Linear Gradient

This shader generates a linear gradient between 2 colors. You can change the position of the colors, the size of the gradient effect, the rotation angle and, of course, the colors themselves.

To use the shader, simply create a ColorRect node, create a shader material for it and paste the shader.

Shader code
shader_type canvas_item;

uniform vec4 first_color : hint_color = vec4(1.0);
uniform vec4 second_color : hint_color = vec4(0.0, 0.0, 0.0, 1.0);
uniform float position : hint_range(-0.5, 0.5) = 0.0;
uniform float size : hint_range(0.5, 2) = 0.5;
uniform float angle : hint_range(0.0, 360.0) = 0.0;

void fragment() {
	float pivot = position + 0.5;
	vec2 uv = UV - pivot;
	float rotated = uv.x * cos(radians(angle)) - uv.y * sin(radians(angle)); 
	float pos = smoothstep((1.0 - size) + position, size + 0.0001 + position, rotated + pivot);
	COLOR = mix(first_color, second_color, pos); 
}
Tags
gradient
The shader code and all code snippets in this post are under CC0 license and can be used freely without the author's permission. Images and videos, and assets depicted in those, do not fall under this license. For more info, see our License terms.

Related shaders

Gradient Color Correction for ViewportTextures

Smooth Radial Gradient

Animated and Gradient Outlines

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