Graphics Reference
In-Depth Information
Chapter 10
Chapter 9, “Texturing,” introduced you to the basics of creating and
applying textures in the fragment shader. In this chapter, we provide
more details on the fragment shader and describe some of its uses. In
particular, we focus on how to implement fixed-function techniques
using the fragment shader. The topics we cover in this chapter include
the following:
• Fixed function fragment shaders
• Programmable fragment shader overview
• Multitexturing
• Fog
• Alpha test
• User clip planes
In Figure 10-1, we have previously covered the vertex shader, primitive
assembly, and rasterization stages of the programmable pipeline. We have
talked about using textures in the fragment shader. Now, we focus on the
fragment shader portion of the pipeline and fill in the remaining details
on writing fragment shaders.
