parameters
The source GraphicsBuffer.
The destination GraphicsBuffer.
The destination buffer offset in bytes.
Remarks
Append/consume buffers (see GraphicsBuffer.Target.Append and counter buffers GraphicsBuffer.Target.Counter) keep track of the number of elements in them with a special counter variable. CopyCount takes such a buffer as src, and copies its counter value into dst buffer at given byte offset.
This is most commonly used in conjunction with Graphics.RenderPrimitivesIndirect, to render an arbitrary number of primitives without reading their count back to the CPU.
The src buffer must have been created with a usage target of GraphicsBuffer.Target.Append or GraphicsBuffer.Target.Counter.
On DirectX 11 and 12, the dst buffer must have been created with a usage target of GraphicsBuffer.Target.Raw or GraphicsBuffer.Target.IndirectArguments. For other graphics APIs, there is no such restriction.
Additional Resources: GraphicsBuffer.SetCounterValue.
CopyCount(GraphicsBuffer, GraphicsBuffer, int)
Copy the counter value of a GraphicsBuffer into another buffer.
public static void CopyCount(GraphicsBuffer src, GraphicsBuffer dst, int dstOffsetBytes)
Parameters
The source GraphicsBuffer.
The destination GraphicsBuffer.
The destination buffer offset in bytes.
Remarks
Append/consume buffers (see GraphicsBuffer.Target.Append and counter buffers GraphicsBuffer.Target.Counter) keep track of the number of elements in them with a special counter variable. CopyCount takes such a buffer as src, and copies its counter value into dst buffer at given byte offset.
This is most commonly used in conjunction with Graphics.RenderPrimitivesIndirect, to render an arbitrary number of primitives without reading their count back to the CPU.
The src buffer must have been created with a usage target of GraphicsBuffer.Target.Append or GraphicsBuffer.Target.Counter.
On DirectX 11 and 12, the dst buffer must have been created with a usage target of GraphicsBuffer.Target.Raw or GraphicsBuffer.Target.IndirectArguments. For other graphics APIs, there is no such restriction.
Additional Resources: GraphicsBuffer.SetCounterValue.