What is a Fragment Shader?

Oscar de la Hera Gomez
A flower that represents spatial computing with the text "Fragment Shader" beneath it.

In Computer Graphics, the term "fragment shader" refers to the four-dimensional (4D) program that defines the appearance of an object, model or geometry.

A fragment shader is the part of a shader that defines the way that vertices are colored and create the final visual output of a geometry, model or object on a screen.

A screenshot of Chrome showing the Spot Light in action.

An example of a spot light shader.

Fragment shader programs are capable of taking in variables defined by software (i.e. uniforms) as well as taking in vertex specific data passed down from the vertex shader (i.e. varying or in/out).

Looking for tutorials on how to implement shaders?

For examples on how to implement shaders in WebGL and Metal (Apple), consult the guides below.

Looking to learn more about how computer graphics (CG) are rendered?

Consult our article below to learn more about how computer graphics are rendered.

Looking to learn more about Technology, Augmented Reality, Virtual Reality, Mixed Reality or Spatial Computing?

Search our blog to find educational content on technology, A/R, V/R, M/R and spatial computing.

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