Color Blending Gradient

Implement a horizontal gradient between red and blue using the mix() function to help understand linear interpolation.

Overview

• Implement a horizontal gradient using UV as the factor.

Learning Objectives

• Gain a deeper understanding of how the mix(colorA, colorB, factor) function interpolates between two colors based on a factor.
• Learn to use the x-component of UV coordinates as the interpolation factor for the mix function.
• Master creating gradient effects that smoothly transition from one specified color to another.
• Be able to adjust the interpolation factor to change the way the gradient transitions.

Prerequisites

• basic-color-blend
• uv-coordinates

Key Concepts

• A horizontal gradient uses a 0-1 factor (usually UV) to blend colors.

float t = vUv.x;
vec3 color = mix(colorA, colorB, t);

• Keep the factor inside [0,1].

t = clamp(t, 0.0, 1.0);

How To Implement (Step-by-step)

• Set factor: t = vUv.x.
• Map t to a color (grayscale or mix).
• Output gl_FragColor with alpha=1.

Self-check

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

Common Mistakes

• Clamp t into [0,1] when needed.