UV Visualizer

Directly convert UV coordinates to color values to facilitate understanding of vUv color mapping.

Overview

• Follow the steps to complete the exercise.

Learning Objectives

• Learn how to map the x and y components of UV coordinates to the R and G channels of color, respectively.
• Understand how this visualization method can help debug and understand the distribution of UV coordinates.
• Be able to create a simple UV visualizer shader.
• Recognize the importance of UV coordinates in texture sampling and procedural pattern generation.

Prerequisites

• uv-coordinates

Key Concepts

• vUv is normalized UV in [0,1].

vec2 uv = vUv;

How To Implement (Step-by-step)

• Start from vUv.

Self-check

• Does it compile without errors?
• Does the output match the goal?
• Are key values kept in [0,1]?

Common Mistakes

• If output is black, check your mask/factor isn’t always 0.