How do I pass a Float uniform to iOS Metal shader using Swift? -

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I want to pass a float to my metal shader. I do not know how it might be.

This is my shader: 

  peak float 4 Modl_vrteks (unsigned Int IID [[instance_id]] continuous float angle) {float number = float (IID) / 64.0; Return float 4 (number * sin (angle), number * cos (angle), 0.0, 1.0); }   
 Now I want to pass it in the shader do:  
  to render render to PassDescriptor = MTLRenderPassDescriptor () Encoder = commandBuffer.renderCommandEncoderWithDescriptor (renderPassDescriptor) // .. angle: float = 0.5 render encoder.Set uForm1 (angle) // What do I do here?   
 How can I pass a float value?   
 
 
 I have not looked set to pass uniform for its top peak before forma *, it Use:  
  setVertexBuffer (buffer: Mtielbfr? Offset: Aitiandaks index: IT)   
 Where buffer in your example, an array with a float Ho. Set the word format for the use of a piece shader. Fragmentbuffer.

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