Graphics Reference
In-Depth Information
Chapter 11
Fragment Operations
This chapter discusses the operations that can be applied either to the
entire framebuffer or to individual fragments after the execution of the
fragment shader in the OpenGL ES 3.0 fragment pipeline. As you'll recall,
the output of the fragment shader is the fragment's colors and depth
value. The following operations occur after fragment shader execution
and can affect the visibility and final color of a pixel:
• Scissor box testing
• Stencil buffer testing
• Depth buffer testing
• Multisampling
• Blending
• Dithering
The tests and operations that a fragment goes through on its way to the
framebuffer are shown in Figure 11-1.
Fragment
Shader
Stencil
Test
Scissor
Box
Depth
Test
Blending
Dithering
Figure 11-1
The Post-Shader Fragment Pipeline
 
 
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