Once the rasterizer has computed the output pixel value for a given pixel, the output value passes through a series of final operations. These operations include alpha testing, stencil testing, and depth testing. All of these operation can result in the output pixel being discarded, in which case processing continues on the next pixel in the primitive. These final operations also include alpha blending, which can change how the output pixel is combined with the corresponding pixel value already in the render target.

The following topics provide additional information about per-pixel operations.

• Depth Buffering
  
  
• Alpha Test
  
  
• Stencil Operations
  
  
• Alpha Blending
  
  
• Dithering
  
  
• Writing Pixels
  
  

See Also